topic MPC5643L DPM mode setting in MPC5xxx

MPC5643L DPM mode setting

subashr — Fri, 07 Jul 2017 05:10:49 GMT

#Hi,

I am currently working with Development board KT33908MB with KTMPC5643DB (mother board and daughter board). I am trying to create a base code to switch on the led's on the mother board , operating the controller in LSM and DPM mode. I used "CW for MPC55xx and MPC56xx 2.10" to generate a code for DPM and LSM separately. In the DPM project, i configured the ports and wrote a simple code to toggle the led.

Now when i established the connection to the daughter board (PE Multi-link Universal JTAG and icdppcnexeus) i could see the message, "Processor detected in lockstep mode". I followed all the steps mentioned in some of the related posts to change between LSM and DPM mode.

1. Used progppcnexus to upload the s-record file and modified the value at addr 0xFFFE10(modified.s19). Erased the module, programmed it with the new s19 file, verified and Powered down the board. (script - Freescale_MPC5643L_1x32x4k_Shadow_Blk_Freescale_C90FL_Driver_031.PCP)

2. Now used the icdppcnexus to connect to the board. Again got the same message, "Processor detected in lockstep mode"(pic 1). And when i loaded the object file of my DPM project (RAM.elf), and gave GO, i got the below response(pic 2) (script : mpc5643l_vle.mac)

3. When i programmed the already existing s19(attached here) and then flashed my code, the code worked as expected. It checked for a switch press and toggled the pin on switch press.(pic 3)Once i power down the board and power up again, the board is in some unknown state and again i need to flash to get the output i mentioned.

Kindly help me in understand what am i missing here.

(Note:I have kept the daughter board boot selection to Single Chip mode FAB - Gnd, ABS0,2 -Gnd ).

pic1:

pic 2:

pic 3:

Original Attachment has been moved to: Existing.S19.zip

Original Attachment has been moved to: modified.S19.zip

Re: MPC5643L DPM mode setting

davidtosenovjan — Fri, 07 Jul 2017 12:04:20 GMT

Hi, here you may find a description how to simply switch MCU between LSM and DPM modes with using of PeMicro debugger:

PEmicro - P&E Microcomputer Systems: Over 30 years as an Industry leader in Embedded Systems Development Tools, debug pr…

Here you may find start-up codes for both options:

Example XPC5643LKIT PinToggleStationery LSM CW210

Example XPC5643LKIT PinToggleStationery DPM CW210

Hope it helps

Re: MPC5643L DPM mode setting

subashr — Mon, 10 Jul 2017 09:41:38 GMT

Hi davidtosenovjan,

Thanks for your reply.

Here is my observation.

With the latest versions of ProgPPC and ICDPPC(ver 6.22.00.00) i could see the message "processor detected in dual-core mode". But with the same shadow flash data, ICDPPC(ver 1.34.00.01) gives the message "processor detected in lockstep mode". Not sure Why.

I flashed my DPM project as well as the example DPM code you had mentioned. Once I flash the code, i see both the cores running. But once I reset the board, the software doesn't run. Again I have to flash the project to see the same output.

What is the startup sequence that i need to follow to have a proper boot and software run