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feature(gpio): add APIs to set and get pad drive capability. RTC pads use RTC registers to contol drive capability.

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Wangjialin
2017-07-17 15:38:19 +08:00
parent aef5e90cce
commit c30149e4bd
4 changed files with 145 additions and 40 deletions
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26
components/driver/gpio.c
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@@ -456,3 +456,29 @@ esp_err_t gpio_wakeup_disable(gpio_num_t gpio_num)
GPIO.pin[gpio_num].wakeup_enable = 0;
return ESP_OK;
}
esp_err_t gpio_set_drive_capability(gpio_num_t gpio_num, gpio_drive_cap_t strength)
{
GPIO_CHECK(GPIO_IS_VALID_OUTPUT_GPIO(gpio_num), "GPIO number error", ESP_ERR_INVALID_ARG);
GPIO_CHECK(strength < GPIO_DRIVE_CAP_MAX, "GPIO drive capability error", ESP_ERR_INVALID_ARG);
if (RTC_GPIO_IS_VALID_GPIO(gpio_num)) {
rtc_gpio_set_drive_capability(gpio_num, strength);
} else {
SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[gpio_num], FUN_DRV_V, strength, FUN_DRV_S);
}
return ESP_OK;
}
esp_err_t gpio_get_drive_capability(gpio_num_t gpio_num, gpio_drive_cap_t* strength)
{
GPIO_CHECK(GPIO_IS_VALID_OUTPUT_GPIO(gpio_num), "GPIO number error", ESP_ERR_INVALID_ARG);
GPIO_CHECK(strength != NULL, "GPIO drive capability pointer error", ESP_ERR_INVALID_ARG);
if (RTC_GPIO_IS_VALID_GPIO(gpio_num)) {
return rtc_gpio_get_drive_capability(gpio_num, strength);
} else {
*strength = GET_PERI_REG_BITS2(GPIO_PIN_MUX_REG[gpio_num], FUN_DRV_V, FUN_DRV_S);
}
return ESP_OK;
}