void hal_uart_blocking_tx(int port, uint8_t byte)
{
struct hal_uart *u;
if (port >= FSL_FEATURE_SOC_UART_COUNT) {
return;
}
u = &uarts[port];
if (!u->u_configured || !u->u_open) {
return;
}
UART_WriteBlocking(u->u_base, &byte, 1);
}
/*!
* @brief Main function
*/
int main(void)
{
uart_config_t config;
BOARD_InitPins();
BOARD_BootClockRUN();
/*
* config.baudRate_Bps = 115200U;
* config.parityMode = kUART_ParityDisabled;
* config.stopBitCount = kUART_OneStopBit;
* config.txFifoWatermark = 0;
* config.rxFifoWatermark = 1;
* config.enableTx = false;
* config.enableRx = false;
*/
UART_GetDefaultConfig(&config);
config.baudRate_Bps = BOARD_DEBUG_UART_BAUDRATE;
config.enableTx = true;
config.enableRx = true;
UART_Init(DEMO_UART, &config, CLOCK_GetFreq(DEMO_UART_CLKSRC));
/* Send g_tipString out. */
UART_WriteBlocking(DEMO_UART, g_tipString, sizeof(g_tipString) / sizeof(g_tipString[0]));
/* Enable RX interrupt. */
UART_EnableInterrupts(DEMO_UART, kUART_RxDataRegFullInterruptEnable | kUART_RxOverrunInterruptEnable);
EnableIRQ(DEMO_UART_IRQn);
while (1)
{
/* Send data only when UART TX register is empty and ring buffer has data to send out. */
while ((kUART_TxDataRegEmptyFlag & UART_GetStatusFlags(DEMO_UART)) && (rxIndex != txIndex))
{
UART_WriteByte(DEMO_UART, demoRingBuffer[txIndex]);
txIndex++;
txIndex %= DEMO_RING_BUFFER_SIZE;
}
}
}
