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#1 2010-12-14 17:05:00

slipdop
Member
Registered: 2010-01-31
Posts: 8

Disable Antenna

Hey guys, im writing a function to emulate a number of different tags. For user convenience, it seems to be a requirement to be able to leave the antenna within the field of the reader. to facilitate this requirement i figured it would be the best to disable the antenna and re-enable it between sending the tags. this way the user can just keep the antenna in the readers' field and emulate all of the different tags without having to physically remove the tag(antenna) from the field between transmission.

does anyone know of a simple way to do this? i cant seem to find a function for it.

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#2 2010-12-16 13:02:42

codysnider
Member
From: Denver, Colorado
Registered: 2010-12-16
Posts: 8
Website

Re: Disable Antenna

Have you tried setting the FPGA to off?

FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

Also, you may want to try stopping the antenna with this:

LOW(GPIO_SSC_DOUT);

If using the latter method, be sure the code contains the following beforehand:

AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT;
AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT;[

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