使用 STM32F103C8T6 的 ADC 模块读取7路电压值,并通过串口发送的示例工程代码
时间: 2024-03-15 09:45:40 浏览: 27
以下是使用STM32F103C8T6的ADC模块读取7路电压值,并通过串口发送的示例工程代码。在这个示例中,我们使用了PA0~PA6七个引脚作为ADC的输入,使用USART1作为串口输出。
```c
#include "stm32f10x.h"
#include <stdio.h>
#define ADC1_DR_Address ((u32)0x4001244C)
void RCC_Configuration(void);
void GPIO_Configuration(void);
void USART_Configuration(void);
void ADC_Configuration(void);
void NVIC_Configuration(void);
void USART1_SendByte(u8 ch);
void USART1_SendString(u8* str);
void Delay_us(u32 nCount);
int main(void)
{
RCC_Configuration();
GPIO_Configuration();
USART_Configuration();
ADC_Configuration();
NVIC_Configuration();
while(1)
{
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC));
u16 value[7];
value[0] = ADC_GetConversionValue(ADC1);
value[1] = ADC_GetConversionValue(ADC1);
value[2] = ADC_GetConversionValue(ADC1);
value[3] = ADC_GetConversionValue(ADC1);
value[4] = ADC_GetConversionValue(ADC1);
value[5] = ADC_GetConversionValue(ADC1);
value[6] = ADC_GetConversionValue(ADC1);
char buffer[128];
sprintf(buffer, "ADC Value: %d %d %d %d %d %d %d\r\n", value[0], value[1], value[2], value[3], value[4], value[5], value[6]);
USART1_SendString(buffer);
Delay_us(500000);
}
}
void RCC_Configuration(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_ADC1 | RCC_APB2Periph_USART1, ENABLE);
}
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
void USART_Configuration(void)
{
USART_InitTypeDef USART_InitStructure;
USART_InitStructure.USART_BaudRate = 115200;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Tx;
USART_Init(USART1, &USART_InitStructure);
USART_Cmd(USART1, ENABLE);
}
void ADC_Configuration(void)
{
ADC_InitTypeDef ADC_InitStructure;
RCC_ADCCLKConfig(RCC_PCLK2_Div6);
ADC_DeInit(ADC1);
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 7;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_Cmd(ADC1, ENABLE);
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_239Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 2, ADC_SampleTime_239Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 3, ADC_SampleTime_239Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 4, ADC_SampleTime_239Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 5, ADC_SampleTime_239Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_5, 6, ADC_SampleTime_239Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_6, 7, ADC_SampleTime_239Cycles5);
}
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void USART1_SendByte(u8 ch)
{
while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
USART_SendData(USART1, (uint8_t) ch);
}
void USART1_SendString(u8* str)
{
while(*str)
{
USART1_SendByte(*str++);
}
}
void Delay_us(u32 nCount)
{
u32 i;
for(i=0;i<nCount;i++);
}
```
在上面的代码中,我们首先需要进行一些初始化工作,包括时钟配置、GPIO配置、USART配置、ADC配置和NVIC配置。然后,在主循环中,我们使用ADC_SoftwareStartConvCmd函数开始一次模拟转换,并等待转换完成后,读取7个通道的数据,并通过USART1串口发送出去。
需要注意的是,在发送数据时,我们使用了sprintf函数将数据格式化成字符串,然后使用USART1_SendString函数发送出去。在发送之前,我们还需要进行一定的延时,以防止数据发送过快。
在使用此代码时,请确保正确连接ADC的输入引脚,并正确设置串口的波特率。