mirrors/pico-uart-bridge
1
0
Fork 0
mirror of https://github.com/Noltari/pico-uart-bridge.git synced 2025-01-01 12:05:59 +00:00
Code Issues Packages Projects Releases Wiki Activity

usb-descriptors: use flash ID as USB serial

Browse source 
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
This commit is contained in:
cxxcoder 2022-11-03 18:12:56 +01:00 committed by Álvaro Fernández Rojas
parent 05e4815f6b
commit 14c9a38076
2 changed files with 16 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
CMakeLists.txt
View file

@ -15,6 +15,7 @@ target_include_directories(uart_bridge PUBLIC
pico-sdk/lib/tinyusb/src)
target_link_libraries(uart_bridge
hardware_flash
pico_multicore
pico_stdlib
tinyusb_device)

17
usb-descriptors.c
View file

@ -9,6 +9,7 @@
* Copyright (c) 2019 Damien P. George
*/
#include <hardware/flash.h>
#include <tusb.h>
#define DESC_STR_MAX 20
@ -36,6 +37,7 @@
#define USBD_STR_MANUF 0x01
#define USBD_STR_PRODUCT 0x02
#define USBD_STR_SERIAL 0x03
#define USBD_STR_SERIAL_LEN 17
#define USBD_STR_CDC 0x04
static const tusb_desc_device_t usbd_desc_device = {
@ -71,7 +73,6 @@ static const uint8_t usbd_desc_cfg[USBD_DESC_LEN] = {
static const char *const usbd_desc_str[] = {
[USBD_STR_MANUF] = "Raspberry Pi",
[USBD_STR_PRODUCT] = "Pico",
[USBD_STR_SERIAL] = "000000000000",
[USBD_STR_CDC] = "Board CDC",
};
@ -95,11 +96,23 @@ const uint16_t *tud_descriptor_string_cb(uint8_t index, uint16_t langid)
len = 1;
} else {
const char *str;
char serial[USBD_STR_SERIAL_LEN];
if (index >= sizeof(usbd_desc_str) / sizeof(usbd_desc_str[0]))
return NULL;
str = usbd_desc_str[index];
if (index == USBD_STR_SERIAL) {
uint8_t id[8];
flash_get_unique_id(id);
sprintf(serial, "%02X%02X%02X%02X%02X%02X%02X%02X",
id[0], id[1], id[2], id[3], id[4], id[5], id[6], id[7]);
str = serial;
} else {
str = usbd_desc_str[index];
}
for (len = 0; len < DESC_STR_MAX - 1 && str[len]; ++len)
desc_str[1 + len] = str[len];
}