diff options
Diffstat (limited to 'stm32f091/sensor.c')
| -rw-r--r-- | stm32f091/sensor.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/stm32f091/sensor.c b/stm32f091/sensor.c index f2e9e29..fc2fe2a 100644 --- a/stm32f091/sensor.c +++ b/stm32f091/sensor.c @@ -1,14 +1,26 @@ #include <FreeRTOS.h> #include <task.h> -#include <Si7021_driver.h> +#include <stm32f0xx_hal.h> +#include "main.h" #include "sensor.h" #include "backlog.h" +#define SI7021_ADDRESS ((uint16_t)(0x40) << 1) +#define REG_TEMP ((uint8_t)(0xE3)) +#define REG_HUM ((uint8_t)(0xF5)) + uint8_t ws_sensor_temperature() { - float temp = 0.f; - r_single_Si7021(&temp, Temperature); - return (uint8_t) temp; //TODO: convert with range -> util.h + uint8_t buf[12]; + int16_t val; + float temp_c; + buf[0] = REG_TEMP; + HAL_I2C_Master_Transmit(&hi2c1, SI7021_ADDRESS, buf, 1, HAL_MAX_DELAY); + HAL_I2C_Master_Receive(&hi2c1, SI7021_ADDRESS, buf, 2, HAL_MAX_DELAY); + val = ((int16_t)buf[0]<< 8 ) | (buf[1]); + temp_c= ((175.72*val)/65536) - 46.85; + + return (uint8_t) temp_c; //TODO: convert with range -> util.h } uint8_t ws_sensor_humidity() { |