68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
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#include "tusb.h"
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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 = 0x0200,
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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 = 0xCafe, // Your Vendor ID
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.idProduct = 0x4001, // Your Product ID
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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 (MIDI)
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enum { ITF_NUM_MIDI = 0, ITF_NUM_MIDI_STREAMING, ITF_NUM_TOTAL };
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#define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_MIDI_DESC_LEN)
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#define EPNUM_MIDI_IN 0x01
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#define EPNUM_MIDI_OUT 0x01
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uint8_t const desc_configuration[] = {
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TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, 0x00, 100),
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TUD_MIDI_DESCRIPTOR(ITF_NUM_MIDI, 0, EPNUM_MIDI_OUT, (0x80 | EPNUM_MIDI_IN), 64)
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};
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uint8_t const * tud_descriptor_configuration_cb(uint8_t index) {
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return desc_configuration;
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}
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// String Descriptors (The source of your error)
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char const* string_desc_arr[] = {
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(const char[]) { 0x09, 0x04 }, // 0: Supported language is English
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"Raspberry Pi", // 1: Manufacturer
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"Go Volta Lights", // 2: Product
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"123456", // 3: Serial
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};
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static uint16_t _desc_str[32];
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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]))) return NULL;
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const char* str = string_desc_arr[index];
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chr_count = 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++) _desc_str[1+i] = str[i];
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}
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_desc_str[0] = (TUSB_DESC_STRING << 8 ) | (2*chr_count + 2);
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return _desc_str;
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}
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