Sergii Kaplia
/
Internal_Temperature_F103RB1
test
main.cpp
- Committer:
- hudakz
- Date:
- 2016-03-28
- Revision:
- 2:bd6594739176
- Parent:
- 1:09a5e83ea18f
- Child:
- 4:f5c604b5eceb
File content as of revision 2:bd6594739176:
/* * Reading built-in temperature sensor of STM32F103RB chip on NUCLEO-F103RB board */ #include "mbed.h" /* * STM32F103x data-sheet: * 5.3.19 Temperature sensor characteristics * Table 50. TS characteristics, Page 80 */ const float AVG_SLOPE = 4.3E-03; const float V25 = 1.43; const float ACD_TO_VOLT = 3.3 / 4096; Serial pc(USBTX, USBRX); DigitalOut led(LED1); ADC_HandleTypeDef hadc1; uint16_t adcValue; float temp; /* ADC1 init function */ void MX_ADC1_Init(void) { ADC_ChannelConfTypeDef sConfig; /**Common config */ hadc1.Instance = ADC1; hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE; hadc1.Init.ContinuousConvMode = DISABLE; hadc1.Init.DiscontinuousConvMode = DISABLE; hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START; hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT; hadc1.Init.NbrOfConversion = 1; HAL_ADC_Init(&hadc1); /**Configure Regular Channel */ sConfig.Channel = ADC_CHANNEL_TEMPSENSOR; sConfig.Rank = 1; sConfig.SamplingTime = ADC_SAMPLETIME_239CYCLES_5; HAL_ADC_ConfigChannel(&hadc1, &sConfig); } int main() { MX_ADC1_Init(); while(HAL_ADCEx_Calibration_Start(&hadc1) != HAL_OK); while(1) { /* * STM32F103xx Reference Manual: * 11.10 Temperature sensor * Reading the temperature, Page 235 */ HAL_ADC_Start(&hadc1); while(HAL_ADC_PollForConversion(&hadc1, 1000000) != HAL_OK); adcValue = HAL_ADC_GetValue(&hadc1); temp = (V25 - adcValue * ACD_TO_VOLT) / AVG_SLOPE + 25.0f; pc.printf("temp = %3.1f%cC\n", temp, 176); led = !led; wait_ms(1000); } }