[TW#24068] Guru Meditation Error (when CONFIG_ESP32_RTC_CLK_CAL_CYCLES=0)

[infotrino]

Environment

• Development Kit: custom board from infotron
• Core (if using chip or module): ESP32-Wrover
• IDF version : v3.1-beta1
• Development Env: Make
• Operating System: Windows
• Power Supply: USB

Problem Description

When I set CONFIG_ESP32_RTC_CLK_CAL_CYCLES=0 by "make menuconfig",
I met guru meditation error.

I need this option to test rtc time accuracy without calibration.
current rtc time is too inaccurate when I use auto light sleep... (average error=16sec/hour)

Steps to repropduce

1. step1: copy deep_sleep example from esp-idf
2. step2: make menuconfig --> CONFIG_ESP32_RTC_CLK_CAL_CYCLES=0
3. make flash monitor

Code to reproduce this issue

sdkconfig.h--------------------------------------------
/*
*

• Automatically generated file; DO NOT EDIT.
• Espressif IoT Development Framework Configuration

*/
#define CONFIG_ESP32_PHY_MAX_TX_POWER 20
#define CONFIG_TRACEMEM_RESERVE_DRAM 0x0
#define CONFIG_FREERTOS_MAX_TASK_NAME_LEN 16
#define CONFIG_FATFS_LFN_NONE 1
#define CONFIG_TCP_RECVMBOX_SIZE 6
#define CONFIG_FATFS_CODEPAGE_437 1
#define CONFIG_LWIP_ETHARP_TRUST_IP_MAC 1
#define CONFIG_TCP_WND_DEFAULT 5744
#define CONFIG_PARTITION_TABLE_OFFSET 0x8000
#define CONFIG_SPIFFS_USE_MAGIC_LENGTH 1
#define CONFIG_ESPTOOLPY_FLASHSIZE_4MB 1
#define CONFIG_IPC_TASK_STACK_SIZE 1024
#define CONFIG_FATFS_PER_FILE_CACHE 1
#define CONFIG_ESPTOOLPY_FLASHFREQ "40m"
#define CONFIG_MBEDTLS_KEY_EXCHANGE_RSA 1
#define CONFIG_UDP_RECVMBOX_SIZE 6
#define CONFIG_FREERTOS_QUEUE_REGISTRY_SIZE 0
#define CONFIG_MBEDTLS_AES_C 1
#define CONFIG_MBEDTLS_ECP_DP_SECP521R1_ENABLED 1
#define CONFIG_MBEDTLS_GCM_C 1
#define CONFIG_ESPTOOLPY_FLASHSIZE "4MB"
#define CONFIG_HEAP_POISONING_DISABLED 1
#define CONFIG_SPIFFS_CACHE_WR 1
#define CONFIG_BROWNOUT_DET_LVL_SEL_0 1
#define CONFIG_ESP32_WIFI_DYNAMIC_TX_BUFFER 1
#define CONFIG_SPIFFS_CACHE 1
#define CONFIG_INT_WDT 1
#define CONFIG_MBEDTLS_SSL_PROTO_TLS1 1
#define CONFIG_MBEDTLS_ECDSA_C 1
#define CONFIG_ESPTOOLPY_FLASHFREQ_40M 1
#define CONFIG_LOG_BOOTLOADER_LEVEL_INFO 1
#define CONFIG_BTDM_CONTROLLER_PINNED_TO_CORE 0
#define CONFIG_FREERTOS_THREAD_LOCAL_STORAGE_POINTERS 1
#define CONFIG_MBEDTLS_ECDH_C 1
#define CONFIG_MBEDTLS_KEY_EXCHANGE_ELLIPTIC_CURVE 1
#define CONFIG_ESP32_WIFI_STATIC_RX_BUFFER_NUM 10
#define CONFIG_MBEDTLS_SSL_ALPN 1
#define CONFIG_MBEDTLS_PEM_WRITE_C 1
#define CONFIG_LOG_DEFAULT_LEVEL_INFO 1
#define CONFIG_BT_RESERVE_DRAM 0x0
#define CONFIG_FATFS_FS_LOCK 0
#define CONFIG_IP_LOST_TIMER_INTERVAL 120
#define CONFIG_SPIFFS_META_LENGTH 4
#define CONFIG_ESP32_PANIC_PRINT_REBOOT 1
#define CONFIG_MBEDTLS_ECP_DP_BP384R1_ENABLED 1
#define CONFIG_MBEDTLS_ECP_DP_SECP256K1_ENABLED 1
#define CONFIG_CONSOLE_UART_BAUDRATE 115200
#define CONFIG_LWIP_MAX_SOCKETS 10
#define CONFIG_LWIP_NETIF_LOOPBACK 1
#define CONFIG_EMAC_TASK_PRIORITY 20
#define CONFIG_TIMER_TASK_STACK_DEPTH 2048
#define CONFIG_TCP_MSS 1436
#define CONFIG_MBEDTLS_ECP_DP_CURVE25519_ENABLED 1
#define CONFIG_FATFS_CODEPAGE 437
#define CONFIG_ULP_COPROC_RESERVE_MEM 512
#define CONFIG_LWIP_MAX_UDP_PCBS 16
#define CONFIG_ESPTOOLPY_BAUD 115200
#define CONFIG_INT_WDT_CHECK_CPU1 1
#define CONFIG_ADC_CAL_LUT_ENABLE 1
#define CONFIG_FLASHMODE_DIO 1
#define CONFIG_ESPTOOLPY_AFTER_RESET 1
#define CONFIG_OPTIMIZATION_ASSERTIONS_ENABLED 1
#define CONFIG_LWIP_DHCPS_MAX_STATION_NUM 8
#define CONFIG_TOOLPREFIX "xtensa-esp32-elf-"
#define CONFIG_MBEDTLS_ECP_C 1
#define CONFIG_FREERTOS_IDLE_TASK_STACKSIZE 1536
#define CONFIG_MBEDTLS_RC4_DISABLED 1
#define CONFIG_CONSOLE_UART_NUM 0
#define CONFIG_ESP32_APPTRACE_LOCK_ENABLE 1
#define CONFIG_ESP32_RTC_CLOCK_SOURCE_INTERNAL_RC 1
#define CONFIG_ESPTOOLPY_BAUD_115200B 1
#define CONFIG_TCP_OVERSIZE_MSS 1
#define CONFIG_FOUR_UNIVERSAL_MAC_ADDRESS 1
#define CONFIG_CONSOLE_UART_DEFAULT 1
#define CONFIG_MBEDTLS_SSL_MAX_CONTENT_LEN 16384
#define CONFIG_NUMBER_OF_UNIVERSAL_MAC_ADDRESS 4
#define CONFIG_ESPTOOLPY_FLASHSIZE_DETECT 1
#define CONFIG_PARTITION_TABLE_CUSTOM 1
#define CONFIG_TIMER_TASK_STACK_SIZE 3584
#define CONFIG_ESP32_ENABLE_COREDUMP_TO_NONE 1
#define CONFIG_MBEDTLS_X509_CRL_PARSE_C 1
#define CONFIG_LWIP_DHCPS_LEASE_UNIT 60
#define CONFIG_SPIFFS_USE_MAGIC 1
#define CONFIG_TCPIP_TASK_STACK_SIZE 2048
#define CONFIG_TASK_WDT 1
#define CONFIG_MAIN_TASK_STACK_SIZE 3584
#define CONFIG_SPIFFS_PAGE_CHECK 1
#define CONFIG_ESP32_WIFI_TASK_PINNED_TO_CORE_0 1
#define CONFIG_LWIP_MAX_ACTIVE_TCP 16
#define CONFIG_TASK_WDT_TIMEOUT_S 5
#define CONFIG_INT_WDT_TIMEOUT_MS 300
#define CONFIG_ESPTOOLPY_FLASHMODE "dio"
#define CONFIG_NEWLIB_STDIN_LINE_ENDING_CR 1
#define CONFIG_MBEDTLS_KEY_EXCHANGE_ECDH_RSA 1
#define CONFIG_ESPTOOLPY_BEFORE "default_reset"
#define CONFIG_ADC2_DISABLE_DAC 1
#define CONFIG_LOG_DEFAULT_LEVEL 3
#define CONFIG_FREERTOS_ASSERT_ON_UNTESTED_FUNCTION 1
#define CONFIG_TIMER_QUEUE_LENGTH 10
#define CONFIG_SUPPRESS_SELECT_DEBUG_OUTPUT 1
#define CONFIG_MAKE_WARN_UNDEFINED_VARIABLES 1
#define CONFIG_FATFS_TIMEOUT_MS 10000
#define CONFIG_ESP32_WIFI_DYNAMIC_RX_BUFFER_NUM 32
#define CONFIG_ESP_HTTP_CLIENT_ENABLE_HTTPS 1
#define CONFIG_MBEDTLS_CCM_C 1
#define CONFIG_SPI_MASTER_ISR_IN_IRAM 1
#define CONFIG_ESP32_PHY_MAX_WIFI_TX_POWER 20
#define CONFIG_ESP32_RTC_CLK_CAL_CYCLES 0
#define CONFIG_ESP32_WIFI_TX_BA_WIN 6
#define CONFIG_ESP32_WIFI_NVS_ENABLED 1
#define CONFIG_ULP_COPROC_ENABLED 1
#define CONFIG_MBEDTLS_ECP_DP_SECP224R1_ENABLED 1
#define CONFIG_LIBSODIUM_USE_MBEDTLS_SHA 1
#define CONFIG_DMA_RX_BUF_NUM 10
#define CONFIG_MBEDTLS_ECP_DP_SECP384R1_ENABLED 1
#define CONFIG_TCP_SYNMAXRTX 6
#define CONFIG_MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA 1
#define CONFIG_PYTHON "python"
#define CONFIG_MBEDTLS_ECP_NIST_OPTIM 1
#define CONFIG_ESP32_TIME_SYSCALL_USE_RTC_FRC1 1
#define CONFIG_ESPTOOLPY_COMPRESSED 1
#define CONFIG_PARTITION_TABLE_FILENAME "partitions.csv"
#define CONFIG_TCP_SND_BUF_DEFAULT 5744
#define CONFIG_LWIP_DHCP_MAX_NTP_SERVERS 1
#define CONFIG_TCP_MSL 60000
#define CONFIG_MBEDTLS_SSL_PROTO_TLS1_1 1
#define CONFIG_LWIP_SO_REUSE_RXTOALL 1
#define CONFIG_ESP32_WIFI_RX_BA_WIN 6
#define CONFIG_MBEDTLS_X509_CSR_PARSE_C 1
#define CONFIG_SPIFFS_USE_MTIME 1
#define CONFIG_MBEDTLS_KEY_EXCHANGE_ECDHE_RSA 1
#define CONFIG_LWIP_DHCP_DOES_ARP_CHECK 1
#define CONFIG_SYSTEM_EVENT_TASK_STACK_SIZE 2304
#define CONFIG_BOOTLOADER_VDDSDIO_BOOST_1_9V 1
#define CONFIG_ESP32_DEEP_SLEEP_WAKEUP_DELAY 2000
#define CONFIG_BROWNOUT_DET_LVL 0
#define CONFIG_MBEDTLS_PEM_PARSE_C 1
#define CONFIG_SPIFFS_GC_MAX_RUNS 10
#define CONFIG_ESP32_APPTRACE_DEST_NONE 1
#define CONFIG_MBEDTLS_SSL_PROTO_TLS1_2 1
#define CONFIG_MBEDTLS_KEY_EXCHANGE_DHE_RSA 1
#define CONFIG_ESP32_WIFI_DYNAMIC_TX_BUFFER_NUM 32
#define CONFIG_MBEDTLS_ECP_DP_BP256R1_ENABLED 1
#define CONFIG_MBEDTLS_ECP_DP_SECP224K1_ENABLED 1
#define CONFIG_TASK_WDT_CHECK_IDLE_TASK_CPU1 1
#define CONFIG_ESP32_DEFAULT_CPU_FREQ_MHZ 80
#define CONFIG_MBEDTLS_HARDWARE_AES 1
#define CONFIG_FREERTOS_HZ 100
#define CONFIG_LOG_COLORS 1
#define CONFIG_ESP32_PHY_CALIBRATION_AND_DATA_STORAGE 1
#define CONFIG_STACK_CHECK_NONE 1
#define CONFIG_ADC_CAL_EFUSE_TP_ENABLE 1
#define CONFIG_FREERTOS_ASSERT_FAIL_ABORT 1
#define CONFIG_BROWNOUT_DET 1
#define CONFIG_ESP32_XTAL_FREQ 40
#define CONFIG_MONITOR_BAUD_115200B 1
#define CONFIG_LOG_BOOTLOADER_LEVEL 3
#define CONFIG_MBEDTLS_TLS_ENABLED 1
#define CONFIG_LWIP_MAX_RAW_PCBS 16
#define CONFIG_MBEDTLS_SSL_SESSION_TICKETS 1
#define CONFIG_SPIFFS_MAX_PARTITIONS 3
#define CONFIG_ESP_ERR_TO_NAME_LOOKUP 1
#define CONFIG_MBEDTLS_SSL_RENEGOTIATION 1
#define CONFIG_ESPTOOLPY_BEFORE_RESET 1
#define CONFIG_ENABLE_TOUCH_WAKEUP 1
#define CONFIG_ESPTOOLPY_BAUD_OTHER_VAL 115200
#define CONFIG_SPIFFS_OBJ_NAME_LEN 32
#define CONFIG_ESP32_PTHREAD_TASK_PRIO_DEFAULT 5
#define CONFIG_PARTITION_TABLE_MD5 1
#define CONFIG_TCPIP_RECVMBOX_SIZE 32
#define CONFIG_TCP_MAXRTX 12
#define CONFIG_ESPTOOLPY_AFTER "hard_reset"
#define CONFIG_LWIP_SO_REUSE 1
#define CONFIG_ESP32_XTAL_FREQ_40 1
#define CONFIG_DMA_TX_BUF_NUM 10
#define CONFIG_LWIP_MAX_LISTENING_TCP 16
#define CONFIG_FREERTOS_INTERRUPT_BACKTRACE 1
#define CONFIG_WL_SECTOR_SIZE 4096
#define CONFIG_ESP32_DEBUG_OCDAWARE 1
#define CONFIG_TIMER_TASK_PRIORITY 1
#define CONFIG_MBEDTLS_TLS_CLIENT 1
#define CONFIG_MBEDTLS_ECP_DP_SECP256R1_ENABLED 1
#define CONFIG_MONITOR_BAUD 115200
#define CONFIG_ESP32_DEBUG_STUBS_ENABLE 1
#define CONFIG_FREERTOS_CORETIMER_0 1
#define CONFIG_PARTITION_TABLE_CUSTOM_FILENAME "partitions.csv"
#define CONFIG_MBEDTLS_HAVE_TIME 1
#define CONFIG_FREERTOS_CHECK_STACKOVERFLOW_CANARY 1
#define CONFIG_TCP_QUEUE_OOSEQ 1
#define CONFIG_ADC_CAL_EFUSE_VREF_ENABLE 1
#define CONFIG_MBEDTLS_TLS_SERVER 1
#define CONFIG_MBEDTLS_TLS_SERVER_AND_CLIENT 1
#define CONFIG_FREERTOS_ISR_STACKSIZE 1536
#define CONFIG_OPENSSL_ASSERT_DO_NOTHING 1
#define CONFIG_WL_SECTOR_SIZE_4096 1
#define CONFIG_OPTIMIZATION_LEVEL_DEBUG 1
#define CONFIG_ESP32_WIFI_AMPDU_TX_ENABLED 1
#define CONFIG_MBEDTLS_ECP_DP_SECP192R1_ENABLED 1
#define CONFIG_MBEDTLS_ECP_DP_BP512R1_ENABLED 1
#define CONFIG_MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA 1
#define CONFIG_SYSTEM_EVENT_QUEUE_SIZE 32
#define CONFIG_ESP32_WIFI_TX_BUFFER_TYPE 1
#define CONFIG_ESP32_WIFI_AMPDU_RX_ENABLED 1
#define CONFIG_LWIP_LOOPBACK_MAX_PBUFS 8
#define CONFIG_ESP32_DEFAULT_CPU_FREQ_80 1
#define CONFIG_SPI_FLASH_ROM_DRIVER_PATCH 1
#define CONFIG_SPIFFS_PAGE_SIZE 256
#define CONFIG_MBEDTLS_ECP_DP_SECP192K1_ENABLED 1
#define CONFIG_TASK_WDT_CHECK_IDLE_TASK_CPU0 1
#define CONFIG_ESP32_PTHREAD_TASK_STACK_SIZE_DEFAULT 3072
#define CONFIG_MONITOR_BAUD_OTHER_VAL 115200
#define CONFIG_NEWLIB_STDOUT_LINE_ENDING_CRLF 1
#define CONFIG_ESPTOOLPY_PORT "com3"
#define CONFIG_SPI_FLASH_WRITING_DANGEROUS_REGIONS_ABORTS 1

[KonstantinKondrashov]

Hi @infotrino! I think you have this error due to the error division on zero. We fix it soon.
Error here: https://github.com/espressif/esp-idf/blob/master/components/esp32/clk.c#L131