175 lines
5.8 KiB
C
175 lines
5.8 KiB
C
/********************************** (C) COPYRIGHT *******************************
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* File Name : main.c
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* Author : WCH
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* Version : V1.0.0
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* Date : 2021/06/06
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* Description : Main program body.
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*********************************************************************************
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* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
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* Attention: This software (modified or not) and binary are used for
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* microcontroller manufactured by Nanjing Qinheng Microelectronics.
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*******************************************************************************/
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/*
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*@Note
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*Discontinuous mode routine:
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*ADC channel 1 (PA1) - injection group channel, channel 3 (PA3) - injection group channel,
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*channel 4 (PA4) - injection group channel, this mode
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*Next, an ADC conversion is triggered by the TIM1_CC4 event, and the above-mentioned 1 injection
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*group channel is converted in sequence each time.
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*
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*/
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#include "debug.h"
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s16 Calibrattion_Val = 0;
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/*********************************************************************
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* @fn ADC_Function_Init
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*
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* @brief Initializes ADC collection.
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*
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* @return none
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*/
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void ADC_Function_Init(void)
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{
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ADC_InitTypeDef ADC_InitStructure = {0};
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GPIO_InitTypeDef GPIO_InitStructure = {0};
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
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RCC_ADCCLKConfig(RCC_PCLK2_Div8);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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ADC_DeInit(ADC1);
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ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
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ADC_InitStructure.ADC_ScanConvMode = DISABLE;
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ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
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ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigInjecConv_T1_CC4;
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ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
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ADC_InitStructure.ADC_NbrOfChannel = 1;
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ADC_Init(ADC1, &ADC_InitStructure);
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ADC_InjectedSequencerLengthConfig(ADC1, 3);
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ADC_InjectedChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_239Cycles5);
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ADC_InjectedChannelConfig(ADC1, ADC_Channel_3, 2, ADC_SampleTime_239Cycles5);
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ADC_InjectedChannelConfig(ADC1, ADC_Channel_4, 3, ADC_SampleTime_239Cycles5);
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ADC_DiscModeChannelCountConfig(ADC1, 1);
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ADC_InjectedDiscModeCmd(ADC1, ENABLE);
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ADC_ExternalTrigInjectedConvCmd(ADC1, ENABLE);
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ADC_Cmd(ADC1, ENABLE);
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ADC_BufferCmd(ADC1, DISABLE); //disable buffer
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ADC_ResetCalibration(ADC1);
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while(ADC_GetResetCalibrationStatus(ADC1));
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ADC_StartCalibration(ADC1);
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while(ADC_GetCalibrationStatus(ADC1));
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Calibrattion_Val = Get_CalibrationValue(ADC1);
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}
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/*********************************************************************
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* @fn TIM1_PWM_In
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*
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* @brief Initializes TIM1 PWM output.
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*
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* @param arr - the period value.
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* psc - the prescaler value.
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* ccp - the pulse value.
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*
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* @return none
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*/
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void TIM1_PWM_In(u16 arr, u16 psc, u16 ccp)
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{
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GPIO_InitTypeDef GPIO_InitStructure = {0};
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TIM_OCInitTypeDef TIM_OCInitStructure = {0};
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TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure = {0};
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_TIM1, ENABLE);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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TIM_TimeBaseInitStructure.TIM_Period = arr;
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TIM_TimeBaseInitStructure.TIM_Prescaler = psc;
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TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
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TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
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TIM_TimeBaseInit(TIM1, &TIM_TimeBaseInitStructure);
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TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
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TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
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TIM_OCInitStructure.TIM_Pulse = ccp;
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TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
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TIM_OC4Init(TIM1, &TIM_OCInitStructure);
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TIM_CtrlPWMOutputs(TIM1, ENABLE);
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TIM_OC4PreloadConfig(TIM1, TIM_OCPreload_Disable);
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TIM_ARRPreloadConfig(TIM1, ENABLE);
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TIM_SelectOutputTrigger(TIM1, TIM_TRGOSource_Update);
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TIM_Cmd(TIM1, ENABLE);
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}
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/*********************************************************************
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* @fn Get_ConversionVal
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*
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* @brief Get Conversion Value.
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*
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* @param val - Sampling value
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*
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* @return val+Calibrattion_Val - Conversion Value.
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*/
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u16 Get_ConversionVal(s16 val)
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{
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if((val + Calibrattion_Val) < 0||val==0)
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return 0;
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if((Calibrattion_Val + val) > 4095||val==4095)
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return 4095;
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return (val + Calibrattion_Val);
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}
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/*********************************************************************
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* @fn main
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*
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* @brief Main program.
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*
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* @return none
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*/
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int main(void)
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{
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SystemCoreClockUpdate();
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USART_Printf_Init(115200);
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printf("SystemClk:%d\r\n", SystemCoreClock);
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printf( "ChipID:%08x\r\n", DBGMCU_GetCHIPID() );
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ADC_Function_Init();
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printf("CalibrattionValue:%d\n", Calibrattion_Val);
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TIM1_PWM_In(1000, 48000 - 1, 500);
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while(1)
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{
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while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC));
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ADC_ClearFlag(ADC1, ADC_FLAG_EOC);
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while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_JEOC));
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ADC_ClearFlag(ADC1, ADC_FLAG_JEOC);
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printf("ADC Discontinuous injected group conversion...\r\n");
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printf("%04d\r\n", Get_ConversionVal(ADC1->IDATAR1));
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printf("%04d\r\n", Get_ConversionVal(ADC1->IDATAR2));
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printf("%04d\r\n", Get_ConversionVal(ADC1->IDATAR3));
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}
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}
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