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Merge branch 'bugfix/p4_ulp_wakeup' into 'master'

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fix(ulp): fixed lp-core not booting during sleep

Closes IDF-9407

See merge request espressif/esp-idf!30296
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Marius Vikhammer
2024-04-18 16:23:16 +08:00
parent 2839f80010 1fa59c442b
commit 842b6a1dc4
11 changed files with 36 additions and 23 deletions
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docs/en/api-reference/system/ulp-lp-core.rst
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@@ -165,9 +165,9 @@ To enhance the capabilities of the ULP LP-Core coprocessor, it has access to per
ULP LP-Core ROM
---------------
The ULP LP-Core ROM is a small pre-built piece of code located in LP-ROM, which is not modifiable by users. Similar to the bootloader ROM code ran by the main CPU, this code is executed when the ULP LP-Core coprocessor is started. The ROM code initializes the ULP LP-Core coprocessor and then jumps to the user program. The ROM code is responsible for initializing the LP UART and printing boot messages.
The ULP LP-Core ROM is a small pre-built piece of code located in LP-ROM, which is not modifiable by users. Similar to the bootloader ROM code ran by the main CPU, this code is executed when the ULP LP-Core coprocessor is started. The ROM code initializes the ULP LP-Core coprocessor and then jumps to the user program. The ROM code also prints boot messages if the LP UART has been initialized.
The ROM code is not executed if :cpp:member:`ulp_lp_core_cfg_t::skip_lp_rom_boot` is set to true. This is useful when you need the ULP to wake-up as quickly as possible and the extra overhead of initializing UART and printing is unwanted.
The ROM code is not executed if :cpp:member:`ulp_lp_core_cfg_t::skip_lp_rom_boot` is set to true. This is useful when you need the ULP to wake-up as quickly as possible and the extra overhead of initializing and printing is unwanted.
In addition to the boot-up code mentioned above the ROM code also provides the following functions and interfaces: