void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
{
IRQn_Type uart_irqs[] = LPUART_RX_TX_IRQS;
uint32_t vector = 0;
switch (obj->index) {
case 0:
vector = (uint32_t)&uart0_irq;
break;
case 1:
vector = (uint32_t)&uart1_irq;
break;
default:
break;
}
if (enable) {
switch (irq) {
case RxIrq:
LPUART_EnableInterrupts(uart_addrs[obj->index], kLPUART_RxDataRegFullInterruptEnable);
break;
case TxIrq:
LPUART_EnableInterrupts(uart_addrs[obj->index], kLPUART_TxDataRegEmptyInterruptEnable);
break;
default:
break;
}
NVIC_SetVector(uart_irqs[obj->index], vector);
NVIC_EnableIRQ(uart_irqs[obj->index]);
} else { // disable
int all_disabled = 0;
SerialIrq other_irq = (irq == RxIrq) ? (TxIrq) : (RxIrq);
switch (irq) {
case RxIrq:
LPUART_DisableInterrupts(uart_addrs[obj->index], kLPUART_RxDataRegFullInterruptEnable);
break;
case TxIrq:
LPUART_DisableInterrupts(uart_addrs[obj->index], kLPUART_TxDataRegEmptyInterruptEnable);
break;
default:
break;
}
switch (other_irq) {
case RxIrq:
all_disabled = ((LPUART_GetEnabledInterrupts(uart_addrs[obj->index]) & kLPUART_RxDataRegFullInterruptEnable) == 0);
break;
case TxIrq:
all_disabled = ((LPUART_GetEnabledInterrupts(uart_addrs[obj->index]) & kLPUART_TxDataRegEmptyInterruptEnable) == 0);
break;
default:
break;
}
if (all_disabled)
NVIC_DisableIRQ(uart_irqs[obj->index]);
}
}
static void mcux_lpuart_irq_rx_enable(struct device *dev)
{
const struct mcux_lpuart_config *config = dev->config->config_info;
u32_t mask = kLPUART_RxDataRegFullInterruptEnable;
LPUART_EnableInterrupts(config->base, mask);
}
static rt_err_t imxrt_control(struct rt_serial_device *serial, int cmd, void *arg)
{
struct imxrt_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct imxrt_uart *)serial->parent.user_data;
switch (cmd)
{
case RT_DEVICE_CTRL_CLR_INT:
/* disable interrupt */
LPUART_DisableInterrupts(uart->uart_base, kLPUART_RxDataRegFullInterruptEnable);
/* disable rx irq */
DisableIRQ(uart->irqn);
break;
case RT_DEVICE_CTRL_SET_INT:
/* enable interrupt */
LPUART_EnableInterrupts(uart->uart_base, kLPUART_RxDataRegFullInterruptEnable);
/* enable rx irq */
EnableIRQ(uart->irqn);
break;
}
return RT_EOK;
}
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;
}
static void mcux_lpuart_irq_err_enable(struct device *dev)
{
const struct mcux_lpuart_config *config = dev->config->config_info;
u32_t mask = kLPUART_NoiseErrorInterruptEnable |
kLPUART_FramingErrorInterruptEnable |
kLPUART_ParityErrorInterruptEnable;
LPUART_EnableInterrupts(config->base, mask);
}
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);
}
/*!
* @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;
}
}
}
