Low voltage digital temperature sensor
Dependencies: X_NUCLEO_COMMON ST_INTERFACES
Dependents: X_NUCLEO_IKS01A3 X_NUCLEO_IKS01A3 X_NUCLEO_IKS01A3
Diff: STTS751Sensor.cpp
- Revision:
- 1:5859badee052
- Parent:
- 0:128dae13c732
- Child:
- 2:2ea2e88ce467
diff -r 128dae13c732 -r 5859badee052 STTS751Sensor.cpp --- a/STTS751Sensor.cpp Wed Mar 06 10:18:41 2019 +0000 +++ b/STTS751Sensor.cpp Wed Jul 24 14:20:10 2019 +0000 @@ -4,7 +4,7 @@ * @author SRA * @version V1.0.0 * @date February 2019 - * @brief Implementation of a STTS751 temperature sensor. + * @brief Implementation of a STTS751 temperature sensor. ****************************************************************************** * @attention * @@ -50,10 +50,10 @@ */ STTS751Sensor::STTS751Sensor(DevI2C *i2c, uint8_t address, PinName int_pin) : _dev_i2c(i2c), _address(address), _int_irq(int_pin) { - assert (i2c); - _reg_ctx.write_reg = STTS751_io_write; - _reg_ctx.read_reg = STTS751_io_read; - _reg_ctx.handle = (void *)this; + assert(i2c); + _reg_ctx.write_reg = STTS751_io_write; + _reg_ctx.read_reg = STTS751_io_read; + _reg_ctx.handle = (void *)this; } /** @@ -63,30 +63,27 @@ */ int STTS751Sensor::init(void *init) { - /* Disable EVENT pin of SMBus. */ - if (stts751_pin_event_route_set(&_reg_ctx, PROPERTY_ENABLE) != 0) - { - return 1; - } + /* Disable EVENT pin of SMBus. */ + if (stts751_pin_event_route_set(&_reg_ctx, PROPERTY_ENABLE) != 0) { + return 1; + } - /* Set default ODR */ - _last_odr = 1.0f; + /* Set default ODR */ + _last_odr = 1.0f; - /* Set the resolution to the maximum allowed value */ - if (stts751_resolution_set(&_reg_ctx, STTS751_12bit) != 0) - { - return 1; - } + /* Set the resolution to the maximum allowed value */ + if (stts751_resolution_set(&_reg_ctx, STTS751_12bit) != 0) { + return 1; + } - /* Put the component in standby mode. */ - if (stts751_temp_data_rate_set(&_reg_ctx, STTS751_TEMP_ODR_OFF) != 0) - { - return 1; - } - - _is_enabled = 0; - - return 0; + /* Put the component in standby mode. */ + if (stts751_temp_data_rate_set(&_reg_ctx, STTS751_TEMP_ODR_OFF) != 0) { + return 1; + } + + _is_enabled = 0; + + return 0; } /** @@ -96,16 +93,15 @@ */ int STTS751Sensor::read_id(uint8_t *id) { - stts751_id_t buf; + stts751_id_t buf; - if (stts751_device_id_get(&_reg_ctx, &buf) != 0) - { - return 1; - } + if (stts751_device_id_get(&_reg_ctx, &buf) != 0) { + return 1; + } - *id = buf.manufacturer_id; + *id = buf.manufacturer_id; - return 0; + return 0; } /** @@ -114,21 +110,19 @@ */ int STTS751Sensor::enable() { - /* Check if the component is already enabled */ - if (_is_enabled == 1U) - { - return 0; - } + /* Check if the component is already enabled */ + if (_is_enabled == 1U) { + return 0; + } - /* Power on the component and set the odr. */ - if (set_odr(_last_odr) != 0) - { - return 1; - } + /* Power on the component and set the odr. */ + if (set_odr(_last_odr) != 0) { + return 1; + } - _is_enabled = 1; + _is_enabled = 1; - return 0; + return 0; } /** @@ -137,27 +131,24 @@ */ int STTS751Sensor::disable() { - /* Check if the component is already disabled */ - if (_is_enabled == 0U) - { - return 0; - } + /* Check if the component is already disabled */ + if (_is_enabled == 0U) { + return 0; + } - /* Save the current odr. */ - if (get_odr(&_last_odr) != 0) - { - return 1; - } - - /* Put the component in standby mode. */ - if (stts751_temp_data_rate_set(&_reg_ctx, STTS751_TEMP_ODR_OFF) != 0) - { - return 1; - } + /* Save the current odr. */ + if (get_odr(&_last_odr) != 0) { + return 1; + } - _is_enabled = 0; + /* Put the component in standby mode. */ + if (stts751_temp_data_rate_set(&_reg_ctx, STTS751_TEMP_ODR_OFF) != 0) { + return 1; + } - return 0; + _is_enabled = 0; + + return 0; } /** @@ -167,67 +158,65 @@ */ int STTS751Sensor::get_odr(float *odr) { - int ret = 0; - stts751_odr_t odr_low_level; + int ret = 0; + stts751_odr_t odr_low_level; - if (stts751_temp_data_rate_get(&_reg_ctx, &odr_low_level) != 0) - { - return 1; - } + if (stts751_temp_data_rate_get(&_reg_ctx, &odr_low_level) != 0) { + return 1; + } - switch (odr_low_level) - { - case STTS751_TEMP_ODR_OFF: - case STTS751_TEMP_ODR_ONE_SHOT: - *odr = 0.0f; - break; + switch (odr_low_level) { + case STTS751_TEMP_ODR_OFF: + case STTS751_TEMP_ODR_ONE_SHOT: + *odr = 0.0f; + break; - case STTS751_TEMP_ODR_62mHz5: - *odr = 0.0625f; - break; + case STTS751_TEMP_ODR_62mHz5: + *odr = 0.0625f; + break; - case STTS751_TEMP_ODR_125mHz: - *odr = 0.125f; - break; + case STTS751_TEMP_ODR_125mHz: + *odr = 0.125f; + break; - case STTS751_TEMP_ODR_250mHz: - *odr = 0.250f; - break; + case STTS751_TEMP_ODR_250mHz: + *odr = 0.250f; + break; - case STTS751_TEMP_ODR_500mHz: - *odr = 0.500f; - break; + case STTS751_TEMP_ODR_500mHz: + *odr = 0.500f; + break; - case STTS751_TEMP_ODR_1Hz: - *odr = 1.0f; - break; + case STTS751_TEMP_ODR_1Hz: + *odr = 1.0f; + break; - case STTS751_TEMP_ODR_2Hz: - *odr = 2.0f; - break; + case STTS751_TEMP_ODR_2Hz: + *odr = 2.0f; + break; - case STTS751_TEMP_ODR_4Hz: - *odr = 4.0f; - break; + case STTS751_TEMP_ODR_4Hz: + *odr = 4.0f; + break; - case STTS751_TEMP_ODR_8Hz: - *odr = 8.0f; - break; + case STTS751_TEMP_ODR_8Hz: + *odr = 8.0f; + break; - case STTS751_TEMP_ODR_16Hz: - *odr = 16.0f; - break; + case STTS751_TEMP_ODR_16Hz: + *odr = 16.0f; + break; - case STTS751_TEMP_ODR_32Hz: - *odr = 32.0f; - break; + case STTS751_TEMP_ODR_32Hz: + *odr = 32.0f; + break; - default: - ret = 1; - break; - } + default: + ret = 1; + break; + } - return ret; + return ret; } /** @@ -237,52 +226,46 @@ */ int STTS751Sensor::set_odr(float odr) { - stts751_odr_t new_odr; - stts751_tres_t res; + stts751_odr_t new_odr; + stts751_tres_t res; - /* Get the current resolution */ - if (stts751_resolution_get(&_reg_ctx, &res) != 0) - { - return 1; - } + /* Get the current resolution */ + if (stts751_resolution_get(&_reg_ctx, &res) != 0) { + return 1; + } - /* If the requested odr is 16Hz we cannot use the 12 bits resolution */ - if(odr == 16.0f && res == STTS751_12bit) - { - /* We force resolution to the maximum allowed value */ - if (stts751_resolution_set(&_reg_ctx, STTS751_11bit) != 0) - { - return 1; + /* If the requested odr is 16Hz we cannot use the 12 bits resolution */ + if (odr == 16.0f && res == STTS751_12bit) { + /* We force resolution to the maximum allowed value */ + if (stts751_resolution_set(&_reg_ctx, STTS751_11bit) != 0) { + return 1; + } } - } - /* If the requested odr is 32Hz we cannot use the 12 bits and 11 bits resolutions */ - if(odr == 32.0f && (res == STTS751_12bit || res == STTS751_11bit)) - { - /* We force resolution to the maximum allowed value */ - if (stts751_resolution_set(&_reg_ctx, STTS751_10bit) != 0) - { - return 1; + /* If the requested odr is 32Hz we cannot use the 12 bits and 11 bits resolutions */ + if (odr == 32.0f && (res == STTS751_12bit || res == STTS751_11bit)) { + /* We force resolution to the maximum allowed value */ + if (stts751_resolution_set(&_reg_ctx, STTS751_10bit) != 0) { + return 1; + } } - } - new_odr = (odr <= 0.0625f) ? STTS751_TEMP_ODR_62mHz5 - : (odr <= 0.125f ) ? STTS751_TEMP_ODR_125mHz - : (odr <= 0.25f ) ? STTS751_TEMP_ODR_250mHz - : (odr <= 0.5f ) ? STTS751_TEMP_ODR_500mHz - : (odr <= 1.0f ) ? STTS751_TEMP_ODR_1Hz - : (odr <= 2.0f ) ? STTS751_TEMP_ODR_2Hz - : (odr <= 4.0f ) ? STTS751_TEMP_ODR_4Hz - : (odr <= 8.0f ) ? STTS751_TEMP_ODR_8Hz - : (odr <= 16.0f ) ? STTS751_TEMP_ODR_16Hz - : STTS751_TEMP_ODR_32Hz; + new_odr = (odr <= 0.0625f) ? STTS751_TEMP_ODR_62mHz5 + : (odr <= 0.125f) ? STTS751_TEMP_ODR_125mHz + : (odr <= 0.25f) ? STTS751_TEMP_ODR_250mHz + : (odr <= 0.5f) ? STTS751_TEMP_ODR_500mHz + : (odr <= 1.0f) ? STTS751_TEMP_ODR_1Hz + : (odr <= 2.0f) ? STTS751_TEMP_ODR_2Hz + : (odr <= 4.0f) ? STTS751_TEMP_ODR_4Hz + : (odr <= 8.0f) ? STTS751_TEMP_ODR_8Hz + : (odr <= 16.0f) ? STTS751_TEMP_ODR_16Hz + : STTS751_TEMP_ODR_32Hz; - if (stts751_temp_data_rate_set(&_reg_ctx, new_odr) != 0) - { - return 1; - } + if (stts751_temp_data_rate_set(&_reg_ctx, new_odr) != 0) { + return 1; + } - return 0; + return 0; } /** @@ -292,17 +275,16 @@ */ int STTS751Sensor::get_temperature(float *value) { - int16_t raw_value = 0; + int16_t raw_value = 0; - /* Get the temperature */ - if (stts751_temperature_raw_get(&_reg_ctx, &raw_value) != 0) - { - return 1; - } + /* Get the temperature */ + if (stts751_temperature_raw_get(&_reg_ctx, &raw_value) != 0) { + return 1; + } - *value = stts751_from_lsb_to_celsius(raw_value); + *value = stts751_from_lsb_to_celsius(raw_value); - return 0; + return 0; } /** @@ -312,22 +294,19 @@ */ int STTS751Sensor::get_temp_drdy_status(uint8_t *status) { - uint8_t val; + uint8_t val; - if (stts751_flag_busy_get(&_reg_ctx, &val) != 0) - { - return 1; - } + if (stts751_flag_busy_get(&_reg_ctx, &val) != 0) { + return 1; + } - if(val) - { - *status = 0; - } else - { - *status = 1; - } + if (val) { + *status = 0; + } else { + *status = 1; + } - return 0; + return 0; } /** @@ -337,17 +316,16 @@ */ int STTS751Sensor::set_low_temp_thr(float value) { - int16_t raw_value; + int16_t raw_value; - raw_value = stts751_from_celsius_to_lsb(value); + raw_value = stts751_from_celsius_to_lsb(value); - /* Set the temperature threshold */ - if (stts751_low_temperature_threshold_set(&_reg_ctx, raw_value) != 0) - { - return 1; - } + /* Set the temperature threshold */ + if (stts751_low_temperature_threshold_set(&_reg_ctx, raw_value) != 0) { + return 1; + } - return 0; + return 0; } /** @@ -357,17 +335,16 @@ */ int STTS751Sensor::set_high_temp_thr(float value) { - int16_t raw_value; + int16_t raw_value; - raw_value = stts751_from_celsius_to_lsb(value); + raw_value = stts751_from_celsius_to_lsb(value); - /* Set the temperature threshold */ - if (stts751_high_temperature_threshold_set(&_reg_ctx, raw_value) != 0) - { - return 1; - } + /* Set the temperature threshold */ + if (stts751_high_temperature_threshold_set(&_reg_ctx, raw_value) != 0) { + return 1; + } - return 0; + return 0; } /** @@ -379,19 +356,18 @@ */ int STTS751Sensor::get_temp_limit_status(uint8_t *high_limit, uint8_t *low_limit, uint8_t *therm_limit) { - stts751_status_t status; + stts751_status_t status; - /* Read status register */ - if (stts751_status_reg_get(&_reg_ctx, &status) != 0) - { - return 1; - } + /* Read status register */ + if (stts751_status_reg_get(&_reg_ctx, &status) != 0) { + return 1; + } - *high_limit = status.t_high; - *low_limit = status.t_low; - *therm_limit = status.thrm; + *high_limit = status.t_high; + *low_limit = status.t_low; + *therm_limit = status.thrm; - return 0; + return 0; } /** @@ -401,17 +377,20 @@ */ int STTS751Sensor::set_event_pin(uint8_t enable) { - uint8_t state; - - /* The MASK1 bit in configuration register has inverted logic */ - if (enable == 0) state = PROPERTY_ENABLE; else state = PROPERTY_DISABLE; + uint8_t state; - if (stts751_pin_event_route_set(&_reg_ctx, state) != 0) - { - return 1; - } + /* The MASK1 bit in configuration register has inverted logic */ + if (enable == 0) { + state = PROPERTY_ENABLE; + } else { + state = PROPERTY_DISABLE; + } - return 0; + if (stts751_pin_event_route_set(&_reg_ctx, state) != 0) { + return 1; + } + + return 0; } /** @@ -422,12 +401,11 @@ */ int STTS751Sensor::read_reg(uint8_t reg, uint8_t *data) { - if (stts751_read_reg(&_reg_ctx, reg, data, 1) != 0) - { - return 1; - } + if (stts751_read_reg(&_reg_ctx, reg, data, 1) != 0) { + return 1; + } - return 0; + return 0; } /** @@ -438,12 +416,11 @@ */ int STTS751Sensor::write_reg(uint8_t reg, uint8_t data) { - if (stts751_write_reg(&_reg_ctx, reg, &data, 1) != 0) - { - return 1; - } + if (stts751_write_reg(&_reg_ctx, reg, &data, 1) != 0) { + return 1; + } - return 0; + return 0; } /** @@ -452,13 +429,12 @@ */ int STTS751Sensor::set_one_shot() { - /* Start One Shot Measurement */ - if(stts751_temp_data_rate_set(&_reg_ctx, STTS751_TEMP_ODR_ONE_SHOT) != 0) - { - return 1; - } + /* Start One Shot Measurement */ + if (stts751_temp_data_rate_set(&_reg_ctx, STTS751_TEMP_ODR_ONE_SHOT) != 0) { + return 1; + } - return 0; + return 0; } /** @@ -468,33 +444,29 @@ */ int STTS751Sensor::get_one_shot_status(uint8_t *status) { - uint8_t busy; + uint8_t busy; - /* Get Busy flag */ - if(stts751_flag_busy_get(&_reg_ctx, &busy) != 0) - { - return 1; - } + /* Get Busy flag */ + if (stts751_flag_busy_get(&_reg_ctx, &busy) != 0) { + return 1; + } - if(busy) - { - *status = 0; - } - else - { - *status = 1; - } + if (busy) { + *status = 0; + } else { + *status = 1; + } - return 0; + return 0; } int32_t STTS751_io_write(void *handle, uint8_t WriteAddr, uint8_t *pBuffer, uint16_t nBytesToWrite) { - return ((STTS751Sensor *)handle)->io_write(pBuffer, WriteAddr, nBytesToWrite); + return ((STTS751Sensor *)handle)->io_write(pBuffer, WriteAddr, nBytesToWrite); } int32_t STTS751_io_read(void *handle, uint8_t ReadAddr, uint8_t *pBuffer, uint16_t nBytesToRead) { - return ((STTS751Sensor *)handle)->io_read(pBuffer, ReadAddr, nBytesToRead); + return ((STTS751Sensor *)handle)->io_read(pBuffer, ReadAddr, nBytesToRead); }