TMS570LS3137: Reading 64 RTI timer counter

Hello,

Please, take a look at this thread:

https://e2e.ti.com/support/microcontrollers/hercules/f/312/p/696133/2565802

This is stated in TRM, Section 13.2.1.1 ( page 438 )

Hello,

In this thread, They have taken FRCx of both counter for 64 bit counter.

According to datasheet: 13.2.1.1

The free running counter (RTIFRCx) must be read first. This priority will ensure that in the cycle when the
CPU reads RTIFRCx, the up counter value is stored in its counter register (RTIUCx). The second read has
to access the up counter register (RTIUCx), which then holds the value which corresponds to the number
of RTICLK cycles that have elapsed at the time reading the free running counter register (RTIFRCx).
NOTE: The up counters are implemented as shadow registers. Reading RTIUCx without having
read RTIFRCx first will return always the same value. RTIUCx will only be updated when
RTIFRCx is read.

So as per my understanding: 64 bit value is combination of  RTIFRCx and RTIUCx.

let me know if only FRCX value needs to be taken  for 64 bit.

Tejashree

Hello,

Can you please explain if the above method from link provided by you is correct.

this issue is not resolved.

Tejashree

This does not resolved my issue

ok.tHIS WORKS FINE.  everything is working fine now. thank you for the update.