Eric, come in please.

[shahlynn]

    LPC92* can use your Touchless code to ISP. At least, I have tested it with LPC922.
    It seems that Touchless pass two parameter to BOOTROM fuction. Can you provide C function interface to call into BOOTROM directly? I think it will be very helpful. Otherwise, to write ASM module is a must as my method is as below.

STEP1
Create and include into project a file NoTouch.A51:

;
NAME NOTOUCH

PUBLIC NoTouch

SEG_NoTouch SEGMENT CODE

RSEG SEG_NoTouch

ISP_ENTRY  EQU   0xFF00

NoTouch:

  MOV A,02h
  MOV R5,01h
  MOV R7,03h
  LCALL ISP_ENTRY
  RET

END
;

STEP2
Add a line to C file

/**/
extern void NoTouch();
/**/

STEP3
Calling the fuction whenever want to do. For example, I put it in INT0 service and then replace several ISP wire and complicated timing with one button and a single finger.

[erikm]

>>Can you provide C function interface to call into BOOTROM directly?<<

No, no guaranteed way to set registers in C?

>>Otherwise, to write ASM module is a must as my method is as below.<<

What's the big deal?

Erik