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esp_timer: allow querying the timer before esp_timer_init is called

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Ivan Grokhotkov
2021-07-20 03:31:25 +02:00
committed by Cao Sen Miao
parent 98d34e5f6d
commit b5fe84a250
6 changed files with 68 additions and 20 deletions
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11
components/esp_timer/private_include/esp_timer_impl.h
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@@ -28,9 +28,20 @@
#include "esp_err.h"
#include "esp_intr_alloc.h"
/**
* @brief Minimal initialization of platform specific layer of esp_timer
* This function can be called very early in startup process, after this call
* only esp_timer_get_time function can be used.
* esp_timer_impl_init has to be called after this function to initialize the
* rest of esp_timer implementation.
* @return ESP_OK
*/
esp_err_t esp_timer_impl_early_init(void);
/**
* @brief Initialize platform specific layer of esp_timer
* @param alarm_handler function to call on timer interrupt
* Before calling this function, esp_timer_impl_early_init must be called.
* @return ESP_OK, ESP_ERR_NO_MEM, or one of the errors from interrupt allocator
*/
esp_err_t esp_timer_impl_init(intr_handler_t alarm_handler);