Diff: max30100.cpp
- Revision:
- 1:02f411fefe6f
- Parent:
- 0:e1e1947a9882
--- a/max30100.cpp Sun Apr 03 13:43:19 2016 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,167 +0,0 @@
-/*
- Library for the Maxim MAX30100 pulse oximetry system
- */
-
-#include "max30100.h"
-#include "functions.h"
-
-static Serial pc(SERIAL_TX, SERIAL_RX);
-
-void MAX30100::setLEDs(pulseWidth pw, ledCurrent red, ledCurrent ir){
- char data_read[1];
- char data_write[1];
- i2c_read(MAX30100_ADDRESS, MAX30100_SPO2_CONFIG, data_read, 1);
- data_read[0] = data_read[0] & 0xFC; // Set LED_PW to 00
- data_write[0] = data_read[0] | pw;
- i2c_write(MAX30100_ADDRESS, MAX30100_SPO2_CONFIG, data_write, 1); // Mask LED_PW
- data_write[0] = ((red<<4) | ir);
- i2c_write(MAX30100_ADDRESS, MAX30100_LED_CONFIG, data_write, 1); // write LED configs
-}
-
-void MAX30100::setSPO2(sampleRate sr, high_resolution hi_res){
- char data_read[1];
- char data_write[1];
- i2c_read(MAX30100_ADDRESS, MAX30100_SPO2_CONFIG, data_read, 1);
- data_read[0] = data_read[0] & 0xA3; // Set SPO2_SR to 000 and SPO2_HI_RES_EN to 0
- data_write[0] = data_read[0] | (sr<<2) | (hi_res<<6);
- i2c_write(MAX30100_ADDRESS, MAX30100_SPO2_CONFIG, data_write, 1); // Mask SPO2_SR
- i2c_read(MAX30100_ADDRESS, MAX30100_CONFIG, data_read, 1);
- data_write[0] = data_read[0] & 0xF8; // Set Mode to 000
- i2c_write(MAX30100_ADDRESS, MAX30100_CONFIG, data_write, 1); // Mask MODE
-}
-
-void MAX30100::setInterruptSPO2(void){
- char data_read[1];
- char data_write[1];
- i2c_read(MAX30100_ADDRESS, MAX30100_INT_ENABLE, data_read, 1);
- data_write[0] = data_read[0] | 0x10; // Set Interrupt enable for SPO2
- i2c_write(MAX30100_ADDRESS, MAX30100_INT_ENABLE, data_write, 1); // Mask ENB_SPO2_RDY
-}
-
-int MAX30100::getNumSamp(void){
- char data_read[1];
- i2c_read(MAX30100_ADDRESS, MAX30100_FIFO_W_POINTER, data_read, 1);
- char wrPtr = data_read[0];
- i2c_read(MAX30100_ADDRESS, MAX30100_FIFO_R_POINTER, data_read, 1);
- char rdPtr = data_read[0];
- return (abs( 16 + (int)wrPtr - (int)rdPtr ) % 16);
-}
-
-void MAX30100::setTemp(void){
- char data_read[1];
- char data_write[1];
- i2c_read(MAX30100_ADDRESS, MAX30100_CONFIG, data_read, 1);
- data_write[0] = data_read[0] | 0x0B; // Set SPO2 Mode and enable temperature
- i2c_write(MAX30100_ADDRESS, MAX30100_CONFIG, data_write, 1); // Mask MODE
- i2c_read(MAX30100_ADDRESS, MAX30100_CONFIG, data_read, 1);
-}
-
-void MAX30100::setSPO2mode(void){
- char data_read[1];
- char data_write[1];
- i2c_read(MAX30100_ADDRESS, MAX30100_CONFIG, data_read, 1);
- data_write[0] = data_read[0] | 0x03; // Set SPO2 Mode
- i2c_write(MAX30100_ADDRESS, MAX30100_CONFIG, data_write, 1);
-}
-
-int MAX30100::readTemp(void){
- char data_read[1];
- char temp_int, temp_fract;
- int temp_measured;
- i2c_read(MAX30100_ADDRESS, MAX30100_TEMP_INTEGER, data_read, 1);
- temp_int = data_read[0];
- i2c_read(MAX30100_ADDRESS, MAX30100_TEMP_FRACTION, data_read, 1);
- temp_fract = data_read[0] & 0x0F;
- temp_measured = ((int)temp_int)+(((int)temp_fract) >> 4);
- return temp_measured;
-}
-
-void MAX30100::readSensor(void){
- char data_read[4];
- i2c_read(MAX30100_ADDRESS, MAX30100_FIFO_DATA_REG, data_read, 4); // Read four times from the FIFO
- HR = (data_read[0]<<8) | data_read[1]; // Combine values to get the actual number
- SPO2 = (data_read[2]<<8) | data_read[3]; // Combine values to get the actual number
-}
-
-void MAX30100::shutdown(void){
- char data_read[1];
- char data_write[1];
- i2c_read(MAX30100_ADDRESS, MAX30100_CONFIG, data_read, 1); // Get the current register
- data_write[0] = data_read[0] | 0x80;
- i2c_write(MAX30100_ADDRESS, MAX30100_CONFIG, data_write, 1); // mask the SHDN bit
-}
-
-void MAX30100::reset(void){
- char data_read[1];
- char data_write[1];
- i2c_read(MAX30100_ADDRESS, MAX30100_CONFIG, data_read, 1); // Get the current register
- data_write[0] = data_read[0] | 0x40;
- i2c_write(MAX30100_ADDRESS, MAX30100_CONFIG, data_write, 1); // mask the RESET bit
-}
-
-void MAX30100::startup(void){
- char data_read[1];
- char data_write[1];
- i2c_read(MAX30100_ADDRESS, MAX30100_CONFIG, data_read, 1); // Get the current register
- data_write[0] = data_read[0] & 0x7F;
- i2c_write(MAX30100_ADDRESS, MAX30100_CONFIG, data_write, 1); // mask the SHDN bit
-}
-
-char MAX30100::getRevID(void){
- char data_read[1];
- i2c_read(MAX30100_ADDRESS, MAX30100_REVISION_ID, data_read, 1);
- return data_read[0];
-}
-
-char MAX30100::getPartID(void){
- char data_read[1];
- i2c_read(MAX30100_ADDRESS, MAX30100_PART_ID, data_read, 1);
- return data_read[0];
-}
-
-void MAX30100::begin(pulseWidth pw, ledCurrent ir, sampleRate sr){
- char data_write[1];
- data_write[0] = 0x03;
- i2c_write(MAX30100_ADDRESS, MAX30100_CONFIG, data_write, 1); // Heart rate only
- data_write[0] = ir;
- i2c_write(MAX30100_ADDRESS, MAX30100_LED_CONFIG, data_write, 1);
- data_write[0] = ((sr<<2)|pw);
- i2c_write(MAX30100_ADDRESS, MAX30100_SPO2_CONFIG, data_write, 1);
-}
-
-void MAX30100::init(pulseWidth pw, sampleRate sr, high_resolution hi_res, ledCurrent red, ledCurrent ir){
-
- setLEDs(pw, red, ir);
- setSPO2(sr, hi_res);
-
-}
-
-void MAX30100::printRegisters(void){
- char data_read[1];
- i2c_read(MAX30100_ADDRESS, MAX30100_INT_STATUS, data_read, 1);
- pc.printf("INT_STATUS: %#4X\r\n", data_read[0]);
- i2c_read(MAX30100_ADDRESS, MAX30100_INT_ENABLE, data_read, 1);
- pc.printf("INT_ENABLE: %#4X\r\n", data_read[0]);
- i2c_read(MAX30100_ADDRESS, MAX30100_FIFO_W_POINTER, data_read, 1);
- pc.printf("FIFO_W_POINTER: %#4X\r\n", data_read[0]);
- i2c_read(MAX30100_ADDRESS, MAX30100_OVR_COUNTER, data_read, 1);
- pc.printf("OVR_COUNTER: %#4X\r\n", data_read[0]);
- i2c_read(MAX30100_ADDRESS, MAX30100_FIFO_R_POINTER, data_read, 1);
- pc.printf("FIFO_R_POINTER: %#4X\r\n", data_read[0]);
- i2c_read(MAX30100_ADDRESS, MAX30100_FIFO_DATA_REG, data_read, 1);
- pc.printf("FIFO_DATA_REG: %#4X\r\n", data_read[0]);
- i2c_read(MAX30100_ADDRESS, MAX30100_CONFIG, data_read, 1);
- pc.printf("CONFIG: %#4X\r\n", data_read[0]);
- i2c_read(MAX30100_ADDRESS, MAX30100_SPO2_CONFIG, data_read, 1);
- pc.printf("SPO2_CONFIG: %#4X\r\n", data_read[0]);
- i2c_read(MAX30100_ADDRESS, MAX30100_LED_CONFIG, data_read, 1);
- pc.printf("LED_CONFIG: %#4X\r\n", data_read[0]);
- i2c_read(MAX30100_ADDRESS, MAX30100_TEMP_INTEGER, data_read, 1);
- pc.printf("TEMP_INTEGER: %#4X\r\n", data_read[0]);
- i2c_read(MAX30100_ADDRESS, MAX30100_TEMP_FRACTION, data_read, 1);
- pc.printf("TEMP_FRACTION: %#4X\r\n", data_read[0]);
- i2c_read(MAX30100_ADDRESS, MAX30100_REVISION_ID, data_read, 1);
- pc.printf("REVISION_ID: %#4X\r\n", data_read[0]);
- i2c_read(MAX30100_ADDRESS, MAX30100_PART_ID, data_read, 1);
- pc.printf("PART_ID: %#4X\r\n", data_read[0]);
-}
