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+--- Thread: WP34S printing functions (/thread-14931.html)
WP34S printing functions - MeindertKuipers - 05-05-2020 08:49 AM
I am testing the modified HP IR Red Eye receiver connected to a PC for printer emulation, and this works great with the DM41X. Now looking to do some more testing with the WP34S, does someone have any programs which makes (heavy) use of the IR printer? Best to have some graphics
RE: WP34S printing functions - Paul Dale - 05-05-2020 10:13 AM
Program lines with any of the special characters the 34S has are printed as graphics. The constants menu items and quite a few functions use them.
Enter a long program and print it.
Pauli
RE: WP34S printing functions - MeindertKuipers - 05-05-2020 02:16 PM
And now things get interesting ...
Set DLAY to zero. Obviously the nearest long program to print is the library, right? So when attempting to print the library, it comes up with a message "reset" after printing 30-40 lines succesfully (using IR and the printer emulator).
Next test with DLAY set to 01 (what is the default BTW?): works fine with IR, printed all 1500+ lines pretty quickly. So DLAY should no tbe set to zero I guess?
The WP34S emulator prints the complete library (1509 lines, printer emulator over UDP) without issues, even with DLAY set to zero.
And what a great piece of software the printer emulator is, thanks to Christoph Giesselink
RE: WP34S printing functions - BobVA - 05-05-2020 08:30 PM
I happened to try that exact thing this morning (delay = 0) and had the same issue, "RESET". Perhaps that value may wind up as a divisor somewhere in the code?
RE: WP34S printing functions - Paul Dale - 05-05-2020 10:30 PM
Does the reset happen when running on batteries or from an external supply?
My experience is that most resets are due to battery voltage and setting the delay to zero will place additional load on the battery.
Pauli
RE: WP34S printing functions - MeindertKuipers - 05-06-2020 07:34 AM
(05-05-2020 10:30 PM)Paul Dale Wrote: Does the reset happen when running on batteries or from an external supply?
My experience is that most resets are due to battery voltage and setting the delay to zero will place additional load on the battery.
Pauli
It was certainly running on batteries, will test this evening with an external supply
RE: WP34S printing functions - BobVA - 05-06-2020 02:41 PM
(05-06-2020 07:34 AM)MeindertKuipers Wrote: It was certainly running on batteries, will test this evening with an external supply
On battery here as well (new from the package).
RE: WP34S printing functions - MeindertKuipers - 05-06-2020 05:35 PM
With an external supply (at 3.38V connected to the battery terminals) still the same result, printing a program from the library (in program mode, showing LBL'EI2') while DLAY is set to zero. There is no voltage drop, and current is under 10 mA (my little supply is not capabale of measuring less).
RE: WP34S printing functions - Paul Dale - 05-08-2020 01:05 AM
Hmmm, I've no idea.