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Hi, I am using the above development board for my final year project and now i am trying to program On-Chip PROM of 68hc711e9 microcontoller, which is installed in U1(ic socket)of the development board. i have followed the guideline as provided together with the board, but it can't be programmed at the final step. i have copied that guideline as shown below in order to explain my problem to you clearly. 1. Change the start address of your program to $D000 which is the beginning of the On-Chip PROM in a 68HC711 device. 2. Change the Reset Vector in your code to $D000 then re-assemble it. 3. Apply a 12V DC programming voltage to the VPP connector. 4. Install a jumper in the PROG position (1-2). 5. Start the programming interface (AX11E for DOS or AXIDE for windows). 6. Select "Configure Processor" or [Configure] and follow the onscreen instructions. Make sure ROMON is enabled and if not configure it to be so. 7. Select "Program Internal Memory". If using the windows utility select [Program] and make sure On-Chip EPROM is selected. 8. At the file prompt enter your newly assembled S19 file. 9. Click OK then follow the onscreen instructions. 10. When finished programming, remove the jumpers as instructed by the program. The problem occur at step [9], where i am trying to program the program codes into memory, and the screen is displayed with an error message of "timeout waiting to receive bootloader response character". what that message mean? is it a cable connection error? for your information, at step [6], i have enabled the ROMON and the "Configure" dialog box can be displayed, which mean that there should not have any connection error between the board, microcontroller and the cable. besides, the port setting are 8 data bit, 1 stop, no parity,and 9600 baud rate. what should i do to solve that problem? thank you. Regards, chonchet |
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CME-11E9-EVBU [MC68HC711E9]
Started by ●October 18, 2004
Reply by ●October 18, 20042004-10-18
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----- Original Message ----- From: "chonchet1" <> To: < > I am using the above development board for my final year project and > 1. Change the start address of your program to $D000 which is the > beginning of the On-Chip PROM in a 68HC711 device. That is assuming your code actually starts at $D000, otherwise, whatever address your code starts executing. (Canned instructions are sometimes more trouble than help.) > 2. Change the Reset Vector in your code to $D000 then re-assemble it. Same as [1]. > 3. Apply a 12V DC programming voltage to the VPP connector. I don't know this board but I believe it means to first connect the 5V, then the 12V. > The problem occur at step [9], where i am trying to program the > program codes into memory, and the screen is displayed with an error > message of "timeout waiting to receive bootloader response > character". what that message mean? is it a cable connection error? It means there was no BREAK received from the board. So, again, check your power connections. > microcontroller and the cable. besides, the port setting are 8 data > bit, 1 stop, no parity,and 9600 baud rate. Again, I don't if the software does this automatically, but for boot mode (for an 8MHz device) the correct setting is 1200 baud, not 9600. > chonchet |
