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esp32s2: Add a Kconfig option- Number of attempts to repeat 32k XTAL calibration

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KonstantinKondrashov 2020-03-10 19:24:28 +08:00 committed by bot
parent a259746016
commit df2ea2527f
2 changed files with 17 additions and 5 deletions
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10
components/esp32s2/Kconfig
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@ -457,6 +457,16 @@ menu "ESP32S2-specific"
In case more value will help improve the definition of the launch of the crystal.
If the crystal could not start, it will be switched to internal RC.
config ESP32S2_RTC_XTAL_CAL_RETRY
int "Number of attempts to repeat 32k XTAL calibration"
default 3
depends on ESP32S2_RTC_CLK_SRC_EXT_CRYS
help
Number of attempts to repeat 32k XTAL calibration
before giving up and switching to the internal RC.
Increase this option if the 32k crystal oscillator
does not start and switches to internal RC.
config ESP32S2_DISABLE_BASIC_ROM_CONSOLE
bool "Permanently disable BASIC ROM Console"
default n

12
components/esp32s2/clk.c
View file

@ -42,6 +42,12 @@
*/
#define SLOW_CLK_CAL_CYCLES CONFIG_ESP32S2_RTC_CLK_CAL_CYCLES
#ifdef CONFIG_ESP32S2_RTC_XTAL_CAL_RETRY
#define RTC_XTAL_CAL_RETRY CONFIG_ESP32S2_RTC_XTAL_CAL_RETRY
#else
#define RTC_XTAL_CAL_RETRY 1
#endif
#define MHZ (1000000)
/* Lower threshold for a reasonably-looking calibration value for a 32k XTAL.
@ -148,11 +154,7 @@ static void select_rtc_slow_clk(slow_clk_sel_t slow_clk)
/* number of times to repeat 32k XTAL calibration
* before giving up and switching to the internal RC
*/
#ifdef CONFIG_IDF_TARGET_ESP32
int retry_32k_xtal = 1; /* don't change the behavior for the ESP32 */
#else
int retry_32k_xtal = 3;
#endif
int retry_32k_xtal = RTC_XTAL_CAL_RETRY;
do {
if (rtc_slow_freq == RTC_SLOW_FREQ_32K_XTAL) {