76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
// usb_descriptors.c — USB MIDI device descriptors for TinyUSB.
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// Copy this file into your project and adjust VID, PID, and strings.
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#include "tusb.h"
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#define USB_VID 0xCafe
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#define USB_PID 0x4001
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#define USB_BCD 0x0200
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// Device descriptor
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tusb_desc_device_t const desc_device = {
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.bLength = sizeof(tusb_desc_device_t),
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.bDescriptorType = TUSB_DESC_DEVICE,
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.bcdUSB = USB_BCD,
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.bDeviceClass = 0x00,
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.bDeviceSubClass = 0x00,
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.bDeviceProtocol = 0x00,
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.bMaxPacketSize0 = CFG_TUD_ENDPOINT0_SIZE,
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.idVendor = USB_VID,
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.idProduct = USB_PID,
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.bcdDevice = 0x0100,
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.iManufacturer = 0x01,
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.iProduct = 0x02,
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.iSerialNumber = 0x03,
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.bNumConfigurations = 0x01
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};
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uint8_t const *tud_descriptor_device_cb(void) {
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return (uint8_t const *)&desc_device;
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}
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// Configuration descriptor (Audio + MIDI)
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#define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_MIDI_DESC_LEN)
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uint8_t const desc_configuration[] = {
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TUD_CONFIG_DESCRIPTOR(1, 2, 0, CONFIG_TOTAL_LEN,
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0x00, 100),
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TUD_MIDI_DESCRIPTOR(1, 0, 0x01, 0x81, 64)
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};
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uint8_t const *tud_descriptor_configuration_cb(uint8_t index) {
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(void)index;
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return desc_configuration;
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}
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// String descriptors
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static char const *string_desc_arr[] = {
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(const char[]){0x09, 0x04}, // 0: English
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"cs-midi", // 1: Manufacturer
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"MIDI Controller", // 2: Product
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"000001", // 3: Serial
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};
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static uint16_t _desc_str[32 + 1];
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uint16_t const *tud_descriptor_string_cb(uint8_t index, uint16_t langid) {
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(void)langid;
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uint8_t chr_count;
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if (index == 0) {
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memcpy(&_desc_str[1], string_desc_arr[0], 2);
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chr_count = 1;
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} else {
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if (index >= sizeof(string_desc_arr) / sizeof(string_desc_arr[0]))
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return NULL;
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const char *str = string_desc_arr[index];
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chr_count = (uint8_t)strlen(str);
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if (chr_count > 31) chr_count = 31;
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for (uint8_t i = 0; i < chr_count; i++)
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_desc_str[1 + i] = str[i];
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}
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_desc_str[0] = (uint16_t)((TUSB_DESC_STRING << 8) | (2 * chr_count + 2));
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return _desc_str;
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}
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