Re: direct EEPROM editing via SB9600
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Cool stuff, excellent work!
I've been working on trying to make an emulator from a Teensy 4.0 and some level converters. It seems to be spitting out the right data but I'm having a time trying to get 5v logic out of the 3.3 to 5 tri-state octal transceiver. I can see that it's reading the radio's addresses and picking out emulated eeprom data from the data map I encoded into it but it's still showing a fail 01/84 or whatever eeprom corruption.?
I'm trying to figure out what they are doing with the two chip access lines. There is chip enable and output enable. The firmware eprom and codeplug eeprom's?output enable lines are tied together but the radio selects chip enable independently. I have my SN74LVT245 chip output enable tied to the chip enable line currently but I'm not sure how to handle the radio's IE line.?
On Sat, Sep 24, 2022 at 8:10 PM Skip Hansen < skip@...> wrote: Quick progress report... the concept proved!
Today I "edited" mode 1 to receive on 147.00, updated the checksum and the (re)selected mode 1 all via SB9600.? It worked!
The values were hard coded, but I believe I know now to calculate them so it's just a matter of writing some more code.
I finally hooked my X9000 to a supply with decent power supply and tested the transmitter, works 94 watts @ 18 amps.
Stay tuned...
73's Skip WB6YMH
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