78 lines
2.6 KiB
C
78 lines
2.6 KiB
C
/*
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* SPDX-FileCopyrightText: 2020-2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "sdkconfig.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/event_groups.h"
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#include "esp_log.h"
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#include "esp_check.h"
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#include "tinyusb.h"
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#include "tusb_tasks.h"
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const static char *TAG = "tusb_tsk";
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static TaskHandle_t s_tusb_tskh;
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#if CONFIG_TINYUSB_INIT_IN_DEFAULT_TASK
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const static int INIT_OK = BIT0;
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const static int INIT_FAILED = BIT1;
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#endif
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/**
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* @brief This top level thread processes all usb events and invokes callbacks
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*/
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static void tusb_device_task(void *arg)
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{
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ESP_LOGD(TAG, "tinyusb task started");
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#if CONFIG_TINYUSB_INIT_IN_DEFAULT_TASK
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EventGroupHandle_t *init_flags = arg;
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if (!tusb_init()) {
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ESP_LOGI(TAG, "Init TinyUSB stack failed");
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xEventGroupSetBits(*init_flags, INIT_FAILED);
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vTaskDelete(NULL);
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}
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ESP_LOGD(TAG, "tinyusb task has been initialized");
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xEventGroupSetBits(*init_flags, INIT_OK);
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#endif // CONFIG_TINYUSB_INIT_IN_DEFAULT_TASK
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while (1) { // RTOS forever loop
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tud_task();
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}
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}
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esp_err_t tusb_run_task(void)
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{
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// This function is not garanteed to be thread safe, if invoked multiple times without calling `tusb_stop_task`, will cause memory leak
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// doing a sanity check anyway
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ESP_RETURN_ON_FALSE(!s_tusb_tskh, ESP_ERR_INVALID_STATE, TAG, "TinyUSB main task already started");
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void *task_arg = NULL;
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#if CONFIG_TINYUSB_INIT_IN_DEFAULT_TASK
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// need to synchronize to potentially report issue if init failed
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EventGroupHandle_t init_flags = xEventGroupCreate();
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ESP_RETURN_ON_FALSE(init_flags, ESP_ERR_NO_MEM, TAG, "Failed to allocate task sync flags");
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task_arg = &init_flags;
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#endif
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// Create a task for tinyusb device stack:
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xTaskCreatePinnedToCore(tusb_device_task, "TinyUSB", CONFIG_TINYUSB_TASK_STACK_SIZE, task_arg, CONFIG_TINYUSB_TASK_PRIORITY, &s_tusb_tskh, CONFIG_TINYUSB_TASK_AFFINITY);
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ESP_RETURN_ON_FALSE(s_tusb_tskh, ESP_FAIL, TAG, "create TinyUSB main task failed");
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#if CONFIG_TINYUSB_INIT_IN_DEFAULT_TASK
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// wait until tusb initialization has completed
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EventBits_t bits = xEventGroupWaitBits(init_flags, INIT_OK | INIT_FAILED, pdFALSE, pdFALSE, portMAX_DELAY);
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vEventGroupDelete(init_flags);
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ESP_RETURN_ON_FALSE(bits & INIT_OK, ESP_FAIL, TAG, "Init TinyUSB stack failed");
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#endif
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return ESP_OK;
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}
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esp_err_t tusb_stop_task(void)
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{
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ESP_RETURN_ON_FALSE(s_tusb_tskh, ESP_ERR_INVALID_STATE, TAG, "TinyUSB main task not started yet");
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vTaskDelete(s_tusb_tskh);
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s_tusb_tskh = NULL;
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return ESP_OK;
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}
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