| ??? 01/02/10 16:16 Read: times |
#172124 - What kind of programmer? Responding to: ???'s previous message |
Avni Modi said:
Hello,
Mr.Jan Waclawek. We are not using any external memory chip and external watchdog chip. For to download program into chip I'm using intelligent universal programmer, and I do not know about the version of the bootloader. Contrary to the claims of many a programmer seller, there is no "universal" programmer. The best you can hope for is one that programs the devices YOU want to program. Few of them will even do that. Most often, you have to have a programmer specifically designed to program the chip you are using. What is the "universal" programmer that you're using? If you provide this information, perhaps someone has experience with your MCU together with that "universal" programmer. Also, we have connected pull up resistor of 10k at port P0.
My hardware is working above the 2000h address perfectly, but now again, my question is, I want to store password #AAh value at address 0100H and then as per to read it. It would be interesting to know how you've determined that your hardware is working. But it can't do. Please send me suggestion for to read the data #AAH at address 0100H and send it to port P0.
I'm waiting for your reply. My sample program is here, DPL EQU 82H DPH EQU 83H FCF EQU 0B1H ORG 0000H MOV DPTR,#TESTAREA2 LCALL E_RASE ;Routine for to erase data at address 0100H MOV DPTR,#TESTAREA2 MOV A,#0AAH LCALL W_RITE ;Routine for to write data #0AAH at address 0100H MOV DPTR,#TESTAREA2 LCALL R_EAD ;Routine for to read data at address 0100H ORG 0100H TESTAREA2: DB 0,0 ORG 03F00H MOV 080H,#0FFH MOV 0A0H,#0FFH stop: MOV DPTR,#0100H ;Reading data at address 0100H CLR A MOVC A,@A+DPTR MOV 080H,A MOV 0A0H,#11111100B LCALL DELAY LCALL DELAY SJMP STOP E_RASE: PUSH 0A8H CLR 0AFH MOV R1,#08H ANL FCF,#0FCH ; enable boot sector LCALL 01FF0H ORL FCF,#001H ; enable boot sector POP 0A8H LCALL DELAY LCALL DELAY RET W_RITE: PUSH 0A8H CLR 0AFH MOV R1,#02H ANL FCF,#0FCH ; enable boot sector LCALL 01FF0H ORL FCF,#001H ; enable boot sector POP 0A8H LCALL DELAY LCALL DELAY RET R_EAD: PUSH 0A8H CLR 0AFH MOV R1,#03H ANL FCF,#0FCH ; enable boot sector LCALL 01FF0H ORL FCF,#001H ; enable boot sector POP 0A8H LCALL DELAY LCALL DELAY RET DELAY: MOV R5,#10 LD2: MOV R6,#100 LD1: MOV R7,#100 LD: DJNZ R7,LD DJNZ R6,LD1 DJNZ R5,LD2 RET END It would be much easier to help you if you'd format your code as suggested in the website instructions. More comments as to your intentions with each code segment are better than fewer. RE |
| Topic | Author | Date |
| P89V51RD2 IAP and ISP writeup | 01/01/70 00:00 | |
| e-mail it to andy ayre | 01/01/70 00:00 | |
| thanks for replay | 01/01/70 00:00 | |
| once again readout data | 01/01/70 00:00 | |
| I'll look at it tomorrow | 01/01/70 00:00 | |
| case sensitive assembler | 01/01/70 00:00 | |
| Read Data....from address | 01/01/70 00:00 | |
| What kind of programmer? | 01/01/70 00:00 | |
| never saw a chip that .. | 01/01/70 00:00 | |
| Maybe not now ... | 01/01/70 00:00 | |
| Before 2000h perfect working | 01/01/70 00:00 | |
| no bootloader | 01/01/70 00:00 | |
| Why at 0x0100? | 01/01/70 00:00 | |
| p89v51rd2bn | 01/01/70 00:00 | |
| Have you told us everything? | 01/01/70 00:00 | |
| using IAP routine | 01/01/70 00:00 | |
| I'd suggest you focus on the datasheet | 01/01/70 00:00 | |
| datasheet | 01/01/70 00:00 | |
| I love these replies | 01/01/70 00:00 | |
| NXP practice | 01/01/70 00:00 | |
| not in this case | 01/01/70 00:00 | |
| Getting Solution | 01/01/70 00:00 | |
| HUH???? | 01/01/70 00:00 | |
good response | 01/01/70 00:00 | |
| have you read my last two posts? | 01/01/70 00:00 |