ADC1库函数版本测试失败！

huabit · 发表于 2015-1-11 22:46:50

ADC1库函数版本，用的原子哥的板子，ADC 1 channel1转换结果一直是0，或者根本没有转换，附上程序，求指教。

[mw_shl_code=c,true]#include "stm32f10x.h" #include "delay.h" #include "sys.h" #include "uart.h" #include "led.h" #include "lcd.h" #include "RCC.h" #define KEY0 PAin(13) //PA13 #define KEY1 PAin(15) //PA15 #define KEY2 PAin(0) //PA0 WK_UP #define ADC1_DR_Address ((u32)0x4001244C) volatile u16 ADCConvertedValue; // AD convert value // void ADC1_Init(void) { GPIO_InitTypeDef GPIO_InitStructure; ADC_InitTypeDef ADC_InitStructure; // ????IO?? GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1; GPIO_Init(GPIOA,&GPIO_InitStructure); // ????GPIO?±?? RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE); // ????ADC?±?? RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1,ENABLE); RCC_ADCCLKConfig(RCC_PCLK2_Div8); // ????ADC ADC_DeInit(ADC1); ADC_InitStructure.ADC_Mode = ADC_Mode_Independent; ADC_InitStructure.ADC_ScanConvMode = DISABLE; ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; ADC_InitStructure.ADC_NbrOfChannel = 1; ADC_Init(ADC1,&ADC_InitStructure); ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_55Cycles5); /* Enable ADC1 DMA */ ADC_DMACmd(ADC1, ENABLE); /* Enable ADC1 */ ADC_Cmd(ADC1, ENABLE); ADC_ResetCalibration(ADC1); /* Check the end of ADC1 reset calibration register */ while(ADC_GetResetCalibrationStatus(ADC1)); /* Start ADC1 calibration */ ADC_StartCalibration(ADC1); /* Check the end of ADC1 calibration */ while(ADC_GetCalibrationStatus(ADC1)); ADC_SoftwareStartConvCmd(ADC1,ENABLE); } // void DMA_ADC1_Init(void) { DMA_InitTypeDef DMA_InitStructure; DMA_DeInit(DMA1_Channel1); DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address; DMA_InitStructure.DMA_MemoryBaseAddr = (u32) &ADCConvertedValue; DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; DMA_InitStructure.DMA_BufferSize = 1; DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable; DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord; DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord; DMA_InitStructure.DMA_Mode = DMA_Mode_Circular; DMA_InitStructure.DMA_Priority = DMA_Priority_High; DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; DMA_Init(DMA1_Channel1, &DMA_InitStructure); /* Enable DMA1 channel1 */ DMA_Cmd(DMA1_Channel1, ENABLE); } // int main(void) { RCC_Init(); delay_init(72); //???±?????? Usart1_Init(9600); LED_Init(); LCD_Init(); LCD_ShowString(0,16,"This is a demo that shows the Peripherals!"); LCD_ShowString(0,48,"AD Value:"); DMA_ADC1_Init(); ADC1_Init(); while (1) { LED0 = 1; LED1 = 0; delay_ms(100); LCD_ShowNum(72,48,ADCConvertedValue,4,16); LED0 = 0; LED1 = 1; delay_ms(100); LCD_ShowNum(72,48,ADCConvertedValue,4,16); } } [/mw_shl_code]

屏幕显示：AD Value：0