ygaklk commented on a change in pull request #1630: Hal gpio deinit
URL: https://github.com/apache/mynewt-core/pull/1630#discussion_r254303880
##########
File path: hw/mcu/nordic/nrf52xxx/src/hal_gpio.c
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@@ -139,6 +139,27 @@ hal_gpio_init_out(int pin, int val)
return 0;
}
+/**
+ * Deinitialize the specified pin to revert the previous initialization
+ *
+ * @param pin Pin number to unset
+ *
+ * @return int 0: no error; -1 otherwise.
+ */
+int
+hal_gpio_deinit(int pin)
+{
+ uint32_t conf;
+ NRF_GPIO_Type *port;
+
+ conf = GPIO_PIN_CNF_INPUT_Disconnect << GPIO_PIN_CNF_INPUT_Pos;
+ port = HAL_GPIO_PORT(pin);
+ port->PIN_CNF[pin] = conf;
+ port->DIRCLR = HAL_GPIO_MASK(pin);
Review comment:
Agree, I have made a quick copy/paste of the init_out. Fixed by:
https://github.com/apache/mynewt-core/pull/1630/commits/11a9c211abac17dde7e4ef663169ee94e92c6473
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