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Fixing unique id DEVICE_ID3 on STM32L0 and STM32L1 #3083

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Merged
fpistm merged 1 commit into from
Sep 22, 2026
+5 −11
Merged

Fixing unique id DEVICE_ID3 on STM32L0 and STM32L1 #3083

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3 changes: 0 additions & 3 deletions libraries/USBDevice/inc/usbd_desc.h
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Original file line number Diff line number Diff line change
Expand Up @@ -26,9 +26,6 @@

/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/
#define DEVICE_ID1 (UID_BASE)
#define DEVICE_ID2 (UID_BASE + 0x4U)
#define DEVICE_ID3 (UID_BASE + 0x8U)

/*
* USB Billboard Class USER string desc Defines Template
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13 changes: 5 additions & 8 deletions libraries/USBDevice/src/usbd_desc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,8 @@
#include "usbd_desc.h"
#include "utils.h"
#include <variant.h>

#include "stm32yyxx_ll_utils.h"
#include "stm32yyxx_ll_system.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/

Expand Down Expand Up @@ -444,13 +445,9 @@ uint8_t *USBD_Class_InterfaceStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *le
*/
static void Get_SerialNum(void)
{
uint32_t deviceserial0;
uint32_t deviceserial1;
uint32_t deviceserial2;

deviceserial0 = *(uint32_t *)DEVICE_ID1;
deviceserial1 = *(uint32_t *)DEVICE_ID2;
deviceserial2 = *(uint32_t *)DEVICE_ID3;
uint32_t deviceserial0 = LL_GetUID_Word0();
uint32_t deviceserial1 = LL_GetUID_Word1();
uint32_t deviceserial2 = LL_GetUID_Word2();

deviceserial0 += deviceserial2;

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