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fix(ulp): fixes potential race-condition for lp-timer wakeup with lp-core

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Reconfigure wakeup time before enabling the wakeup source to avoid
a wakeup from potentially stale values.

Closes https://github.com/espressif/esp-idf/issues/17009
This commit is contained in:
Marius Vikhammer
2026-06-30 14:07:09 +08:00
committed by BOT
parent b40a7e3e35
commit d00a3c1aa8
1 changed files with 7 additions and 7 deletions
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components/ulp/lp_core/lp_core.c
+7 -7
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@@ -161,16 +161,9 @@ esp_err_t ulp_lp_core_run(ulp_lp_core_cfg_t* cfg)
otherwise configured HW breakpoints and dcsr.ebreak* bits will be missed */
lp_core_ll_rst_at_sleep_enable(!(CONFIG_ULP_NORESET_UNDER_DEBUG && esp_cpu_dbgr_is_attached()));
/* Set wake-up sources */
lp_core_ll_set_wakeup_source(lp_core_get_wakeup_source_hw_flags(cfg->wakeup_source));
/* Enable JTAG debugging */
lp_core_ll_debug_module_enable(true);
if (cfg->wakeup_source & ULP_LP_CORE_WAKEUP_SOURCE_HP_CPU) {
lp_core_ll_hp_wake_lp();
}
#if SOC_ULP_LP_UART_SUPPORTED
if (cfg->wakeup_source & ULP_LP_CORE_WAKEUP_SOURCE_LP_UART) {
lp_core_ll_enable_lp_uart_wakeup(true);
@@ -192,6 +185,13 @@ esp_err_t ulp_lp_core_run(ulp_lp_core_cfg_t* cfg)
}
#endif
/* Set wake-up sources */
lp_core_ll_set_wakeup_source(lp_core_get_wakeup_source_hw_flags(cfg->wakeup_source));
if (cfg->wakeup_source & ULP_LP_CORE_WAKEUP_SOURCE_HP_CPU) {
lp_core_ll_hp_wake_lp();
}
return ESP_OK;
}