LAUNCHXL-F28379D: SCIB configuration using registers (bit fields)

Hey Sumit,

do you receive anything independently of the interrupt?

Check in the debug of CCS in the SCIBREGs registers whether everything is set correctly. I suspect that perhaps the settings are in SCIA and not in SCIB.

What I noticed in the code is that you disable the interrupt in line 91 but I don't see that you enable it again.

Is that somewhere else in the code?

Best regards
Leon

Hi Sumit,

Have you already referenced our bitfield C2000Ware examples? There is one that uses SCI FIFOs and interrupts. It does use internal loopback, but would still be helpful to look over regardless: {C2000Ware}\device_support\f2837xd\examples\cpu1\sci_loopback_interrupts. Please check if this helps to compare in terms of your SCI initialization configurations if there is anything missing or configured out of order.

We also have an SCI FAQ I wanted to share as this walks through debugging the SCI based on the issue symptoms you are seeing:  

• https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1031947/faq-my-c2000-sci-is-not-transmitting-and-or-receiving-data-correctly-how-do-i-fix-this. 

Best Regards,

Allison

Allison,

thanks for sharing this. let me look into this and get back you with my findings/issues.

Thanks,

Hello Allison,

I followed the example you suggested and trying to replicate the same for SCIB. Have these questions:

could you confirm if these interrupts are indeed for SCIB

also I rx interrupt is still not being triggered

I am doing something wrong in the init() func see below:

thanks

Allison,

I followed the example you suggested and trying to replicate the same for SCIB. Have these questions:

could you confirm if these interrupts are indeed for SCIB

also I rx interrupt is still not being triggered

I am doing something wrong in the init() func see below:

thanks

Hi Sumit,

Yes those are the correct registers for SCIB:

Did you take a look at the SCI FAQ as well? If not, please do as it has helpful suggestions on how to debug SCI. Have you already scoped the lines to ensure you are actually receiving data regardless of if the interrupt is functioning or not? The first thing to do is usually scope the SCI lines to ensure they are as expected. 

Best Regards,

Allison

Allison,

can you also show me how to get a timestamp. I have looked at cpu_timers_cpu01 example but I don't want timer interrupt just want to get the time stamp. Is there any API I can use?

Thanks,

Hi Sumit,

Could you please create a new thread for this question? We try to limit threads to just one focus/question and I want to make sure new questions get to the right expert to help you. Be sure to also explain the context of what time stamp you are trying to get. 

Thanks & Regards,

Allison