Qiao li
none
Diff: max30102.cpp
- Revision:
- 2:7d005ac4146f
- Parent:
- 1:02f411fefe6f
--- a/max30102.cpp Tue Jun 21 09:43:15 2016 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,183 +0,0 @@
-/*
- * Library for the Maxim MAX30102 pulse oximetry system, I modified a copy of the MAX30100 library in May 2016
- */
-
-#include "max30102.h"
-#include "functions.h"
-
-Serial pc(USBTX, USBRX);
-
-void MAX30102::setLEDs(pulseWidth pw, ledCurrent red, ledCurrent ir){
- char data_read[1];
- char data_write[1];
- i2c_read(MAX30102_ADDRESS, MAX30102_SPO2_CONFIG, data_read, 1);
- data_read[0] = data_read[0] & 0xFD; // Set LED_PW to 01
- data_write[0] = data_read[0] | pw;
- i2c_write(MAX30102_ADDRESS, MAX30102_SPO2_CONFIG, data_write, 1); // Mask LED_PW
- data_write[0] = (red);
- i2c_write(MAX30102_ADDRESS, MAX30102_LED_CONFIG_1, data_write, 1); // write LED1 configs
- data_write[0] = (ir);
- i2c_write(MAX30102_ADDRESS, MAX30102_LED_CONFIG_2, data_write, 1); // write LED2 configs
-}
-
-void MAX30102::setSPO2(sampleRate sr, high_resolution hi_res){
- char data_read[1];
- char data_write[1];
- i2c_read(MAX30102_ADDRESS, MAX30102_SPO2_CONFIG, data_read, 1);
- data_read[0] = data_read[0] & 0x85; // Set ADC_rge to 00, SPO2_SR to 001 = sr100 and LEDpw to 01 = 118
- data_write[0] = data_read[0] | (sr<<2) | (hi_res<<6);
- i2c_write(MAX30102_ADDRESS, MAX30102_SPO2_CONFIG, data_write, 1); // Mask SPO2_SR
- i2c_read(MAX30102_ADDRESS, MAX30102_CONFIG, data_read, 1);
- data_write[0] = data_read[0] & 0xF8; // Set Mode to 000
- i2c_write(MAX30102_ADDRESS, MAX30102_CONFIG, data_write, 1); // Mask MODE
-}
-
-void MAX30102::setInterruptSPO2(void){
- char data_read[1];
- char data_write[1];
- i2c_read(MAX30102_ADDRESS, MAX30102_INT_ENABLE, data_read, 1);
- data_write[0] = data_read[0] & 0x00; // Set Interrupt enable for SPO2 | 0x10 // New: disable prox! & ~0x10
- i2c_write(MAX30102_ADDRESS, MAX30102_INT_ENABLE, data_write, 1); // Mask ENB_SPO2_RDY
-}
-
-int MAX30102::getNumSamp(void){
- char data_read[1] = {0};
-// i2c_write(MAX30102_ADDRESS, MAX30102_FIFO_W_POINTER, data_read, 1);
-// i2c_write(MAX30102_ADDRESS, MAX30102_FIFO_R_POINTER, data_read, 1);
-// wait(0.148);
- i2c_read(MAX30102_ADDRESS, MAX30102_FIFO_W_POINTER, data_read, 1);
- char wrPtr = data_read[0];
- i2c_read(MAX30102_ADDRESS, MAX30102_FIFO_R_POINTER, data_read, 1);
- char rdPtr = data_read[0];
- return ((int)wrPtr - (int)rdPtr); // New counting
- // return (abs( 16 + (int)wrPtr - (int)rdPtr ) % 16);
-}
-
-void MAX30102::setTemp(void){
- char data_read[1];
- char data_write[1];
- i2c_read(MAX30102_ADDRESS, MAX30102_TEMP_CONFIG, data_read, 1);
- data_write[0] = data_read[0] | 0x01; // Enable temperature
- i2c_write(MAX30102_ADDRESS, MAX30102_TEMP_CONFIG, data_write, 1); // Mask MODE
- i2c_read(MAX30102_ADDRESS, MAX30102_TEMP_CONFIG, data_read, 1);
-}
-
-void MAX30102::setSPO2mode(void){
- char data_read[1];
- char data_write[1];
- i2c_read(MAX30102_ADDRESS, MAX30102_CONFIG, data_read, 1);
- data_write[0] = data_read[0] | 0x03; // Set SPO2 Mode
- i2c_write(MAX30102_ADDRESS, MAX30102_CONFIG, data_write, 1);
-}
-
-int MAX30102::readTemp(void){
- char data_read[1];
- char temp_int, temp_fract;
- int temp_measured;
- i2c_read(MAX30102_ADDRESS, MAX30102_TEMP_INTEGER, data_read, 1);
- temp_int = data_read[0];
- i2c_read(MAX30102_ADDRESS, MAX30102_TEMP_FRACTION, data_read, 1);
- temp_fract = data_read[0] & 0x0F;
- temp_measured = ((int)temp_int)+(((int)temp_fract) >> 4);
- return temp_measured;
-}
-
-void MAX30102::readSensor(void){
- char data_read[6] = {0};
- HR = 0;
- SPO2 = 0;
- i2c_read(MAX30102_ADDRESS, MAX30102_FIFO_DATA_REG, data_read, 6); // Read six times from the FIFO
- HR = (data_read[0]<<16) | (data_read[1]<<8) | data_read[2]; // Combine values to get the actual number
- HR = HR>>2;
- SPO2 = (data_read[3]<<16) | (data_read[4]<<8) | data_read[5]; // Combine values to get the actual number
- SPO2 = SPO2>>2;
-}
-
-void MAX30102::shutdown(void){
- char data_read[1];
- char data_write[1];
- i2c_read(MAX30102_ADDRESS, MAX30102_CONFIG, data_read, 1); // Get the current register
- data_write[0] = data_read[0] | 0x80;
- i2c_write(MAX30102_ADDRESS, MAX30102_CONFIG, data_write, 1); // mask the SHDN bit
-}
-
-void MAX30102::reset(void){
- char data_read[1];
- char data_write[1];
- i2c_read(MAX30102_ADDRESS, MAX30102_CONFIG, data_read, 1); // Get the current register
- data_write[0] = data_read[0] | 0x40;
- i2c_write(MAX30102_ADDRESS, MAX30102_CONFIG, data_write, 1); // mask the RESET bit
-}
-
-void MAX30102::startup(void){
- char data_read[1];
- char data_write[1];
- i2c_read(MAX30102_ADDRESS, MAX30102_CONFIG, data_read, 1); // Get the current register
- data_write[0] = data_read[0] & 0x7F;
- i2c_write(MAX30102_ADDRESS, MAX30102_CONFIG, data_write, 1); // mask the SHDN bit
-}
-
-char MAX30102::getRevID(void){
- char data_read[1];
- i2c_read(MAX30102_ADDRESS, MAX30102_REVISION_ID, data_read, 1);
- return data_read[0];
-}
-
-char MAX30102::getPartID(void){
- char data_read[1];
- i2c_read(MAX30102_ADDRESS, MAX30102_PART_ID, data_read, 1);
- return data_read[0];
-}
-
-void MAX30102::begin(pulseWidth pw, ledCurrent ir, sampleRate sr){
- char data_write[1];
- data_write[0] = 0x02;
- i2c_write(MAX30102_ADDRESS, MAX30102_CONFIG, data_write, 1); // Heart rate only
- data_write[0] = ir;
- i2c_write(MAX30102_ADDRESS, MAX30102_LED_CONFIG_1, data_write, 1);
- data_write[0] = ((sr<<2)|pw);
- i2c_write(MAX30102_ADDRESS, MAX30102_SPO2_CONFIG, data_write, 1);
-}
-
-void MAX30102::init(pulseWidth pw, sampleRate sr, high_resolution hi_res, ledCurrent red, ledCurrent ir){
- char data_write[1];
-
- setLEDs(pw, red, ir);
- setSPO2(sr, hi_res);
-
- data_write[0] = 0x10;
- i2c_write(MAX30102_ADDRESS, MAX30102_FIFO_CONFIG, data_write, 1);
-
-}
-
-void MAX30102::printRegisters(void){
- char data_read[1];
- i2c_read(MAX30102_ADDRESS, MAX30102_INT_STATUS, data_read, 1);
- pc.printf("INT_STATUS: %#4X\r\n", data_read[0]);
- i2c_read(MAX30102_ADDRESS, MAX30102_INT_ENABLE, data_read, 1);
- pc.printf("INT_ENABLE: %#4X\r\n", data_read[0]);
- i2c_read(MAX30102_ADDRESS, MAX30102_FIFO_W_POINTER, data_read, 1);
- pc.printf("FIFO_W_POINTER: %#4X\r\n", data_read[0]);
- i2c_read(MAX30102_ADDRESS, MAX30102_OVR_COUNTER, data_read, 1);
- pc.printf("OVR_COUNTER: %#4X\r\n", data_read[0]);
- i2c_read(MAX30102_ADDRESS, MAX30102_FIFO_R_POINTER, data_read, 1);
- pc.printf("FIFO_R_POINTER: %#4X\r\n", data_read[0]);
- i2c_read(MAX30102_ADDRESS, MAX30102_FIFO_DATA_REG, data_read, 1);
- pc.printf("FIFO_DATA_REG: %#4X\r\n", data_read[0]);
- i2c_read(MAX30102_ADDRESS, MAX30102_CONFIG, data_read, 1);
- pc.printf("CONFIG: %#4X\r\n", data_read[0]);
- i2c_read(MAX30102_ADDRESS, MAX30102_SPO2_CONFIG, data_read, 1);
- pc.printf("SPO2_CONFIG: %#4X\r\n", data_read[0]);
- i2c_read(MAX30102_ADDRESS, MAX30102_LED_CONFIG_2, data_read, 1);
- pc.printf("LED_CONFIG: %#4X\r\n", data_read[0]);
- i2c_read(MAX30102_ADDRESS, MAX30102_TEMP_INTEGER, data_read, 1);
- pc.printf("TEMP_INTEGER: %#4X\r\n", data_read[0]);
- i2c_read(MAX30102_ADDRESS, MAX30102_TEMP_FRACTION, data_read, 1);
- pc.printf("TEMP_FRACTION: %#4X\r\n", data_read[0]);
- i2c_read(MAX30102_ADDRESS, MAX30102_TEMP_CONFIG, data_read, 1);
- pc.printf("TEMP_CONFIG: %#4X\r\n", data_read[0]);
- i2c_read(MAX30102_ADDRESS, MAX30102_REVISION_ID, data_read, 1);
- pc.printf("REVISION_ID: %#4X\r\n", data_read[0]);
- i2c_read(MAX30102_ADDRESS, MAX30102_PART_ID, data_read, 1);
- pc.printf("PART_ID: %#4X\r\n", data_read[0]);
-}