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driver/gpio: support wakeup function for RTC IOs

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This commit is contained in:
Ivan Grokhotkov
2018-08-14 01:57:32 +03:00
parent 5c3ca78a07
commit 1c5522575e
4 changed files with 97 additions and 40 deletions
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7
components/driver/gpio.c
View File

@@ -423,16 +423,19 @@ esp_err_t gpio_isr_register(void (*fn)(void*), void * arg, int intr_alloc_flags,
return esp_intr_alloc(ETS_GPIO_INTR_SOURCE, intr_alloc_flags, fn, arg, handle);
}
/*only level interrupt can be used for wake-up function*/
esp_err_t gpio_wakeup_enable(gpio_num_t gpio_num, gpio_int_type_t intr_type)
{
GPIO_CHECK(GPIO_IS_VALID_GPIO(gpio_num), "GPIO number error", ESP_ERR_INVALID_ARG);
esp_err_t ret = ESP_OK;
if (( intr_type == GPIO_INTR_LOW_LEVEL ) || ( intr_type == GPIO_INTR_HIGH_LEVEL )) {
if (RTC_GPIO_IS_VALID_GPIO(gpio_num)) {
ret = rtc_gpio_wakeup_enable(gpio_num, intr_type);
} else {
GPIO.pin[gpio_num].int_type = intr_type;
GPIO.pin[gpio_num].wakeup_enable = 0x1;
}
} else {
ESP_LOGE(GPIO_TAG, "GPIO wakeup only support Level mode,but edge mode set. gpio_num:%u", gpio_num);
ESP_LOGE(GPIO_TAG, "GPIO wakeup only supports level mode, but edge mode set. gpio_num:%u", gpio_num);
ret = ESP_ERR_INVALID_ARG;
}
return ret;

23
components/driver/include/driver/rtc_io.h
View File

@@ -246,6 +246,29 @@ esp_err_t rtc_gpio_set_drive_capability(gpio_num_t gpio_num, gpio_drive_cap_t st
*/
esp_err_t rtc_gpio_get_drive_capability(gpio_num_t gpio_num, gpio_drive_cap_t* strength);
/**
* @brief Enable wakeup from sleep mode using specific GPIO
* @param gpio_num GPIO number
* @param intr_type Wakeup on high level (GPIO_INTR_HIGH_LEVEL) or low level
* (GPIO_INTR_LOW_LEVEL)
* @return
* - ESP_OK on success
* - ESP_ERR_INVALID_ARG if gpio_num is not an RTC IO, or intr_type is not
* one of GPIO_INTR_HIGH_LEVEL, GPIO_INTR_LOW_LEVEL.
*/
esp_err_t rtc_gpio_wakeup_enable(gpio_num_t gpio_num, gpio_int_type_t intr_type);
/**
* @brief Disable wakeup from sleep mode using specific GPIO
* @param gpio_num GPIO number
* @return
* - ESP_OK on success
* - ESP_ERR_INVALID_ARG if gpio_num is not an RTC IO
*/
esp_err_t rtc_gpio_wakeup_disable(gpio_num_t gpio_num);
#ifdef __cplusplus
}
#endif

31
components/driver/rtc_module.c
View File

@@ -383,6 +383,37 @@ void rtc_gpio_force_hold_dis_all()
}
}
esp_err_t rtc_gpio_wakeup_enable(gpio_num_t gpio_num, gpio_int_type_t intr_type)
{
int rtc_num = rtc_gpio_desc[gpio_num].rtc_num;
if (rtc_num < 0) {
return ESP_ERR_INVALID_ARG;
}
if (( intr_type != GPIO_INTR_LOW_LEVEL ) && ( intr_type != GPIO_INTR_HIGH_LEVEL )) {
return ESP_ERR_INVALID_ARG;
}
uint32_t reg = RTC_GPIO_PIN0_REG + rtc_num * sizeof(uint32_t);
/* each pin has its own register, spinlock not needed */
REG_SET_BIT(reg, RTC_GPIO_PIN0_WAKEUP_ENABLE);
REG_SET_FIELD(reg, RTC_GPIO_PIN0_INT_TYPE, intr_type);
return ESP_OK;
}
esp_err_t rtc_gpio_wakeup_disable(gpio_num_t gpio_num)
{
int rtc_num = rtc_gpio_desc[gpio_num].rtc_num;
if (rtc_num < 0) {
return ESP_ERR_INVALID_ARG;
}
uint32_t reg = RTC_GPIO_PIN0_REG + rtc_num * sizeof(uint32_t);
/* each pin has its own register, spinlock not needed */
REG_CLR_BIT(reg, RTC_GPIO_PIN0_WAKEUP_ENABLE);
REG_SET_FIELD(reg, RTC_GPIO_PIN0_INT_TYPE, 0);
return ESP_OK;
}
/*---------------------------------------------------------------
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