stm32学习之九
主要是adc.h和adc.c文件的编写(实验的时候写成了add.h和add.c)
调试一上午,出现一个不知道怎么搞的,时钟调错了,RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_ADC1,ENABLE);
调成了APB1,因此只能出现0v等。为戒为戒!!!
add.h代码如下:
#ifndef _ADD_H
#define _ADD_H
#include "stm32f10x.h"
void ADC_Configure();
#endif
add.c代码如下:
#include "add.h"
#define ADC1_DR_Address ((u32)0x40012400 + 0x4C)
__IO uint16_t ADC_ConvertedValue;
static void ADC_GPIO_Config()
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1 ,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_ADC1,ENABLE);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
GPIO_Init(GPIOC,&GPIO_InitStructure);
}
static void ADC_DMA_Config()
{
ADC_InitTypeDef ADC_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
DMA_DeInit(DMA1_Channel1);
DMA_InitStructure.DMA_BufferSize = 1;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)&ADC_ConvertedValue;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryInc= DMA_MemoryInc_Disable;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_PeripheralInc= DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_Init(DMA1_Channel1,&DMA_InitStructure);
DMA_Cmd(DMA1_Channel1, ENABLE);
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_NbrOfChannel = 1;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_Init(ADC1,&ADC_InitStructure);
ADC_RegularChannelConfig(ADC1,ADC_Channel_11,1,ADC_SampleTime_55Cycles5);
ADC_DMACmd(ADC1,ENABLE);
ADC_Cmd(ADC1,ENABLE);
ADC_ResetCalibration(ADC1);
while(ADC_GetResetCalibrationStatus(ADC1));
ADC_StartCalibration(ADC1);
while(ADC_GetCalibrationStatus(ADC1));
ADC_SoftwareStartConvCmd(ADC1,ENABLE);
}
void ADC_Configure()
{
ADC_GPIO_Config();
ADC_DMA_Config();
}
usart.h代码如下:
#ifndef _USART_H
#define _USAET_H
#include
void Usart_GPIO_Config(void);
int fputc(int ch,FILE *f);
#endif
usart.c代码如下:
#include "usart.h"
#include "stm32f10x.h"
void Usart_GPIO_Config()
{
USART_InitTypeDef USART_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin= GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA,&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Pin= GPIO_Pin_10;
GPIO_Init(GPIOA,&GPIO_InitStructure); //注意的是,这个必须得加上,原因不清
USART_InitStructure.USART_BaudRate = 115200;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Tx|USART_Mode_Rx;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_Init(USART1,&USART_InitStructure);
USART_Cmd(USART1,ENABLE);
}
int fputc(int ch,FILE *f)
{
USART_SendData(USART1,(unsigned char)ch);
while(!(USART1->SR & USART_FLAG_TXE));
return ch;
}
main.c代码如下:
/******************** (C) COPYRIGHT 2013 **************************
* 文件名 :main.c
* 描述 :用3.5.0版本建的工程模板。
* 实验平台:野火
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