topic EmbSysRegisters Question in Kinetis Design Studio

EmbSysRegisters Question

jerrygardner — Fri, 19 Feb 2016 18:14:29 GMT

Here's a question for the EmbSysRegisters experts out there:

How does EmbSysReg read peripheral registers? The reason I ask is that there are peripheral registers, such as POPR in the SPI peripheral, that pull a word of data out of a FIFO when they're read. If EmbSysReg reads this register using the same method application code uses, it will "consume" one word of data from the RX FIFO every time it reads the POPR register. That data then disappears from the perspective of the application code.

Re: EmbSysRegisters Question

BlackNight — Fri, 19 Feb 2016 18:28:03 GMT

Hi Jerry,

I would thing that you could get a definitive answer on EmbSysRegView .

But my understanding is that it reads the memory through the GDB/Debugger read command. So it does not execute some code on the target, but uses the debug interface to read the memory mapped registers.

Erich

Re: EmbSysRegisters Question

kennethtait — Mon, 13 Jun 2016 19:10:12 GMT

I'm adding this here since it seems appropriate.

using an MK22F1M0 on Kinetis on Linux.

in the debugger there is NO entry for this in embSysRegister choices. Closest match is 512k part which for all intent and purposes is almost the same.

Both parts have 6 UARTS. I only see 3 in the view...so what goes on here? How can I trust this debugger if it lies all the time?

Ken