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soc/rtc_wdt: Add API functions for rtc_wdt

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Added functions:
rtc_wdt_protect_off/on
rtc_wdt_set_length_of_reset_signal
rtc_wdt_set_stage
rtc_wdt_set_time
rtc_wdt_feed
rtc_wdt_disable/enable
This commit is contained in:
Konstantin Kondrashov
2018-07-23 15:59:37 +05:00
parent b4b1b361da
commit a8e46775c6
8 changed files with 351 additions and 69 deletions
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44
components/esp32/panic.c
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@@ -30,6 +30,7 @@
#include "soc/timer_group_reg.h"
#include "soc/cpu.h"
#include "soc/rtc.h"
#include "soc/rtc_wdt.h"
#include "esp_gdbstub.h"
#include "esp_panic.h"
@@ -374,32 +375,6 @@ static inline void disableAllWdts()
TIMERG1.wdt_wprotect = 0;
}
static void esp_panic_wdt_start()
{
if (REG_GET_BIT(RTC_CNTL_WDTCONFIG0_REG, RTC_CNTL_WDT_EN)) {
return;
}
WRITE_PERI_REG(RTC_CNTL_WDTWPROTECT_REG, RTC_CNTL_WDT_WKEY_VALUE);
WRITE_PERI_REG(RTC_CNTL_WDTFEED_REG, 1);
REG_SET_FIELD(RTC_CNTL_WDTCONFIG0_REG, RTC_CNTL_WDT_SYS_RESET_LENGTH, 7);
REG_SET_FIELD(RTC_CNTL_WDTCONFIG0_REG, RTC_CNTL_WDT_CPU_RESET_LENGTH, 7);
REG_SET_FIELD(RTC_CNTL_WDTCONFIG0_REG, RTC_CNTL_WDT_STG0, RTC_WDT_STG_SEL_RESET_SYSTEM);
// 64KB of core dump data (stacks of about 30 tasks) will produce ~85KB base64 data.
// @ 115200 UART speed it will take more than 6 sec to print them out.
WRITE_PERI_REG(RTC_CNTL_WDTCONFIG1_REG, rtc_clk_slow_freq_get_hz() * 7);
REG_SET_BIT(RTC_CNTL_WDTCONFIG0_REG, RTC_CNTL_WDT_EN);
WRITE_PERI_REG(RTC_CNTL_WDTWPROTECT_REG, 0);
}
void esp_panic_wdt_stop()
{
WRITE_PERI_REG(RTC_CNTL_WDTWPROTECT_REG, RTC_CNTL_WDT_WKEY_VALUE);
WRITE_PERI_REG(RTC_CNTL_WDTFEED_REG, 1);
REG_SET_FIELD(RTC_CNTL_WDTCONFIG0_REG, RTC_CNTL_WDT_STG0, RTC_WDT_STG_SEL_OFF);
REG_CLR_BIT(RTC_CNTL_WDTCONFIG0_REG, RTC_CNTL_WDT_EN);
WRITE_PERI_REG(RTC_CNTL_WDTWPROTECT_REG, 0);
}
static void esp_panic_dig_reset() __attribute__((noreturn));
static void esp_panic_dig_reset()
@@ -528,7 +503,18 @@ static __attribute__((noreturn)) void commonErrorHandler(XtExcFrame *frame)
int core_id = xPortGetCoreID();
// start panic WDT to restart system if we hang in this handler
esp_panic_wdt_start();
if (!rtc_wdt_is_on()) {
rtc_wdt_protect_off();
rtc_wdt_disable();
rtc_wdt_set_length_of_reset_signal(RTC_WDT_SYS_RESET_SIG, RTC_WDT_LENGTH_3_2us);
rtc_wdt_set_length_of_reset_signal(RTC_WDT_CPU_RESET_SIG, RTC_WDT_LENGTH_3_2us);
rtc_wdt_set_stage(RTC_WDT_STAGE0, RTC_WDT_STAGE_ACTION_RESET_SYSTEM);
// 64KB of core dump data (stacks of about 30 tasks) will produce ~85KB base64 data.
// @ 115200 UART speed it will take more than 6 sec to print them out.
rtc_wdt_set_time(RTC_WDT_STAGE0, 7000);
rtc_wdt_enable();
rtc_wdt_protect_on();
}
//Feed the watchdogs, so they will give us time to print out debug info
reconfigureAllWdts();
@@ -553,7 +539,7 @@ static __attribute__((noreturn)) void commonErrorHandler(XtExcFrame *frame)
#if CONFIG_ESP32_PANIC_GDBSTUB
disableAllWdts();
esp_panic_wdt_stop();
rtc_wdt_disable();
panicPutStr("Entering gdb stub now.\r\n");
esp_gdbstub_panic_handler(frame);
#else
@@ -574,7 +560,7 @@ static __attribute__((noreturn)) void commonErrorHandler(XtExcFrame *frame)
reconfigureAllWdts();
}
#endif /* CONFIG_ESP32_ENABLE_COREDUMP */
esp_panic_wdt_stop();
rtc_wdt_disable();
#if CONFIG_ESP32_PANIC_PRINT_REBOOT || CONFIG_ESP32_PANIC_SILENT_REBOOT
panicPutStr("Rebooting...\r\n");
if (frame->exccause != PANIC_RSN_CACHEERR) {