static int mcux_lpuart_init(struct device *dev)
{
const struct mcux_lpuart_config *config = dev->config->config_info;
lpuart_config_t uart_config;
struct device *clock_dev;
u32_t clock_freq;
clock_dev = device_get_binding(config->clock_name);
if (clock_dev == NULL) {
return -EINVAL;
}
if (clock_control_get_rate(clock_dev, config->clock_subsys,
&clock_freq)) {
return -EINVAL;
}
LPUART_GetDefaultConfig(&uart_config);
uart_config.enableTx = true;
uart_config.enableRx = true;
uart_config.baudRate_Bps = config->baud_rate;
LPUART_Init(config->base, &uart_config, clock_freq);
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
config->irq_config_func(dev);
#endif
return 0;
}
void serial_init(serial_t *obj, PinName tx, PinName rx)
{
uint32_t uart_tx = pinmap_peripheral(tx, PinMap_UART_TX);
uint32_t uart_rx = pinmap_peripheral(rx, PinMap_UART_RX);
obj->index = pinmap_merge(uart_tx, uart_rx);
MBED_ASSERT((int)obj->index != NC);
serial_setup_clock();
lpuart_config_t config;
LPUART_GetDefaultConfig(&config);
config.baudRate_Bps = 9600;
config.enableTx = false;
config.enableRx = false;
LPUART_Init(uart_addrs[obj->index], &config, serial_get_clock());
pinmap_pinout(tx, PinMap_UART_TX);
pinmap_pinout(rx, PinMap_UART_RX);
if (tx != NC) {
LPUART_EnableTx(uart_addrs[obj->index], true);
pin_mode(tx, PullDefault);
}
if (rx != NC) {
LPUART_EnableRx(uart_addrs[obj->index], true);
pin_mode(rx, PullDefault);
}
if (obj->index == STDIO_UART) {
stdio_uart_inited = 1;
memcpy(&stdio_uart, obj, sizeof(serial_t));
}
}
/*!
* @brief Main function
*/
int main(void)
{
uint8_t ch;
lpuart_config_t config;
BOARD_InitPins();
BOARD_BootClockRUN();
CLOCK_SetLpuart1Clock(1U);
/*
* config.baudRate_Bps = 115200U;
* config.parityMode = kLPUART_ParityDisabled;
* config.stopBitCount = kLPUART_OneStopBit;
* config.txFifoWatermark = 0;
* config.rxFifoWatermark = 0;
* config.enableTx = false;
* config.enableRx = false;
*/
LPUART_GetDefaultConfig(&config);
config.baudRate_Bps = BOARD_DEBUG_UART_BAUDRATE;
config.enableTx = true;
config.enableRx = true;
LPUART_Init(DEMO_LPUART, &config, CLOCK_GetFreq(DEMO_LPUART_CLKSRC));
LPUART_WriteBlocking(DEMO_LPUART, txbuff, sizeof(txbuff) - 1);
while (1)
{
LPUART_ReadBlocking(DEMO_LPUART, &ch, 1);
LPUART_WriteBlocking(DEMO_LPUART, &ch, 1);
}
}
void initLPUART(void)
{
lpuart_config_t config;
lpuart_transfer_t xfer;
/*
* config.baudRate_Bps = 115200U;
* config.parityMode = kLPUART_ParityDisabled;
* config.stopBitCount = kLPUART_OneStopBit;
* config.txFifoWatermark = 0;
* config.rxFifoWatermark = 0;
* config.enableTx = false;
* config.enableRx = false;
*/
LPUART_GetDefaultConfig(&config);
config.baudRate_Bps = BOARD_DEBUG_UART_BAUDRATE;
config.enableTx = true;
config.enableRx = true;
LPUART_Init(DEMO_LPUART, &config, CLOCK_GetFreq(DEMO_LPUART_CLKSRC));
LPUART_TransferCreateHandle(DEMO_LPUART, &g_lpuartHandle, LPUART_UserCallback, NULL);
/* Send g_tipString out. */
xfer.data = g_tipString;
xfer.dataSize = sizeof(g_tipString) - 1;
txOnGoing = true;
LPUART_TransferSendNonBlocking(DEMO_LPUART, &g_lpuartHandle, &xfer);
/* Wait send finished */
while (txOnGoing)
{
}
/* Start to echo. */
}
static rt_err_t imxrt_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
{
struct imxrt_uart *uart;
lpuart_config_t config;
RT_ASSERT(serial != RT_NULL);
RT_ASSERT(cfg != RT_NULL);
uart = (struct imxrt_uart *)serial->parent.user_data;
imxrt_uart_gpio_init(uart);
LPUART_GetDefaultConfig(&config);
config.baudRate_Bps = cfg->baud_rate;
switch (cfg->data_bits)
{
case DATA_BITS_7:
config.dataBitsCount = kLPUART_SevenDataBits;
break;
default:
config.dataBitsCount = kLPUART_EightDataBits;
break;
}
switch (cfg->stop_bits)
{
case STOP_BITS_2:
config.stopBitCount = kLPUART_TwoStopBit;
break;
default:
config.stopBitCount = kLPUART_OneStopBit;
break;
}
switch (cfg->parity)
{
case PARITY_ODD:
config.parityMode = kLPUART_ParityOdd;
break;
case PARITY_EVEN:
config.parityMode = kLPUART_ParityEven;
break;
default:
config.parityMode = kLPUART_ParityDisabled;
break;
}
config.enableTx = true;
config.enableRx = true;
LPUART_Init(uart->uart_base, &config, GetUartSrcFreq());
LPUART_EnableInterrupts(uart->uart_base, kLPUART_RxDataRegFullInterruptEnable);
return RT_EOK;
}
void modem_init() {
const gpio_pin_config_t OUTTRUE = {kGPIO_DigitalOutput, true};
const gpio_pin_config_t IN = {kGPIO_DigitalInput, false};
// initialize BOARD_CELL pins
CLOCK_EnableClock(BOARD_CELL_UART_PORT_CLOCK);
PORT_SetPinMux(BOARD_CELL_UART_PORT, BOARD_CELL_UART_TX_PIN, BOARD_CELL_UART_TX_ALT);
PORT_SetPinMux(BOARD_CELL_UART_PORT, BOARD_CELL_UART_RX_PIN, BOARD_CELL_UART_RX_ALT);
CLOCK_EnableClock(BOARD_CELL_PIN_PORT_CLOCK);
PORT_SetPinMux(BOARD_CELL_PIN_PORT, BOARD_CELL_STATUS_PIN, kPORT_MuxAsGpio);
GPIO_PinInit(BOARD_CELL_PIN_GPIO, BOARD_CELL_STATUS_PIN, &IN);
#if BOARD_CELL_RESET_PIN
PORT_SetPinMux(BOARD_CELL_PIN_PORT, BOARD_CELL_RESET_PIN, kPORT_MuxAsGpio);
GPIO_PinInit(BOARD_CELL_PIN_GPIO, BOARD_CELL_RESET_PIN, &OUTTRUE);
#endif
PORT_SetPinMux(BOARD_CELL_PIN_PORT, BOARD_CELL_PWRKEY_PIN, kPORT_MuxAsGpio);
GPIO_PinInit(BOARD_CELL_PIN_GPIO, BOARD_CELL_PWRKEY_PIN, &OUTTRUE);
// the ring identifier is optional, only use if a pin and port exists
#if BOARD_CELL_RI_PIN
PORT_SetPinMux(BOARD_CELL_PIN_PORT, BOARD_CELL_RI_PIN, kPORT_MuxAsGpio);
GPIO_PinInit(BOARD_CELL_PIN_GPIO, BOARD_CELL_RI_PIN, &IN);
#endif
#if BOARD_CELL_PWR_DOMAIN
const gpio_pin_config_t OUTFALSE = {kGPIO_DigitalOutput, false};
CLOCK_EnableClock(BOARD_CELL_PWR_EN_CLOCK);
PORT_SetPinMux(BOARD_CELL_PWR_EN_PORT, BOARD_CELL_PWR_EN_PIN, kPORT_MuxAsGpio);
GPIO_PinInit(BOARD_CELL_PWR_EN_GPIO, BOARD_CELL_PWR_EN_PIN, &OUTFALSE);
#endif
// configure uart driver connected to the SIM800H
lpuart_config_t lpuart_config;
LPUART_GetDefaultConfig(&lpuart_config);
lpuart_config.baudRate_Bps = 115200;
lpuart_config.parityMode = kLPUART_ParityDisabled;
lpuart_config.stopBitCount = kLPUART_OneStopBit;
LPUART_Init(BOARD_CELL_UART, &lpuart_config, BOARD_CELL_PORT_CLOCK_FREQ);
LPUART_EnableRx(BOARD_CELL_UART, true);
LPUART_EnableTx(BOARD_CELL_UART, true);
LPUART_EnableInterrupts(BOARD_CELL_UART, kLPUART_RxDataRegFullInterruptEnable);
EnableIRQ(BOARD_CELL_UART_IRQ);
}
void serial_init(serial_t *obj, PinName tx, PinName rx) {
uint32_t uart_tx = pinmap_peripheral(tx, PinMap_UART_TX);
uint32_t uart_rx = pinmap_peripheral(rx, PinMap_UART_RX);
obj->index = pinmap_merge(uart_tx, uart_rx);
MBED_ASSERT((int)obj->index != NC);
// Need to initialize the clocks here as ticker init gets called before mbed_sdk_init
if (SystemCoreClock == DEFAULT_SYSTEM_CLOCK)
BOARD_BootClockRUN();
/* Set the LPUART clock source */
if (obj->index == LPUART_0) {
CLOCK_SetLpuart0Clock(1U);
} else {
CLOCK_SetLpuart1Clock(1U);
}
lpuart_config_t config;
LPUART_GetDefaultConfig(&config);
config.baudRate_Bps = 9600;
config.enableTx = false;
config.enableRx = false;
LPUART_Init(uart_addrs[obj->index], &config, CLOCK_GetFreq(uart_clocks[obj->index]));
pinmap_pinout(tx, PinMap_UART_TX);
pinmap_pinout(rx, PinMap_UART_RX);
if (tx != NC) {
LPUART_EnableTx(uart_addrs[obj->index], true);
pin_mode(tx, PullUp);
}
if (rx != NC) {
LPUART_EnableRx(uart_addrs[obj->index], true);
pin_mode(rx, PullUp);
}
if (obj->index == STDIO_UART) {
stdio_uart_inited = 1;
memcpy(&stdio_uart, obj, sizeof(serial_t));
}
}
/*!
* @brief Main function
*/
int main(void)
{
lpuart_config_t config;
BOARD_InitPins();
BOARD_BootClockRUN();
CLOCK_SetLpuart1Clock(1U);
/*
* config.baudRate_Bps = 115200U;
* config.parityMode = kLPUART_ParityDisabled;
* config.stopBitCount = kLPUART_OneStopBit;
* config.txFifoWatermark = 0;
* config.rxFifoWatermark = 0;
* config.enableTx = false;
* config.enableRx = false;
*/
LPUART_GetDefaultConfig(&config);
config.baudRate_Bps = BOARD_DEBUG_UART_BAUDRATE;
config.enableTx = true;
config.enableRx = true;
LPUART_Init(DEMO_LPUART, &config, CLOCK_GetFreq(DEMO_LPUART_CLKSRC));
/* Send g_tipString out. */
LPUART_WriteBlocking(DEMO_LPUART, g_tipString, sizeof(g_tipString) / sizeof(g_tipString[0]));
/* Enable RX interrupt. */
LPUART_EnableInterrupts(DEMO_LPUART, kLPUART_RxDataRegFullInterruptEnable);
EnableIRQ(DEMO_LPUART_IRQn);
while (1)
{
/* Send data only when LPUART TX register is empty and ring buffer has data to send out. */
while ((kLPUART_TxDataRegEmptyFlag & LPUART_GetStatusFlags(DEMO_LPUART)) && (rxIndex != txIndex))
{
LPUART_WriteByte(DEMO_LPUART, demoRingBuffer[txIndex]);
txIndex++;
txIndex %= DEMO_RING_BUFFER_SIZE;
}
}
}
static int mcux_lpuart_init(struct device *dev)
{
const struct mcux_lpuart_config *config = dev->config->config_info;
lpuart_config_t uart_config;
u32_t clock_freq;
clock_freq = CLOCK_GetFreq(config->clock_source);
LPUART_GetDefaultConfig(&uart_config);
uart_config.enableTx = true;
uart_config.enableRx = true;
uart_config.baudRate_Bps = config->baud_rate;
LPUART_Init(config->base, &uart_config, clock_freq);
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
config->irq_config_func(dev);
#endif
return 0;
}
void serial_init(serial_t *obj, PinName tx, PinName rx)
{
uint32_t uart_tx = pinmap_peripheral(tx, PinMap_UART_TX);
uint32_t uart_rx = pinmap_peripheral(rx, PinMap_UART_RX);
obj->index = pinmap_merge(uart_tx, uart_rx);
MBED_ASSERT((int)obj->index != NC);
/* Set the LPUART clock source */
if (obj->index == LPUART_0) {
CLOCK_SetLpuart0Clock(1U);
} else {
CLOCK_SetLpuart1Clock(1U);
}
lpuart_config_t config;
LPUART_GetDefaultConfig(&config);
config.baudRate_Bps = 9600;
config.enableTx = false;
config.enableRx = false;
LPUART_Init(uart_addrs[obj->index], &config, CLOCK_GetFreq(uart_clocks[obj->index]));
pinmap_pinout(tx, PinMap_UART_TX);
pinmap_pinout(rx, PinMap_UART_RX);
if (tx != NC) {
LPUART_EnableTx(uart_addrs[obj->index], true);
pin_mode(tx, PullUp);
}
if (rx != NC) {
LPUART_EnableRx(uart_addrs[obj->index], true);
pin_mode(rx, PullUp);
}
if (obj->index == STDIO_UART) {
stdio_uart_inited = 1;
memcpy(&stdio_uart, obj, sizeof(serial_t));
}
}
/*!
* @brief Main function
*/
int main(void)
{
lpuart_config_t lpuartConfig;
lpuart_transfer_t xfer;
lpuart_transfer_t sendXfer;
lpuart_transfer_t receiveXfer;
BOARD_InitPins();
BOARD_BootClockRUN();
CLOCK_SetLpuartClock(1U);
/* Initialize the LPUART. */
/*
* lpuartConfig.baudRate_Bps = 115200U;
* lpuartConfig.parityMode = kLPUART_ParityDisabled;
* lpuartConfig.stopBitCount = kLPUART_OneStopBit;
* lpuartConfig.txFifoWatermark = 0;
* lpuartConfig.rxFifoWatermark = 0;
* lpuartConfig.enableTx = false;
* lpuartConfig.enableRx = false;
*/
LPUART_GetDefaultConfig(&lpuartConfig);
lpuartConfig.baudRate_Bps = BOARD_DEBUG_UART_BAUDRATE;
lpuartConfig.enableTx = true;
lpuartConfig.enableRx = true;
LPUART_Init(DEMO_LPUART, &lpuartConfig, CLOCK_GetFreq(DEMO_LPUART_CLKSRC));
/* Configure DMA. */
DMAMGR_Init();
/* Request dma channels from DMA manager. */
DMAMGR_RequestChannel(LPUART_TX_DMA_REQUEST, LPUART_TX_DMA_CHANNEL, &g_lpuartTxEdmaHandle);
DMAMGR_RequestChannel(LPUART_RX_DMA_REQUEST, LPUART_RX_DMA_CHANNEL, &g_lpuartRxEdmaHandle);
/* Create LPUART DMA handle. */
LPUART_TransferCreateHandleEDMA(DEMO_LPUART, &g_lpuartEdmaHandle, LPUART_UserCallback, NULL, &g_lpuartTxEdmaHandle,
&g_lpuartRxEdmaHandle);
/* Send g_tipString out. */
xfer.data = g_tipString;
xfer.dataSize = sizeof(g_tipString) - 1;
txOnGoing = true;
LPUART_SendEDMA(DEMO_LPUART, &g_lpuartEdmaHandle, &xfer);
/* Wait send finished */
while (txOnGoing)
{
}
/* Start to echo. */
sendXfer.data = g_txBuffer;
sendXfer.dataSize = ECHO_BUFFER_LENGTH;
receiveXfer.data = g_rxBuffer;
receiveXfer.dataSize = ECHO_BUFFER_LENGTH;
while (1)
{
/* If RX is idle and g_rxBuffer is empty, start to read data to g_rxBuffer. */
if ((!rxOnGoing) && rxBufferEmpty)
{
rxOnGoing = true;
LPUART_ReceiveEDMA(DEMO_LPUART, &g_lpuartEdmaHandle, &receiveXfer);
}
/* If TX is idle and g_txBuffer is full, start to send data. */
if ((!txOnGoing) && txBufferFull)
{
txOnGoing = true;
LPUART_SendEDMA(DEMO_LPUART, &g_lpuartEdmaHandle, &sendXfer);
}
/* If g_txBuffer is empty and g_rxBuffer is full, copy g_rxBuffer to g_txBuffer. */
if ((!rxBufferEmpty) && (!txBufferFull))
{
memcpy(g_txBuffer, g_rxBuffer, ECHO_BUFFER_LENGTH);
rxBufferEmpty = true;
txBufferFull = true;
}
}
}