??? 09/27/04 19:04 Read: times |
#78218 - RE: BOOTLOADER Responding to: ???'s previous message |
Ok I'm back here I tried the hardware conditions for the bootloader and it did not work for me. But now I did this just for test: MAIN: SETB EA SETB ES CPL P2.2 ; buzzer off CALL DELAY CALL DELAY SJMP MAIN ISP_BOOT: AUXR1 DATA 0A2H; WDTRST DATA 0A6H; GoToBoot: MOV AUXR1,#020H MOV R0,#11 MOV R1,#06H MOV DPTR,#00H MOV A,#0FFF0H SETB P2.2 ; buzzer on CALL DELAY CLR P2.2 ; buzzer off MOV R1,#0FFH DJNZ R1,$ SETB P2.2 ; buzzer on CALL DELAY CLR P2.2 ; buzzer off LCALL 0FFFH JMP $ ;**************************************** INT_SERIAL: ; ATEN. SERIAL-INT PUSH PSW PUSH ACC CLR EA CLR ES CLR RI MOV A,SBUF CLR C CJNE A,#'B',EXIT_SERIAL SJMP ISP_BOOT ;************************************ EXIT_SERIAL: CLR RI CLR ES POP ACC POP PSW RETI When the uc received 'B' on the serial port it jumps to the add 0fffh, on my MAIN routine I make a buzzer to beep so I know when is running on normal conditions after "B" is received on the serial port the buzzer goes two times a faster f and then stay off so I know when is at the add 0fffh but when I try to connect with FLIP I get time out error Am I missing something still? When I hit reset it goes to normal operation. |
Topic | Author | Date |
BOOLOADER | 01/01/70 00:00 | |
RE: BOOLOADER | 01/01/70 00:00 | |
RE: BOOLOADER | 01/01/70 00:00 | |
RE: BOOLOADER | 01/01/70 00:00 | |
RE: BOOLOADER | 01/01/70 00:00 | |
RE: BOOLOADER | 01/01/70 00:00 | |
RE: BOOLOADER | 01/01/70 00:00 | |
RE: BOOLOADER | 01/01/70 00:00 | |
RE: BOOLOADER | 01/01/70 00:00 | |
RE: BOOLOADER | 01/01/70 00:00 | |
RE: | 01/01/70 00:00 | |
RE: 12V Sigs | 01/01/70 00:00 | |
RE: 12V Sigs | 01/01/70 00:00 | |
RE: 12V Sigs | 01/01/70 00:00 | |
RE: 12V Sigs | 01/01/70 00:00 | |
RE: 12V Sigs | 01/01/70 00:00 | |
RE: 12V Sigs | 01/01/70 00:00 | |
RE: 12V Sigs | 01/01/70 00:00 | |
RE: 12V Sigs | 01/01/70 00:00 | |
RE: BOOTLOADER | 01/01/70 00:00 | |
RE: BOOTLOADER | 01/01/70 00:00 | |
RE: BOOTLOADER![]() | 01/01/70 00:00 | |
RE: BOOTLOADER | 01/01/70 00:00 |