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feat(gpio): add function allowing switching input source from GPIO back to IOMUX

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Michael (XIAO Xufeng) 2018-04-24 01:23:12 +08:00 committed by michael
parent bb1f3ae264
commit 1f085b1a3b
2 changed files with 33 additions and 4 deletions
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13
components/driver/gpio.c
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@ -547,3 +547,16 @@ esp_err_t gpio_hold_dis(gpio_num_t gpio_num)
}
return r == ESP_OK ? ESP_OK : ESP_ERR_NOT_SUPPORTED;
}
void gpio_iomux_in(uint32_t gpio, uint32_t signal_idx)
{
GPIO.func_in_sel_cfg[signal_idx].sig_in_sel = 0;
PIN_INPUT_ENABLE(GPIO_PIN_MUX_REG[gpio]);
}
void gpio_iomux_out(uint8_t gpio_num, int func, bool oen_inv)
{
GPIO.func_out_sel_cfg[gpio_num].oen_sel = 0;
GPIO.func_out_sel_cfg[gpio_num].oen_inv_sel = oen_inv;
PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[gpio_num], func);
}

16
components/driver/include/driver/gpio.h
View file

@ -550,6 +550,22 @@ esp_err_t gpio_hold_en(gpio_num_t gpio_num);
*/
esp_err_t gpio_hold_dis(gpio_num_t gpio_num);
/**
* @brief Set pad input to a peripheral signal through the IOMUX.
* @param gpio_num GPIO number of the pad.
* @param signal_idx Peripheral signal id to input. One of the ``*_IN_IDX`` signals in ``soc/gpio_sig_map.h``.
*/
void gpio_iomux_in(uint32_t gpio_num, uint32_t signal_idx);
/**
* @brief Set peripheral output to an GPIO pad through the IOMUX.
* @param gpio_num gpio_num GPIO number of the pad.
* @param func The function number of the peripheral pin to output pin.
* One of the ``FUNC_X_*`` of specified pin (X) in ``soc/io_mux_reg.h``.
* @param oen_inv True if the output enable needs to be inversed, otherwise False.
*/
void gpio_iomux_out(uint8_t gpio_num, int func, bool oen_inv);
#ifdef __cplusplus
}
#endif