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/**
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******************************************************************************
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* @file main.c
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* @author MCU Application Team
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* @brief Main program body
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2023 Puya Semiconductor Co.
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* All rights reserved.</center></h2>
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*
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* This software component is licensed by Puya under BSD 3-Clause license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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*
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2016 STMicroelectronics.
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* All rights reserved.</center></h2>
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*
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* This software component is licensed by ST under BSD 3-Clause license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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#include "py32f403xx_ll_Start_Kit.h"
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/* Private define ------------------------------------------------------------*/
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#define HAL_ADC_TSCAL1 (*(uint32_t *)(0x1fff5310)) /*!< Temperature Scale1 */
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#define HAL_ADC_TSCAL2 (*(uint32_t *)(0x1fff5400)) /*!< Temperature Scale2 */
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#define Vcc_Power 3.3l /* VCC power supply voltage, modify according to actual situation */
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#define TScal1 (float)((HAL_ADC_TSCAL1) * 3.3 / Vcc_Power) /* Voltage corresponding to calibration value at 25 ℃ */
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#define TScal2 (float)((HAL_ADC_TSCAL2) * 3.3 / Vcc_Power) /* Voltage corresponding to calibration value at 85 ℃ */
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#define TStem1 25l /* 25 ℃ */
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#define TStem2 85l /* 85 ℃ */
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#define Temp_k ((float)(TStem2-TStem1)/(float)(TScal2-TScal1)) /* Temperature calculation */
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/* Private variables ---------------------------------------------------------*/
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__IO uint32_t wait_loop_index = 0;
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__IO uint16_t hADCxConvertedData_Temperature_DegreeCelsius = 0;
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__IO uint16_t ADCxConvertedData =0;
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/* Private user code ---------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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static void APP_SystemClockConfig(void);
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static void APP_AdcConfig(void);
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static void APP_AdcCalibrate(void);
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/**
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* @brief Main program.
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* @param None
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* @retval int
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*/
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int main(void)
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{
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/* Enable SYSCFG and PWR clock */
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LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_SYSCFG);
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LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_PWR);
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/* 3 bits for pre-emption priority, 0 bits for subpriority */
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NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_3);
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/* Configure system clock */
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APP_SystemClockConfig();
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BSP_USART_Config();
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/* ADC configuration */
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APP_AdcConfig();
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/* ADC calibration */
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APP_AdcCalibrate();
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LL_mDelay(1);
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/* Enable ADC */
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LL_ADC_Enable(ADC1);
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LL_mDelay(1);
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while (1)
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{
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LL_ADC_REG_StartConversionSWStart(ADC1);
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while(LL_ADC_IsActiveFlag_EOS(ADC1)==0)
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{
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}
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LL_ADC_ClearFlag_EOS(ADC1);
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ADCxConvertedData = LL_ADC_REG_ReadConversionData12(ADC1);
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hADCxConvertedData_Temperature_DegreeCelsius =(int16_t)(Temp_k * ADCxConvertedData - Temp_k * TScal1 + TStem1);
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printf("Temperature: %d\r\n",hADCxConvertedData_Temperature_DegreeCelsius);
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LL_mDelay(1000);
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}
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}
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/**
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* @brief ADC Configuration Function.
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* @param None
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* @retval None
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*/
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static void APP_AdcConfig()
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{
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/* Enable ADC clock */
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LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_ADC1);
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/* Set ADC to PCLK Quad */
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LL_RCC_SetADCClockSource(LL_RCC_ADC_CLKSOURCE_PCLK2_DIV4);
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/* Set internal mode to Temperature */
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LL_ADC_SetCommonPathInternalCh(__LL_ADC_COMMON_INSTANCE(ADC1), LL_ADC_PATH_INTERNAL_TEMPSENSOR);
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wait_loop_index = ((LL_ADC_DELAY_TEMPSENSOR_STAB_US * (SystemCoreClock / (100000 * 2))) / 10);
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while(wait_loop_index != 0)
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{
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wait_loop_index--;
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}
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/* Set the resolution to 12 bits */
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LL_ADC_SetResolution(ADC1, LL_ADC_RESOLUTION_12B);
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/* Set data right alignment */
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LL_ADC_SetDataAlignment(ADC1, LL_ADC_DATA_ALIGN_RIGHT);
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/* Disable scanning mode */
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LL_ADC_SetSequencersScanMode(ADC1, LL_ADC_SEQ_SCAN_DISABLE);
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/* Set General Group Trigger Software */
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LL_ADC_REG_SetTriggerSource(ADC1, LL_ADC_REG_TRIG_SOFTWARE);
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/* Set regular group single conversion mode */
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LL_ADC_REG_SetContinuousMode(ADC1, LL_ADC_REG_CONV_SINGLE);
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/* Set regular group DMA mode None */
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LL_ADC_REG_SetDMATransfer(ADC1, LL_ADC_REG_DMA_TRANSFER_NONE);
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/* Set regular group sequence length 1 */
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LL_ADC_REG_SetSequencerLength(ADC1, LL_ADC_REG_SEQ_SCAN_DISABLE);
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/* Disable regular group discont mode */
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LL_ADC_REG_SetSequencerDiscont(ADC1, LL_ADC_REG_SEQ_DISCONT_DISABLE);
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/* Set regular group RANK1 channel Temperature */
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LL_ADC_REG_SetSequencerRanks(ADC1, LL_ADC_REG_RANK_1, LL_ADC_CHANNEL_TEMPSENSOR);
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/* Set the sampling time to 239.5Cycles */
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LL_ADC_SetChannelSamplingTime(ADC1, LL_ADC_CHANNEL_TEMPSENSOR, LL_ADC_SAMPLINGTIME_239CYCLES_5);
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}
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/**
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* @brief ADC calibration function.
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* @param None
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* @retval None
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*/
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static void APP_AdcCalibrate()
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{
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#if (USE_TIMEOUT == 1)
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uint32_t Timeout = 0; /* Variable used for timeout management */
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#endif /* USE_TIMEOUT */
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if (LL_ADC_IsEnabled(ADC1) == 0)
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{
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/* Enable ADC calibration */
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LL_ADC_StartCalibration(ADC1);
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/* Poll for ADC effectively calibrated */
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#if (USE_TIMEOUT == 1)
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Timeout = ADC_CALIBRATION_TIMEOUT_MS;
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#endif /* USE_TIMEOUT */
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while (LL_ADC_IsCalibrationOnGoing(ADC1) != 0)
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{
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#if (USE_TIMEOUT == 1)
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/* Check Systick counter flag to decrement the time-out value */
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if (LL_SYSTICK_IsActiveCounterFlag())
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{
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if(Timeout-- == 0)
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{
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APP_ErrorHandler();
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}
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}
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#endif /* USE_TIMEOUT */
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}
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/* if(LL_ADC_GetCalibrationOffsetStatus(ADC1)!=LL_ADC_CAL_OFFSET_STATUS_SUCCESS) */
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/* { */
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/* APP_ErrorHandler(); */
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/* } */
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}
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}
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/**
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* @brief Configure system clock
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* @param None
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* @retval None
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*/
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static void APP_SystemClockConfig(void)
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{
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/* Enable HSI */
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LL_RCC_HSI_Enable();
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while(LL_RCC_HSI_IsReady() != 1)
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{
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}
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/* Set AHB prescaler: HCLK = SYSCLK */
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LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
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/* Select HSI as system clock source */
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LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_HSI);
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while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_HSI)
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{
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}
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/* Set APB1 & APB2 prescaler: PCLK1 = HCLK, PCLK2 = HCLK/2 */
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LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
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LL_RCC_SetAPB2Prescaler(LL_RCC_APB2_DIV_2);
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/* Set systick to 1ms in using frequency set to 8MHz */
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LL_Init1msTick(8000000);
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/* Update the SystemCoreClock global variable(which can be updated also through SystemCoreClockUpdate function) */
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LL_SetSystemCoreClock(8000000);
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}
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/**
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* @brief Error handling function
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* @param None
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* @retval None
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*/
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void APP_ErrorHandler(void)
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{
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/* Infinite loop */
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while (1)
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{
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}
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file：Pointer to the source file name
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* @param line：assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t *file, uint32_t line)
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{
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/* User can add His own implementation to report the file name and line number,
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ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* Infinite loop */
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while (1)
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{
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}
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}
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#endif /* USE_FULL_ASSERT */
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/************************ (C) COPYRIGHT Puya *****END OF FILE******************/
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