Manuel Caballero
Optical Sensor for Heart Rate Monitor IC
Diff: BH1790GLC.cpp
- Revision:
- 2:eb95a49c8a29
- Parent:
- 0:dc57dbf21001
- Child:
- 4:55075fea807c
--- a/BH1790GLC.cpp Sat Dec 07 19:31:03 2019 +0000
+++ b/BH1790GLC.cpp Sat Dec 07 19:41:58 2019 +0000
@@ -0,0 +1,252 @@
+/**
+ * @brief BH1790GLC.cpp
+ * @details Optical Sensor for Heart Rate Monitor IC.
+ * Function file.
+ *
+ *
+ * @return N/A
+ *
+ * @author Manuel Caballero
+ * @date 07/December/2019
+ * @version 07/December/2019 The ORIGIN
+ * @pre N/A.
+ * @warning N/A
+ * @pre This code belongs to AqueronteBlog ( http://unbarquero.blogspot.com ).
+ */
+
+#include "BH1790GLC.h"
+
+
+BH1790GLC::BH1790GLC ( PinName sda, PinName scl, uint32_t addr, uint32_t freq )
+ : _i2c ( sda, scl )
+ , _BH1790GLC_Addr ( addr )
+{
+ _i2c.frequency( freq );
+}
+
+
+BH1790GLC::~BH1790GLC()
+{
+}
+
+
+/**
+ * @brief BH1790GLC_GetManufacturerID ( BH1790GLC_data_t* )
+ *
+ * @details It gets the manufacturer ID.
+ *
+ * @param[in] N/A.
+ *
+ * @param[out] myManufacturerID: Manufacturer ID.
+ *
+ *
+ * @return Status of BH1790GLC_GetManufacturerID.
+ *
+ *
+ * @author Manuel Caballero
+ * @date 07/December/2019
+ * @version 07/December/2019 The ORIGIN
+ * @pre N/A
+ * @warning N/A.
+ */
+BH1790GLC::BH1790GLC_status_t BH1790GLC::BH1790GLC_GetManufacturerID ( BH1790GLC_data_t* myManufacturerID )
+{
+ char cmd = 0;
+ uint32_t aux;
+
+ /* Read the register */
+ cmd = BH1790GLC_MANUFACTURER_ID;
+ aux = _i2c.write ( _BH1790GLC_Addr, &cmd, 1U, true );
+ aux = _i2c.read ( _BH1790GLC_Addr, &cmd, 1U );
+
+
+ /* Parse data */
+ myManufacturerID->manufacturer_id = cmd;
+
+
+
+ if ( aux == I2C_SUCCESS ) {
+ return BH1790GLC_SUCCESS;
+ } else {
+ return BH1790GLC_FAILURE;
+ }
+}
+
+
+
+/**
+ * @brief BH1790GLC_GetPartID ( BH1790GLC_data_t* )
+ *
+ * @details It gets the part ID.
+ *
+ * @param[in] N/A.
+ *
+ * @param[out] myPartID: Part ID.
+ *
+ *
+ * @return Status of BH1790GLC_GetPartID.
+ *
+ *
+ * @author Manuel Caballero
+ * @date 07/December/2019
+ * @version 07/December/2019 The ORIGIN
+ * @pre N/A
+ * @warning N/A.
+ */
+BH1790GLC::BH1790GLC_status_t BH1790GLC::BH1790GLC_GetPartID ( BH1790GLC_data_t* myPartID )
+{
+ char cmd = 0;
+ uint32_t aux;
+
+ /* Read the register */
+ cmd = BH1790GLC_PART_ID;
+ aux = _i2c.write ( _BH1790GLC_Addr, &cmd, 1U, true );
+ aux = _i2c.read ( _BH1790GLC_Addr, &cmd, 1U );
+
+
+ /* Parse data */
+ myPartID->part_id = cmd;
+
+
+
+ if ( aux == I2C_SUCCESS ) {
+ return BH1790GLC_SUCCESS;
+ } else {
+ return BH1790GLC_FAILURE;
+ }
+}
+
+
+
+/**
+ * @brief BH1790GLC_SoftReset ( void )
+ *
+ * @details It performs a software reset.
+ *
+ * @param[in] N/A.
+ *
+ * @param[out] N/A.
+ *
+ *
+ * @return Status of BH1790GLC_SoftReset.
+ *
+ *
+ * @author Manuel Caballero
+ * @date 07/December/2019
+ * @version 07/December/2019 The ORIGIN
+ * @pre N/A
+ * @warning N/A.
+ */
+BH1790GLC::BH1790GLC_status_t BH1790GLC::BH1790GLC_SoftReset ( void )
+{
+ char cmd[2] = { 0 };
+ uint32_t aux;
+
+ /* Update the register */
+ cmd[0] = BH1790GLC_RESET;
+ cmd[1] = RESET_SWRESET_ENABLED;
+ aux = _i2c.write ( _BH1790GLC_Addr, &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), false );
+
+
+
+ if ( aux == I2C_SUCCESS ) {
+ return BH1790GLC_SUCCESS;
+ } else {
+ return BH1790GLC_FAILURE;
+ }
+}
+
+
+/**
+ * @brief BH1790GLC_StartMeasurement ( BH1790GLC_data_t )
+ *
+ * @details It triggers a new measurement sample.
+ *
+ * @param[in] myConfData: System control setting and Measurement control setting.
+ *
+ * @param[out] N/A.
+ *
+ *
+ * @return Status of BH1790GLC_StartMeasurement.
+ *
+ *
+ * @author Manuel Caballero
+ * @date 07/December/2019
+ * @version 07/December/2019 The ORIGIN
+ * @pre Start measurement by writing MEAS_ST=1 after writing RDY=1. Measurement doesn`t
+ * restart if writing MEAS_ST=1 after start measurement. When stop measurement, write SWRESET=1
+ * without writing MEAS_ST=0 (for changing some parameters as well).
+ * @pre The user MUST RESPECT the measurement time, T_INT = 28ms ( maximum ).
+ * @pre The function uses auto-increment.
+ * @warning System control setting and measurement control setting must be initialized in order to guarantee
+ * the correct behavior of the device.
+ */
+BH1790GLC::BH1790GLC_status_t BH1790GLC::BH1790GLC_StartMeasurement ( BH1790GLC_data_t myConfData )
+{
+ char cmd[4] = { 0 };
+ uint32_t aux;
+
+ /* Write the register */
+ cmd[0] = BH1790GLC_MEAS_CONTROL1;
+ cmd[1] = ( myConfData.rdy | myConfData.led_lighting_freq | myConfData.rcycle );
+ cmd[2] = ( myConfData.led_en | myConfData.led_on_time | myConfData.led_current );
+ cmd[3] = MEAS_START_MEAS_ST_MEASUREMENT_START;
+ aux = _i2c.write ( _BH1790GLC_Addr, &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), false );
+
+
+
+ if ( aux == I2C_SUCCESS ) {
+ return BH1790GLC_SUCCESS;
+ } else {
+ return BH1790GLC_FAILURE;
+ }
+}
+
+
+
+/**
+ * @brief BH1790GLC_GetRawDataOut ( void )
+ *
+ * @details It gets the DATAOUT ( DATAOUT_LEDOFF and DATAOUT_LEDON data ). Raw data value.
+ *
+ * @param[in] N/A.
+ *
+ * @param[out] myRawDataOut: Raw data for DATAOUT_LEDOFF and DATAOUT_LEDON.
+ *
+ *
+ * @return Status of BH1790GLC_GetRawDataOut.
+ *
+ *
+ * @author Manuel Caballero
+ * @date 07/December/2019
+ * @version 07/December/2019 The ORIGIN
+ * @pre This function uses auto-increment.
+ * @warning N/A.
+ */
+BH1790GLC::BH1790GLC_status_t BH1790GLC::BH1790GLC_GetRawDataOut ( BH1790GLC_data_t* myRawDataOut )
+{
+ char cmd[4] = { 0 };
+ uint32_t aux;
+
+ /* Read the register */
+ cmd[0] = BH1790GLC_DATAOUT_LEDOFF_LSB;
+ aux = _i2c.write ( _BH1790GLC_Addr, &cmd[0], 1U, true );
+ aux = _i2c.read ( _BH1790GLC_Addr, &cmd[0], sizeof( cmd )/sizeof( cmd[0] ) );
+
+ /* Parse the data */
+ myRawDataOut->dataOut_LED_OFF = cmd[1];
+ myRawDataOut->dataOut_LED_OFF <<= 8U;
+ myRawDataOut->dataOut_LED_OFF = cmd[0];
+
+ myRawDataOut->dataOut_LED_ON = cmd[3];
+ myRawDataOut->dataOut_LED_ON <<= 8U;
+ myRawDataOut->dataOut_LED_ON = cmd[2];
+
+
+
+ if ( aux == I2C_SUCCESS ) {
+ return BH1790GLC_SUCCESS;
+ } else {
+ return BH1790GLC_FAILURE;
+ }
+}