MCF51JE Only Operates through Debug Session

mfritz — Wed, 08 Apr 2020 20:56:15 GMT

I think the issue is that Checksum Bypass at memory location 0x40A is not getting programmed with value 0x00. Therefore the device enters bootloader mode.. Everytime device is powered on (with and without programmer connected), it will not run a program. It will only run a program through a debug session.

The S19 file shows the applicable memory locations being given the desired values, but when examining the device memory, they don't get written into the memory.

From S19:

S3060000040A00EB Indicates that 0x40A will be set to 0x00, but device memory remains set to 0xff.
S3060000040DF7F1
S3060000040F43A3

Lines in source code:
const byte CHKSBYP1_INIT @0x0000040a = 0x00;
const byte NV1PROT_INIT @0x0000040d = 0xf7;
const byte NV1OPT_INIT @0x0000040f = 0x43;
const byte CHKSBYP2_INIT @0x0002040a = 0x00;
const byte NV2PROT_INIT @0x0002040d = 0xf7;
const byte NV2OPT_INIT @0x0002040f = 0x43;

Using CodeWarrior v11.1 and PE Micro Cyclone Pro

This message https://community.nxp.com/message/321632 appears to be very similar to my problem. However, there should be a better and more reliable remedy.

Re: MCF51JE Only Operates through Debug Session

vicentegomez — Wed, 15 Apr 2020 17:45:59 GMT

I am helping you with the request that you created on the system.

Regards

Vicente Gomez

Re: MCF51JE Only Operates through Debug Session

TomE — Thu, 16 Apr 2020 00:32:18 GMT

I don't know anything about these parts. I do know how to search these forums. Searching for "0x40A" finds this previous post that looks similar to your problem:

https://community.nxp.com/message/321632

Tom

topic Re: MCF51JE Only Operates through Debug Session in ColdFire/68K Microcontrollers and Processors

MCF51JE Only Operates through Debug Session

Re: MCF51JE Only Operates through Debug Session

Re: MCF51JE Only Operates through Debug Session