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Changes added for the DISCO-L476VG
Diff: MAX30102/MAX30102.cpp
- Revision:
- 0:346a7fa07998
- Child:
- 3:7c0fb55eb3ff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MAX30102/MAX30102.cpp Wed Apr 20 21:46:06 2016 +0000 @@ -0,0 +1,223 @@ +/** \file max30102.cpp ****************************************************** +* +* Project: MAXREFDES117# +* Filename: max30102.cpp +* Description: This module is an embedded controller driver for the MAX30102 +* +* Revision History: +*\n 1-18-2016 Rev 01.00 GL Initial release. +*\n +* +* -------------------------------------------------------------------- +* +* This code follows the following naming conventions: +* +*\n char ch_pmod_value +*\n char (array) s_pmod_s_string[16] +*\n float f_pmod_value +*\n int32_t n_pmod_value +*\n int32_t (array) an_pmod_value[16] +*\n int16_t w_pmod_value +*\n int16_t (array) aw_pmod_value[16] +*\n uint16_t uw_pmod_value +*\n uint16_t (array) auw_pmod_value[16] +*\n uint8_t uch_pmod_value +*\n uint8_t (array) auch_pmod_buffer[16] +*\n uint32_t un_pmod_value +*\n int32_t * pn_pmod_value +* +* ------------------------------------------------------------------------- */ +/******************************************************************************* +* Copyright (C) 2015 Maxim Integrated Products, Inc., All Rights Reserved. +* +* Permission is hereby granted, free of charge, to any person obtaining a +* copy of this software and associated documentation files (the "Software"), +* to deal in the Software without restriction, including without limitation +* the rights to use, copy, modify, merge, publish, distribute, sublicense, +* and/or sell copies of the Software, and to permit persons to whom the +* Software is furnished to do so, subject to the following conditions: +* +* The above copyright notice and this permission notice shall be included +* in all copies or substantial portions of the Software. +* +* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES +* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, +* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +* OTHER DEALINGS IN THE SOFTWARE. +* +* Except as contained in this notice, the name of Maxim Integrated +* Products, Inc. shall not be used except as stated in the Maxim Integrated +* Products, Inc. Branding Policy. +* +* The mere transfer of this software does not imply any licenses +* of trade secrets, proprietary technology, copyrights, patents, +* trademarks, maskwork rights, or any other form of intellectual +* property whatsoever. Maxim Integrated Products, Inc. retains all +* ownership rights. +******************************************************************************* +*/ +#include "mbed.h" +#include "MAX30102.h" + +#ifdef TARGET_MAX32600MBED +I2C i2c(I2C1_SDA, I2C1_SCL); +#else +I2C i2c(I2C_SDA, I2C_SCL); +#endif + +bool maxim_max30102_write_reg(uint8_t uch_addr, uint8_t uch_data) +/** +* \brief Write a value to a MAX30102 register +* \par Details +* This function writes a value to a MAX30102 register +* +* \param[in] uch_addr - register address +* \param[in] uch_data - register data +* +* \retval true on success +*/ +{ + char ch_i2c_data[2]; + ch_i2c_data[0]=uch_addr; + ch_i2c_data[1]=uch_data; + + if(i2c.write(I2C_WRITE_ADDR, ch_i2c_data, 2, false)==0) + return true; + else + return false; +} + +bool maxim_max30102_read_reg(uint8_t uch_addr, uint8_t *uch_data) +/** +* \brief Read a MAX30102 register +* \par Details +* This function reads a MAX30102 register +* +* \param[in] uch_addr - register address +* \param[out] uch_data - pointer that stores the register data +* +* \retval true on success +*/ +{ + char ch_i2c_data; + ch_i2c_data=uch_addr; + if(i2c.write(I2C_WRITE_ADDR, &ch_i2c_data, 1, true)!=0) + return false; + if(i2c.read(I2C_READ_ADDR, &ch_i2c_data, 1, false)==0) + { + *uch_data=(uint8_t) ch_i2c_data; + return true; + } + else + return false; +} + +bool maxim_max30102_init() +/** +* \brief Initialize the MAX30102 +* \par Details +* This function initializes the MAX30102 +* +* \param None +* +* \retval true on success +*/ +{ + if(!maxim_max30102_write_reg(REG_INTR_ENABLE_1,0xc0)) // INTR setting + return false; + if(!maxim_max30102_write_reg(REG_INTR_ENABLE_2,0x00)) + return false; + if(!maxim_max30102_write_reg(REG_FIFO_WR_PTR,0x00)) //FIFO_WR_PTR[4:0] + return false; + if(!maxim_max30102_write_reg(REG_OVF_COUNTER,0x00)) //OVF_COUNTER[4:0] + return false; + if(!maxim_max30102_write_reg(REG_FIFO_RD_PTR,0x00)) //FIFO_RD_PTR[4:0] + return false; + if(!maxim_max30102_write_reg(REG_FIFO_CONFIG,0x0f)) //sample avg = 1, fifo rollover=false, fifo almost full = 17 + return false; + if(!maxim_max30102_write_reg(REG_MODE_CONFIG,0x03)) //0x02 for Red only, 0x03 for SpO2 mode 0x07 multimode LED + return false; + if(!maxim_max30102_write_reg(REG_SPO2_CONFIG,0x27)) // SPO2_ADC range = 4096nA, SPO2 sample rate (100 Hz), LED pulseWidth (400uS) + return false; + + if(!maxim_max30102_write_reg(REG_LED1_PA,0x24)) //Choose value for ~ 7mA for LED1 + return false; + if(!maxim_max30102_write_reg(REG_LED2_PA,0x24)) // Choose value for ~ 7mA for LED2 + return false; + if(!maxim_max30102_write_reg(REG_PILOT_PA,0x7f)) // Choose value for ~ 25mA for Pilot LED + return false; + return true; +} + +bool maxim_max30102_read_fifo(uint32_t *un_red_led, uint32_t *un_ir_led) +/** +* \brief Read a set of samples from the MAX30102 FIFO register +* \par Details +* This function reads a set of samples from the MAX30102 FIFO register +* +* \param[out] *un_red_led - pointer that stores the red LED reading data +* \param[out] *un_ir_led - pointer that stores the IR LED reading data +* +* \retval true on success +*/ +{ + uint32_t un_temp; + unsigned char uch_temp; + *un_red_led=0; + *un_ir_led=0; + char ch_i2c_data[6]; + + //read and clear status register + maxim_max30102_read_reg(REG_INTR_STATUS_1, &uch_temp); + maxim_max30102_read_reg(REG_INTR_STATUS_2, &uch_temp); + + ch_i2c_data[0]=REG_FIFO_DATA; + if(i2c.write(I2C_WRITE_ADDR, ch_i2c_data, 1, true)!=0) + return false; + if(i2c.read(I2C_READ_ADDR, ch_i2c_data, 6, false)!=0) + { + return false; + } + un_temp=(unsigned char) ch_i2c_data[0]; + un_temp<<=16; + *un_red_led+=un_temp; + un_temp=(unsigned char) ch_i2c_data[1]; + un_temp<<=8; + *un_red_led+=un_temp; + un_temp=(unsigned char) ch_i2c_data[2]; + *un_red_led+=un_temp; + + un_temp=(unsigned char) ch_i2c_data[3]; + un_temp<<=16; + *un_ir_led+=un_temp; + un_temp=(unsigned char) ch_i2c_data[4]; + un_temp<<=8; + *un_ir_led+=un_temp; + un_temp=(unsigned char) ch_i2c_data[5]; + *un_ir_led+=un_temp; + *un_red_led&=0x03FFFF; //Mask MSB [23:18] + *un_ir_led&=0x03FFFF; //Mask MSB [23:18] + + + return true; +} + +bool maxim_max30102_reset() +/** +* \brief Reset the MAX30102 +* \par Details +* This function resets the MAX30102 +* +* \param None +* +* \retval true on success +*/ +{ + if(!maxim_max30102_write_reg(REG_MODE_CONFIG,0x40)) + return false; + else + return true; +}