Hi,
Firstly thanks for reading this.
I have the AXE022 proto board running fine. Also I have just made a 28X1 board which is also working fine. Both have 4MHz resonators as default.
When I change the resonator on either board from 4MHz to 8MHz nothing seems to change!
i.e. LED flash rate using pause command is unchanged, and AXE022 to AXE033 LCD display using serout at 2400 still works!
I have soldered in the 8MHz resonator into the AXE022 proto board behind the existing 4MHz resonator. After powerdown and change over J4 and J5 (swaps 4MHz and 8MHz resonator connections into PIC) it still works as if running at 4MHz.
It did occur to me that the setfreq directive might make a difference here, but surely this is a hardware change and the s/w should run at double speed (pause is listed as being affected by resonator speed in the manual).
It would appear that the external resonator is being ignored and the devices are using internal ~4MHz whatever.
Just wondering if anyone with more experience of using PICAXE with different speed resonators could throw some light on this? It would really help!
Regards
Michael
Firstly thanks for reading this.
I have the AXE022 proto board running fine. Also I have just made a 28X1 board which is also working fine. Both have 4MHz resonators as default.
When I change the resonator on either board from 4MHz to 8MHz nothing seems to change!
i.e. LED flash rate using pause command is unchanged, and AXE022 to AXE033 LCD display using serout at 2400 still works!
I have soldered in the 8MHz resonator into the AXE022 proto board behind the existing 4MHz resonator. After powerdown and change over J4 and J5 (swaps 4MHz and 8MHz resonator connections into PIC) it still works as if running at 4MHz.
It did occur to me that the setfreq directive might make a difference here, but surely this is a hardware change and the s/w should run at double speed (pause is listed as being affected by resonator speed in the manual).
It would appear that the external resonator is being ignored and the devices are using internal ~4MHz whatever.
Just wondering if anyone with more experience of using PICAXE with different speed resonators could throw some light on this? It would really help!
Regards
Michael