topic Re: Custom 9s12 board in CodeWarrior for MCU

Custom 9s12 board

Mway — Thu, 24 Feb 2022 04:32:19 GMT

Hi I’ve made a custom development board with 9s12dt128 have all the connections and bdm working working however it seems my mcu is not operating as I upload code and doesn’t seem to work. I have a clock signal at eclk pin I am running with mhz external crystal and believe everything is connected correctly

Re: Custom 9s12 board

ZhangJennie — Fri, 25 Feb 2022 08:02:16 GMT

Could you please confirm if you can download project to the target successfully: Create a new project with wizard, after download the code, can you step over the code in debugger?

Please record me a video about the download and step over in debugger. I will check if there is any problem.

Thanks,

Jun Zhang

Re: Custom 9s12 board

Mway — Thu, 03 Mar 2022 12:18:43 GMT

How do you calculate resistor values and capacitor values for pll circuit I’m using 8mhz crystal pierce setup it seems the clock and bus clock is very unstable

Re: Custom 9s12 board

ZhangJennie — Fri, 04 Mar 2022 03:03:46 GMT

HI Mway

If you wonder the problem is caused by hardware design, I suggest you check with 16bit MCU space rather than CW space:

https://community.nxp.com/t5/S12-MagniV-Microcontrollers/bd-p/16-bit

Have a nice day

Jun Zhang