我在使用STM32F767开发板,学习《35.UART接收-串口接收测试小实验》视频教程中遇到两个编译问题
1...OBJTemplate.axf: Error: L6200E: Symbol HAL_UART_RxCpltCallback multiply defined (by usart.o and main.o);
2...OBJTemplate.axf: Error: L6200E: Symbol USART1_IRQHandler multiply defined (by usart.o and main.o)。
我是按照楼主的教程代码编写,他用STM32F429编译的没有问题,我使用STM32F767编译出现以上两处错误。经过仔细核对没有解决,以下是我的代码,请高手帮忙指导指导。
#include "sys.h"
#include "delay.h"
#include "usart.h"
u8 rdata[1];
UART_HandleTypeDef usart1_handler;
void uart1_init()
{
usart1_handler.Instance = USART1;
usart1_handler.Init.BaudRate = 115200;
usart1_handler.Init.WordLength = UART_WORDLENGTH_8B;
usart1_handler.Init.StopBits = UART_STOPBITS_1;
usart1_handler.Init.HwFlowCtl = UART_HWCONTROL_NONE;
usart1_handler.Init.Mode = UART_MODE_TX_RX;
usart1_handler.Init.Parity = UART_PARITY_NONE;
HAL_UART_Init(&usart1_handler);
}
void HAL_UART_MspInit(UART_HandleTypeDef *huart)
{
GPIO_InitTypeDef GPIO_Initure;
if(huart->Instance == USART1)
{
__HAL_RCC_GPIOA_CLK_ENABLE(); //ʹÄÜGPIOAʱÖÓ
__HAL_RCC_USART1_CLK_ENABLE(); //ʹÄÜUSART1ʱÖÓ
GPIO_Initure.Pin = GPIO_PIN_9;
GPIO_Initure.Mode = GPIO_MODE_AF_PP;
GPIO_Initure.Pull = GPIO_PULLUP;
GPIO_Initure.Speed = GPIO_SPEED_HIGH;
GPIO_Initure.Alternate = GPIO_AF7_USART1;
HAL_GPIO_Init(GPIOA,&GPIO_Initure);
GPIO_Initure.Pin = GPIO_PIN_10;
HAL_GPIO_Init(GPIOA,&GPIO_Initure);
HAL_NVIC_SetPriority(USART1_IRQn,3,3);
HAL_NVIC_EnableIRQ(USART1_IRQn);
}
}
void USART1_IRQHandler(void)
{
HAL_UART_IRQHandler(&usart1_handler);
HAL_UART_Receive_IT(&usart1_handler,rdata,sizeof(rdata));
}
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
u8 rec;
if(huart->Instance == USART1)
{
rec = *( (huart->pRxBuffPtr)-1 );
//rec = rdata[0];
HAL_UART_Transmit(&usart1_handler,&rec,1,1000);
}
}
int main(void)
{
//u8 buff[] = "test&My name is yaojun";
Cache_Enable(); //´ò¿ªL1-Cache
HAL_Init(); //³õʼ»¯HAL¿â
Stm32_Clock_Init(432,25,2,9); //ÉèÖÃʱÖÓ,216Mhz
delay_init(216);
uart1_init();
HAL_UART_Receive_IT(&usart1_handler,rdata,sizeof(rdata));
while(1)
{
// HAL_UART_Transmit(&usart1_handler,buff,sizeof(buff),1000);
// delay_ms(500);
}
}
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