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/*
* The MIT License (MIT)
*
* Copyright (c) 2019 Ha Thach (tinyusb.org)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
/* Host example will get device descriptors of attached devices and print it out via uart/rtt (logger) as follows:
* Device 1: ID 046d:c52f
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 0200
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x046d
idProduct 0xc52f
bcdDevice 2200
iManufacturer 1 Logitech
iProduct 2 USB Receiver
iSerialNumber 0
bNumConfigurations 1
*
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "bsp/board_api.h"
#include "tusb.h"
// English
#define LANGUAGE_ID 0x0409
//--------------------------------------------------------------------+
// MACRO CONSTANT TYPEDEF PROTYPES
//--------------------------------------------------------------------+
void led_blinking_task(void);
static void print_utf16(uint16_t* temp_buf, size_t buf_len);
/*------------- MAIN -------------*/
int main(void) {
board_init();
printf("TinyUSB Device Info Example\r\n");
// init host stack on configured roothub port
tuh_init(BOARD_TUH_RHPORT);
if (board_init_after_tusb) {
board_init_after_tusb();
}
while (1) {
// tinyusb host task
tuh_task();
led_blinking_task();
}
return 0;
}
/*------------- TinyUSB Callbacks -------------*/
// Invoked when device is mounted (configured)
void tuh_mount_cb(uint8_t daddr) {
// Get Device Descriptor
tusb_desc_device_t desc_device;
uint8_t xfer_result = tuh_descriptor_get_device_sync(daddr, &desc_device, 18);
if (XFER_RESULT_SUCCESS != xfer_result) {
printf("Failed to get device descriptor\r\n");
return;
}
uint16_t buf[256];
printf("Device %u: ID %04x:%04x\r\n", daddr, desc_device.idVendor, desc_device.idProduct);
printf("Device Descriptor:\r\n");
printf(" bLength %u\r\n", desc_device.bLength);
printf(" bDescriptorType %u\r\n", desc_device.bDescriptorType);
printf(" bcdUSB %04x\r\n", desc_device.bcdUSB);
printf(" bDeviceClass %u\r\n", desc_device.bDeviceClass);
printf(" bDeviceSubClass %u\r\n", desc_device.bDeviceSubClass);
printf(" bDeviceProtocol %u\r\n", desc_device.bDeviceProtocol);
printf(" bMaxPacketSize0 %u\r\n", desc_device.bMaxPacketSize0);
printf(" idVendor 0x%04x\r\n", desc_device.idVendor);
printf(" idProduct 0x%04x\r\n", desc_device.idProduct);
printf(" bcdDevice %04x\r\n", desc_device.bcdDevice);
// Get String descriptor using Sync API
printf(" iManufacturer %u ", desc_device.iManufacturer);
xfer_result = tuh_descriptor_get_manufacturer_string_sync(daddr, LANGUAGE_ID, buf, sizeof(buf));
if (XFER_RESULT_SUCCESS == xfer_result) {
print_utf16(buf, TU_ARRAY_SIZE(buf));
}
printf("\r\n");
printf(" iProduct %u ", desc_device.iProduct);
xfer_result = tuh_descriptor_get_product_string_sync(daddr, LANGUAGE_ID, buf, sizeof(buf));
if (XFER_RESULT_SUCCESS == xfer_result) {
print_utf16(buf, TU_ARRAY_SIZE(buf));
}
printf("\r\n");
printf(" iSerialNumber %u ", desc_device.iSerialNumber);
xfer_result = tuh_descriptor_get_serial_string_sync(daddr, LANGUAGE_ID, buf, sizeof(buf));
if (XFER_RESULT_SUCCESS == xfer_result) {
print_utf16(buf, TU_ARRAY_SIZE(buf));
}
printf("\r\n");
printf(" bNumConfigurations %u\r\n", desc_device.bNumConfigurations);
}
/// Invoked when device is unmounted (bus reset/unplugged)
void tuh_umount_cb(uint8_t daddr) {
printf("Device removed, address = %d\r\n", daddr);
}
//--------------------------------------------------------------------+
// Blinking Task
//--------------------------------------------------------------------+
void led_blinking_task(void) {
const uint32_t interval_ms = 1000;
static uint32_t start_ms = 0;
static bool led_state = false;
// Blink every interval ms
if (board_millis() - start_ms < interval_ms) return; // not enough time
start_ms += interval_ms;
board_led_write(led_state);
led_state = 1 - led_state; // toggle
}
//--------------------------------------------------------------------+
// String Descriptor Helper
//--------------------------------------------------------------------+
static void _convert_utf16le_to_utf8(const uint16_t* utf16, size_t utf16_len, uint8_t* utf8, size_t utf8_len) {
// TODO: Check for runover.
(void) utf8_len;
// Get the UTF-16 length out of the data itself.
for (size_t i = 0; i < utf16_len; i++) {
uint16_t chr = utf16[i];
if (chr < 0x80) {
*utf8++ = chr & 0xffu;
} else if (chr < 0x800) {
*utf8++ = (uint8_t) (0xC0 | (chr >> 6 & 0x1F));
*utf8++ = (uint8_t) (0x80 | (chr >> 0 & 0x3F));
} else {
// TODO: Verify surrogate.
*utf8++ = (uint8_t) (0xE0 | (chr >> 12 & 0x0F));
*utf8++ = (uint8_t) (0x80 | (chr >> 6 & 0x3F));
*utf8++ = (uint8_t) (0x80 | (chr >> 0 & 0x3F));
}
// TODO: Handle UTF-16 code points that take two entries.
}
}
// Count how many bytes a utf-16-le encoded string will take in utf-8.
static int _count_utf8_bytes(const uint16_t* buf, size_t len) {
size_t total_bytes = 0;
for (size_t i = 0; i < len; i++) {
uint16_t chr = buf[i];
if (chr < 0x80) {
total_bytes += 1;
} else if (chr < 0x800) {
total_bytes += 2;
} else {
total_bytes += 3;
}
// TODO: Handle UTF-16 code points that take two entries.
}
return (int) total_bytes;
}
static void print_utf16(uint16_t* temp_buf, size_t buf_len) {
if ((temp_buf[0] & 0xff) == 0) return; // empty
size_t utf16_len = ((temp_buf[0] & 0xff) - 2) / sizeof(uint16_t);
size_t utf8_len = (size_t) _count_utf8_bytes(temp_buf + 1, utf16_len);
_convert_utf16le_to_utf8(temp_buf + 1, utf16_len, (uint8_t*) temp_buf, sizeof(uint16_t) * buf_len);
((uint8_t*) temp_buf)[utf8_len] = '\0';
printf("%s", (char*) temp_buf);
}
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