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override AAT on ST25R3916

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Gaston
Associate III

‎2020-10-12 09:32 AM

Hi,

For production I don't want to use AAT_A and AAT_B features on ST25R3916 device. Can I leave these pins unconnected? What part of rfal should I remove to do this?

regards,

gaston

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Ulysses HERNIOSUS
ST Employee

‎2020-10-12 11:03 PM

Hi Gaston,

similar as for the CSI/CSO: st25r3916_aat.c contains the tuning algorithm. If you don't explicitly call it then there is no code added by linker. Besides you can remove it from the analog config: Currently defined in either rfal_analogConfigTbl.h or rfal_analog_config_custom.c (depending whether your application uses the default analog configs from RFAL). There you can delete/create your own copy where you remove the lines containing "__aat_en" and "ANT_TUNE_*", then also adjust the MODE_ENTRY number to cope with the removed entries.

Regards, Ulysses

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Ulysses HERNIOSUS
ST Employee

‎2020-10-12 11:03 PM

Hi Gaston,

similar as for the CSI/CSO: st25r3916_aat.c contains the tuning algorithm. If you don't explicitly call it then there is no code added by linker. Besides you can remove it from the analog config: Currently defined in either rfal_analogConfigTbl.h or rfal_analog_config_custom.c (depending whether your application uses the default analog configs from RFAL). There you can delete/create your own copy where you remove the lines containing "__aat_en" and "ANT_TUNE_*", then also adjust the MODE_ENTRY number to cope with the removed entries.

Regards, Ulysses

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