valconomy/firmware/main/usb.c

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#include <inttypes.h>
#include "esp_log.h"
#include "tinyusb.h"
#include "class/hid/hid_device.h"
#include "common.h"
#include "usb.h"
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#include "lcd.h"
#include "ui.h"
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#define TUSB_DESC_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_HID_INOUT_DESC_LEN)
static const char *TAG = "valconomy-usb";
// See https://github.com/hathach/tinyusb/blob/cb22301f91f0465a5578be35d9be284657ddd31d/src/common/tusb_types.h#L331
const tusb_desc_device_t val_usb_dev_descriptor = {
.bLength = sizeof(tusb_desc_device_t),
.bDescriptorType = TUSB_DESC_DEVICE,
// BCD-coded USB version (?)
.bcdUSB = 0x0200,
.bDeviceClass = 0x00,
.bDeviceSubClass = 0x00,
.bDeviceProtocol = 0x00,
.bMaxPacketSize0 = CFG_TUD_ENDPOINT0_SIZE,
.idVendor = 0x6969,
.idProduct = 0x0004,
// BCD-coded device version (0.1)
.bcdDevice = 0x0010,
// Indices of strings
.iManufacturer = 0x01,
.iProduct = 0x02,
.iSerialNumber = 0x03,
.bNumConfigurations = 0x01,
};
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const char* val_usb_string_descriptor[5] = {
// 0: supported language is English (0x0409)
(char[]){0x09, 0x04},
// 1: Manufacturer
"/dev/player0",
// 2: Product
"Valorant Economy Helper",
// 3: Serials, should use chip ID
val_dev_serial,
// 4: HID
"Valconomy HID interface",
};
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const uint8_t val_hid_report_descriptor[] = {
TUD_HID_REPORT_DESC_GENERIC_INOUT(USB_EP_BUFSIZE),
};
const uint8_t val_hid_conf_descriptor[] = {
// Configuration number, interface count, string index, total length, attribute, power in mA
TUD_CONFIG_DESCRIPTOR(1, 1, 0, TUSB_DESC_TOTAL_LEN, TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP, 100),
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// HID requires an IN endpoint even if we don't care about it
// Interface number, string index, protocol, report descriptor len, EP Out & In address, size & polling interval (ms)
// 0x80 in endpoint address indicates IN
TUD_HID_INOUT_DESCRIPTOR(0, 4, HID_ITF_PROTOCOL_NONE, sizeof(val_hid_report_descriptor), EPNUM_HID, 0x80 | EPNUM_HID, USB_EP_BUFSIZE, 100)
};
// TinyUSB callbacks
// Invoked when received GET HID REPORT DESCRIPTOR request
// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete
uint8_t const *tud_hid_descriptor_report_cb(uint8_t instance) {
// We use only one interface and one HID report descriptor, so we can ignore parameter 'instance'
return val_hid_report_descriptor;
}
// 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* buf, uint16_t reqlen) {
(void) instance;
if (report_id != 0 || reqlen < 1) {
return 0;
}
// ESP_LOGI(TAG, "Got %hu bytes report %hhu", reqlen, report_id);
// for (uint16_t i = 0; i < reqlen; i++) {
// ESP_LOGI(TAG, "b: %02hhx", buf[i]);
// }
buf[0] = val_ui_state_ready();
return 1;
}
// 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* buf, uint16_t bufsize) {
(void) instance;
assert(report_id == 0 && report_type == HID_REPORT_TYPE_OUTPUT && bufsize >= 1);
if (!val_lvgl_lock(-1)) {
ESP_LOGE(TAG, "Failed to grab LVGL lock");
return;
}
if (buf[0] > ST_GAME_GENERIC) {
ESP_LOGW(TAG, "Unknown state %hhu", buf[0]);
goto ret;
}
if (!val_ui_state_ready()) {
goto ret;
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}
switch (buf[0]) {
case ST_NONE:
val_ui_none();
break;
case ST_MENU:
if (bufsize < 2) {
ESP_LOGE(TAG, "Invalid ST_MENU command");
goto ret;
}
val_ui_menu((bool)buf[1]);
break;
case ST_IDLE:
val_ui_idle();
break;
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case ST_QUEUE_START:
if (bufsize < 2) {
ESP_LOGE(TAG, "Invalid ST_QUEUE_START command");
goto ret;
}
val_ui_queue_start((bool)buf[1]);
break;
case ST_MATCH_FOUND:
if (bufsize < 2) {
ESP_LOGE(TAG, "Invalid ST_MATCH_FOUND command");
goto ret;
}
val_ui_match_found((bool)buf[1]);
break;
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case ST_PREGAME:
if (bufsize < 2) {
ESP_LOGE(TAG, "Invalid ST_PREGAME command");
goto ret;
}
val_ui_pregame((bool)buf[1]);
break;
case ST_GAME_GENERIC:
if (bufsize < 2 || buf[1] > VAL_EXT_GAMEMODES_SIZE) {
ESP_LOGE(TAG, "Invalid ST_PREGAME command");
goto ret;
}
val_ui_game_generic(val_ext_gamemodes[buf[1]]);
break;
}
ret:
val_lvgl_unlock();
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}
void val_usb_init(void) {
ESP_LOGI(TAG, "Initializing USB");
const tinyusb_config_t cfg = {
.device_descriptor = &val_usb_dev_descriptor,
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.string_descriptor = val_usb_string_descriptor,
.string_descriptor_count = sizeof(val_usb_string_descriptor) / sizeof(char *),
.external_phy = false,
#if (TUD_OPT_HIGH_SPEED)
// HID configuration descriptor for full-speed and high-speed are the same
.fs_configuration_descriptor = val_hid_conf_descriptor,
.hs_configuration_descriptor = val_hid_conf_descriptor,
.qualifier_descriptor = NULL,
#else
.configuration_descriptor = val_hid_conf_descriptor,
#endif // TUD_OPT_HIGH_SPEED
};
ESP_ERROR_CHECK(tinyusb_driver_install(&cfg));
}