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Hi Andy


I was able to read the device code. After that when i programmed the HEX file and checked the CRC . The block 0 of the Device CRC matches the HEX file CRC. But Block 7 and All memory does not match . But my code somewhat works.Is it ok? .


Thanks

Hi Andrew and all


I checked with a scope . I could see the clock signal and the data in the scope when i  read the device signature . I checked the connection . nothing wrong with it. But still i am getting FFs. Can anyone help me with this. I am not able to move forward with my project.

I am using the MCB900 Board Rev 4 with P89LPC935 to program my application board which has P89LPC931. I followed the schematic and instructions given in Appnote AN10258 . I was able to go to step where the P2.3 LED glow. After this when i try to read the Device signature i am getting all FFs. I am reading  at a speed of 19200 Baud .


Thanks

Guys

I am new to 8051 and keil. I bought a new MCB900 board  version4 which has P89LPC935 chip. I already had an old keil version 2.31 . I tried to program the hello example program which came with the disk.  I was able to program the Board using the Rs232 cable . But i am   not getting the result( blinking LED) .

i have a  attached a copy of the program  


#include

#include                    

void main (void) {
 
   P2 = 0x00;

  while (1) {
    P2 ^= 0x02;             
   
  }
}

The following is the copy of startup code.
 
IDATALEN        EQU     80H     ; the length of IDATA memory in bytes.
IBPSTACK        EQU     0       ; set to 1 if small reentrant is used.
IBPSTACKTOP     EQU     07FH+1  ; set top of stack to highest location+1.
FOSC EQU 3
CLKR EQU 1  
BOV  EQU 1  
PRHI EQU 1  
RPD  EQU 0
WDTE EQU 1  
SB   EQU 3  
etc

I checked  the option  use DTR and RTS when in ISP mode and protect ISP code.

Version of flash magic 2.45 .

Can you help me please.

Thanks