| ??? 06/29/06 08:47 Read: times |
#119321 - formatted code. Responding to: ???'s previous message |
Hope I have got the formatting right, now can I please have the corrections? I am in quite a bit of a hurry.
The code is not accepting more than 256 bytes, the ADDRS rolls over to 00h after 0ffh. Despite the change in RDCMD and WTCMD, the code only picks up 256 bytes. all subroutines work without any flaw.....the problem is in the main code.
;_________________________________________________________________
;--------------------------MAIN CODE------------------------------
;_________________________________________________________________
brw_main:
mov sp,#64h
mov p1,#0ffh
mov ie,#00h
acall s9k_main
;_________________________________________________________________
;--------------------FULL WRITE SUBROUTINE------------------------
;_________________________________________________________________
full_write:
setb ROLLOVER ;indicates memory write into 1st half
mov ADDRS,#00h
mov WTCMD,#10100000B
full_write_loop1:
acall rx_main
acall tx_main
mov I2C_IN,a
acall WRITE_iic
inc ADDRS
mov a,ADDRS
cjne a,#0ffh,full_write_loop2
jnb ROLLOVER,overload
mov WTCMD,#10100010B
mov ADDRS,#00h
clr ROLLOVER ;indicates memory write into 2nd half
full_write_loop2:
mov a,I2C_IN
cjne a,#27,full_write_loop1
mov dptr,#disp_leadthrough_complete
acall disp_message
;sjmp $
sjmp full_read ;delete this n enable previous inst
;_________________________________________________________________
;-----------------MEMORY OVERWRITE PREVENTION---------------------
;_________________________________________________________________
overload:
mov dptr,#disp_overload
acall disp_message
sjmp $
;_________________________________________________________________
;--------------------FULL READ SUBROUTINE------------------------
;_________________________________________________________________
full_read:
mov ADDRS,#00h
mov RDCMD,#10100001B
mov dptr, #disp_executing_task
acall disp_message
full_read_loop1:
acall READ_iic
mov a,I2C_OUT
lcall tx_main
inc ADDRS
mov a,ADDRS
cjne a,#0ffh,full_read_loop2
mov RDCMD,#10100011B
mov ADDRS,#00h
full_read_loop2:
mov a,I2C_OUT
cjne a,#27,full_read_loop1
mov dptr, #disp_finish_read
acall disp_message
SJMP FULL_WRITE
end
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