Hello to all!
I working on a communication between an MC68HC908JL16 an a IIC device. I have a working write routine but I can not read from my IIC device.
write:
mov I2C_adr,MMADR
mov I2C_data,MMDTR
bclr 3,MIMCR ;Transmit
bset 4,MIMCR ;Start
brclr 1,MMSR,* ;MMDTR empty-flag
bclr 4,MIMCR ;Stop
rts
Read:
mov i2C_adr,MMADR
bset 0,MMADR ;read bit set
bclr 3,MMCR ;Ack
bset 3,MIMCR ;Receive
bset 4,MIMCR ;Start
brclr 0,MMSR,* ;MMDRR full The program stops always here and does not work further
bclr 4,MIMCR ;Stop
mov MMDRR,I2C_Data
rts
There must be an little error in my read routine. Can anyone help me please?
Regards,
Ingo
