|
|
/**
|
|
|
******************************************************************************
|
|
|
* @file main.c
|
|
|
* @author MCU Application Team
|
|
|
* @brief Main program body
|
|
|
******************************************************************************
|
|
|
* @attention
|
|
|
*
|
|
|
* <h2><center>© Copyright (c) 2023 Puya Semiconductor Co.
|
|
|
* All rights reserved.</center></h2>
|
|
|
*
|
|
|
* This software component is licensed by Puya under BSD 3-Clause license,
|
|
|
* the "License"; You may not use this file except in compliance with the
|
|
|
* License. You may obtain a copy of the License at:
|
|
|
* opensource.org/licenses/BSD-3-Clause
|
|
|
*
|
|
|
******************************************************************************
|
|
|
* @attention
|
|
|
*
|
|
|
* <h2><center>© Copyright (c) 2016 STMicroelectronics.
|
|
|
* All rights reserved.</center></h2>
|
|
|
*
|
|
|
* This software component is licensed by ST under BSD 3-Clause license,
|
|
|
* the "License"; You may not use this file except in compliance with the
|
|
|
* License. You may obtain a copy of the License at:
|
|
|
* opensource.org/licenses/BSD-3-Clause
|
|
|
*
|
|
|
******************************************************************************
|
|
|
*/
|
|
|
|
|
|
/* Includes ------------------------------------------------------------------*/
|
|
|
#include "main.h"
|
|
|
#include "py32f403xx_ll_Start_Kit.h"
|
|
|
|
|
|
/* Private define ------------------------------------------------------------*/
|
|
|
#define ADC_CALIBRATION_TIMEOUT_MS 2
|
|
|
#define USE_TIMEOUT 0
|
|
|
|
|
|
/* Private variables ---------------------------------------------------------*/
|
|
|
/* Private user code ---------------------------------------------------------*/
|
|
|
/* Private macro -------------------------------------------------------------*/
|
|
|
/* Private function prototypes -----------------------------------------------*/
|
|
|
static void APP_SystemClockConfig(void);
|
|
|
static void APP_AdcConfig(void);
|
|
|
static void APP_AdcCalibrate(void);
|
|
|
static void APP_TimConfig(void);
|
|
|
|
|
|
/**
|
|
|
* @brief Main program.
|
|
|
* @param None
|
|
|
* @retval int
|
|
|
*/
|
|
|
int main(void)
|
|
|
{
|
|
|
/* Enable SYSCFG and PWR clock */
|
|
|
LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_SYSCFG);
|
|
|
LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_PWR);
|
|
|
|
|
|
/* 3 bits for pre-emption priority, 0 bits for subpriority */
|
|
|
NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_3);
|
|
|
|
|
|
/* Configure system clock */
|
|
|
APP_SystemClockConfig();
|
|
|
|
|
|
BSP_LED_Init(LED_GREEN);
|
|
|
|
|
|
BSP_USART_Config();
|
|
|
|
|
|
/* ADC configuration */
|
|
|
APP_AdcConfig();
|
|
|
|
|
|
/* ADC calibration */
|
|
|
APP_AdcCalibrate();
|
|
|
|
|
|
LL_mDelay(1);
|
|
|
|
|
|
/* Enable ADC */
|
|
|
LL_ADC_Enable(ADC1);
|
|
|
|
|
|
LL_mDelay(1);
|
|
|
|
|
|
LL_ADC_REG_StartConversionExtTrig(ADC1, LL_ADC_REG_TRIG_EXT_RISING);
|
|
|
|
|
|
/* TIM configuration */
|
|
|
APP_TimConfig();
|
|
|
|
|
|
while (1)
|
|
|
{
|
|
|
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* @brief Watchdog callback function
|
|
|
* @param None
|
|
|
* @retval None
|
|
|
*/
|
|
|
void APP_AdcAnalogWatchdogCallback(void)
|
|
|
{
|
|
|
BSP_LED_On(LED_GREEN);
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* @brief TIM Configuration Function.
|
|
|
* @param None
|
|
|
* @retval None
|
|
|
*/
|
|
|
static void APP_TimConfig()
|
|
|
{
|
|
|
/* Enable TIM3 clock */
|
|
|
LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_TIM3);
|
|
|
|
|
|
/* Set TIM3 prescaler */
|
|
|
LL_TIM_SetPrescaler(TIM3,2000);
|
|
|
|
|
|
/* Set TIM3 automatic reload value */
|
|
|
LL_TIM_SetAutoReload(TIM3, 4000);
|
|
|
|
|
|
/* Set TIM3 update trigger */
|
|
|
LL_TIM_SetTriggerOutput(TIM3,LL_TIM_TRGO_UPDATE);
|
|
|
|
|
|
/* Enable TIM3 */
|
|
|
LL_TIM_EnableCounter(TIM3);
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* @brief ADC Configuration Function.
|
|
|
* @param None
|
|
|
* @retval None
|
|
|
*/
|
|
|
static void APP_AdcConfig()
|
|
|
{
|
|
|
/* Enable GPIOA clock */
|
|
|
LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOA);
|
|
|
|
|
|
/* Configure PA4 as analog mode*/
|
|
|
LL_GPIO_SetPinMode(GPIOA, LL_GPIO_PIN_4, LL_GPIO_MODE_ANALOG);
|
|
|
|
|
|
/* Enable ADC clock */
|
|
|
LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_ADC1);
|
|
|
|
|
|
/* Set ADC to PCLK Quad */
|
|
|
LL_RCC_SetADCClockSource(LL_RCC_ADC_CLKSOURCE_PCLK2_DIV4);
|
|
|
|
|
|
/* Set the resolution to 12 bits */
|
|
|
LL_ADC_SetResolution(ADC1, LL_ADC_RESOLUTION_12B);
|
|
|
|
|
|
/* Set data right alignment */
|
|
|
LL_ADC_SetDataAlignment(ADC1, LL_ADC_DATA_ALIGN_RIGHT);
|
|
|
|
|
|
/* Disable scanning mode */
|
|
|
LL_ADC_SetSequencersScanMode(ADC1, LL_ADC_SEQ_SCAN_DISABLE);
|
|
|
|
|
|
/* Set General Group Trigger TIM3 TRGO */
|
|
|
LL_ADC_REG_SetTriggerSource(ADC1, LL_ADC_REG_TRIG_EXT_TIM3_TRGO);
|
|
|
|
|
|
/* Set regular group single conversion mode */
|
|
|
LL_ADC_REG_SetContinuousMode(ADC1, LL_ADC_REG_CONV_SINGLE);
|
|
|
|
|
|
/* Set regular group DMA mode None */
|
|
|
LL_ADC_REG_SetDMATransfer(ADC1, LL_ADC_REG_DMA_TRANSFER_NONE);
|
|
|
|
|
|
/* Set regular group sequence length bit 1 */
|
|
|
LL_ADC_REG_SetSequencerLength(ADC1, LL_ADC_REG_SEQ_SCAN_DISABLE);
|
|
|
|
|
|
/* Disable regular group discont mode */
|
|
|
LL_ADC_REG_SetSequencerDiscont(ADC1, LL_ADC_REG_SEQ_DISCONT_DISABLE);
|
|
|
|
|
|
/* Set regular group RANK1 channel 4 */
|
|
|
LL_ADC_REG_SetSequencerRanks(ADC1, LL_ADC_REG_RANK_1, LL_ADC_CHANNEL_4);
|
|
|
|
|
|
/* Set the sampling time to 41.5Cycles */
|
|
|
LL_ADC_SetChannelSamplingTime(ADC1, LL_ADC_CHANNEL_4, LL_ADC_SAMPLINGTIME_41CYCLES_5);
|
|
|
|
|
|
/* Set channel 4 as the watchdog channel */
|
|
|
LL_ADC_SetAnalogWDMonitChannels(ADC1, LL_ADC_AWD_CHANNEL_4_REG);
|
|
|
|
|
|
/* Set the upper limit of the watchdog to 0x800 */
|
|
|
LL_ADC_SetAnalogWDThresholds(ADC1, LL_ADC_AWD_THRESHOLD_HIGH,0x800);
|
|
|
|
|
|
/* Set the lower limit of the watchdog to 0x000 */
|
|
|
LL_ADC_SetAnalogWDThresholds(ADC1, LL_ADC_AWD_THRESHOLD_LOW, 0x000);
|
|
|
|
|
|
/* Enable watchdog interrupt */
|
|
|
LL_ADC_EnableIT_AWD1(ADC1);
|
|
|
|
|
|
NVIC_SetPriority(ADC1_2_IRQn, 0);
|
|
|
NVIC_EnableIRQ(ADC1_2_IRQn);
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* @brief ADC calibration function.
|
|
|
* @param None
|
|
|
* @retval None
|
|
|
*/
|
|
|
static void APP_AdcCalibrate()
|
|
|
{
|
|
|
#if (USE_TIMEOUT == 1)
|
|
|
uint32_t Timeout = 0; /* Variable used for timeout management */
|
|
|
#endif /* USE_TIMEOUT */
|
|
|
|
|
|
if (LL_ADC_IsEnabled(ADC1) == 0)
|
|
|
{
|
|
|
|
|
|
/* Enable ADC calibration */
|
|
|
LL_ADC_StartCalibration(ADC1);
|
|
|
|
|
|
/* Poll for ADC effectively calibrated */
|
|
|
#if (USE_TIMEOUT == 1)
|
|
|
Timeout = ADC_CALIBRATION_TIMEOUT_MS;
|
|
|
#endif /* USE_TIMEOUT */
|
|
|
|
|
|
while (LL_ADC_IsCalibrationOnGoing(ADC1) != 0)
|
|
|
{
|
|
|
#if (USE_TIMEOUT == 1)
|
|
|
/* Check Systick counter flag to decrement the time-out value */
|
|
|
if (LL_SYSTICK_IsActiveCounterFlag())
|
|
|
{
|
|
|
if(Timeout-- == 0)
|
|
|
{
|
|
|
APP_ErrorHandler();
|
|
|
}
|
|
|
}
|
|
|
#endif /* USE_TIMEOUT */
|
|
|
}
|
|
|
|
|
|
/* if(LL_ADC_GetCalibrationOffsetStatus(ADC1)!=LL_ADC_CAL_OFFSET_STATUS_SUCCESS) */
|
|
|
/* { */
|
|
|
/* APP_ErrorHandler(); */
|
|
|
/* } */
|
|
|
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* @brief Configure system clock
|
|
|
* @param None
|
|
|
* @retval None
|
|
|
*/
|
|
|
static void APP_SystemClockConfig(void)
|
|
|
{
|
|
|
/* Enable HSI */
|
|
|
LL_RCC_HSI_Enable();
|
|
|
while(LL_RCC_HSI_IsReady() != 1)
|
|
|
{
|
|
|
}
|
|
|
|
|
|
/* Set AHB prescaler: HCLK = SYSCLK */
|
|
|
LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
|
|
|
|
|
|
/* Select HSI as system clock source */
|
|
|
LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_HSI);
|
|
|
while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_HSI)
|
|
|
{
|
|
|
}
|
|
|
|
|
|
/* Set APB1 & APB2 prescaler: PCLK1 = HCLK, PCLK2 = HCLK/2 */
|
|
|
LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
|
|
|
LL_RCC_SetAPB2Prescaler(LL_RCC_APB2_DIV_2);
|
|
|
|
|
|
/* Set systick to 1ms in using frequency set to 8MHz */
|
|
|
LL_Init1msTick(8000000);
|
|
|
|
|
|
/* Update the SystemCoreClock global variable(which can be updated also through SystemCoreClockUpdate function) */
|
|
|
LL_SetSystemCoreClock(8000000);
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* @brief Error handling function
|
|
|
* @param None
|
|
|
* @retval None
|
|
|
*/
|
|
|
void APP_ErrorHandler(void)
|
|
|
{
|
|
|
/* Infinite loop */
|
|
|
while (1)
|
|
|
{
|
|
|
}
|
|
|
}
|
|
|
|
|
|
#ifdef USE_FULL_ASSERT
|
|
|
/**
|
|
|
* @brief Reports the name of the source file and the source line number
|
|
|
* where the assert_param error has occurred.
|
|
|
* @param file：Pointer to the source file name
|
|
|
* @param line：assert_param error line source number
|
|
|
* @retval None
|
|
|
*/
|
|
|
void assert_failed(uint8_t *file, uint32_t line)
|
|
|
{
|
|
|
/* User can add His own implementation to report the file name and line number,
|
|
|
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
|
|
|
/* Infinite loop */
|
|
|
while (1)
|
|
|
{
|
|
|
}
|
|
|
}
|
|
|
#endif /* USE_FULL_ASSERT */
|
|
|
|
|
|
/************************ (C) COPYRIGHT Puya *****END OF FILE******************/
|