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drivers: uart: Properly configure pins in NRF UARTE power management

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Configure pins before enabling and after disabling UARTE through
power management functions.

Signed-off-by: Mieszko Mierunski <mieszko.mierunski@nordicsemi.no>
This commit is contained in:
Mieszko Mierunski 2019-08-27 11:25:57 +02:00 • committed by Ioannis Glaropoulos
commit 6a6ed174b7
1 changed files with 10 additions and 0 deletions
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10
drivers/serial/uart_nrfx_uarte.c
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@ -1205,8 +1205,14 @@ static int uarte_instance_init(struct device *dev,
static void uarte_nrfx_set_power_state(struct device *dev, u32_t new_state)
{
NRF_UARTE_Type *uarte = get_uarte_instance(dev);
u32_t tx_pin = nrf_uarte_tx_pin_get(uarte);
u32_t rx_pin = nrf_uarte_rx_pin_get(uarte);
if (new_state == DEVICE_PM_ACTIVE_STATE) {
nrf_gpio_pin_write(tx_pin, 1);
nrf_gpio_cfg_output(tx_pin);
nrf_gpio_cfg_input(rx_pin, NRF_GPIO_PIN_NOPULL);
nrf_uarte_enable(uarte);
#ifdef CONFIG_UART_ASYNC_API
if (get_dev_data(dev)->async) {
@ -1225,6 +1231,8 @@ static void uarte_nrfx_set_power_state(struct device *dev, u32_t new_state)
#ifdef CONFIG_UART_ASYNC_API
if (get_dev_data(dev)->async) {
nrf_uarte_disable(uarte);
nrf_gpio_cfg_default(tx_pin);
nrf_gpio_cfg_default(rx_pin);
return;
}
#endif
@ -1234,6 +1242,8 @@ static void uarte_nrfx_set_power_state(struct device *dev, u32_t new_state)
}
nrf_uarte_event_clear(uarte, NRF_UARTE_EVENT_RXTO);
nrf_uarte_disable(uarte);
nrf_gpio_cfg_default(tx_pin);
nrf_gpio_cfg_default(rx_pin);
}
}