Chapter 2. API Reference
# Connect to a running instance of OpenOCD target remote :3333 # Reset and halt the target
mon reset halt # Run to a specific point in ROM code, # where most of initialization is
complete. thb *0x40007d54 c # Load the application into RAM load # Run till app_main tb
app_main c
Execute this gdbinit file as follows:
xtensa-esp32-elf-gdb build/app-name.elf -x gdbinit
Example gdbinit files for other targets can be found in tools/test_apps/system/gdb_loadable_elf/
Recommended sdkconfig.defaults for building loadable ELF files is as follows. CON-
FIG_APP_BUILD_TYPE_ELF_RAM is required, other options help reduce application memory
footprint.
CONFIG_APP_BUILD_TYPE_ELF_RAM=y CONFIG_VFS_SUPPORT_TERMIOS=
CONFIG_NEWLIB_NANO_FORMAT=y CONFIG_ESP_SYSTEM_PANIC_PRINT_HALT=y
CONFIG_ESP_DEBUG_STUBS_ENABLE= CONFIG_ESP_ERR_TO_NAME_LOOKUP=
Available options:
• Default (binary application + 2nd stage bootloader)
(APP_BUILD_TYPE_APP_2NDBOOT)
• ELF file, loadable into RAM (EXPERIMENTAL)) (APP_BUILD_TYPE_ELF_RAM)
Application manager
Contains:
• CONFIG_APP_EXCLUDE_PROJECT_NAME_VAR
• CONFIG_APP_EXCLUDE_PROJECT_VER_VAR
• CONFIG_APP_PROJECT_VER_FROM_CONFIG
• CONFIG_APP_RETRIEVE_LEN_ELF_SHA
• CONFIG_APP_COMPILE_TIME_DATE
CONFIG_APP_COMPILE_TIME_DATE
Use time/date stamp for app
Found in: Application manager
If set, then the app will be built with the current time/date stamp. It is stored in the app description
structure. If not set, time/date stamp will be excluded from app image. This can be useful for getting
the same binary image files made from the same source, but at different times.
Default value:
• Yes (enabled)
CONFIG_APP_EXCLUDE_PROJECT_VER_VAR
Exclude PROJECT_VER from firmware image
Found in: Application manager
The PROJECT_VER variable from the build system will not affect the firmware image. This value will
not be contained in the esp_app_desc structure.
Default value:
• No (disabled)
Espressif Systems 1061
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