Posted on June 28, 2017 at 13:15Hi, I am trying to get data from IrDA SIR mode.
I setup that USART Port 2 is sending IrDA packet and USART Port 1 is receiving ( it similar to loop-back, wired USART2 TX and USART RX )
I can see the irda wave form on USART Port 2 TX Line, but I can't receive any data on USART Port 1.
I hope get any clue what am I missing
Thanks in advance.
Here is our code
IRDA_HandleTypeDef hirda_1;
IRDA_HandleTypeDef hirda_2;
void HAL_IRDA_MspInit(IRDA_HandleTypeDef *hirda)
{
GPIO_InitTypeDef GPIO_InitStruct;
if(hirda->Instance==USART1)
{
__HAL_RCC_USART1_CLK_ENABLE();
GPIO_InitStruct.Pin = GPIO_PIN_9|GPIO_PIN_10;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF1_USART1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}
if(hirda->Instance==USART2)
{
__HAL_RCC_USART2_CLK_ENABLE();
GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_3;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF1_USART2;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}
}
void init_irda(int port )
{
if ( port == COM_SIR ) {
hirda_1.Instance = USART1;
hirda_1.Init.BaudRate = 115200;
hirda_1.Init.PowerMode = IRDA_POWERMODE_NORMAL;
hirda_1.Init.Parity = IRDA_PARITY_NONE;
hirda_1.Init.Prescaler = 1;
hirda_1.Init.Mode = IRDA_MODE_TX_RX;
hirda_1.Init.WordLength = IRDA_WORDLENGTH_8B;
if ( HAL_IRDA_Init(&hirda_1) != HAL_OK ) {
Printf('HAL IRDA INIT ERROR ---------\r\n');
}
} else if ( port == COM_BT ) {
hirda_2.Instance = USART2;
hirda_2.Init.BaudRate = 115200;
hirda_2.Init.PowerMode = IRDA_POWERMODE_NORMAL;
hirda_2.Init.Parity = IRDA_PARITY_NONE;
hirda_2.Init.Prescaler = 1;
hirda_2.Init.Mode = IRDA_MODE_TX_RX;
hirda_2.Init.WordLength = IRDA_WORDLENGTH_8B;
if ( HAL_IRDA_Init(&hirda_2) != HAL_OK ) {
Printf('HAL IRDA INIT ERROR ---------\r\n');
}
}
}
void irda_test()
{
uint8_t Cmd[] = {0x80};
uint8_t ret[10];
while(1) {
int retval;
memset(ret,0x0,5);
Printf('Data Transmit\r\n');
HAL_IRDA_Transmit(&hirda_2,(uint8_t *) Cmd,1,0xFFFF);
retval = HAL_IRDA_Receive(&hirda_1,ret,1,1000);
if ( retval != HAL_OK ) {
Printf('HAL RECEIVE ERROR : %08x\r\n',retval);
} else {
Printf('Data Received : %02x\r\n',ret[0]);
}
JOSTimeDly(100);
}
}
at Main.c
{
<...>
init_irda(COM_SIR);
init_irda(COM_BT);
irda_test();
}
