static void apply_config(nrfx_uarte_t const * p_instance,
nrfx_uarte_config_t const * p_config)
{
if (p_config->pseltxd != NRF_UARTE_PSEL_DISCONNECTED)
{
nrf_gpio_pin_set(p_config->pseltxd);
nrf_gpio_cfg_output(p_config->pseltxd);
}
if (p_config->pselrxd != NRF_UARTE_PSEL_DISCONNECTED)
{
nrf_gpio_cfg_input(p_config->pselrxd, NRF_GPIO_PIN_NOPULL);
}
nrf_uarte_baudrate_set(p_instance->p_reg, p_config->baudrate);
nrf_uarte_configure(p_instance->p_reg, p_config->parity, p_config->hwfc);
nrf_uarte_txrx_pins_set(p_instance->p_reg, p_config->pseltxd, p_config->pselrxd);
if (p_config->hwfc == NRF_UARTE_HWFC_ENABLED)
{
if (p_config->pselcts != NRF_UARTE_PSEL_DISCONNECTED)
{
nrf_gpio_cfg_input(p_config->pselcts, NRF_GPIO_PIN_NOPULL);
}
if (p_config->pselrts != NRF_UARTE_PSEL_DISCONNECTED)
{
nrf_gpio_pin_set(p_config->pselrts);
nrf_gpio_cfg_output(p_config->pselrts);
}
nrf_uarte_hwfc_pins_set(p_instance->p_reg, p_config->pselrts, p_config->pselcts);
}
}
__STATIC_INLINE void apply_config(nrf_drv_uart_config_t const * p_config)
{
nrf_gpio_cfg_output(p_config->pseltxd);
nrf_gpio_pin_set(p_config->pseltxd);
nrf_gpio_cfg_input(p_config->pselrxd, NRF_GPIO_PIN_NOPULL);
CODE_FOR_UARTE(
nrf_uarte_baudrate_set(NRF_UARTE0, (nrf_uarte_baudrate_t)p_config->baudrate);
nrf_uarte_configure(NRF_UARTE0, (nrf_uarte_parity_t)p_config->parity,
(nrf_uarte_hwfc_t)p_config->hwfc);
nrf_uarte_txrx_pins_set(NRF_UARTE0, p_config->pseltxd, p_config->pselrxd);
if (p_config->hwfc == NRF_UART_HWFC_ENABLED)
{
nrf_gpio_cfg_output(p_config->pselrts);
nrf_gpio_pin_set(p_config->pselrts);
nrf_gpio_cfg_input(p_config->pselcts, NRF_GPIO_PIN_NOPULL);
nrf_uarte_hwfc_pins_set(NRF_UARTE0, p_config->pselrts, p_config->pselcts);
}
)
static int uarte_instance_init(struct device *dev,
const struct uarte_init_config *config,
u8_t interrupts_active)
{
int err;
NRF_UARTE_Type *uarte = get_uarte_instance(dev);
struct uarte_nrfx_data *data = get_dev_data(dev);
nrf_gpio_pin_write(config->pseltxd, 1);
nrf_gpio_cfg_output(config->pseltxd);
nrf_gpio_cfg_input(config->pselrxd, NRF_GPIO_PIN_NOPULL);
nrf_uarte_txrx_pins_set(uarte,
config->pseltxd,
config->pselrxd);
if (config->hwfc == NRF_UARTE_HWFC_ENABLED) {
nrf_gpio_pin_write(config->pselrts, 1);
nrf_gpio_cfg_output(config->pselrts);
nrf_gpio_cfg_input(config->pselcts, NRF_GPIO_PIN_NOPULL);
nrf_uarte_hwfc_pins_set(uarte,
config->pselrts,
config->pselcts);
}
/* Configure flow control and parity checking */
nrf_uarte_configure(uarte,
config->parity,
config->hwfc);
err = baudrate_set(dev, config->baudrate);
if (err) {
return err;
}
/* Enable receiver and transmitter */
nrf_uarte_enable(uarte);
nrf_uarte_event_clear(uarte, NRF_UARTE_EVENT_ENDRX);
nrf_uarte_rx_buffer_set(uarte, &data->rx_data, 1);
nrf_uarte_task_trigger(uarte, NRF_UARTE_TASK_STARTRX);
#if UARTE_INTERRUPT_DRIVEN
if (interrupts_active) {
/* Set ENDTX event by requesting fake (zero-length) transfer.
* Pointer to RAM variable (data->tx_buffer) is set because
* otherwise such operation may result in HardFault or RAM
* corruption.
*/
nrf_uarte_tx_buffer_set(uarte, data->tx_buffer, 0);
nrf_uarte_task_trigger(uarte, NRF_UARTE_TASK_STARTTX);
/* switch off transmitter to save an energy */
nrf_uarte_task_trigger(uarte, NRF_UARTE_TASK_STOPTX);
}
#endif /* UARTE_INTERRUPT_DRIVEN */
return 0;
}