alex/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2025-08-08 04:02:27 +00:00
Code Issues Packages Projects Releases Wiki Activity

soc/rtc: add function to get/set VDDSDIO configuration

Browse Source 
Also consider case of VDDSDIO force powered on in rtc_sleep.
This commit is contained in:
Ivan Grokhotkov
2017-11-01 15:16:32 +08:00
parent 5a294c9acd
commit fb9c106bcb
4 changed files with 96 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
components/esp32/sleep_modes.c
View File

@@ -198,14 +198,22 @@ static void rtc_wdt_disable()
* Placed into IRAM as flash may need some time to be powered on.
*/
static esp_err_t esp_light_sleep_inner(uint32_t pd_flags,
rtc_cpu_freq_t cpu_freq, uint32_t flash_enable_time_us) IRAM_ATTR __attribute__((noinline));
rtc_cpu_freq_t cpu_freq, uint32_t flash_enable_time_us,
rtc_vddsdio_config_t vddsdio_config) IRAM_ATTR __attribute__((noinline));
static esp_err_t esp_light_sleep_inner(uint32_t pd_flags,
rtc_cpu_freq_t cpu_freq, uint32_t flash_enable_time_us)
rtc_cpu_freq_t cpu_freq, uint32_t flash_enable_time_us,
rtc_vddsdio_config_t vddsdio_config)
{
// Enter sleep
esp_err_t err = esp_sleep_start(pd_flags);
// If VDDSDIO regulator was controlled by RTC registers before sleep,
// restore the configuration.
if (vddsdio_config.force) {
rtc_vddsdio_set_config(vddsdio_config);
}
// Restore CPU frequency
rtc_clk_cpu_freq_set(cpu_freq);
@@ -244,6 +252,7 @@ esp_err_t esp_light_sleep_start()
s_config.sleep_duration -= flash_enable_time_us;
}
#endif //CONFIG_SPIRAM_SUPPORT
rtc_vddsdio_config_t vddsdio_config = rtc_vddsdio_get_config();
// Safety net: enable WDT in case exit from light sleep fails
rtc_wdt_enable(1000);
@@ -252,7 +261,8 @@ esp_err_t esp_light_sleep_start()
rtc_cpu_freq_t cpu_freq = rtc_clk_cpu_freq_get();
// Enter sleep, then wait for flash to be ready on wakeup
esp_err_t err = esp_light_sleep_inner(pd_flags, cpu_freq, flash_enable_time_us);
esp_err_t err = esp_light_sleep_inner(pd_flags, cpu_freq,
flash_enable_time_us, vddsdio_config);
// At this point, if FRC1 is used for timekeeping, time will be lagging behind.
// This will update the microsecond count based on RTC timer.