Function esp_idf_hal::sys::gptimer_start

pub unsafe extern "C" fn gptimer_start(timer: *mut gptimer_t) -> i32

@brief Start GPTimer (internal counter starts counting)

@note This function will transit the timer state from “enable” to “run”. @note This function is allowed to run within ISR context @note If CONFIG_GPTIMER_CTRL_FUNC_IN_IRAM is enabled, this function will be placed in the IRAM by linker, makes it possible to execute even when the Flash Cache is disabled.

@param[in] timer Timer handle created by gptimer_new_timer @return - ESP_OK: Start GPTimer successfully - ESP_ERR_INVALID_ARG: Start GPTimer failed because of invalid argument - ESP_ERR_INVALID_STATE: Start GPTimer failed because the timer is not enabled or is already in running - ESP_FAIL: Start GPTimer failed because of other error