Hi,
I am trying to use the UART to load an AIS file in a TMS320DM6437 device (FASTBOOT = 1, AEM[2:0] = 001b, BOOTMODE[3:0] = 1000b). I could find in another post that when using UART without flow control, we need to turn off the CRC computation, which I did.
I have several problems to get a successfull upload but I could find a given setup that works correctly which is the following one:
1- Generate the AIS file with those options: "perl.exe %1\genAIS.pl -i %2\Sensor.out -crc 0 -otype txt -bootmode uart -o %2\Sensor_EVM.ais -cfgtype ais -cfg %1\aiscfg_EVM.txt" (aiscfg_EVM.txt is attached).
2- Upload the file through a terminal (Tera Term) in a single sequence.
When doing this, I correctly get the "DONE" response.
Here are situations that result in an upload failure with the message "DATA CORRUPT" and that I cannot explain:
1- If I try to adjust the PLL frequency in my AIS config file "aiscfg_EVM.txt", the error message appears right after the beginning of the upload (before the file upload is finished). The lines I am trying to add are:
0x5853590D #Function Execute Command
0x00030000 # Selects PLL configuration function, with 3 arguments
0x00000015 # PLLM value
0x00000000 # PLLDIV 0
0x00000000 # Clock source
2- Another situation that makes the upload to fail is if I pause the AIS upload and resume it some time later or if I send it in small pieces instead of a single big file. The message appears right after the beginning of the second piece upload. Is there a timeout in the bootloader code that would explain this behaviour?
Is there someone who could give me some hints about what is happening?
Thanks
Franck
