Configuring GPO on the M24SR

[Angus Holder]

Posted on June 27, 2017 at 13:57

I am controlling the M24SR from a STM32F030R8 over I2C, trying to configure it so the GPO pin is triggered by the SendInterrupt command over RF. I have been working from the example code given

http://www.st.com/en/ecosystems/x-nucleo-nfc01a1.html#viper17_tools_sw_embedded-software

calling

M24SR_ManageGPO(INTERRUPT, RF_GPO);

which always returns `M24SR_ERROR_I2CTIMEOUT` and I can't work out why.

I am able to talk to the M24SR from my STM32 board, having successfully used it to store a URI into the NDEF storage.

As far as I can see, there isn't any prerequesites to calling M24SR_ManageGPO, so I can't work out what I'm doing wrong. Any help would be appreciated thank you