Reading Device ID from within PBP

[mister_e]

mmm, i think some part of it are available... but for 18Fs

i think you refer to the following...
http://www.picbasic.co.uk/forum/showthread.php?t=4093

[Charles Linquis]

Thanks. That is what I was looking for. I only work with 18F parts, so this should do it.

Thanks to you (and Darrel)

Charles Linquist

[mister_e]

I just opened the 18F4550.inc file...look what you got at the end of...

_DEVID1          EQU  H'3FFFFE'
_DEVID2          EQU  H'3FFFFF'

_IDLOC0          EQU  H'200000'
_IDLOC1          EQU  H'200001'
_IDLOC2          EQU  H'200002'
_IDLOC3          EQU  H'200003'
_IDLOC4          EQU  H'200004'
_IDLOC5          EQU  H'200005'
_IDLOC6          EQU  H'200006'
_IDLOC7          EQU  H'200007'

Sure there's something to do with it...

[mister_e]

yes indeed that was simple to read the PIC ID using one part of the Darrel's code and a 18F4680

    '   READING pic18f4680 DEVICE ID
    '
    DEFINE OSC 20
    DEFINE LOADER_USED 1
    DEFINE HSER_RCSTA 90h ' Enable serial port & continuous receive
    DEFINE HSER_TXSTA 24h ' Enable transmit, BRGH = 1
    DEFINE HSER_SPBRG 129 ' 9600 Baud @ 20MHz, 0.16%
    DEFINE HSER_CLROERR 1 ' Clear overflow automatically
    ID1 var byte
    ID2 var byte
    GOTO START

@  #include "RTconfig.inc"

START:  
    @ ReadConfig?CB _DEVID1, _ID1
    @ ReadConfig?CB _DEVID2, _ID2
    HSEROUT ["DEVID1=",HEX ID1,"    DEVID2=",HEX ID2]
    STOP

Serial communicator show...

DEVID1=82    DEVID2=0E

Using a my programmer to read the device, i have...

L0100: >> 24.02.2007, 13:10:13
L0101: Reading device: Microchip PIC18F4680.
L0102: Device insertion test ...
L0103: Checking device ID ...
L0104: Device ID: DEVID2=0Eh  DEVID1=82h
L0105: Reading device ...
L0106: Verifying device at VCCmax. ...
L0107: Verifying device at VCCmin. ...
L0108: Reading device - done.
L0109: Elapsed time: 0:00:30.6
L0110: Buffer checksum in range of device [0h..7FFFh]: 00FD3D23h

Somehow interesting. i bet you will be able to change and create your own device ID in the ID locations at run time as well. Nice place to save the software version...

[nomad]

Along with erasing osccal values, some of the free software or maybe a glitch has managed to erase the device id as well. i have a few pics that show up as unknown. I'm quickly becoming an expert on what NOT to do. lol.