帮我先写一个STM32F103单片机的helloworld程序
时间: 2023-06-03 11:07:43 浏览: 79
好的,以下是STM32F103单片机的helloworld程序:
```c
#include "stm32f10x.h"
int main(void)
{
RCC->APB2ENR |= RCC_APB2ENR_IOPCEN; // enable peripheral clock for GPIOC
GPIOC->CRH = 0x00300000; // configure PC13 as push-pull output with max speed
GPIOC->ODR |= GPIO_ODR_ODR13; // set PC13 high (LED off)
while(1)
{
GPIOC->ODR ^= GPIO_ODR_ODR13; // toggle PC13 (LED on/off)
for (volatile int i = 0; i < 500000; i++); // delay
}
}
```
这是一个简单的LED闪烁程序,每隔一段时间将PC13引脚的电平翻转,从而实现LED的闪烁效果。
相关问题
写一段从stm32f103单片机发送hello world到cp2102接受的代码
以下为代码示例,仅供参考:
```
#include "stm32f10x.h"
#include "stm32f10x_gpio.h"
#include "stm32f10x_rcc.h"
#include "misc.h"
#define USART_RX GPIO_Pin_10
#define USART_TX GPIO_Pin_9
void USART1_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = USART_RX;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = USART_TX;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_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_Rx | USART_Mode_Tx;
USART_Init(USART1, &USART_InitStructure);
USART_Cmd(USART1, ENABLE);
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
}
void USART1_SendChar(char ch)
{
while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
USART_SendData(USART1, (uint16_t)ch);
}
void USART1_SendString(char* str)
{
while (*str)
{
USART1_SendChar(*str++);
}
}
int main(void)
{
USART1_Init();
USART1_SendString("Hello world!");
while (1)
{
}
}
void USART1_IRQHandler(void)
{
if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
{
USART_ReceiveData(USART1);
}
}
```
stm32F103zet6单片机,串口通信的程序
以下是基于STM32F103ZET6单片机的串口通信程序示例:
```
#include "stm32f10x.h"
void USART1_Init(void);
void USART1_SendChar(char c);
void USART1_SendString(char* s);
int main(void)
{
USART1_Init();
USART1_SendString("Hello, world!\n");
while(1)
{
// 程序主循环
}
}
void USART1_Init(void)
{
// 使能USART1时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
// 配置USART1的GPIO引脚
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// 配置USART1的参数
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_Mode_Rx;
USART_Init(USART1, &USART_InitStructure);
// 使能USART1
USART_Cmd(USART1, ENABLE);
}
void USART1_SendChar(char c)
{
// 等待USART1准备好发送数据
while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
// 发送数据
USART_SendData(USART1, c);
}
void USART1_SendString(char* s)
{
// 循环发送字符串中的每个字符
while(*s)
{
USART1_SendChar(*s++);
}
}
```
该程序通过USART1串口发送“Hello, world!”字符串,可以在串口调试助手上查看输出结果。注意在程序中配置正确的波特率,并且在使用串口之前先使能USART1的时钟。
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