CAL_UART and FDTI

[mikn]

I have PIC24F connected to FDTI FT232 and connected to PC (reading with terminal software).
When I try to send codes from 1 to 255 as a test to FDTI I receive a mess in terminal. Every time it's different.
Didn't find any examples how to work with CAL_UART, but seems it's quite easy. What's wrong?

[Jordy101091]

Maybe your terminal program translates the received information to ASCII characters.
I think the best way to do this is to send all information as a string, so you need to convert you variable i to string e.g. i_str.

Hope this helps you.

Regards Jordy

[mikn]

I've tried to send just 1 byte and it receives different values every time.

[medelec35]

Hi mikn,
It looks like for some reason the baud rate is different as intended.
Looks like a timing issue.

Can you check to see if hardware is running at the correct frequency?
Before starting any new project It's always a good idea to set up a 1Hz flasher.
I.e
Do:
A0=1
Delay 500ms
A0=0
Delay 500ms
Loop while 1

Do the baud rate of terminal program and settings of uart properties the same.

I would recommend setting both up at say 9600 for testing purposes.

If I can find my PIC24F chip, I can carry out some tests, but that is not 100% definite.

Martin

[mikn]

Did test with LED at 16mhz:
FRC - blinks twice slower
FRC with PLL - blinks normal
FRC with Prescaler - blinks 4 times slower

I thought that normal setting is FRC with PLL, but... when I change to 32MHz and set FRC with PLL it blinks twice slower.
Seems like it's the same problem with oscillator like I have in my FAT and ADC project http://www.matrixmultimedia.com/mmforum ... 54&t=14494.

UPD: Solved.
Changed Return to 16 bits instead of 8 bits and it worked.

PS What do these parameters mean: Return, Echo, Interrupt?