88 lines
2.8 KiB
C
88 lines
2.8 KiB
C
#include "tusb.h"
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#include "usb_descriptors.h"
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// String Descriptors
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char const* string_desc_arr[] = {
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(const char[]) { 0x09, 0x04 }, // 0: Supported language is English (0x0409)
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"Raspberry Pi", // 1: Manufacturer
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"Pico Keyboard", // 2: Product
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"123456", // 3: Serials
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};
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// HID Report Descriptor using standard TinyUSB macros
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uint8_t const desc_hid_report[] = {
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TUD_HID_REPORT_DESC_KEYBOARD( HID_REPORT_ID(REPORT_ID_KEYBOARD) )
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};
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// Invoked when received GET HID REPORT DESCRIPTOR
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uint8_t const * tud_hid_descriptor_report_cb(uint8_t instance) {
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(void) instance;
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return desc_hid_report;
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}
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// Configuration Descriptor
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#define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_HID_DESC_LEN)
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#define EPNUM_HID 0x81
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uint8_t const desc_configuration[] = {
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// Config number, interface count, string index, total length, attribute, power in mA
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TUD_CONFIG_DESCRIPTOR(1, 1, 0, CONFIG_TOTAL_LEN, TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP, 100),
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// Interface number, string index, boot protocol, report descriptor len, EP In address, size, polling interval
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TUD_HID_DESCRIPTOR(0, 0, HID_ITF_PROTOCOL_KEYBOARD, sizeof(desc_hid_report), EPNUM_HID, CFG_TUD_HID_EP_BUFSIZE, 10)
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};
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// Invoked when received GET CONFIGURATION DESCRIPTOR
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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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// 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 = 0x2E8A, // Raspberry Pi Vid
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.idProduct = 0x000a, // Pico SDK HID Product Id
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.bcdDevice = 0x0100,
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.iManufacturer = 1,
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.iProduct = 2,
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.iSerialNumber = 3,
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.bNumConfigurations = 1
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};
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// Invoked when received GET DEVICE DESCRIPTOR
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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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// Invoked when received GET STRING DESCRIPTOR request
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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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static uint16_t _desc_str[32];
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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++) {
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_desc_str[1+i] = str[i];
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}
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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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