diff options
| -rw-r--r-- | tmk_core/common/chibios/flash_stm32.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/tmk_core/common/chibios/flash_stm32.c b/tmk_core/common/chibios/flash_stm32.c index e8b3dc4bc9..66f2b13768 100644 --- a/tmk_core/common/chibios/flash_stm32.c +++ b/tmk_core/common/chibios/flash_stm32.c @@ -161,9 +161,11 @@ FLASH_Status FLASH_ProgramHalfWord(uint32_t Address, uint16_t Data) { * @retval None */ void FLASH_Unlock(void) { - /* Authorize the FPEC Access */ - FLASH->KEYR = FLASH_KEY1; - FLASH->KEYR = FLASH_KEY2; + if (FLASH->CR & FLASH_CR_LOCK) { + /* Authorize the FPEC Access */ + FLASH->KEYR = FLASH_KEY1; + FLASH->KEYR = FLASH_KEY2; + } } /** |