bool uart_sps_flow_off(void)
{
bool flow_off = true;
do
{
// First check if no transmission is ongoing
if ((uart_temt_getf() == 0) || (uart_thre_getf() == 0) || !uart_sps_is_rx_fifo_empty())
{
flow_off = false;
break;
}
// Configure modem (HW flow control disable, 'RTS flow off')
SetWord32(UART_MCR_REG, GetWord32(UART_MCR_REG) & (~UART_RTS));
//SetWord32(UART_MCR_REG, 0);
// Wait for 1 character duration to ensure host has not started a transmission at the
// same time
for (int i=0;i<UART_WAIT_BYTE_COUNTER;i++);
// Check if data has been received during wait time
if(!uart_sps_is_rx_fifo_empty())
{
// Re-enable UART flow
uart_sps_flow_on();
// We failed stopping the flow
flow_off = false;
}
} while(false);
return (flow_off);
}
bool uart_sps_flow_off(void)
{
bool flow_off = true;
do
{
// First check if no transmission is ongoing
if ((uart_temt_getf() == 0) || (uart_thre_getf() == 0))
{
flow_off = false;
break;
}
// Configure modem (HW flow control disable, 'RTS flow off')
// Wait for 1 character duration to ensure host has not started a transmission at the
// same time
#ifndef __GNUC__
// timer_wait(UART_CHAR_DURATION);
#endif //__GNUC__
// Check if data has been received during wait time
if(!uart_sps_is_rx_fifo_empty())
{
// Re-enable UART flow
uart_sps_flow_on();
// We failed stopping the flow
flow_off = false;
}
} while(false);
return (flow_off);
}