stm32h747 GETCHAR_PROTOTYPE strangeness Hi Guys,This is driving me mad!So this works perfectly echoing characters via uart8: int ch = 'A';
while (1)
{
HAL_UART_Transmit(&huart8, (uint8_t *)&ch, 1, 0xFFFF);
HAL_UART_Receive(&huart8, (uint8_t *)&ch, 1, 0xFFFF);
} Now if I have getchar and put char implementations: #define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#define GETCHAR_PROTOTYPE int __io_getchar(void)
PUTCHAR_PROTOTYPE
{
HAL_UART_Transmit(&huart8, (uint8_t *)&ch, 1, 0xFFFF);
return ch;
}
GETCHAR_PROTOTYPE
{
uint8_t ch;
__HAL_UART_CLEAR_OREFLAG(&huart8);
HAL_UART_Receive(&huart8, &ch, 1, 0xFFFF);
return ch;
} The following does not work, we do not get anything received and get stuck in UART_WaitOnFlagUntilTimeout() called from HAL_UART_Receive() from __io_getchar(): while (1)
{
HAL_UART_Transmit(&huart8, (uint8_t *)&ch, 1, 0xFFFF);
ch = getchar();
} However if I directly call __io_getchar() everyth
