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9 years, 7 months ago.
Pin PA_4 and PA_5 non exist on 746 discovery board for DAC. Where get a output for DAC?
https://developer.mbed.org/platforms/ST-Discovery-F746NG/
Question relating to:
1 Answer
9 years, 7 months ago.
Both requested pins appear to be available but you will have to trace them on the target board as they are in use by other functions. Search for PA4 & PA5 inside this document:
http://www.st.com/st-web-ui/static/active/en/resource/technical/document/user_manual/DM00190424.pdf Table 10
to view the schematic and related functions which are in use. Believe that if you do not use the noted functions, the same pins will be available for your use but this is a quick review so please confirm the same on your side.
reference ST page: http://www.st.com/web/en/catalog/tools/FM116/SC959/SS1532/LN1848/PF261641?sc=stm32f7-discovery
You noted DAC use but the PA_4 & PA_5 do not appear to be linked to the DAC hardware. Will review in more detail later today and will post back. Please review the same with caution.
Ok, so pin 17 of P1 connector will provide you with the PA_4 point of contact.
PA_5 is more tricky and related to the ULPI_CK so you will need to review if that function is necessary for your project or not. You may wish to consider the use of another processor / target board that will allow for your access. A plan B is to review the use of an external DAC.
posted by 18 Jan 2016