Hi,
I am using STM32WBA52CGU6 controller.
I configure Pins of LSE_IN and LSE_OUT.
Without generating frequency at this LSE_IN Pin I got detection as LSE is on but actually LSE_IN is just open.
I attached System clock Config code below:-
/** Initializes the CPU, AHB and APB busses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI|RCC_OSCILLATORTYPE_HSE
|RCC_OSCILLATORTYPE_LSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.HSEDiv = RCC_HSE_DIV1;
RCC_OscInitStruct.LSEState = RCC_LSE_ON;
RCC_OscInitStruct.LSIState = RCC_LSI1_ON;
RCC_OscInitStruct.LSIDiv = RCC_LSI_DIV1;
RCC_OscInitStruct.PLL1.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL1.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL1.PLLM = 2;
RCC_OscInitStruct.PLL1.PLLN = 30;
RCC_OscInitStruct.PLL1.PLLP = 14;
RCC_OscInitStruct.PLL1.PLLQ = 6;
RCC_OscInitStruct.PLL1.PLLR = 5;
RCC_OscInitStruct.PLL1.PLLFractional = 5120;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) == HAL_OK)
{
len_ReturnConfigStatus = HSE_CONFIG_SUCCESS;
return len_ReturnConfigStatus;
}
else
{
RCC_REG = *((uint32_t*)(RCC_BASE_NS));
RCC_BDCR1 = *((uint32_t*)(RCC_BASE_NS+0x0F0));
}
Not getting LSE failure detection at OscConfig
Reading of RCC_BDCR1 register turn on bit of LSEON and LSEREADYF indicates that LSE is ready to use but LSE_IN Pin is just open.
Register reference Multiprotocol wireless Bluetooth<Sup>®</Sup> LE and IEEE802.15.4, STM32WBA5xxx Arm<Sup>®</Sup>-based 32-bit MCUs - Reference manual page 413
