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awinni
Germany
2 Posts |
 Posted - 11/24/2008 : 22:08:05
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Hi,
I have an EON 29F040A PLCC and a True USB Programmer and installed the actual version of the software because in the old version I was not able to find the EON 29F040A.
In the actual version I found it but the software doesnt recognize the ID of the PLCC correctly. It just says 7F7F. I think its a software problem because it just looks at two bytes for the ID instead of the four.
When I tell the software to use the other PLCC type (.....NT) of EON it recognizes the ID correctly but I only can access the first 256kb of the PLCC.
I also tried to use the Generic 29F040B but I get the same problem. It says that the ID is 7F7F and I cant do anything.
I think its a software problem because it recognizes the ID correctly when I use the wrong PLCC type (.....NT) in the software.
Could you please help me. |
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| Reply #1
ZLM
2945 Posts |
Posted - 11/25/2008 : 10:40:46
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Please try to add those two lines into devices.txt file:
Name="EN29F040A(Test#1)",ID="7F1C7F04",Class="29F002NT",Category="FLASH",MFG="Eon Silicon",CodeSize="524288";
Name="EN29F040A(Test#2)",ID="XXXX",Class="29F040B",Category="FLASH",MFG="Eon Silicon";
Restart the software and try on both devices EN29F040A(Test#1) and EN29F040A(Test#2) to see which one works.
The EN29F040A(Test#1) is to solve size issue and use ..NT class.
The EN29F040A(Test#2) is to skip the ID check and use original class.
Please post your testing result here. Thanks. |
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| Reply #2
awinni
Germany
2 Posts |
Posted - 11/26/2008 : 12:06:24
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Thanks for your reply.
I tried those two tests.
At Test#1 it recognized the right ID at ID check. I read the data but after reading the data from 0x000000 to 0x03ffff was the same as in 0x040000 to 0x07ffff.
After that I erased the PLCC and tried to write the data on it.
After 50% of writing I get the message "write failed". I think its because it only accesses the first 256kb.
Here is the log of that:
ID check OK
Erasing...
Elapsed time: 8.31 seconds.
Erase completed.
ID check OK
Time:20:51:16
Writing...
Elapsed time: 30.92 seconds.
Time:20:51:47
Write failed, Address=0x040000, Buffer=0x49 Device=0xC4
Write failed
At Test#2 again I get the ID failed and it says that the ID is 7F7F.
I tried to read the data and there was just something starting at 0x040000
After that I erased the chip and wrote the data and...
it worked!!!!!!
I read the data to be sure and compared it with the data I wrote and it was the same.
Many many thanks to you ZLM, I am very happy! |
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| Reply #3
ZLM
2945 Posts |
Posted - 11/28/2008 : 00:34:01
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Thank for the update.
I think it only need to fix the ID issue in the original class for the EN29F040A.
This will be fixed in the next software release. |
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EON 29F040A problem
