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Diffstat (limited to 'tinyusb/examples/device/hid_composite_freertos/src/main.c')
| -rwxr-xr-x | tinyusb/examples/device/hid_composite_freertos/src/main.c | 355 |
1 files changed, 355 insertions, 0 deletions
diff --git a/tinyusb/examples/device/hid_composite_freertos/src/main.c b/tinyusb/examples/device/hid_composite_freertos/src/main.c new file mode 100755 index 00000000..9c9830e3 --- /dev/null +++ b/tinyusb/examples/device/hid_composite_freertos/src/main.c @@ -0,0 +1,355 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2019 Ha Thach (tinyusb.org) + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + */ + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> + +#include "FreeRTOS.h" +#include "task.h" +#include "timers.h" +#include "queue.h" +#include "semphr.h" + +#include "bsp/board.h" +#include "tusb.h" + +#include "usb_descriptors.h" + +//--------------------------------------------------------------------+ +// MACRO CONSTANT TYPEDEF PROTYPES +//--------------------------------------------------------------------+ + +/* Blink pattern + * - 250 ms : device not mounted + * - 1000 ms : device mounted + * - 2500 ms : device is suspended + */ +enum { + BLINK_NOT_MOUNTED = 250, + BLINK_MOUNTED = 1000, + BLINK_SUSPENDED = 2500, +}; + +// static timer +StaticTimer_t blinky_tmdef; +TimerHandle_t blinky_tm; + +// static task for usbd +#if CFG_TUSB_DEBUG + #define USBD_STACK_SIZE (3*configMINIMAL_STACK_SIZE) +#else + #define USBD_STACK_SIZE (3*configMINIMAL_STACK_SIZE/2) +#endif + +StackType_t usb_device_stack[USBD_STACK_SIZE]; +StaticTask_t usb_device_taskdef; + +// static task for hid +#define HID_STACK_SZIE configMINIMAL_STACK_SIZE +StackType_t hid_stack[HID_STACK_SZIE]; +StaticTask_t hid_taskdef; + + +void led_blinky_cb(TimerHandle_t xTimer); +void usb_device_task(void* param); +void hid_task(void* params); + +//--------------------------------------------------------------------+ +// Main +//--------------------------------------------------------------------+ + +int main(void) +{ + board_init(); + + // soft timer for blinky + blinky_tm = xTimerCreateStatic(NULL, pdMS_TO_TICKS(BLINK_NOT_MOUNTED), true, NULL, led_blinky_cb, &blinky_tmdef); + xTimerStart(blinky_tm, 0); + + // Create a task for tinyusb device stack + (void) xTaskCreateStatic( usb_device_task, "usbd", USBD_STACK_SIZE, NULL, configMAX_PRIORITIES-1, usb_device_stack, &usb_device_taskdef); + + // Create HID task + (void) xTaskCreateStatic( hid_task, "hid", HID_STACK_SZIE, NULL, configMAX_PRIORITIES-2, hid_stack, &hid_taskdef); + + // skip starting scheduler (and return) for ESP32-S2 or ESP32-S3 +#if CFG_TUSB_MCU != OPT_MCU_ESP32S2 && CFG_TUSB_MCU != OPT_MCU_ESP32S3 + vTaskStartScheduler(); +#endif + + return 0; +} + +#if CFG_TUSB_MCU == OPT_MCU_ESP32S2 || CFG_TUSB_MCU == OPT_MCU_ESP32S3 +void app_main(void) +{ + main(); +} +#endif + +// USB Device Driver task +// This top level thread process all usb events and invoke callbacks +void usb_device_task(void* param) +{ + (void) param; + + // This should be called after scheduler/kernel is started. + // Otherwise it could cause kernel issue since USB IRQ handler does use RTOS queue API. + tusb_init(); + + // RTOS forever loop + while (1) + { + // tinyusb device task + tud_task(); + } +} + +//--------------------------------------------------------------------+ +// Device callbacks +//--------------------------------------------------------------------+ + +// Invoked when device is mounted +void tud_mount_cb(void) +{ + xTimerChangePeriod(blinky_tm, pdMS_TO_TICKS(BLINK_MOUNTED), 0); +} + +// Invoked when device is unmounted +void tud_umount_cb(void) +{ + xTimerChangePeriod(blinky_tm, pdMS_TO_TICKS(BLINK_NOT_MOUNTED), 0); +} + +// Invoked when usb bus is suspended +// remote_wakeup_en : if host allow us to perform remote wakeup +// Within 7ms, device must draw an average of current less than 2.5 mA from bus +void tud_suspend_cb(bool remote_wakeup_en) +{ + (void) remote_wakeup_en; + xTimerChangePeriod(blinky_tm, pdMS_TO_TICKS(BLINK_SUSPENDED), 0); +} + +// Invoked when usb bus is resumed +void tud_resume_cb(void) +{ + xTimerChangePeriod(blinky_tm, pdMS_TO_TICKS(BLINK_MOUNTED), 0); +} + +//--------------------------------------------------------------------+ +// USB HID +//--------------------------------------------------------------------+ + +static void send_hid_report(uint8_t report_id, uint32_t btn) +{ + // skip if hid is not ready yet + if ( !tud_hid_ready() ) return; + + switch(report_id) + { + case REPORT_ID_KEYBOARD: + { + // use to avoid send multiple consecutive zero report for keyboard + static bool has_keyboard_key = false; + + if ( btn ) + { + uint8_t keycode[6] = { 0 }; + keycode[0] = HID_KEY_A; + + tud_hid_keyboard_report(REPORT_ID_KEYBOARD, 0, keycode); + has_keyboard_key = true; + }else + { + // send empty key report if previously has key pressed + if (has_keyboard_key) tud_hid_keyboard_report(REPORT_ID_KEYBOARD, 0, NULL); + has_keyboard_key = false; + } + } + break; + + case REPORT_ID_MOUSE: + { + int8_t const delta = 5; + + // no button, right + down, no scroll, no pan + tud_hid_mouse_report(REPORT_ID_MOUSE, 0x00, delta, delta, 0, 0); + } + break; + + case REPORT_ID_CONSUMER_CONTROL: + { + // use to avoid send multiple consecutive zero report + static bool has_consumer_key = false; + + if ( btn ) + { + // volume down + uint16_t volume_down = HID_USAGE_CONSUMER_VOLUME_DECREMENT; + tud_hid_report(REPORT_ID_CONSUMER_CONTROL, &volume_down, 2); + has_consumer_key = true; + }else + { + // send empty key report (release key) if previously has key pressed + uint16_t empty_key = 0; + if (has_consumer_key) tud_hid_report(REPORT_ID_CONSUMER_CONTROL, &empty_key, 2); + has_consumer_key = false; + } + } + break; + + case REPORT_ID_GAMEPAD: + { + // use to avoid send multiple consecutive zero report for keyboard + static bool has_gamepad_key = false; + + hid_gamepad_report_t report = + { + .x = 0, .y = 0, .z = 0, .rz = 0, .rx = 0, .ry = 0, + .hat = 0, .buttons = 0 + }; + + if ( btn ) + { + report.hat = GAMEPAD_HAT_UP; + report.buttons = GAMEPAD_BUTTON_A; + tud_hid_report(REPORT_ID_GAMEPAD, &report, sizeof(report)); + + has_gamepad_key = true; + }else + { + report.hat = GAMEPAD_HAT_CENTERED; + report.buttons = 0; + if (has_gamepad_key) tud_hid_report(REPORT_ID_GAMEPAD, &report, sizeof(report)); + has_gamepad_key = false; + } + } + break; + + default: break; + } +} + +void hid_task(void* param) +{ + (void) param; + + while(1) + { + // Poll every 10ms + vTaskDelay(pdMS_TO_TICKS(10)); + + uint32_t const btn = board_button_read(); + + // Remote wakeup + if ( tud_suspended() && btn ) + { + // Wake up host if we are in suspend mode + // and REMOTE_WAKEUP feature is enabled by host + tud_remote_wakeup(); + } + else + { + // Send the 1st of report chain, the rest will be sent by tud_hid_report_complete_cb() + send_hid_report(REPORT_ID_KEYBOARD, btn); + } + } +} + +// Invoked when sent REPORT successfully to host +// Application can use this to send the next report +// Note: For composite reports, report[0] is report ID +void tud_hid_report_complete_cb(uint8_t instance, uint8_t const* report, uint8_t len) +{ + (void) instance; + (void) len; + + uint8_t next_report_id = report[0] + 1; + + if (next_report_id < REPORT_ID_COUNT) + { + send_hid_report(next_report_id, board_button_read()); + } +} + + +// Invoked when received GET_REPORT control request +// Application must fill buffer report's content and return its length. +// Return zero will cause the stack to STALL request +uint16_t tud_hid_get_report_cb(uint8_t instance, uint8_t report_id, hid_report_type_t report_type, uint8_t* buffer, uint16_t reqlen) +{ + // TODO not Implemented + (void) instance; + (void) report_id; + (void) report_type; + (void) buffer; + (void) reqlen; + + return 0; +} + +// Invoked when received SET_REPORT control request or +// received data on OUT endpoint ( Report ID = 0, Type = 0 ) +void tud_hid_set_report_cb(uint8_t instance, uint8_t report_id, hid_report_type_t report_type, uint8_t const* buffer, uint16_t bufsize) +{ + (void) instance; + + if (report_type == HID_REPORT_TYPE_OUTPUT) + { + // Set keyboard LED e.g Capslock, Numlock etc... + if (report_id == REPORT_ID_KEYBOARD) + { + // bufsize should be (at least) 1 + if ( bufsize < 1 ) return; + + uint8_t const kbd_leds = buffer[0]; + + if (kbd_leds & KEYBOARD_LED_CAPSLOCK) + { + // Capslock On: disable blink, turn led on + xTimerStop(blinky_tm, portMAX_DELAY); + board_led_write(true); + }else + { + // Caplocks Off: back to normal blink + board_led_write(false); + xTimerStart(blinky_tm, portMAX_DELAY); + } + } + } +} + +//--------------------------------------------------------------------+ +// BLINKING TASK +//--------------------------------------------------------------------+ +void led_blinky_cb(TimerHandle_t xTimer) +{ + (void) xTimer; + static bool led_state = false; + + board_led_write(led_state); + led_state = 1 - led_state; // toggle +} |