sci->TD not being set

NathanK

Other Parts Discussed in Thread: HALCOGEN

In one of my CCS projects, I am able to successfully use sciSend to send data over USB back to my development computer. In another CCS project, the development computer is not receiving data sent by sciSend. Both projects are configured identically in HalCoGen, and in this example I have set both to send the same data.

I have traced the potential source of the problem, but I am uncertain of its cause. I step through to this line in sciSend (I have not modified the sci.c file generated by HalCoGen):

sci->TD = (uint32)(txdata);

In the project that works, I observe in the debugger that sci->TD is successfully assigned the value from txdata. In the project that doesn't work, I observe that the value of sci->TD remains 0 rather than taking on the value of txdata.

Any ideas on what could be causing the different behavior in these two projects? Thanks!

over 10 years ago

0 KARTHIKEYAN RAJAMANICKAM over 10 years ago

TI__Genius 11645 points

Hello Nathan,

Are you getting any exceptions while attempting a write where you it not going through ?

Only SCI TD has the issue or writes to all the SCI registers are ignored ?

There could be only two reasons that I can think off with how much you have explained above,

1. Peripherals are still not released out of power down and enabled.

But since you are using Halcogen, there is a function called "periphInit" called by sytem init, so I do not suspect this much

2. Have you used configured MPU and enabled ? If yes then pls check the configured regions once.

0 KARTHIKEYAN RAJAMANICKAM over 10 years ago in reply to KARTHIKEYAN RAJAMANICKAM

TI__Genius 11645 points

Pls let us know if you got to solve this issue ?

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sci->TD not being set