I've coded an RTX driver following the flow in example aiex1.cpp. Setup for 7 channels. Implemented all except I did not implement the aiGetScalingCoefficients. Is it required? What is it?
What changes are needed to setup for single ended common ground, instead of differential? Is it necessary to have a voltage present on the 6224 during integration testing?
After initialization the JOINT_STATUS_2 returns 0x90 indicating that AI_Scan_In_Progress_St, and AI_EOC_St, and never clears.
Can't read from the FIFO unless the AI_Scan_In_Progress_St clears.
Since NI doesn't provide a manual I have no idea what this means, except that these flags never clear.
So where is the FIFO data? Why are we using a FIFO. Is there a mapped memory option instead? I am not using DMA.
What exactly is flush call used in example code? Are delays required between register commands? Single stepping through the code gives the same JOINT_STATUS_2 status.
The example code calls write/read methods. Does every write put zeros in non specific register bits?
Do you have a direct register accessing sequence with HEX inputs which shortcuts the labored methods used in the examples? All I want is to read 7 analogs on demand at 100Hz.
Hope someone has answers. Thanks.
