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USB serial now returns the Pico unique ID.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos 2022-03-07 01:38:32 +01:00
parent a5902db07f
commit bad954a2c4
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GPG key ID: C0095B7870A4CCD3
1 changed files with 8 additions and 0 deletions
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8
usb_descriptors.c
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@ -26,6 +26,7 @@
#include "tusb.h"
#include "usb_descriptors.h"
#include "ccid.h"
#include "pico/unique_id.h"
/* A combination of interfaces must have a unique product id, since PC will save device driver after the first plug.
* Same VID/PID with different interface e.g MSC (first), then CDC (later) will possibly cause system error on PC.
@ -210,6 +211,13 @@ uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
if ( !(index < sizeof(string_desc_arr)/sizeof(string_desc_arr[0])) ) return NULL;
const char* str = string_desc_arr[index];
char unique_id_str[2 * PICO_UNIQUE_BOARD_ID_SIZE_BYTES + 1];
if (index == 3) {
pico_unique_board_id_t unique_id;
pico_get_unique_board_id(&unique_id);
pico_get_unique_board_id_string(unique_id_str, 2 * PICO_UNIQUE_BOARD_ID_SIZE_BYTES + 1);
str = unique_id_str;
}
// Cap at max char
chr_count = strlen(str);