[question]read out hex file which is fill with 0x3FFF
skcks opened this issue · comments
I trying to read out hex from pic16f887,but get nothing except 0x3FFF；
23:42:57.649 -> OK
23:42:57.649 -> DeviceID: 2082
23:42:57.649 -> DeviceName: pic16f887
23:42:57.684 -> ProgramRange: 0000-1FFF
23:42:57.719 -> ConfigRange: 2000-2008
23:42:57.719 -> DataRange: 2100-21FF
23:42:57.753 -> ConfigWord: 3FFF
23:42:57.753 -> .
./ardpicprog -d pic16f887 -p /dev/ttyS5 -o pic.hex
/dev/ttyACM0
Ardpicprog version 0.1.2, Copyright (c) 2012 Southern Storm Pty Ltd.
Ardpicprog comes with ABSOLUTELY NO WARRANTY; for details
type ardpicprog --warranty'. This is free software, and you are welcome to redistribute it under certain conditions; type ardpicprog --copying' for details.
Initializing programmer ...
Device pic16f887, program memory: 8192 words, data memory: 256 bytes.
Reading program memory,
reading data memory,
reading id words and fuses,
done.
There are two possibilities that I can think of.
The first is that you haven't programmed the chip yet. The default for flash memory is for bits to be in the 1 state - they can only become 0 when programmed. You may simply be reading the default memory contents.
The second is that the Arduino is not communicating with the chip properly - the data line is somehow being pulled high and so it only ever reads 1 bits. Check the programming voltage and the ICSP connections.