Table of Contents DETAIL DESCRIPTION OF THE PROJECT DESIGN .................................................................................... 1

ELECTRODES ........................................................................................................................... 1 ANALOG-DIGITAL CONDITIONING ................................................................................................. 1 DIGITAL PROCESSING ................................................................................................................. 2 GRAPHIC USER INTERFACE ........................................................................................................... 3

HARDWARE DESIGN ............................................................................................................................. 4

TESTING AND RESULTS ......................................................................................................................... 5 ELECTRODES ........................................................................................................................... 5 ANALOG-DIGITAL COUPLING ....................................................................................................... 5 DIGITAL PROCESSING ................................................................................................................. 6 INTERFACES ............................................................................................................................. 7

Main Screen .......................................................................................................................................... 8

CONCLUSIONS AND FUTURE WORK .................................................................................................. 10

ACKNOWLEDGMENTS AND REFERENCE ............................................................................................ 10

APPENDIX ............................................................................................................................................. 12 SCHEMATICS ........................................................................................................................... 12 CRITICAL IC BILL OF MATERIALS ................................................................................................... 12 SOFTWARE CODE ..................................................................................................................... 13

List of Figures Figure 1. General description: The project has three main SECTIONS: electrodes and analog conditioning, digital processing and visualization 1 Figure 2 ADS1292R Functional diagram _________________________________________________________________ 2 Figure 3 ADS1292R Functional diagram _________________________________________________________________ 3 Figure 4 Signal / Interference ratio Vs electrodes distance _______________________________________________________ 5 Figure 5 PCB Design ______________________________________________________________________________ 6 Figure 6 ADS1292 Test signal with gain = 12 _____________________________________________________________ 6 Figure 7 ECG Signal acquiered by ADS1292 with Gain = 6 _____________________________________________________ 7 Figure 8 Graphic for Buffered data _____________________________________________________________________ 7

1

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

IXCHEL. MATERNAL-FETAL ECG MONITOR Detail Description Of the project design The design of this device was divided in three main blocks: Electrodes and analogic-digital conditioning, digital processing and graphic user interface. Figure 1. In the following pages we are explaining each one of the blocks in a more detailed way.

FIGURE 1. GENERAL DESCRIPTION: THE PROJECT HAS THREE MAIN SECTIONS: ELECTRODES AND ANALOG CONDITIONING, DIGITAL PROCESSING AND VISUALIZATION

E l e c t r o d e s One of the things we would like emphasis in is the fact that we pretend in a near future, to use IXCHEL on a clinical environment where a practical and fast screening is needed. Therefore, we choose dry electrodes to put them in immediate contact with the skin and to avoid using electrolyte gels. We assume that dry electrodes can transduce the electrical activity of the heart with acceptable quality, even at the abdominal surface of the pregnant women.

The electrodes we are using have a chemical composition of silver-nickel. The electrodes have a rectangular shaped and a length of 2cm x 3cm. These kind of electrodes have been used in others protocols in the Laboratory of Human Physiology at the Universidad Autonoma Metropolitana (UAM) and the results have been satisfactory in the acquisition of pregnant women abdominal ECG signals, from 20 weeks of gestation to delivery.

For electrodes testing purpose, we used an ECG100C and the data acquisition system MP150 (BioPac System). The reason for using the BioPac system is due to the fact this is a ratified system in the academic environment and we need to obtain a reliable and trustful signal. So, we were able to compare the abdominal ECG signals acquired with the biopac system with those recorded with our own device.

A n a l o g - D i g i t a l C o n d i t i o n i n g For acquiring a physiological signal it is necessary to use specific electronic elements in order to assure a reliable acquisition, these could be amplifiers with high input impedance, high values for gain and high Common Mode

2

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

Rejection Relation, as the physiological signals of interest at the abdominal maternal surface have voltage values in the range of microvolts. On the other hand, using high resolution Analogic to Digital converters minimizes information waste.

The Analog Front End ADS1292 (Figure 2) for Biopotential Measurements includes all fundamental features that we need to acquire and convert the abdominal ECG analogic signal, it integrates a multichannel, simultaneous sampling, 24-bit, deltasigma () analog-to-digital converter (ADC) with a built-in programmable gain amplifier (PGA). In addition, it is ideal to low power medical devices, and therefore using the ADS1292 becomes convenient in portable devices.

FIGURE 2 ADS1292R FUNCTIONAL DIAGRAM

The analog functional configuration of the ADS1292R was based in the configuration suggested by the manufacturer using a Bipolar Supply as shows in Figure 3. Additionally a passive conditioning for the electrodes was included, in order to reduce offset voltages and noise due the electrode-patient interface. All tests were performed in a breadboard using an SMT to Dip adapter from Schmartboard, this allowed us an easier manipulation of the ADS1292. Also, the internal configuration of the front end was done through SPI communication with the Tiva C Series TM4C LaunchPad Evaluation Kit.

Moreover, the acquisition tests were performed using the Patient Simulator 214B from Nevada Inc. This simulator generates ECG waves in multiple frequency and amplitude values, and also it is possible to generate a maternal-fetal ECG waveform. Once we have got the functional configuration, the final step of the prototype design was to generate both the schematic layout and the PCB board building files.

D i g i t a l P r o c e s s i n g To configure the ADS functions it was necessary to configure the SPI communication, therefore we use the TivaWare library to save time. The configuration was set through 3 channels (SCLK, DOUT and DIN) for SPI communication. CS, START and PWnD/RESET were programmed in specifics I/O ports.

We configure the microcontroller clock to run at 120MHz, using the main oscillator and the PLL to ensure the speed from the clock. After Clock initialization, we configured the specific registers for SSIO.

For the SSIO configuration we selected: phase 1 and polarity 0, TM4C129 as master mode, speed at 1MHz and 8 bits packages. The clock was set to 120MHz to make a fast SPI communication with the ADS1292R and 8 bits because it is the package size for the front end. Also in this module we configure the interruptions activated by DRDY pin.

Control

CLKG

PIOANDCO

N TR OL

Oscillator

SPI

TestSignalsandMonitors

SPI

RLD

Reference

REF

ADC1

ADC2

A1

A2

MUX

INPU

TS

!

!

ToChannel

RESP

RESPDEMOD

(ADS1292R)

RESPMOD

(ADS1292R)

ADS1291ADS1292ADS1292R

www.ti.com SBAS502B DECEMBER 2011REVISED SEPTEMBER 2012

Low-Power, 2-Channel, 24-Bit Analog Front-End for Biopotential MeasurementsCheck for Samples: ADS1291, ADS1292 , ADS1292R

The ADS1291, ADS1292, and ADS1292R1FEATURESincorporate all features commonly required in

23 Two Low-Noise PGAs and portable, low-power medical electrocardiogramTwo High-Resolution ADCs (ECG), sports, and fitness applications.(ADS1292 and ADS1292R)With high levels of integration and exceptional Low Power: 335 W/channel performance, the ADS1291, ADS1292, and

Input-Referred Noise: 8 VPP ADS1292R enable the creation of scalable medical(150-Hz BW, G = 6) instrumentation systems at significantly reduced size,

power, and overall cost. Input Bias Current: 200 pA Data Rate: 125 SPS to 8 kSPS The ADS1291, ADS1292, and ADS1292R have a

flexible input multiplexer per channel that can be CMRR: 105 dB independently connected to the internally-generated Programmable Gain: 1, 2, 3, 4, 6, 8, or 12 signals for test, temperature, and lead-off detection. Supplies: Unipolar or Bipolar Additionally, any configuration of input channels can

be selected for derivation of the right leg drive (RLD) Analog: 2.7 V to 5.25 Voutput signal. The ADS1291, ADS1292, and Digital: 1.7 V to 3.6 V ADS1292R operate at data rates up to 8 kSPS. Lead-

Built-In Right Leg Drive Amplifier, Lead-Off off detection can be implemented internal to theDetection, Test Signals device, using the device internal excitation current

sink or source. The ADS1292R version includes a Integrated Respiration Impedancefully integrated respiration impedance measurementMeasurement (ADS1292R) function. Built-In Oscillator and ReferenceThe devices are packaged in a 5-mm 5-mm, 32-pin Flexible Power-Down, Standby Mode thin quad flat pack (TQFP) and a 4-mm x 4-mm, 32- SPI-Compatible Serial Interface pin quad flat pack with no leads (QFN). Operatingtemperature is specified from 40C to +85C. Operating Temperature Range: 40C to +85C

APPLICATIONS Medical Instrumentation (ECG) including:

Patient monitoring: Holter, event, stress,and vital signs including ECG, AED, andtelemedicine

Sports and fitness(heart rate, respiration, and ECG)

High-Precision, Simultaneous, MultichannelSignal Acquisition

DESCRIPTIONThe ADS1291, ADS1292, and ADS1292R aremultichannel, simultaneous sampling, 24-bit, delta-sigma () analog-to-digital converters (ADCs) with abuilt-in programmable gain amplifier (PGA), internalreference, and an onboard oscillator.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications ofTexas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2SPI is a trademark of Motorola.3All other trademarks are the property of their respective owners.PRODUCTION DATA information is current as of publication date. Copyright 20112012, Texas Instruments IncorporatedProducts conform to specifications per the terms of the TexasInstruments standard warranty. Production processing does notnecessarily include testing of all parameters.

3

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

FIGURE 3 ADS1292R FUNCTIONAL DIAGRAM

We create two subroutines, the first one sends opcodes to configure ADS and the other sends and receive data trough SPI. These routines are described more detailed below and the code is located in the appendix.

The interruption routine is activated when DRDY sends a 0 to pin PH0. The routine contains the sequence to get data from the ADS1292R. The Status register doesnt matter, the second sequence of 3 bytes corresponds to Channel 1s information, which is stored in 3 variables. The last sequence is for the Channel 2s information, as we are using only one channel we ignore this data. We also add a led indicator to watch the configuration process.

After receiving the information of channel 1, we joined the three packages into one variable and then we stored it at a circular buffer.

We faced some problems related to ADS1292R configuration. The ADS1292R needs to reset the SPI communication in order to receive data and we didnt notice this initially. We had some problems with the received data and the correct order to join it.

In the code section we show the described functions and the time diagrams for SPI communication are showed in the results.

G r a p h i c U s e r I n t e r f a c e

4

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

We needed a graphic user interface GUI user friendly, so we decided to use a Tiva development card (TM4C129X), which have a KenTec touch screen TFT LCD Display of 320x240 pixels.

The software we choose to create the code is a Code Composer Studio version 5.5.0, the reason we use this software is due to the fact it is an integrated development environment (IDE) that supports TI's Microcontroller and Embedded Processors portfolio. It includes an optimizing C/C++ compiler, source code editor, project build environment, debugger, profiler, and many other features.

The main program is configured with the clock at 120MHz, the clock must be configured this way in order to work at the same rhythm so we could communicate with the ADS 1292 by SPI communication. This configuration let us acquire the data from the ADS 1292, and to make the graphics for both ECG signals, maternal and fetal.

The visualization software use libraries from TivaWare. It is conform by 6 canvas and 8 touchscreen bottoms. The function of this screen is based on hierarchy. Canvas and bottoms are divided from the more to the less important. Finally each bottom has a dual function; to display the signal or to return to the main screen.

We also have another 3 bottoms, the first bottom called SEL initializes the configuration to acquire and process the signal.

The other two bottoms set the sample rate and visualization. We used these bottoms because the screen is small and we need to scale and to adjust the signal for achieving better visualization. The bottoms with + and - let us the option to see from 1 to 3 seconds of the sign.

H a r d w a r e D e s i g n The design has three main stages, the transducer and analog-digital conditioning, the digital processing, and the interface and display.

1) The transducer stage consists in three rectangular silver-nickel electrodes, two of them for active monitoring while the third one is the reference electrode. According with previous studies about abdominal recordings, the optimum distance we found between the active electrodes was in a range from 10 to 15 cm. The electrodes are connected to the analog-digital stage through three shielded cables for ECG recording.The analog signal is read through one channel of the Front End ADS1292R for Biopotential Measurements and it was configured using the Tiva C Series TM4C123G LaunchPad with the following features:

Analog supply: 3.0 Volts Digital supply: 3.3 Volts Data Rate: 500 kSPS PGA gain: 12 Input Channel: Channel 1 RLD enable. The goal of this stage is to design an ADS1292 Booster Pack in order to make a kind front-end for academic or research purposes.

2) The digital processing section receives the digital signal and runs different processing techniques. These techniques involve a specific algorithm adapted from a previous researched work. The algorithm obtains the maternal and fetal RR intervals in real time starting from the abdominal ECG signal. After the signal processing, there is a storage RAM buffer for each filtered signal: abdominal (maternal-fetal), maternal and fetal.

3) Finally, in the interface and display stage, the data from de storage buffer are extracted and then display in a KenTec touchscreen, with the following features:

QVGA TFT resolution (320x240x16)

5

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

LCD colors with LED backlight Resistive Touch Overlay

T e s t i n g a n d R e s u l t s

E l e c t r o d e s The electrical analysis of the project electrodes showed us that the better length between then is around 8.5 cm. This was assume from our signal / interference graphic which shows at that distance our relation between the signal and the interference is better and causes the higher point of operation. (Figure 4)

FIGURE 4 SIGNAL / INTERFERENCE RATIO VS ELECTRODES DISTANCE

A n a l o g - D i g i t a l C o n d i t i o n i n g As mentioned before, all the tests were performed using a patient simulator. The simulator was connected to the corresponding ADS channel 1, through ECG cables.

The first test consisted in display the analogic signal in the oscilloscope (Tektronix TDS1002) screen. The analogic tests were done using the default front- end configuration, it includes a factor gain of 6 for de PGAs because of that the signal visualization only was possible connecting an Instrumentation Amplifier on corresponding pin to PGA1. The Instrumentation Amplifier allowed us the signal visualization, due to the acquired signal had a small voltage value (0.5mV 1.5 mV). The amplitude in the display signal was in the range between 500mV until 1.0V. Thanks to this test was possible to verify the ADS1292R analog operation.

Once the Front End was configured through SPI communication, the test were focus in acquiring signals with the minimum noise levels, fitting the electrode-ADS1292 interface in order to eliminate offset voltages and external noise.

There were multiple tests using different configurations for the gain factor in both of the Front End Channels, in this test stage the Instrumentation Amplifier was removed from the design, and the signal visualization was possible using an Analog-Logical-Digital Analyzer KIT from DIGILENT. The analyzer works through a specific software that could be installed in a PC.

6

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

The functional analogic design was schematized in software for PCB designs, due to the future goal is to have an ADS1292 Booster Pack.

FIGURE 5 PCB DESIGN

D i g i t a l P r o c e s s i n g We accomplish to configure the ADS1292R to be able to communicate by the SPI protocol. We make several test with different inputs for example we test the signal, also we make short-circuit and finally test the inputs with normal signal. These entire tests were made with different gains in both channels. (Figure 5)

FIGURE 6 ADS1292 TEST SIGNAL WITH GAIN = 12

7

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

When we introduce a simulated signal of the ECG on the entries of the channel 1. We could observe the processed signal in the outputs of the PGA1P and the PGA1N with the oscilloscope.

FIGURE 7 ECG SIGNAL ACQUIERED BY ADS1292 WITH GAIN = 6 We got a successful reception of the data that we obtain in the CAD with the ADS1292R toward the Tiva C. Saving the data in a vector let us analyzed the received samples.

FIGURE 8 GRAPHIC FOR BUFFERED DATA

We used the CMSIS library for the DSP and compilated it for Tiva C, then we created a FIR in order to eliminate high and very low frequency. We obtained successfully results with that processing stage and we could eliminate noise from respiration and electromyography mixed in the desired ECG signal.

I n t e r f a c e s

8

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

This is the hierarchy of the GUI using the graphic library of the TivaWare.

M a i n S c r e e n Main screen is a canvas that contains an image and two buttons, each of this buttons has a function.

By pushing the button Start shows the next screen which contains 5 buttons:

Principal Maternal Fetal m/f Abdominal The screen in the top has a label ABDOMINAL SIGNAL this label indicate the signal to deploy. The label Press SEL to start appear in the center of the screen, this means that it has to be pushed the button Sel, located on the lower right part of the board, until the button is not pressed it will not acquire the signal.

By pressing the button the intern led wich is in the lower left corner, it will start to changing color after configuring the acquisition. Ending the configuration, the led will keep a White color and the abdominal sign will display on the LCD.

9

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

By pressing the butto Maternal the label on the top of the screen will change to MATERNAL SIGNAL and only the maternal ECG will be display.

Bye pressing Fetal the label will change for FETAL SIGNAL and the fetal ECG will be display.

By pressing the button m/f the top label will change to MATERNAL & FETAL and both signals will be displayed.

If you want to return to the abdominal ECG you just have to push Abdominal.

10

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

When pressing button Principal it takes us back to the main screen where it can be seen the buttons Start and Credits and if pressed the button Credits we will watch the next screen: In this screen the team thanks the project Ixchel

C o n c l u s i o n s a n d f u t u r e W o r k After we analyze the results we can conclude we have a proper configuration for ADS1292R. We can assume that we will have a reliable signal coming out of the differential amplifiers. We learn how easy and cheap were to assemble the conditioning circuitry because we use only few passive components. After all test we got similar results for each gain factor, nevertheless the best configuration was a gain of 12 in which we could appreciate the maternal and fetal ECG. Finally, using front ends in general, allow to us the possibility to improve all academic and research techniques, in this case for medical technological purposes.

We acquired important acknowledge about the management of Tivaware libraries, which allows to save time in the development of projects related to digital signal processing and display on LCD screens.

The project aim was to achieve the separation of the two signals (Maternal and fetal), however some algorithms were tested without the better results, but we consider this stage as our next challenge. It is important to note that the real-time separation of these signals is complex and remains as an open research topic. The important point of this project is that we designed a prototype, which allows acquiring abdominal signals with a good signal to noise ratio about 10 microvolts amplitude.

A c k n o w l e d g m e n t s a n d R e f e r e n c e TivaWare Peripheral Driver Library http://www.ti.com/lit/ug/spmu298/spmu298.pdf [consulted: 10 of

January of 2014]

Tiva C Series TM4C129X Development Kit ReadMe First http://www.ti.com/lit/ug/spmu359/spmu359.pdf [consulted: 10 of January of 2014]

Tiva C Series Development and Evaluation Kits for Code Composer Studio http://www.ti.com/lit/ml/spmu352/spmu352.pdf [consulted: 15 February of 2014] TivaWare Examples USERS GUIDE PDF TivaWare Graphics Library USERS GUIDE http://www.ti.com/lit/ug/spmu300/spmu300.pdf [consulted:

15 March of 2014]

TivaWare IQmath Library USERS GUIDE PDF

11

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

TivaWare Peripheral Driver Library USERS GUIDE http://www.ti.com/lit/ug/spmu298/spmu298.pdf [consulted: 5 March of 2014] Getting Started with the Tiva TM4C123G LaunchPad Workshop Student Guide and Lab Manual PDF Digital TivaWare Peripheral Driver Library http://www.ti.com/lit/ug/spmu298/spmu298.pdf [consulted: 10

January of 2014] TivaWare Peripheral Driver Library USERS GUIDE http://www.ti.com/lit/ug/spmu298/spmu298.pdf [consulted: 5 March of 2014] TivaWare Boot Loader http://www.ti.com/lit/ug/spmu301/spmu301.pdf [consulted: 5 March of 2014] TivaWare C Series TM4C123G LaunchPad README First

http://www.ti.com/lit/ug/spmu286a/spmu286a.pdf [consulted: 3 March of 2014] Low-Power, 2-Channel, 24-Bit Analog Front-End for Biopotential Measurements http://www.ti.com/lit/ds/symlink/ads1292.pdf [consulted 5 march 2014] CORONA Fraga Jaime. Metodologa de evaluacin de algoritmos de extraccin del electrocardiograma fetal a

partir del electrocardiograma abdominal. Thesis for the masters degree in Biomedical Engineer. Mexico D.F: Universidad Autonoma Metropolitana, 2013.

JIMENEZ Angeles Luis. Estimacin computacional de la linea de base del cardiograma fetal. Thesis for the masters degree in Biomedical Engineer. Mexico D.F: Universidad Autonoma Metropolitana, 2003.

ARIAS Ortega Ronald. Diseo e implementacin de un electrocardigrafo materno-fetal como base para el desarrollo de un monitor de variables siolgicas materno-fetales. Thesis for the masters degree in Biomedical Engineer. Mexico D.F: Universidad Autonoma Metropolitana, 2010.

Franco, Sergio. Design with operational amplifiers and analog integrated circuits, 3rd Edition http://www.mit.edu/~gari/CODE/ECG_lab/

12

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

A p p e n d i x

S c h e m a t i c s

C r i t i c a l I C B i l l o f M a t e r i a l s Capacitor Resistance Others

3 4.7 nf 2 22.1 k 4 batteries of 1.5 v

4 47 pf 3 10 k 3 electrodes cables

4 0.1 F 2 100 k 3 silver-nickle

1 10 F 1 1 M 1 Tiva TM4C129XNCZAD

13

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

5 1 F 1 330 1 Tiva TM4C129X

3 experimental tablets

1 Analog Circuit Design Kit de DIGILENT

1 osciloscope Tektronix (TDS1002)

1 schmart board

1 instrumental amplifier

S o f t w a r e C o d e //***************************************************************************** //Programa de la interfaz grafica del monitor //contiene ademas la implementacin de dibujar la seal mediante una interrucpcin //por puerto //***************************************************************************** /* * librerias */ #include // #include // #include "driverlib/rom.h" #include "driverlib/rom_map.h" #include "driverlib/sysctl.h" #include "grlib/grlib.h" #include "grlib/widget.h" #include "grlib/canvas.h" #include "grlib/pushbutton.h" #include "drivers/frame.h" #include "drivers/kentec320x240x16_ssd2119.h" #include "drivers/pinout.h" #include "drivers/touch.h" #include "math.h" #include "driverlib/interrupt.h" // NIVC Nester Interrupt Vector Controller #include "driverlib/timer.h" // Drivers para el modulo del timer #include "inc/hw_ints.h" //macros que definen las interrupciones en el Tiva c #include "inc/hw_memmap.h"// macros que definen el mapeo en la memoria #include "drivers/pinout.h" #include "drivers/touch.h" #include "driverlib/gpio.h" #include "inc/hw_types.h" #include "driverlib/pin_map.h" #include "driverlib/ssi.h" #include "driverlib/sysctl.h" #include "driverlib/systick.h" #include "driverlib/rom.h" #include "mis_delays.h" //***************************************************************************** // // Canvas

14

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

// //***************************************************************************** extern tCanvasWidget g_sBackground; extern tCanvasWidget Abdominal; extern tCanvasWidget g_sCreditos; extern tCanvasWidget SegFetal; extern tCanvasWidget Materno; extern tCanvasWidget SegCombin; extern tCanvasWidget Logouam; extern tCanvasWidget g_sHello; //botones de bienvenida extern tPushButtonWidget g_sPushBtn; extern tPushButtonWidget g_sPushBtn_bis; extern tPushButtonWidget Ajustes_PushBtn; ////////////////////////////////////////// extern tPushButtonWidget g_sPushBtn_1; extern tPushButtonWidget g_sPushBtn_2; extern tPushButtonWidget g_sPushBtn_3; extern tPushButtonWidget g_sPushBtn_4; extern tPushButtonWidget PushBtnRegresar; extern tPushButtonWidget PushBtninicio; extern tPushButtonWidget PushBtAb; extern const uint8_t g_pui8Image[]; extern const uint8_t UamLogoImage[]; uint32_t ui32SysClock; // //Variables para el protocolo SPI uint32_t a,b,c,d,e,f,g,h,j; signed long CH1; signed long CH2; unsigned long Status; //Variable para la creacion del arreglo unsigned long i = 0; static long Arreglo[1500]; static long Arreglo_negativo[1500]; static long Arreglo_sumada[1500]; static float s_abdominal[1500]; static float s_materna[1500]; static float s_fetal[1500]; float Dato=0; float Dato1=0; float Dato2=0; //Variables para graficar y escalar seal float p_abdominal=90; float p_materno=90; float p_fetal=90;

15

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

int x_a = 0; int x_m= 0; int x_f = 0; int Tiempo = 0; int GananciaD= 0; char CanvasFlag =1; //1==adbominal //2=materno //3 fetal //4 materno-fetal bool flag1= false; bool flag2= false; const char *g_pcPanelNames = { "To all of us and our families" "Thanks!" }; //***************************************************************************** // Declaracin de las variables utilizadas para graficar la seal. //***************************************************************************** tContext sContext; tRectangle sRect; //////////////////////////////////////////////////////////////////// /* * Funciones que se utilizan para graficar las seales en distintos Canvas * */ //funciones para el protocolo SPI void config_spi_puertos(void); void config_ads(void); void Escribe_registros(unsigned long, unsigned long); void Recepcion_datos(void); void Escribe_comandos(unsigned long); void Buffer1(unsigned long, unsigned long); // funciones para despliegue de seal ECG /* * Funcion que realiza el escalamiento de los valores del ECG */ /* * Funcion para graficar seal de ECG del buffer */

16

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

void crear_signal(void); void grafica_signal (tContext *psContext,char,long); void ClrScreen(void); void ClrScreenBlack(void); void ClrScreenWhite(void); void PopUp (void); void CambiaText(tWidget *psWidget); //***************************************************************************** // // Funcion que es llamada al presionar el boton (cual) // //************************************************************************** void Principal (tWidget *psWidget);// sin utilizar void CreditosOnPress (tWidget *psWidget); void MaternoOnPress (tWidget *psWidget); void AbdominalOnPress (tWidget *psWidget); void FetalOnPress (tWidget *psWidget); void MaternoFetOnPress (tWidget *psWidget); //************************************************************************** //Funcion que muestra en el widget con los creditos //************************************************************************** //***************************************************************************** // // Funcion que es llamada al presionar el boton (cual) // //***************************************************************************** void OnButtonPress(tWidget *psWidget); //***************************************************************************** // // Canvas que contiene el fondo de toda la aplicacion // //***************************************************************************** Canvas(g_sBackground, WIDGET_ROOT, 0, &g_sPushBtn, &g_sKentec320x240x16_SSD2119, 0, 0, 320,240, (CANVAS_STYLE_FILL|CANVAS_STYLE_IMG), ClrBlack, 0,0, 0, 0,g_pui8Image, 0); //***************************************************************************** // // Boton que despliega el menu de opciones, accion al presionar: OnButtonPress // //***************************************************************************** RectangularButton(g_sPushBtn, &g_sBackground,&g_sPushBtn_bis, 0, &g_sKentec320x240x16_SSD2119,0, 200 , 70, 40, (PB_STYLE_OUTLINE | PB_STYLE_TEXT_OPAQUE | PB_STYLE_TEXT | PB_STYLE_FILL | PB_STYLE_RELEASE_NOTIFY), ClrBlack,ClrMediumBlue, ClrWhite, ClrWhite, g_psFontCmss22i, "Start", 0, 0, 0, 0, &OnButtonPress); //*****************************************************************************

17

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

// // Boton que despliegan los creditos // //***************************************************************************** //***************************************************************************** // // Boton que despliegan los creditos // //***************************************************************************** RectangularButton(g_sPushBtn_bis,&g_sBackground,0, 0, &g_sKentec320x240x16_SSD2119,250,200,70, 40, (PB_STYLE_OUTLINE | PB_STYLE_TEXT_OPAQUE | PB_STYLE_TEXT | PB_STYLE_FILL | PB_STYLE_RELEASE_NOTIFY), ClrBlack, ClrMediumBlue, ClrWhite, ClrWhite, g_psFontCmss22i, "Credits", 0, 0, 0, 0, &CreditosOnPress); //***************************************************************************** // // Boton que despliegan los creditos // //***************************************************************************** RectangularButton(PushBtnRegresar, WIDGET_ROOT,0, 0, &g_sKentec320x240x16_SSD2119,110, 200 ,120, 40, (PB_STYLE_OUTLINE | PB_STYLE_TEXT_OPAQUE | PB_STYLE_TEXT | PB_STYLE_FILL | PB_STYLE_RELEASE_NOTIFY), ClrBlack, ClrMediumBlue, ClrWhite, ClrWhite, g_psFontCmss22i, "Back", 0, 0, 0, 0, &Principal); //***************************************************************************** // // Boton que despliega seal materna, accin // //***************************************************************************** RectangularButton(g_sPushBtn_1,WIDGET_ROOT, &g_sPushBtn_2, 0, &g_sKentec320x240x16_SSD2119,64, 200 , 64, 40, (PB_STYLE_OUTLINE | PB_STYLE_TEXT_OPAQUE | PB_STYLE_TEXT | PB_STYLE_FILL | PB_STYLE_RELEASE_NOTIFY), ClrDarkBlue, ClrBlue, ClrWhite, ClrWhite, g_psFontCmss14i, "Noise", 0, 0, 0, 0, &MaternoOnPress); //***************************************************************************** // //boton que despliega la seal fetal unicamente, accion al presionar: DibujaFetal // //***************************************************************************** RectangularButton(g_sPushBtn_2, WIDGET_ROOT, &g_sPushBtn_3, 0, &g_sKentec320x240x16_SSD2119,128, 200 , 64, 40, (PB_STYLE_OUTLINE | PB_STYLE_TEXT_OPAQUE | PB_STYLE_TEXT | PB_STYLE_FILL | PB_STYLE_RELEASE_NOTIFY), ClrDarkBlue, ClrBlue, ClrWhite, ClrWhite, g_psFontCmss14i, "ECG", 0, 0, 0, 0,&FetalOnPress);

18

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

//***************************************************************************** // //boton que despliega la seal materna y fetal, accin al presionar: Dibujamaterna // //***************************************************************************** RectangularButton(g_sPushBtn_3, WIDGET_ROOT, 0, 0, &g_sKentec320x240x16_SSD2119, 192, 200 , 64, 40, (PB_STYLE_OUTLINE | PB_STYLE_TEXT_OPAQUE | PB_STYLE_TEXT | PB_STYLE_FILL | PB_STYLE_RELEASE_NOTIFY), ClrDarkBlue, ClrBlue, ClrWhite, ClrWhite, g_psFontCmss12i, "ECG&Noise", 0, 0, 0, 0, &MaternoFetOnPress); //***************************************************************************** // //boton que despliega el canvas que contiene el menu ajustes, accion al presionar: NINGUNA // //***************************************************************************** RectangularButton(g_sPushBtn_4, WIDGET_ROOT, 0, 0, &g_sKentec320x240x16_SSD2119, 240, 200 , 64, 40, (PB_STYLE_OUTLINE | PB_STYLE_TEXT_OPAQUE | PB_STYLE_TEXT | PB_STYLE_FILL | PB_STYLE_RELEASE_NOTIFY), ClrDarkBlue, ClrBlue, ClrWhite, ClrWhite, g_psFontCmss14i, "ajustes", 0, 0, 0, 0, 0); ///////////////////////////////////////////////////////////////////// // //boton para regresar al inicio // ///////////////////////////////////////////////////////////////////// RectangularButton(g_sPushBtninicio, WIDGET_ROOT, 0, 0, &g_sKentec320x240x16_SSD2119, 0, 200 , 64, 40, (PB_STYLE_OUTLINE | PB_STYLE_TEXT_OPAQUE | PB_STYLE_TEXT | PB_STYLE_FILL | PB_STYLE_RELEASE_NOTIFY), ClrDarkBlue, ClrBlue, ClrWhite, ClrWhite, g_psFontCmss14i, "Principal", 0, 0, 0, 0, &Principal); //////////////////////////////////////////////////// RectangularButton(PushBtnAb, WIDGET_ROOT, 0, 0, &g_sKentec320x240x16_SSD2119, 256, 200 , 64, 40, (PB_STYLE_OUTLINE | PB_STYLE_TEXT_OPAQUE | PB_STYLE_TEXT | PB_STYLE_FILL | PB_STYLE_RELEASE_NOTIFY), ClrDarkBlue, ClrBlue, ClrWhite, ClrWhite, g_psFontCmss14i, "NoiseECG", 0, 0, 0, 0, &AbdominalOnPress); //*****************************************************************************

19

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

// // Canvas que contiene la primer seal, materna // //***************************************************************************** Canvas(g_sHello, &g_sPushBtn_1, 0, 0, &g_sKentec320x240x16_SSD2119,60,90, 200, 60, (CANVAS_STYLE_FILL|CANVAS_STYLE_OUTLINE | CANVAS_STYLE_TEXT|CANVAS_STYLE_TEXT_HCENTER|CANVAS_STYLE_TEXT_VCENTER ), ClrBlack,ClrBlack, ClrWhite, g_psFontCmss14i, "Press 'SEL' to start", 0, 0); //***************************************************************************** //Canvas que contiene la segunda seal fetal // //***************************************************************************** Canvas(g_Creditos, &PushBtnRegresar, 0, 0, &g_sKentec320x240x16_SSD2119,0,90, 320, 60, (CANVAS_STYLE_FILL| CANVAS_STYLE_TEXT|CANVAS_STYLE_TEXT_HCENTER|CANVAS_STYLE_TEXT_VCENTER ), ClrWhite,0, ClrBlack, g_psFontCm20i,"To all of us and our Families", 0, 0); //***************************************************************************** // //canvas que contiene la tercera seal, materna y fetal //***************************************************************************** Canvas(Logouam,&PushBtnRegresar, 0, 0, &g_sKentec320x240x16_SSD2119,0, 0,320,43, (CANVAS_STYLE_FILL|CANVAS_STYLE_IMG), 0, 0,0,0, 0, UamLogoImage, 0); //***************************************************************************** // // //***************************************************************************** Canvas(Materno, &g_sPushBtn_1, 0, 0, &g_sKentec320x240x16_SSD2119,0,0, 320,200, (CANVAS_STYLE_FILL| CANVAS_STYLE_TEXT|CANVAS_STYLE_TEXT_HCENTER|CANVAS_STYLE_TEXT_TOP ), ClrBlack,ClrBlack, ClrWhite,g_psFontCmss14i, "MATERNAL SIGNAL", 0, 0); ///////////////////////////////////////////////////////// Canvas(SegFetal, &g_sPushBtn_2, 0, 0, &g_sKentec320x240x16_SSD2119,0,0, 320,200, (CANVAS_STYLE_FILL| CANVAS_STYLE_TEXT|CANVAS_STYLE_TEXT_HCENTER|CANVAS_STYLE_TEXT_TOP ), ClrBlack,ClrBlack, ClrWhite,g_psFontCmss14i, "FETAL SIGNAL", 0, 0); /////////////////////////////////////////////////////////// Canvas(SegCombin, &g_sPushBtn_2, 0, 0, &g_sKentec320x240x16_SSD2119,0,0, 320,200, (CANVAS_STYLE_FILL| CANVAS_STYLE_TEXT|CANVAS_STYLE_TEXT_HCENTER|CANVAS_STYLE_TEXT_TOP ), ClrBlack,ClrBlack, ClrWhite,g_psFontCmss14i, "MATERNAL & FETAL", 0, 0);

20

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

//////////////////////////////////////////////////////// // /////////////////////////////////////////////////// Canvas(Abdominal, &g_sPushBtn_2, 0, 0, &g_sKentec320x240x16_SSD2119,0,0, 320,200, (CANVAS_STYLE_FILL| CANVAS_STYLE_TEXT|CANVAS_STYLE_TEXT_HCENTER|CANVAS_STYLE_TEXT_TOP ), ClrBlack,ClrBlack, ClrWhite, g_psFontCmss14i, "ABDOMINAL SIGNAL", 0, 0); //***************************************************************************** // // The error routine that is called if the driver library encounters an error. // //***************************************************************************** #ifdef DEBUG void __error__(char *pcFilename, uint32_t ui32Line) { } #endif //***************************************************************************** //Funcion de accion del boton // //***************************************************************************** void OnButtonPress(tWidget *psWidget) { flag1= !flag1; //esta funcion quita la imagen de bienvenida GPIOPinWrite(GPIO_PORTH_BASE, GPIO_PIN_2, 0X02); //suspender conversin CanvasImageOff(&g_sBackground); CanvasFillColorSet(&g_sBackground, ClrWhite); // funciones que agregan cada uno de los botones al canvas principal // WidgetAdd((tWidget *)&g_sPushBtn_1, (tWidget *)&Abdominal); WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtn_1); WidgetAdd((tWidget *)&g_sPushBtn_1, (tWidget *)&Abdominal); WidgetAdd((tWidget *)&g_sPushBtn_1, (tWidget *)&g_sHello);// letrero de configurando ADS, temporalmente no lo utilizamos. WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtn_2); WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtn_3); WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtninicio); WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&PushBtnAb); FrameDraw(&sContext, "Abdominal");

21

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

// //funciones que quitan todos los componentes de la pantalla principal WidgetRemove((tWidget *)&g_sPushBtn); WidgetRemove((tWidget *)& PushBtnRegresar); WidgetRemove((tWidget *)&Logouam); WidgetRemove((tWidget *)&g_sPushBtn_bis); WidgetRemove((tWidget *)&g_Creditos); WidgetRemove((tWidget *)&g_Creditos); WidgetRemove((tWidget *)&Materno); WidgetRemove((tWidget *)&SegFetal); WidgetRemove((tWidget *)&SegCombin);; GrFlush(&sContext); // //Pinta el arbol de widgets configurado anteriormente WidgetPaint(WIDGET_ROOT); } //funcion de crear seales void crear_signal() { int k=0; float PI=3.1416; for ( k=0; k

22

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

ClrScreenWhite(); //esta funcion quita la imagen de bienvenida CanvasImageOff(&g_sBackground); CanvasFillColorSet(&g_sBackground, ClrWhite); WidgetRemove((tWidget *)&g_sPushBtn); WidgetRemove((tWidget *)&g_sPushBtn_bis); WidgetRemove((tWidget *)&g_sHello); // funciones que agregan cada uno de los botones al canvas principal WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&PushBtnRegresar); WidgetAdd((tWidget *)&PushBtnRegresar, (tWidget *)&g_Creditos); WidgetAdd((tWidget *)&PushBtnRegresar, (tWidget *)&Logouam); // //funciones que quitan todos los componentes de la pantalla principal // //Pinta el arbol de widgets configurado anteriormente WidgetPaint(WIDGET_ROOT); GrFlush(&sContext); } /* * Funcion llamada al precionarl el boton Materno * */ void MaternoOnPress(tWidget *psWidget) { ClrScreen(); //FrameDraw(&sContext, "Maternal Signal"); //esta funcion quita la imagen de bienvenida x_m=0; WidgetAdd((tWidget *)&g_sPushBtn_1, (tWidget *)&Materno);

23

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

// funciones que agregan cada uno de los botones al canvas principal WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtn_1);//Boton de Materno WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtn_2); WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtn_3); WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtninicio); WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&PushBtnAb); // //funciones que quitan todos los componentes de la pantalla principal WidgetRemove((tWidget *)&SegFetal); WidgetRemove((tWidget *)&Abdominal); WidgetRemove((tWidget *)&SegCombin); WidgetRemove((tWidget *)&g_sHello); GrFlush(&sContext); // //Pinta el arbol de widgets configurado anteriormente WidgetPaint(WIDGET_ROOT); CanvasFlag=2; } ///// funcion del boton fetal void FetalOnPress(tWidget *psWidget) { ClrScreenWhite(); //esta funcion quita la imagen de bienvenida x_f=0; WidgetAdd((tWidget *)&g_sPushBtn_1, (tWidget *)&SegFetal); // funciones que agregan cada uno de los botones al canvas principal WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtn_1);//Boton de Materno WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtn_2); WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtn_3); WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtninicio); WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&PushBtnAb); // //funciones que quitan todos los componentes de la pantalla principal

24

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

WidgetRemove((tWidget *)&Materno); WidgetRemove((tWidget *)&Abdominal); WidgetRemove((tWidget *)&g_sHello); GrFlush(&sContext); // //Pinta el arbol de widgets configurado anteriormente WidgetPaint(WIDGET_ROOT); CanvasFlag=3; } //////boton abdominal void MaternoFetOnPress(tWidget *psWidget) { ClrScreen(); //esta funcion quita la imagen de bienvenida x_m=0; x_f=0; WidgetAdd((tWidget *)&g_sPushBtn_1, (tWidget *)&SegCombin); // funciones que agregan cada uno de los botones al canvas principal WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtn_1);//Boton de Materno WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtn_2); WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtn_3); WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtninicio); WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&PushBtnAb); // //funciones que quitan todos los componentes de la pantalla principal WidgetRemove((tWidget *)&g_sHello); WidgetRemove((tWidget *)&Materno); WidgetRemove((tWidget *)&SegFetal); GrFlush(&sContext); // //Pinta el arbol de widgets configurado anteriormente WidgetPaint(WIDGET_ROOT); CanvasFlag=4; } ///////////////////////////////////////////////////////// //funcion boton abdominal SOLO EL BOTON ABDOMINAL

25

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

////////////////////////////////////////////////// void AbdominalOnPress(tWidget *psWidget) { ClrScreen(); //esta funcion quita la imagen de bienvenida x_a=0; CanvasFlag=1; WidgetAdd((tWidget *)&g_sPushBtn_1, (tWidget *)&Abdominal); // funciones que agregan cada uno de los botones al canvas principal WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtn_1);//Boton de Materno WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtn_2); WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtn_3); WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtninicio); WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&PushBtnAb); // //funciones que quitan todos los componentes de la pantalla principal WidgetRemove((tWidget *)&Materno); WidgetRemove((tWidget *)&SegFetal); WidgetRemove((tWidget *)&SegCombin); WidgetRemove((tWidget *)&g_sHello); GrFlush(&sContext); // //Pinta el arbol de widgets configurado anteriormente WidgetPaint(WIDGET_ROOT); } ///////////////////////////////////////// //ESTA LO HICISTE TU DAMIAN ////////////////////////////////// /* * Funciones que son llamadas para pintar los canvas */ void Principal (tWidget *psWidget) { CanvasFillColorSet(&g_sBackground, ClrBlack); ClrScreenBlack(); GPIOPinWrite(GPIO_PORTH_BASE, GPIO_PIN_2, 0X00); //suspender conversin CanvasImageOn(&g_sBackground); // // Pintamos todos los widgets iniciales //

26

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

WidgetAdd(WIDGET_ROOT, (tWidget *)&g_sBackground); WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtn); WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sPushBtn_bis); WidgetRemove((tWidget *)&g_sPushBtn_1); WidgetRemove((tWidget *)&g_sPushBtn_2); WidgetRemove((tWidget *)&g_sPushBtn_3); WidgetRemove((tWidget *)&g_sPushBtninicio); WidgetRemove((tWidget *)&PushBtnRegresar); WidgetRemove((tWidget *)&PushBtnAb); WidgetRemove((tWidget *)&g_sHello); GrFlush(&sContext); WidgetPaint(WIDGET_ROOT); }; /* * Funcion que es llamada para mostrar la pantalla de creditos * contiene un boton cuya accion es regresar a la pantalla de inicio */ /* * Funcion que escala la seal */ /* * Funcion para graficar la seal de ECG abdominal */ void grafica_signal (tContext *psContext,char grafica, long indice) { GrFlush(&sContext); GrContextForegroundSet(psContext, ClrOrange); Dato=-1*((0.00875*Arreglo[indice])+90); Dato1=-1*((0.00875*Arreglo_negativo[indice])+90); Dato2=((-1*((0.00875*Arreglo[indice]+90)))+(s_materna[indice]/2))-50; switch(grafica) { case 1: GrFlush(&sContext); GrLineDraw(psContext,x_a,p_abdominal,x_a+1,Dato2+45); if(x_a

27

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

{ x_a=0; ClrScreen(); GrFlush(&sContext); } p_abdominal=Dato2+45; break; case 2:GrFlush(&sContext); GrLineDraw(psContext,x_m,p_materno,x_m+1,s_materna[i]/2+65); if(x_m

28

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

} p_fetal=(s_materna[i]/2)+90; break; default: break; } } /* * Funcin utilizada para limpiar la pantalla cada que se grafica la seal */ void ClrScreen() { sRect.i16XMin = 0; sRect.i16YMin = 0; sRect.i16XMax = 319; sRect.i16YMax =199; GrContextForegroundSet(&sContext, ClrBlack); GrRectFill(&sContext, &sRect); GrFlush(&sContext); } void ClrScreenWhite() { sRect.i16XMin = 0; sRect.i16YMin = 0; sRect.i16XMax = 319; sRect.i16YMax =239; GrContextForegroundSet(&sContext, ClrWhite); GrRectFill(&sContext, &sRect); GrFlush(&sContext); } void ClrScreenBlack() { sRect.i16XMin = 0; sRect.i16YMin = 0; sRect.i16XMax = 319; sRect.i16YMax =239; GrContextForegroundSet(&sContext, ClrBlack); GrRectFill(&sContext, &sRect); GrFlush(&sContext); } //************************************************* //Manejador de la interrupcion de puerto, puerto P1 (SW1)

29

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

//llama la funcion Linea_1 que pinta la seal //************************************************* GPIOIP1ntltHandler() { if(flag1) { config_ads(); IntEnable(INT_GPIOH); GPIOIntClear(GPIO_PORTP_BASE, GPIO_INT_PIN_1); } else { GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_5, 0X20); SysCtldelay_miliseg(100); GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_5, 0X00); SysCtldelay_miliseg(100); GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_5, 0X20); SysCtldelay_miliseg(100); GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_5, 0X00); SysCtldelay_miliseg(100); GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_5, 0X20); SysCtldelay_miliseg(100); GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_5, 0X00); SysCtldelay_miliseg(100); GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_5, 0X20); SysCtldelay_miliseg(100); GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_5, 0X00); GPIOIntClear(GPIO_PORTP_BASE, GPIO_INT_PIN_1); } } void CambiaText(tWidget *psWidget) { CanvasTextSet((tCanvasWidget*)&psWidget, "Configurando Adquisicion..."); WidgetPaint(WIDGET_ROOT); } //************************************************************************************************************************* // _________________________________________________________________________________________________________________________ // | | // | | // | Programa para la comunicacin con el ADS | // | mediante protocolo SPI |

30

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

// |_______________________________________________________________________________________________________________________|_ // //*************************************************************************************************************************** enum spi_opcode { WAKEUP = 0x02, STANDBY = 0x04, RESET = 0x06, START = 0x08, STOP = 0x0A, RDATAC = 0x10, SDATAC = 0x11, RDATA = 0x12, RREG = 0x20, WREG = 0x40 }; enum registros { ID = 0x00, /*-----------------------------------------------------------------------------------------------| | ID: This register is programmed during device manufacture to indicate device characteristics. | |------------------------------------------------------------------------------------------------| | Bits[7:5] | Bit 4 | Bits[3:2] | Bits[1:0] | | Revision identification |-----------|------------| Revision identification | |----------------------------| high | low |------------------------------------------| | 000 = Reserved | | | 00 = ADS1191 | | 001 = Reserved | | | 01 = ADS1192 | | 010 = ADS1x9x device | | | 10 = ADS1291 | | 011 = ADS1292R device | | | 11 = ADS1292 and ADS1292R | | 100 = Reserved | | | | | 101 = Reserved | | | | | 110 = Reserved | | | | | 111 = Reserved | | | |

31

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

|------------------------------------------------------------------------------------------------| */ CONFIG1 = 0x01, /*-------------------------------------------------------------------------------| | CONFIG1: This register configures each ADC channel sample rate. | |--------------------------------------------------------------------------------| | Bit 7 | Bits[6:3] | Bits[2:0] | | Single-shot conversion |---------------------| Channel oversampling ratio | |-----------------------------| Must be set to '0' |----------------------------| | 0 = Continuous conversion | | 000 = 125 SPS | | mode (default) | | 001 = 250 SPS | | 1 = Single-shot mode | | 010 = 500 SPS (default) | | | | 011 = 1 kSPS | | | | 100 = 2 kSPS | | | | 101 = 4 kSPS | | | | 110 = 8 kSPS | | | | 111 = Do not use | |--------------------------------------------------------------------------------| */ CONFIG2 = 0x02, /*----------------------------------------------------------------------------------------------------------------------------------------------------------| | CONFIG2: This register configures the test signal, clock, reference, and LOFF buffer. | |-----------------------------------------------------------------------------------------------------------------------------------------------------------| | Bit 7 | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0 | |------------| Lead-off comparator | Reference buffer | Enables 4-V reference | CLK connection |------------| Test signal | Test signal | | Must be | power-down | power-down |-----------------------|------------------| Must be | selection | frequency | | set to '1' |--------------------------|-------------------------| 0 = 2.42-V reference | 0 = Oscillator | set to '0' |---------------|-----------------| | | 0 = Lead-off comparators | 0 = Reference buffer is | (default) | clock output | | 0 = Off | 0 = At dc | | | disabled (default) | powered down | 1 = 4.033-V reference | disabled | | (default) | (default) |

32

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

| | 1 = Lead-off | (default) | | (default) | | 1 = On | 1 = Square wave | | | comparators enabled | 1 = Reference buffer is | | 1 = Oscillator | | | at 1 Hz | | | | enabled | | clock output | | | | | | | | | enabled | | | | |-----------------------------------------------------------------------------------------------------------------------------------------------------------| */ LOFF = 0x03, /*-----------------------------------------------------------------------------------------------------------------------------| | LOFF: This register configures the lead-off detection operation. | |------------------------------------------------------------------------------------------------------------------------------| | Bits[7:5] | Bit 4 | Bits[3:2] | Bit 1 | Bit 0 | | Lead-off comparator threshold |------------| Lead-off current |------------| Lead-off frequency | |-----------------------------------------------------| Must be | magnitude | Must be |------------------------| | Comparator positive side | Comparator negative side | set to '1' |---------------------| set to '0' | 0 = At dc lead-off | |--------------------------|--------------------------| | 00 = 6 nA (default) | | detect (default) | | 000 = 95% (default) | 000 = 5% (default) | | 01 = 22 nA | | 1 = At ac lead-off | | 001 = 92.5% | 001 = 7.5% | | 10 = 6 microA | | detect at fDR / | | 010 = 90% | 010 = 10% | | 11 = 22 microA | | 4 (500 Hz for an | | 011 = 87.5% | 011 = 12.5% | | | | 2-kHz output rate) | | 100 = 85% | 100 = 15% | | | | | | 101 = 80% | 101 = 20% | | | | | | 110 = 75% | 110 = 25% | | | | | | 111 = 70% | 111 = 30% | | | | | |------------------------------------------------------------------------------------------------------------------------------| */ CH1SET = 0x04, CH2SET = 0x05, /*----------------------------------------------------------------------------------------------------------------------------------------------| | CHnSET: This register configures the power mode, PGA gain, and multiplexer settings channels. | |-----------------------------------------------------------------------------------------------------------------------------------------------|

33

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

| Bit 7 | Bits[6:4] | Bits[3:0] | | Channel n power-down | Channel n PGA gain setting | Channel 1 input selection | |--------------------------------|-------------------------------|------------------------------------------------------------------------------| | 0 = Normal operation (default) | 000 = 6 (default) | 0000 = Normal electrode input (default) | | 1 = Channel 1 power-down | 001 = 1 | 0001 = Input shorted (for offset measurements) | | | 010 = 2 | 0010 = RLD_MEASURE | | | 011 = 3 | 0011 = MVDD for supply measurement | | | 100 = 4 | 0100 = Temperature sensor | | | 101 = 8 | 0101 = Test signal | | | 110 = 12 | 0110 = RLD_DRP (positive input is connected to RLDIN) | | | | 0111 = RLD_DRM (negative input is connected to RLDIN) | | | | 1000 = RLD_DRPM (both positive and negative inputs are connected to RLDIN) | | | | 1001 = Route IN3P and IN3N to channel 1 inputs | | | | 1010 = Reserved | |-----------------------------------------------------------------------------------------------------------------------------------------------| */ RLD_SENS = 0x06, LOFF_SENS = 0x07, LOFF_STAT = 0x08, RESP1 = 0x09, RESP2 = 0x0A, GPIO = 0X0B }; void config_spi_puertos(void) { //C /*uint32_t ui32SysClock; ui32SysClock = SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ | SYSCTL_OSC_MAIN | SYSCTL_USE_PLL | SYSCTL_CFG_VCO_480), 16000000); //A 16 MHz */ PinoutSet(); // Configure the device pins. SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI2); //Habilitacion del sistema SSI2

34

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOG); //Habilitacion de los perifericos GPIO G SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOH); //Habilitacion de los perifericos GPIO K SysCtlPeripheralEnable(SYSCTL_PERIPH_GPION); SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOQ); GPIOPinConfigure(GPIO_PG7_SSI2CLK); //Pin G_7 Reloj SCLK GPIOPinConfigure(GPIO_PG6_SSI2FSS); GPIOPinConfigure(GPIO_PG4_SSI2XDAT1); //Pin G_4 Recepcion de datos GPIOPinConfigure(GPIO_PG5_SSI2XDAT0); //Pin G_5 Transmicion de datos GPIOPinTypeSSI(GPIO_PORTG_BASE, GPIO_PIN_7 | GPIO_PIN_6 | GPIO_PIN_5 | GPIO_PIN_4); GPIOPinTypeGPIOOutput(GPIO_PORTH_BASE, GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3); //Habilitaciones puerto H como salida para Start, Reset/PWDN y CS GPIOPinTypeGPIOInput(GPIO_PORTH_BASE, GPIO_PIN_0); //Habilitacion puerto H como entrada para DRDY GPIOPinTypeGPIOOutput(GPIO_PORTN_BASE, GPIO_PIN_5); GPIOPinTypeGPIOOutput(GPIO_PORTQ_BASE, GPIO_PIN_4 | GPIO_PIN_7); SSIConfigSetExpClk(SSI2_BASE, ui32SysClock, SSI_FRF_MOTO_MODE_1, SSI_MODE_MASTER, 1000000, 8); //SPI maestro, polarity 0, phase 1, a 1MHz GPIOIntTypeSet(GPIO_PORTH_BASE, GPIO_INT_PIN_0, GPIO_FALLING_EDGE); //Interrupcion por flanco de bajada GPIOIntEnable(GPIO_PORTH_BASE, GPIO_INT_PIN_0); SSIEnable(SSI2_BASE); } //Funcion de configuracion del ADS1292 void config_ads() { //GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_2, 0X04); //Clock select interno = 1 GPIOPinWrite(GPIO_PORTH_BASE, GPIO_PIN_1, 0X02); //PWDN/RESET = 1 GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_7, 0X80); GPIOPinWrite(GPIO_PORTH_BASE, GPIO_PIN_3, 0X08); //CS = 1 GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_5, 0X20); GPIOPinWrite(GPIO_PORTH_BASE, GPIO_PIN_2, 0X00); //Start = 0 GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_4, 0X00); SysCtldelay_seg(1); GPIOPinWrite(GPIO_PORTH_BASE, GPIO_PIN_1, 0X00); //PWDN/RESET = 0 GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_7, 0X00); SysCtldelay_seg(1);

35

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

GPIOPinWrite(GPIO_PORTH_BASE, GPIO_PIN_1, 0X02); //PWDN/RESET = 1 GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_7, 0X80); SysCtldelay_seg(1); GPIOPinWrite(GPIO_PORTH_BASE, GPIO_PIN_3, 0X00); //CS = 0 GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_5, 0X00); SysCtldelay_seg(1); GPIOPinWrite(GPIO_PORTH_BASE, GPIO_PIN_3, 0X08); //CS = 1 GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_5, 0X20); SysCtldelay_miliseg(50); Escribe_comandos(SDATAC); //DETIENE COMUNICACIN PARA PODER ESCRIBIR REGISTROS SysCtldelay_10microseg(1); Escribe_registros(CONFIG1 , 0x00); Escribe_registros(CONFIG2 , 0xA3); // HABILITANDO REFERENCIA INTERNA Y ENCENDIENDO TEST SIGNAL A 1HZ (REF=2.42) Escribe_registros(CH1SET, 0x10); //CANAL 1 G=1 Y OFF & SHORT CIRCUIT Escribe_registros(CH2SET, 0x10); //CANAL 2 G=1 Y OFF & SHORT CIRCUIT //Escribe_registros(LOFF, 0x01); Escribe_registros(RLD_SENS, 0x23); Escribe_registros(RESP2, 0x81); Escribe_registros(GPIO,0x00); GPIOPinWrite(GPIO_PORTH_BASE, GPIO_PIN_2, 0X04); //Start = 1 GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_4, 0X10); Escribe_comandos(RDATAC); flag1= !flag1; WidgetRemove((tWidget *)&g_sHello); WidgetPaint(WIDGET_ROOT); } void Recepcion_datos() { GPIOPinWrite(GPIO_PORTH_BASE, GPIO_PIN_3, 0X00); //CS = 0 GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_5, 0X00); SysCtlDelay(1); SysCtlDelay(1); SSIDataPut(SSI2_BASE, 0x00); SSIDataGet(SSI2_BASE, &h); while(SSIBusy(SSI2_BASE)){} SysCtlDelay(1); SSIDataPut(SSI2_BASE, 0x00); SSIDataGet(SSI2_BASE, &j);

36

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

while(SSIBusy(SSI2_BASE)){} SysCtlDelay(1); SSIDataPut(SSI2_BASE, 0x00); //while(SSIBusy(SSI0_BASE)){} SSIDataGet(SSI2_BASE, &a); while(SSIBusy(SSI2_BASE)){} SysCtlDelay(1); SysCtlDelay(1); SSIDataPut(SSI2_BASE, 0x00); //while(SSIBusy(SSI0_BASE)){} SSIDataGet(SSI2_BASE, &b); while(SSIBusy(SSI2_BASE)){} SysCtlDelay(1); SSIDataPut(SSI2_BASE, 0x00); //while(SSIBusy(SSI0_BASE)){} SSIDataGet(SSI2_BASE, &c); while(SSIBusy(SSI2_BASE)){} SysCtlDelay(1); SSIDataPut(SSI2_BASE, 0x00); //while(SSIBusy(SSI0_BASE)){} SSIDataGet(SSI2_BASE, &d); while(SSIBusy(SSI2_BASE)){} SysCtlDelay(1); SysCtlDelay(1); SSIDataPut(SSI2_BASE, 0x00); //while(SSIBusy(SSI0_BASE)){} SSIDataGet(SSI2_BASE, &e); while(SSIBusy(SSI2_BASE)){} SysCtlDelay(1); SSIDataPut(SSI2_BASE, 0x00); //while(SSIBusy(SSI0_BASE)){} SSIDataGet(SSI2_BASE, &f); while(SSIBusy(SSI2_BASE)){} SysCtlDelay(1); SSIDataPut(SSI2_BASE, 0x00); //while(SSIBusy(SSI0_BASE)){} SSIDataGet(SSI2_BASE, &g); while(SSIBusy(SSI2_BASE)){} SysCtlDelay(1); CH1 = 0; CH1 = c | (b

37

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

if (CH2 > 8388607) // si el bit 23 es 1 dara un nmero mayor a este valor { CH2 &= 0x007FFFFF; CH2 = CH2-8388608; } SysCtlDelay(1); Buffer1(CH1, CH2); if (i == 1500) { i=0; } GPIOPinWrite(GPIO_PORTH_BASE, GPIO_PIN_3, 0X08); //CS = 1 GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_5, 0X20); } //Funcion de Interrupcion void Interrupcion_puertoH() { Recepcion_datos(); grafica_signal (&sContext,CanvasFlag,i); GPIOIntClear(GPIO_PORTH_BASE, GPIO_INT_PIN_0); } //Funcion que escribe comandos void Escribe_comandos(unsigned long opcode) { GPIOPinWrite(GPIO_PORTH_BASE, GPIO_PIN_3, 0X00); //CS = 0 GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_5, 0X00); SysCtldelay_5microseg(1); SSIDataPut(SSI2_BASE, opcode); while(SSIBusy(SSI2_BASE)){} SysCtldelay_10microseg(1); GPIOPinWrite(GPIO_PORTH_BASE, GPIO_PIN_3, 0X08); //CS = 1 GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_5, 0X20); } //Funcion que describe la escritura de Datos sobre un Registro void Escribe_registros(unsigned long registro, unsigned long dato) { GPIOPinWrite(GPIO_PORTH_BASE, GPIO_PIN_3, 0X00); //CS = 0 GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_5, 0X00); SysCtldelay_5microseg(1); SSIDataPut(SSI2_BASE, 0x40 | registro); while(SSIBusy(SSI2_BASE)){} SysCtldelay_5microseg(1); SSIDataPut(SSI2_BASE, 0x00); while(SSIBusy(SSI2_BASE)){} SysCtldelay_5microseg(1); SSIDataPut(SSI2_BASE, dato); while(SSIBusy(SSI2_BASE)){} SysCtldelay_10microseg(1); GPIOPinWrite(GPIO_PORTH_BASE, GPIO_PIN_3, 0X08); //CS = 1

38

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_5, 0X20); } void Buffer1(unsigned long Dato1, unsigned long Dato2) { Arreglo[i] = Dato1; Arreglo_negativo[i]=Arreglo[i]*-1; //Arreglo2[i] = Dato2; i = i++; } ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// int main(void) { // // Configuracin del reloj usando el PLL a 120Mhz // ui32SysClock = MAP_SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ | SYSCTL_OSC_MAIN | SYSCTL_USE_PLL | SYSCTL_CFG_VCO_480), 120000000); /* * Configuracin de los puertos para utilizar el SW1 mediante interrupcion * */ SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOP); //Habilitacion de los perifericos GPIO P SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOQ); GPIOPinTypeGPIOInput(GPIO_PORTP_BASE, GPIO_PIN_1); //Configuracin del puerto P1 como entrada GPIOPinTypeGPIOOutput(GPIO_PORTQ_BASE, GPIO_PIN_4); GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_4, 0x00); GPIOPadConfigSet(GPIO_PORTP_BASE, GPIO_PIN_1, GPIO_STRENGTH_4MA, GPIO_PIN_TYPE_STD_WPU); //CONFIGURACION DE PUERTOS PARA LA COMUNICACION SPI config_spi_puertos(); crear_signal(); // // Configuracin de los pines // PinoutSet();

39

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14

// // Inicializa el driver del display // Kentec320x240x16_SSD2119Init(ui32SysClock); // // Inicializa el contenedor grafico // GrContextInit(&sContext, &g_sKentec320x240x16_SSD2119); GrContextForegroundSet(&sContext,ClrWhite); // // Inicializa el driver del touch // TouchScreenInit(ui32SysClock); // // Set del manejador del touchscreeen // TouchScreenCallbackSet(WidgetPointerMessage); // // Pintamos el el canvas de fondo // Principal (WIDGET_ROOT); /* * Configuracin y habilitacin de las interrupciones por puerto en SW1 * */ IntEnable(INT_GPIOP1); //habilitacion de las interrupciones en puerto P1 GPIOIntEnable(GPIO_PORTP_BASE,GPIO_INT_PIN_1); /* * Configuracin para utilizar le programa de comunicacin SPI */ while(1) { // // Process any messages from or for the widgets. // WidgetMessageQueueProcess(); } }

40

Ixch

el. M

ater

nal-F

etal

ECG

mon

itor

| 2

4/05

/14