AnsweredAssumed Answered

Problems using serial booloader for MC56F8367

Question asked by Alex Kasperovich on Jul 1, 2014
Latest reply on Jul 18, 2014 by Alex Kasperovich

I am trying to use the bootloader that came with the CodeWarrior for DSC56800E v8.3 package to have the DSC load an S-Record via the COM port and afterwards run it on a MC56F8367 DSC. I am using the serial bootloader that came from CodeWarrior_for_DSC56800E_v8.3\Stationery\Processor_Expert_Examples\Bootloaders\56F83xx\serial_bootloader, and I am using the CodeWarrior USBTAP to load in the bootloader. Then I try to load in an S-record via the COM port (using Tera Term hyperterminal), and the problems begin. (The S-records I’m trying to load in through the COM port work correctly if I try to load them with the USBTAP.) Up until a few days ago, I’d get error # 6 (flash programming error), but now it just says “Application started from address 0x0000”, waits a few seconds, then displays the bootloader’s “Waiting for application S-Record” message. (The change occurred when I downloaded first the out.x.S file and then the out.p.S file using the COM port, but I don’t see how that could have caused it.)

Using the View Memory/Save Range utility of the USBTAP,  I get confusing results:



S32500000000 5CE2000054E2C60254E2C60254E2C60254E2C60254E2C60254E2C60254E2C602 AA

S32500000020 54E2C60254E2C60254E2C60254E2C60254E2C60254E2C60254E2C60254E2C602 CA





S32500000000 5CE2000054E2C60254E2C60254E2C60254E2C60254E2C60254E2C60254E2C602 AA


S32500000020 54E2C60254E2C60254E2C60254E2C60254E2C60254E2C60254E2C60254E2C602 CA





Each line originally has 64 data characters, or 32 bytes, but the addresses in the readback advance by 0x10, or 16 bytes, implying that there is simultaneously data written and empty space there? I’m pretty sure that’s not how it’s meant to be, but I don’t know if that’s a symptom of the real problem or just a side effect.

Anybody have any suggestions for me?



P.S. My CodeWarrior IDE version is 5.9.0, and I am using a Windows 7 computer. I downloaded a zip file with css updates to get the USB TAP to work.