LwIP_HTTP_Server_Netconn_RTOS on STM32F767-Nucleo not compliant with RCC / PLL spec.
Hello,
I am using nucleo F767zi to run LwIP_HTTP_Server_Netconn_RTOS.
According to the MX configurator and according to DocID029041 Rev 6 (SM32F767xx Electrical characteristics) page 143 Fpll_should be [0,95-2,1Mhz].
The mentioned example generates (IMHO) .32 Mhz well outside the forementioned interval.
Details:
/* Enable HSE Oscillator and activate PLL with HSE as source */
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 25;
RCC_OscInitStruct.PLL.PLLN = 400;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 9;
RCC_OscInitStruct.PLL.PLLR = 7;
// so => Fpllin = 8 Mhz / M = 8 Mhz / 25 = 0,32MX configurator comes to the same conclusion:
It is a bit strange that an ST example designed (?) for the 767zi board does not comply with the specs?
In the same line the example specifies: (main .c line 72)
/* Configure the system clock to 200 MHz */
SystemClock_Config(); Whereas, according to the code fPllout = fpllin * 400/2 = 64Mhz.
Could it be that I am missing something, because it seems a bit odd (provided my analysis is correct) for ST to provide examples that are outside the specs?
My intention is to use the example as a starting point for my application, but therefore I would assume that the example is compliant with the board, but at first sight it seems not the case?