Serial Com. Between Pics Diffferent OSC - Electronic Circuits Projects Diagrams Free

serkanc · 27th May 2008, 07:17 PM

Hi.

I want to make serial communication between 16F628A with 4MHz, and 18F2550 with 20MHZ. I'm using Ppb, with commands serin and serout, i cannot receive what I sent. But If I change the pic 18F2550 with an 16F84A 4 Mhz, serial communication works without any problem. I'm using Also Defince OSC parameter both of them. Is there anything that I should do ?

**Nigel Goodwin** · 28th May 2008, 08:08 AM

Sounds like you're doing something wrong with the 18F2550?, oscillator frequency shouldn't make any difference, as long as you're setting everything correctly.

gramo · 28th May 2008, 12:37 PM

what baud are you using for the Serin/out initialization

serkanc · 28th May 2008, 02:43 PM

I'm using same commands as the other one. 2400 is the baud rate.

donniedj · 29th May 2008, 06:11 AM

If you do get this worked out and if permissible, please raise the board rate. Seeing 2400 is like seeing a dead can sprawled out in the road eyes popped out and guts stretched to a disturbing length. Just makes me want to vomit.

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27th May 2008, 07:17 PM	(permalink)
serkanc	Serial Com. Between Pics Diffferent OSC Hi. I want to make serial communication between 16F628A with 4MHz, and 18F2550 with 20MHZ. I'm using Ppb, with commands serin and serout, i cannot receive what I sent. But If I change the pic 18F2550 with an 16F84A 4 Mhz, serial communication works without any problem. I'm using Also Defince OSC parameter both of them. Is there anything that I should do ?

28th May 2008, 08:08 AM	(permalink)
Nigel Goodwin	Sounds like you're doing something wrong with the 18F2550?, oscillator frequency shouldn't make any difference, as long as you're setting everything correctly. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

28th May 2008, 12:37 PM	(permalink)
gramo	what baud are you using for the Serin/out initialization __________________ Spency. PIC Micro's - Your mind is the limit PIC's and interfacing with other devices - a PIC Basic Guide @ digital-diy.net

28th May 2008, 02:43 PM	(permalink)
serkanc	I'm using same commands as the other one. 2400 is the baud rate.

29th May 2008, 06:11 AM	(permalink)
donniedj	If you do get this worked out and if permissible, please raise the board rate. Seeing 2400 is like seeing a dead can sprawled out in the road eyes popped out and guts stretched to a disturbing length. Just makes me want to vomit. Last edited by donniedj; 29th May 2008 at 06:12 AM.