hserin and sms controller

[Ioannis]

The Hserout/Hserin will NOT work with these circuits! Be careful also not to destroy your phone with this 3.3/5 volt adapters. I would suggest to test with the Serout2/Serin2 commands in invert mode.

Hserout/Hserin pressume that you have included inverters in your circuit (like the common MAX232, which obviously there are not).

I would use a 3.3 driver for the UART like MAX3232 for example.

Ioannis

[xxxxxx]

The Hserout/Hserin will NOT work with these circuits! Be careful also not to destroy your phone with this 3.3/5 volt adapters. I would suggest to test with the Serout2/Serin2 commands in invert mode.

Hserout/Hserin pressume that you have included inverters in your circuit (like the common MAX232, which obviously there are not).

I would use a 3.3 driver for the UART like MAX3232 for example.

Ioannis

but it's working, i put a hex inverter 74LS04 and inverted the signal two times, 1 x 2 times logical not give 1, and put one zener didode 2v7 in tx line of phone!!!!so it's protected from over voltage!!!

[ScaleRobotics]

Hserout/Hserin pressume that you have included inverters in your circuit (like the common MAX232, which obviously there are not).

I would use a 3.3 driver for the UART like MAX3232 for example.

The above was an older post. Since then, a way to invert the hardware serial port has been spotted in the 400+ page datasheets of the PIC18 devices.......
See http://www.picbasic.co.uk/forum/showthread.php?t=10361 for a little more information.

To command it to do so:

	BSF BAUDCON,RXDTP
	BSF BAUDCON,TXCKP

Pretty cool stuff. I have tried it on a few projects, including a bootloader, and it works great. Nice to eliminate the max232 hardware when you can.