STM32多路ADC+DMA+串口发送程序.docx

主函数#include stm32f10x.h#include #include ADC.h#include DMA.h#include UASRT.hu16 *dyz;/建立指针u16 sum16;/printf重定向函数/int fputc(int ch, FILE*f)USART_SendData(USART1, (uint8_t) ch);while (USART_GetFlagStatus(USART1, USART_FLAG_TC) = RESET);return (ch);/延时函数/void delay_ms(u16 time) u16 i=0; while(time-) i=12000; /? while(i-) ; /主函数/int main(void)int i,m,n;SystemInit();adc_ini();USART_int();ADC_SoftwareStartConvCmd(ADC1, ENABLE);/ADC1软启动使能dma();while(1)/求10次采集的平均值 for(m=0;m10;m+)dyz=ADC_ConvertedValue;/给指针赋值while(!DMA_GetFlagStatus(DMA1_FLAG_TC1);/等待DAM传输完毕for(i=0;i16;i+)sumi+=*dyz; dyz+;DMA_ClearFlag(DMA1_FLAG_TC1);/清楚DMA发送完成标志位for(n=0;nDR);/定义内存基地址DMA_InitStructure.DMA_MemoryBaseAddr = (u32)ADC_ConvertedValue;/设置外设作为传输的源DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;/指定DMA缓存大小DMA_InitStructure.DMA_BufferSize = 16;/设置外设寄存器地址不递增?DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;/设置内存寄存器地址递增DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;/设置外设数据宽度为16位DMA_InitStructure.DMA_PeripheralDataSize =DMA_PeripheralDataSize_HalfWord;/设置内存数据的宽度为16位DMA_InitStructure.DMA_MemoryDataSize =DMA_MemoryDataSize_HalfWord;/设置DMA工作在循环模式DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;/设置通道为最高优先级DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh ;/设置通道为外设到内存DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;DMA_Init(DMA1_Channel1, &DMA_InitStructure);/使能DMA通道1DMA_Cmd(DMA1_Channel1, ENABLE);#endif串口.H文件#ifndef _USART_H_#define _USART_H_void USART_int(void) USART_InitTypeDef USART_InitStructure;GPIO_InitTypeDef GPIO_InitStructure;RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1 ,ENABLE);/使能GPIOA和USART1时钟USART_DeInit(USART1);/填入缺省值给USART1USART_InitStructure.USART_BaudRate = 9600;/波特率为9600 USART_InitStructure.USART_WordLength = USART_WordLength_8b;/数据位为8位USART_InitStructure.USART_StopBits = USART_StopBits_1;/1位停止位USART_InitStructure.USART_Parity = USART_Parity_No;/无奇偶校验USART_InitStructure.USART_HardwareFlowControl=USART_HardwareFlowControl_None;/无控制流USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;/接收和发送模式USART_Init(USART1, &USART_InitStructure);/载入设置值GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;/ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;/ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;/GPIO