H750VBT6 BKPSRAM can't keep DATA
/* Enable write access to Backup domain */ PWR->CR1 |= PWR_CR1_DBP; while((PWR->CR1 & PWR_CR1_DBP) == RESET) { } /*Enable BKPRAM clock*/ __HAL_RCC_BKPRAM_CLK_ENABLE(); *(__IO uint32_t*)(0x38800000+36) = 12345678;run to here, DATA 12345678 is writt...