/** @brief Write a string to a user-visible output location.
Write a null-terminated string to the serial port, console, terminal, or
other display device, such that the text is visible to the user.
@param pszString A null-terminated string.
*/
void RedOsOutputString(
const char *pszString)
{
if(pszString == NULL)
{
REDERROR();
}
else
{
/* The arm-atollic-eabi version of putchar has been observed not to
end up calling __io_putchar() (as would have been expected), so
we call it directly instead.
*/
uint32_t ulIdx = 0U;
while(pszString[ulIdx] != '\0')
{
__io_putchar(pszString[ulIdx]);
/* Serial output often requires a \r to print newlines correctly.
*/
if(pszString[ulIdx] == '\n')
{
__io_putchar('\r');
}
ulIdx++;
}
}
}
void USART3_IRQHandler(void)
{
ot_u8 rxchar;
if (USART_GetITStatus(USART3, USART_IT_RXNE) != RESET) {
/* Read one byte from the receive data register */
rxchar = USART_ReceiveData(USART3);
if (rxchar == '\r') {
uart_rx_buf[uart_rx_buf_idx++] = 0; // null terminate
new_uart_rx = 1;
} else if (rxchar == 8) {
if (uart_rx_buf_idx > 0) {
__io_putchar(8);
__io_putchar(' ');
__io_putchar(8);
uart_rx_buf_idx--;
#ifndef BLOCKING_UART_TX
if (dma_running == 0)
kick_dma_usart_tx(2);
#endif
}
} else if (uart_rx_buf_idx < UART_RX_BUF_SIZE) {
uart_rx_buf[uart_rx_buf_idx++] = rxchar;
__io_putchar(rxchar);
#ifndef BLOCKING_UART_TX
if ( (dma_running == 0) && (rxchar != '\n') )
kick_dma_usart_tx(2);
#endif
}
}
if (USART_GetITStatus(USART3, USART_IT_TXE) != RESET) {
USART_ClearFlag(USART3, USART_FLAG_TXE);
USART_ITConfig(USART3, USART_IT_TXE, DISABLE);
#ifndef BLOCKING_UART_TX
usart_tx_dmafifo_out_idx += UTX_DMA_Init.DMA_BufferSize;
if (usart_tx_dmafifo_out_idx == TX_DMA_FIFO_SIZE)
usart_tx_dmafifo_out_idx = 0; // this was a "wrap"
if (usart_tx_dmafifo_out_idx == usart_tx_dmafifo_in_idx) {
// no more to send, shut down
dma_running = 0;
DMA_ITConfig(USART3_TX_DMA_CHANNEL, DMA_IT_TC, DISABLE);
DMA_Cmd(USART3_TX_DMA_CHANNEL, DISABLE);
} else {
kick_dma_usart_tx(2);
}
#endif
} // ...if (USART_GetITStatus(USART3, USART_IT_TC) != RESET)
//lr = LR_U3;
}
/*--------------------------------------------------------------------------*/
size_t
_write(int handle, const unsigned char *buffer, size_t size)
{
size_t nChars = 0;
if(handle != _LLIO_STDOUT && handle != _LLIO_STDERR) {
return _LLIO_ERROR;
}
if(buffer == 0) {
/* This means that we should flush internal buffers. */
/* spin until TX complete (TX is idle) */
while((SC1_UARTSTAT & SC_UARTTXIDLE) != SC_UARTTXIDLE) {
}
return 0;
}
/* ensure port is configured for UART */
if(SC1_MODE != SC1_MODE_UART) {
return _LLIO_ERROR;
}
while(size--) {
__io_putchar(*buffer++);
++nChars;
}
return nChars;
}
int _write(int file, char* ptr, int len) {
int DataIdx;
for (DataIdx = 0; DataIdx < len; DataIdx++) {
__io_putchar( *ptr++ );
}
return len;
}
int _write(int f, char*pointer, int length)
{
int i = 0;
while (i < length) {
__io_putchar(*(pointer + i));
i++;
}
return length;
}
int _write(int file, char *ptr, int len)
{
int i;
for (i = 0; i < len; i++)
{
__io_putchar( *ptr++ );
}
return len;
}
int _write(int file, char *ptr, int len)
{
int todo;
for (todo = 0; todo < len; todo++)
{
__io_putchar( *ptr++ );
}
/* Implement your write code here, this is used by puts and printf for example */
return len;
}
int fputc(int ch, FILE *fp)
{
return __io_putchar(ch);
}
int putchar (int c)
{
__io_putchar((char) c);
return c;
}