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ADC Library Problem Fixed

Question asked by baird.hal.001 on Jul 14, 2012
I have been griping about a problem in the Std Peripheral Library whereby a ADC common init structure was not completely initialized in the examples provided.

The most recent F4 library Version V1.0.1 dated 28 December 2011 now has the statement:

ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;

which fixes the problem.

Note that even if you are not using an external trigger by using the statement:

  ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;

the ADC_InitStructure.ADC_ExternalTrigConv statement is still needed to initialize that structure member to something in the valid range, otherwise strange results like 16 bit conversions occur. The T1_CC1 initialization is equivalent to initializing the structure member to 0.

Cheers, Hal

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