Solved
two USART configuration failed (USART3 problem)
Posted on March 01, 2017 at 15:27
Hi,
Here is my code for configuring two different usart but my USART3 doesn't work properly and USART2 works fine.(I remap both of them). what is my mistake that I didn't pay attention?
Problem: I don't have any signal on USART3_TX pin when I send a char. however my USART1 works fine(send and receive)
USART_InitTypeDef USARTConfiguration;
GPIO_InitTypeDef GPIOS; RCC_APB2PeriphClockCmd(RCC_APB1Periph_USART2|RCC_APB1Periph_USART3|RCC_APB2Periph_GPIOD |RCC_APB2Periph_GPIOC |RCC_APB2Periph_AFIO,ENABLE); GPIO_PinRemapConfig(GPIO_Remap_USART2|GPIO_PartialRemap_USART3,ENABLE); GPIOS.GPIO_Mode=GPIO_Mode_AF_PP ; GPIOS.GPIO_Speed=GPIO_Speed_50MHz; GPIOS.GPIO_Pin=GPIO_Pin_5; GPIO_Init(GPIOD,&GPIOS); GPIOS.GPIO_Mode=GPIO_Mode_IN_FLOATING ; GPIOS.GPIO_Pin=GPIO_Pin_6; GPIO_Init(GPIOD,&GPIOS); USARTConfiguration.USART_BaudRate=9600; USARTConfiguration.USART_StopBits=USART_StopBits_1; USARTConfiguration.USART_WordLength=USART_WordLength_8b; USARTConfiguration.USART_Parity=USART_Parity_No ; USARTConfiguration.USART_HardwareFlowControl=USART_HardwareFlowControl_None; USARTConfiguration.USART_Mode=USART_Mode_Rx | USART_Mode_Tx; USART_Init(USART2,&USARTConfiguration); USART_ITConfig(USART2,USART_IT_RXNE,ENABLE); NVIC_EnableIRQ(USART2_IRQn); USART_Cmd(USART2,ENABLE); GPIOS.GPIO_Mode=GPIO_Mode_AF_PP ; GPIOS.GPIO_Speed=GPIO_Speed_50MHz; GPIOS.GPIO_Pin=GPIO_Pin_10; GPIO_Init(GPIOC,&GPIOS); GPIOS.GPIO_Mode=GPIO_Mode_IN_FLOATING ; GPIOS.GPIO_Pin=GPIO_Pin_11; GPIO_Init(GPIOC,&GPIOS); USARTConfiguration.USART_BaudRate=9600; USARTConfiguration.USART_StopBits=USART_StopBits_1; USARTConfiguration.USART_WordLength=USART_WordLength_8b; USARTConfiguration.USART_Parity=USART_Parity_No ; USARTConfiguration.USART_HardwareFlowControl=USART_HardwareFlowControl_None; USARTConfiguration.USART_Mode=USART_Mode_Rx | USART_Mode_Tx; USART_Init(USART3,&USARTConfiguration); USART_Cmd(USART3,ENABLE);Thanks in advance.
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