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Changes added for the DISCO-L476VG
MAX30102/MAX30102.cpp
- Committer:
- MaximGordon
- Date:
- 2016-04-21
- Revision:
- 3:7c0fb55eb3ff
- Parent:
- 0:346a7fa07998
- Child:
- 4:5273ab1085ab
File content as of revision 3:7c0fb55eb3ff:
/** \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 ach_i2c_data[2]; ach_i2c_data[0]=uch_addr; ach_i2c_data[1]=uch_data; if(i2c.write(I2C_WRITE_ADDR, ach_i2c_data, 2, false)==0) return true; else return false; } bool maxim_max30102_read_reg(uint8_t uch_addr, uint8_t *puch_data) /** * \brief Read a MAX30102 register * \par Details * This function reads a MAX30102 register * * \param[in] uch_addr - register address * \param[out] puch_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) { *puch_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 *pun_red_led, uint32_t *pun_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] *pun_red_led - pointer that stores the red LED reading data * \param[out] *pun_ir_led - pointer that stores the IR LED reading data * * \retval true on success */ { uint32_t un_temp; unsigned char uch_temp; *pun_red_led=0; *pun_ir_led=0; char ach_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); ach_i2c_data[0]=REG_FIFO_DATA; if(i2c.write(I2C_WRITE_ADDR, ach_i2c_data, 1, true)!=0) return false; if(i2c.read(I2C_READ_ADDR, ach_i2c_data, 6, false)!=0) { return false; } un_temp=(unsigned char) ach_i2c_data[0]; un_temp<<=16; *pun_red_led+=un_temp; un_temp=(unsigned char) ach_i2c_data[1]; un_temp<<=8; *pun_red_led+=un_temp; un_temp=(unsigned char) ach_i2c_data[2]; *pun_red_led+=un_temp; un_temp=(unsigned char) ach_i2c_data[3]; un_temp<<=16; *pun_ir_led+=un_temp; un_temp=(unsigned char) ach_i2c_data[4]; un_temp<<=8; *pun_ir_led+=un_temp; un_temp=(unsigned char) ach_i2c_data[5]; *pun_ir_led+=un_temp; *pun_red_led&=0x03FFFF; //Mask MSB [23:18] *pun_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; }