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Dependencies: MAX30003 max32630fthr DS1307
Diff: main.cpp
- Revision:
- 10:54aa50490b15
- Parent:
- 9:24ecf16eab0f
- Child:
- 11:300afaf2696b
--- a/main.cpp Wed Aug 19 19:38:17 2020 +0000 +++ b/main.cpp Mon Sep 21 23:13:36 2020 +0000 @@ -3,26 +3,29 @@ #include "mbed.h" #include "max32630fthr.h" #include "ds1307.h" - +#include <BufferedSerial.h> +#include <string> +//#include <Serial.h> Timer timer_fast; +Timer t; MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3); void task_fast(void); DigitalOut ledA(LED2); void ecg_config(MAX30003 &ecgAFE); - +BufferedSerial pc(P3_1,P3_0); // Use USB debug probe for serial link static Unbuffered +//Serial uart_1(USBTX, USBRX); // Use USB debug probe for serial link static Unbuffered +// +//Serial pc(P3_1,P3_0); volatile bool ecgFIFOIntFlag = 0; -volatile int16_t onesec_counter = 0; volatile bool timerflag = 0; void ecgFIFO_callback_1() { // Triggered when the ECG FIFO is about to be full ecgFIFOIntFlag = 1; - } int main() { - // Constants const int EINT_STATUS_MASK = 1 << 23; const int FIFO_OVF_MASK = 0x7; @@ -31,16 +34,21 @@ const int ETAG_BITS_MASK = 0x7; timer_fast.start(); DigitalOut rLed(LED1, LED_OFF); +// pc.baud(9600); - Serial pc(USBTX, USBRX); // Use USB debug probe for serial link - pc.baud(115200); // Baud rate = 115200 - + pc.set_baud(115200); // Baud rate = 115200 + pc.set_format( + /* bits */ 8, + /* parity */ BufferedSerial::None, + /* stop bit */ 1 //1 + ); + //uart_1.baud(115200); InterruptIn ecgFIFO_int(P5_4); // Config P5_4 as int. in for the ecgFIFO_int.fall(&ecgFIFO_callback_1); // ecg FIFO interrupt at falling edge SPI spiBus(SPI2_MOSI, SPI2_MISO, SPI2_SCK); // SPI bus, P5_1 = MOSI, // P5_2 = MISO, P5_0 = SCK - + MAX30003 ecgAFE(spiBus, P5_3); // New MAX30003 on spiBus, CS = P5_3 ecg_config(ecgAFE); // Config ECG @@ -51,29 +59,80 @@ uint32_t ecgFIFO, readECGSamples, idx, ETAG[32], status; int16_t ecgSample[32]; //bool timerflag = false; - int16_t ecgSample_1sec[700]; - int16_t onesec_counter = 0; + int16_t ecgSample_1sec[200]; + uint8_t ecg_1 = 0; + uint8_t ecg_2 = 0; + uint16_t onesec_counter = 0; + uint16_t onesec_counter_temp = 0; + int16_t sample = 300; + uint8_t final[10]; + uint32_t packet_1 = 1600674360; + uint16_t checksum_ = 0; + uint16_t mod_checksum = 0; + + uint8_t p_1 = 0; + uint8_t p_2 = 0; + uint8_t p_3 = 0; + uint8_t p_4 = 0; + + uint8_t data_len_1 = 0; + uint8_t data_len_2 = 0; + + uint8_t cksm_1 = 0; + uint8_t cksm_2 = 0; + uint8_t header_device_id[3] = {0,0,210}; + uint8_t header_packet_type[2] = {0,2}; + + uint8_t ending[5] = {'@','#','%','!','7'}; + + char buf[5]; while(1) { + - if (timer_fast.read() > 1) + if (timer_fast.read() > .9) { - //timerflag = 1; - ledA = !ledA; + t.start(); + //ledA = !ledA; + + + pc.write((uint8_t *)header_device_id, sizeof(header_device_id)); + + pc.write((uint8_t *)header_packet_type, sizeof(header_packet_type)); + packet_1 ++; + p_1 = packet_1 & 0xff; + p_2 = (packet_1 >> 8) & 0xff; + p_3 = (packet_1 >> 16) & 0xff; + p_4 = (packet_1 >> 24) & 0xff; + // checksum_ = checksum_ + (packet_1 & 0xffff) + ((packet_1 >> 16) & 0xffff) ; + checksum_ = checksum_ + p_1 + p_2 + p_3 + p_4 ; + uint8_t header_packet_id[4] = {p_4,p_3,p_2,p_1}; + pc.write((uint8_t *)header_packet_id, sizeof(header_packet_id)); + onesec_counter_temp = onesec_counter * 2; + data_len_1 = onesec_counter_temp & 0xff; + data_len_2 = (onesec_counter_temp >> 8) & 0xff; + checksum_ = checksum_ + data_len_1 + data_len_2; + //pc.write((uint32_t *)packet_1, sizeof(packet_1)); + uint8_t header_ecg_datalen[2] = {data_len_2,data_len_1}; + pc.write((uint8_t *)header_ecg_datalen, sizeof(header_ecg_datalen)); + mod_checksum = checksum_ % 65536 ; + cksm_1 = mod_checksum & 0xff; + cksm_2 = (mod_checksum >> 8) & 0xff; + uint8_t header_ecg_checksum[2] = {cksm_2,cksm_1}; + pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum)); + + pc.write((int16_t *)ecgSample_1sec,onesec_counter * sizeof(int16_t)); + onesec_counter = 0; + // memset(ecgSample_1sec, 0, sizeof(ecgSample_1sec)); + + pc.write((uint8_t *)ending, sizeof(ending)); + checksum_ = 0; + t.stop(); + auto us = t.elapsed_time().count(); + printf("Timer time: %llu ms \n", us); timer_fast.reset(); - int8_t header_device_id[3] = {0,0,210}; - int8_t header_packet_type[2] = {0,2}; - int8_t header_packet_id[4] = {0,0,0,0}; - int8_t header_ecg_datalen[2] = {0,onesec_counter}; - int8_t header_ecg_checksum[2] = {0,0}; - - - //pc.printf("%6d\r\n", sample); - //pc.printf("%6d\r\n", onesec_counter); - - onesec_counter = 0; } // Read back ECG samples from the FIFO else if( (ecgFIFOIntFlag==1))// && (timerflag == 0)) @@ -91,6 +150,7 @@ do { ecgFIFO = ecgAFE.readRegister( MAX30003::ECG_FIFO ); // Read FIFO ecgSample[readECGSamples] = ecgFIFO >> 8; // Isolate voltage data + ecgSample[readECGSamples] = ((ecgSample[readECGSamples]<<8)&0xFF00)|((ecgSample[readECGSamples]>>8)&0x00FF); ETAG[readECGSamples] = ( ecgFIFO >> 3 ) & ETAG_BITS_MASK; // Isolate ETAG readECGSamples++; // Increment sample counter @@ -104,31 +164,27 @@ ecgAFE.writeRegister( MAX30003::FIFO_RST , 0); // Reset FIFO rLed = 1;//notifies the user that an over flow occured } + //uint8_t header_ecg_checksum[2] = {'%','%'}; + //pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum)); - // Print results - for( idx = 0; idx < readECGSamples; idx++ ) + //pc.write((int16_t *)ecgSample,readECGSamples * sizeof(int16_t )); + //memcpy(ecgSample_1sec , ecgSample, sizeof(ecgSample)); + + //memcpy(ecgSample_1sec + (onesec_counter * sizeof(int16_t)), ecgSample, sizeof(ecgSample)); + for( idx = 0; idx < readECGSamples; idx++ ) { //pc.printf("%6d\r\n", ecgSample[idx]); ecgSample_1sec[onesec_counter] = ecgSample[idx]; + + cksm_1 = ecgSample[idx] & 0xff; + cksm_2 = (ecgSample[idx] >> 8) & 0xff; + checksum_ += cksm_1 + cksm_2; onesec_counter++; } + //onesec_counter += readECGSamples; } - // else - // { - // timerflag = 0; - // } - //else if (timerflag == 1) - //{ - //timerflag = 0; - //pc.printf("1 sec ends :\n"); - //onesec_counter = 0; - //timer_fast.reset(); - //timer_fast.start(); - //delete[] ecgSample_1sec; - //} - - + } } }