Where is the 2nd h/w uart on a zx24n ?

[FFMan]

can any pins be used to make use of the 2nd h/w uart on the zx24n or are there specific pins ?

I can't locate any documentation giving the answer.

thanks

[pdubinsky]

Com2 pins are hardware assigned. See USART chart on page 17 of the ZBasic System Library Reference Manual.

P

[FFMan]

great thanks

I see an interesting little foot-note that appplies to zx24n of:-

¹For these devices, the Com1 signals are logically inverted, the Com2 signals are not, however

so does that mean that if i convert code from zx24 using a software usart that i need to invert the signals or does does this mean the h/w usart behaviour is the same as the s/w usart ?

[pdubinsky]

[FFMan]

ok i see - so i can't set/change the invert on a h/w usart but i can on a s/ware one.

So its possible I will need to add h/w to invert my signals if the h/w usart is opposite to my device (a GPS module). I need to go take a look....

[dkinzer]

[FFMan]

so, if i open my current sw port with a mask of

by_Mask=bx00001000

will i need external inverting h/w or not ?

thanks

[dkinzer]

[FFMan]

thanks don

what i was asking was that given the mask in my previous post works with my gps on a s/w channel, do you think i will be able to use a h/w channel without inverters ?

i ask because the project i'd like to modify to use he zx24n doesn't have any room for an inverter.

thanks

[dkinzer]