May 03, 2013
04:38 AM
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May 03, 2013
04:38 AM
I can use bootloader in uart, but i can't use bootloader in rs485
Seems to be because the relationship RS485 half-duplex
How do I fix this problem?
3 Replies
May 03, 2013
05:30 AM
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May 03, 2013
05:30 AM
Bootloading should also work with half-duplex communication. Its just that there is no example for that (AFAIK). So you would need to write your own bootloader component.
May 03, 2013
06:06 AM
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May 03, 2013
06:06 AM
The physical layer of RS485 vs 422 impacts the transceiver
signaling, hence firmware. See en.wikipedia.org/wiki/RS-485
So you would have to modify UART APIs put a firmware wrapper
around it.
Regards, Dana.
Anonymous
Not applicable
Dec 13, 2013
06:45 AM
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Dec 13, 2013
06:45 AM
The current UART bootloader is for full duplex mode. There are a couple of modifications needed for the half duplex mode.