HI ?
i work with STM32F103CB ,The problem is the STM does not toggle the RTS. RTS still tied high i can't find the problem can someone help me please.
we found here my code.
void USART_GPIO_Init(void)
{
// Configuration of GPIOA clock source
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
RCC-> APB2RSTR =0;
GPIO_PinRemapConfig(GPIO_Remap_USART1 , DISABLE) ;
/* Enable the USART periph */
RCC_APB2PeriphClockCmd( RCC_APB2Periph_USART1, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_12 ;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;//GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
void FTDI_Init(void)
{
USART_InitTypeDef USART_InitStructure;
RCC_APB2PeriphClockCmd( RCC_APB2Periph_USART1, ENABLE);
USART_InitStructure.USART_BaudRate = 9600;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No ;
USART_InitStructure.USART_Mode = USART_Mode_Tx|USART_Mode_Rx;
USART_InitStructure.USART_HardwareFlowControl =USART_HardwareFlowControl_RTS_CTS;
USART_Init( USART1, &USART_InitStructure);
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 5;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_ITConfig(USART1, USART_IT_RXNE,ENABLE);
__enable_irq();
USART_Cmd(USART1, ENABLE);
}
Interruption code :
void USART1_IRQHandler(void)
{
if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
{
for(Ri=0 ; Ri<5 ; Ri++)
{
DATA_receive = USART_ReceiveData(USART1);
buffer[Ri] = DATA_receive;
}
}
}
