i am trying to interface cc2530 custom made DVK with my AVR atmega8 controller as ZAP, i already interfaced this DVK with C8051F340 before successfully and now i am willing to port the application code on my ATmega. i am using SPI in the ATmega everything seems to be fine from the controller side on my logic analyzer but the problem is that the MISO line always change to zero at the moment i send the CS to the CC2530 here are the readings from my logic analyzer
this is the system induced reset command, channel0 show the reset where after the reset the cc2530 pulls the slave ready low as expected
next step i send 3 byte poll commands of zero and then check if slave ready is high, if it's ok i read 9 bytes of the reset call back functions which unfortunately are all zeros
here is zoom in for the first 3 bytes i send for the poll command
and here is zoom in for the 9 bytes i am supposed to read which are all read as zeros