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LSE and HSE on MCO1

Question asked by Msba.Mehran on Mar 26, 2015
Latest reply on Mar 27, 2015 by Msba.Mehran
I use STM32F407.
I set MCO1 to PLL Clock and set output prescaler to 5 and I have 33.6MHz on my MCO1.
There is no problem in it, But when I enable LSE with HSE together, I have no signal on MCO1 pin.
Code:
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE|RCC_OSCILLATORTYPE_LSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.LSEState = RCC_LSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 25;
RCC_OscInitStruct.PLL.PLLN = 336;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
HAL_RCC_OscConfig(&RCC_OscInitStruct);
HAL_RCC_MCOConfig(RCC_MCO1,RCC_MCO1SOURCE_PLLCLK,RCC_MCODIV_5);

What is the problem?

Thanks...

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