static void pins_to_default(nrfx_uart_t const * p_instance)
{
/* Reset pins to default states */
uint32_t txd;
uint32_t rxd;
uint32_t rts;
uint32_t cts;
txd = nrf_uart_tx_pin_get(p_instance->p_reg);
rxd = nrf_uart_rx_pin_get(p_instance->p_reg);
rts = nrf_uart_rts_pin_get(p_instance->p_reg);
cts = nrf_uart_cts_pin_get(p_instance->p_reg);
nrf_uart_txrx_pins_disconnect(p_instance->p_reg);
nrf_uart_hwfc_pins_disconnect(p_instance->p_reg);
if (txd != NRF_UART_PSEL_DISCONNECTED)
{
nrf_gpio_cfg_default(txd);
}
if (rxd != NRF_UART_PSEL_DISCONNECTED)
{
nrf_gpio_cfg_default(rxd);
}
if (cts != NRF_UART_PSEL_DISCONNECTED)
{
nrf_gpio_cfg_default(cts);
}
if (rts != NRF_UART_PSEL_DISCONNECTED)
{
nrf_gpio_cfg_default(rts);
}
}
static rt_err_t _uart_ctrl(struct rt_serial_device *serial, int cmd, void *arg)
{
UART_CFG_T *instance = working_cfg;
RT_ASSERT(serial != RT_NULL);
if (serial->parent.user_data != RT_NULL)
{
instance = (UART_CFG_T*)serial->parent.user_data;
}
switch (cmd)
{
/* disable interrupt */
case RT_DEVICE_CTRL_CLR_INT:
nrf_uart_task_trigger(instance->uart.reg.p_uart, NRF_UART_TASK_STOPRX);
nrf_uart_int_disable(instance->uart.reg.p_uart, NRF_UART_INT_MASK_RXDRDY
| NRF_UART_INT_MASK_RXTO
| NRF_UART_INT_MASK_ERROR);
nrf_drv_common_irq_disable(nrf_drv_get_IRQn((void *)instance->uart.reg.p_uart));
break;
/* enable interrupt */
case RT_DEVICE_CTRL_SET_INT:
nrf_uart_event_clear(instance->uart.reg.p_uart, NRF_UART_EVENT_RXDRDY);
nrf_uart_event_clear(instance->uart.reg.p_uart, NRF_UART_EVENT_RXTO);
nrf_uart_event_clear(instance->uart.reg.p_uart, NRF_UART_EVENT_ERROR);
/* Enable RX interrupt. */
nrf_uart_int_enable(instance->uart.reg.p_uart, NRF_UART_INT_MASK_RXDRDY
| NRF_UART_INT_MASK_RXTO
| NRF_UART_INT_MASK_ERROR);
nrf_drv_common_irq_enable(nrf_drv_get_IRQn((void *)instance->uart.reg.p_uart), APP_IRQ_PRIORITY_LOWEST);
nrf_uart_task_trigger(instance->uart.reg.p_uart, NRF_UART_TASK_STARTRX);
break;
case RT_DEVICE_CTRL_CUSTOM:
if ((rt_uint32_t)(arg) == UART_CONFIG_BAUD_RATE_9600)
{
instance->serial->config.baud_rate = 9600;
nrf_uart_baudrate_set(instance->uart.reg.p_uart, NRF_UART_BAUDRATE_9600);
}
else if ((rt_uint32_t)(arg) == UART_CONFIG_BAUD_RATE_115200)
{
instance->serial->config.baud_rate = 115200;
nrf_uart_baudrate_set(instance->uart.reg.p_uart, NRF_UART_BAUDRATE_115200);
}
// _uart_cfg(instance->serial, &(instance->serial->config));
// nrf_uart_task_trigger(instance->uart.reg.p_uart, NRF_UART_TASK_STARTRX);
break;
case RT_DEVICE_CTRL_PIN:
if (working_cfg != instance)
{
_uart_cfg(instance->serial, &(instance->serial->config));
}
break;
case RT_DEVICE_POWERSAVE:
nrf_uart_disable(instance->uart.reg.p_uart);
nrf_uart_txrx_pins_disconnect(instance->uart.reg.p_uart);
nrf_gpio_pin_clear(instance->rx_pin);
nrf_gpio_cfg_output(instance->rx_pin);
nrf_gpio_pin_clear(instance->tx_pin);
nrf_gpio_cfg_output(instance->tx_pin);
break;
case RT_DEVICE_WAKEUP:
_uart_cfg(instance->serial, &(instance->serial->config));
break;
default:
return RT_ERROR;
}
return RT_EOK;
}
