nRF2740 RDYN low after RESET

[Marc Leroux]

I am trying to hook up nRF8001 to TI MSP430F663x via nRF2740 module.

All inputs seems to be controlled properly.

Once I release the nRF8001 RESET line, RDYN goes low instead of expected high. Toggling REQN does not change RDYN status.

If I still try to send the "echo" ACI command, NRF8001 sends back 0x81 (ACI_STATUS_ERROR_INTERNAL) on MISO then set RDYN high at end of SPI message and drops it back.

Any ideas on why ACI is not behaving as expected?

Does the nRF8001 needs to be connected to nRFgo studio before ACI interface is enabled?

Thanks for you help

[Marc Leroux]

This is exactly what is happening. Thank you very much for your help.