espressif/esp-idf
1
0
Fork 1
mirror of https://github.com/espressif/esp-idf.git synced 2025-11-01 07:31:42 +01:00
Code Issues Packages Projects Releases Wiki Activity

Merge branch 'feature/esp32s2beta' into feature/esp32s2beta_merge

Browse Source
This commit is contained in:
Angus Gratton
2019-10-15 15:03:45 +11:00
committed by Angus Gratton
parent 496ede9bcd 27aaff798b
commit f5238d5e42
13 changed files with 343 additions and 183 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
components/esp32s2beta/clk.c
View File

@@ -66,10 +66,10 @@ void esp_clk_init(void)
#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
// WDT uses a SLOW_CLK clock source. After a function select_rtc_slow_clk a frequency of this source can changed.
// If the frequency changes from 150kHz to 32kHz, then the timeout set for the WDT will increase 4.6 times.
// If the frequency changes from 90kHz to 32kHz, then the timeout set for the WDT will increase 2.8 times.
// Therefore, for the time of frequency change, set a new lower timeout value (1.6 sec).
// This prevents excessive delay before resetting in case the supply voltage is drawdown.
// (If frequency is changed from 150kHz to 32kHz then WDT timeout will increased to 1.6sec * 150/32 = 7.5 sec).
// (If frequency is changed from 90kHz to 32kHz then WDT timeout will increased to 1.6sec * 90/32 = 4.5 sec).
rtc_wdt_protect_off();
rtc_wdt_feed();
rtc_wdt_set_time(RTC_WDT_STAGE0, 1600);