107 lines
2.8 KiB
C
107 lines
2.8 KiB
C
#include "tusb.h"
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#include "class/audio/audio.h"
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#include "usb_descriptors.h"
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/* Device Descriptor */
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static 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 = TUSB_CLASS_MISC,
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.bDeviceSubClass = MISC_SUBCLASS_COMMON,
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.bDeviceProtocol = MISC_PROTOCOL_IAD,
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.bMaxPacketSize0 = CFG_TUD_ENDPOINT0_SIZE,
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.idVendor = 0x1d50,
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.idProduct = 0x6187,
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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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{
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return (uint8_t const *) &desc_device;
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}
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/* Configuration Descriptor */
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#define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN * CFG_TUD_CDC)
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static uint8_t const desc_config[] = {
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// Config number, interface count, string index, total length, attribute, power in mA
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TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP, 100),
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TUD_CDC_DESCRIPTOR(0, 4, 0x81, 8, 0x01, 0x82, 64),
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TUD_CDC_DESCRIPTOR(2, 5, 0x83, 8, 0x03, 0x84, 64),
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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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{
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// This example use the same configuration for both high and full speed mode
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return desc_config;
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}
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/* String Descriptors */
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#define USBD_STR_SERIAL_LEN 17
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static char usbd_serial[USBD_STR_SERIAL_LEN] = "000000000000";
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char const *string_desc_arr[] = {
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(const char []) { 0x09, 0x04}, /* 0: supported language == English */
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"sysmocom - s.f.m.c. GmbH", /* 1: Manufacturer */
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"osmo-gtm900", /* 2: Product */
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usbd_serial, /* 3: Serial, should use chip ID */
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"UART1",
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"UART2",
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};
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static uint16_t _desc_str[32];
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// Invoked when received GET STRING DESCRIPTOR request
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// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete
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uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
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{
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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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// Convert ASCII string into UTF-16
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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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// Cap at max char
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chr_count = (uint8_t) strlen(str);
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if (chr_count > 31)
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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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// first byte is length (including header), second byte is string type
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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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void usbd_serial_init(void)
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{
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uint8_t id[8];
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flash_get_unique_id(id);
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snprintf(usbd_serial, USBD_STR_SERIAL_LEN, "%02X%02X%02X%02X%02X%02X%02X%02X",
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id[0], id[1], id[2], id[3], id[4], id[5], id[6], id[7]);
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}
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