hello,
in order to understand well the SPI protocol
I did 2 programs working on the same dev card: 1 Atmega644A as master, 1 atmega 168 as slave
I doesn't want (for now) use the hard SPI protocol
for M644: master
Config Spi = Soft , Din = Pinc.2 , Dout = Portc.3 , Ss = Portc.4 , Clock = Portc.5
' take care look at the mix of pin = input and port=output
Var = &B10101010
Cls
SPIINIT 'Init SPI state and pins.
Do
Spiout Var , 1 'send 1 byte
Jinteger = Jinteger + 1
Waitms 200
loop
------------------------------
for M168 slave
Config Spi = Soft , Din = Pinb.0 , Dout = Portb.1 , Ss = Portb.6 , Clock = Portb.7
Spiinit 'Init SPI state and pins.
Cls
Do
Spiin Var , 1 'receive 1 byte
Jinteger = Jinteger + 1
Waitms 200
Locate 1 , 1 : Lcd "send:" ; Jinteger
Locate 2 , 1 : Lcd "Var:" ; Var
Loop
result var=255 ?
pin Din(master) to din slave Dout(master) to dout slave and so on
I try to cross Din and dout same result !
where is my fault ?
Thanks JP
[b:25cee91873][color=red:25cee91873](BASCOM-AVR version : 2.0.7.6 )[/b:25cee91873][/color:25cee91873]
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