From my customer: We are building a device based on TMS320F28035 with a half-duplex serial communication (RS485) component.
In one of the TI forums
http://www.ti.com/microcontrollers/c2000-real-time-control-mcus/tools-software.html
under Flash Programmers I found a list of ready-made flash programmers over a serial connection. This would be ideal for us, but not all of them work with RS485 and from what I understand, the bootloader burned into the FLASH_ROM assumes RS232 serial communication.
Here are a few questions that I hope you can answer or point us in the direction of a solution:
- Can the TI bootloader in ROM (documented in TMS320x2803x Piccolo Boot ROM sprugo0b) communicate using RS485?
- Has anyone shared code for programming flash using a bootloader over SCI with RS485 connection?
- We tried out the http://www.codeskin.com/programmer product, and although they claim to work over RS485, we think that the TI bootloader is not toggling the RX/TX pins and therefore the RS485 communication doesn’t succeed. Please see communication below and attachments.
We must be able to program the flash in our product over the RS485 serial port.
