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add option to maintain some RTC GPIO pull-up/down

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philippe44
2023-09-15 20:38:47 -07:00
parent c61ff05081
commit f4e899fc60
1 changed files with 39 additions and 3 deletions
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42
components/services/services.c
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@@ -45,6 +45,7 @@ pwm_system_t pwm_system = {
static EXT_RAM_ATTR struct {
uint64_t wake_gpio, wake_level;
uint64_t rtc_gpio, rtc_level;
uint32_t delay;
} sleep_config;
@@ -136,6 +137,28 @@ static void sleep_init(void) {
ESP_LOGI(TAG, "Sleep wake-up gpio bitmap 0x%llx (active 0x%llx)", sleep_config.wake_gpio, sleep_config.wake_level);
}
}
// get the rtc-pull criteria
if ((p = strcasestr(config, "rtc"))) {
char list[32] = "", item[8];
sscanf(p, "%*[^=]=%31[^,]", list);
p = list - 1;
while (p++ && sscanf(p, "%7[^|]", item)) {
int level = 0, gpio = atoi(item);
if (!rtc_gpio_is_valid_gpio(gpio)) {
ESP_LOGE(TAG, "invalid rtc GPIO %d", gpio);
} else {
sleep_config.rtc_gpio |= 1LL << gpio;
}
if (sscanf(item, "%*[^:]:%d", &level)) sleep_config.rtc_level |= level << gpio;
p = strchr(p, '|');
}
// when moving to esp-idf more recent than 4.4.x, multiple gpio wake-up with level specific can be done
if (sleep_config.rtc_gpio) {
ESP_LOGI(TAG, "RTC forced gpio bitmap 0x%llx (active 0x%llx)", sleep_config.rtc_gpio, sleep_config.rtc_level);
}
}
// then get the gpio that activate sleep (we could check that we have a valid wake)
if ((p = strcasestr(config, "sleep"))) {
@@ -165,11 +188,24 @@ void services_sleep_activate(sleep_cause_e cause) {
// call all sleep hooks that might want to do something
for (void (**hook)(void) = sleep_hooks; *hook; hook++) (*hook)();
// isolate all possible GPIOs, except the wake-up ones
// isolate all possible GPIOs, except the wake-up and RTC-maintaines ones
esp_sleep_config_gpio_isolate();
// keep RTC domain up if we need to maintain pull-up/down of some GPIO from RTC
if (sleep_config.rtc_gpio) esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON);
for (int i = 0; i < GPIO_NUM_MAX; i++) {
if (!rtc_gpio_is_valid_gpio(i) || ((1LL << i) & sleep_config.wake_gpio)) continue;
rtc_gpio_isolate(i);
// must be a RTC GPIO
if (!rtc_gpio_is_valid_gpio(i)) continue;
// do we need to maintain a pull-up or down of that GPIO
if ((1LL << i) & sleep_config.rtc_gpio) {
if ((sleep_config.rtc_level >> i) & 0x01) rtc_gpio_pullup_en(i);
else rtc_gpio_pulldown_en(i);
// or is this not wake-up GPIO, just isolate it
} else if (!((1LL << i) & sleep_config.wake_gpio)) {
rtc_gpio_isolate(i);
}
}
// is there just one GPIO