thab

Hello, I have trouble interfacing the Digilent PMOD AQS on a Zedboard using only the fabric logic of the FPGA. I'm reproducing the initialization flow as described in the CCS811 programming guide, which is as follow : Everything works fine until I write the APP_START register : once done, I only read 0xFF no matter the register I address. I noticed that my I2C accesses are correctly acknowledged by the PMOD. I haven't been able to fetch data from the component so far. Is this a known issue ? Is there something I am missing here which could explain this strange behavior ? My I2C link is running at 100 kHz. Thank you for your answers.