Search found 13 matches

How ??
There are several ways but we need to know which PIC you have to use.
Depending on the PIC, there are different internal peripherals that can be used.

Also you'll need to know how to 'puls ...

38kHz IR signal transmitter

Hello friends.
I am working on a IR signal circuit. I want to control my Samsung TV. But i am confused.
I have a 20mHz external crystal. How will i create 38kHz car ...

Thank you very much friends.

Hello friends,
I have a circuit to print pcb. The circuit has a LDR. I know all components model number except LDR. How can i understand the model of LDR ? I will send the circuit with BOM list to C ...

You just send a message back.

The whole point of this system is that provided the RS485 is properly
configured so all the transceivers are in receive mode when not sending
any device on the bus ...

Thank you Master.
One problem was solved. Another point I have to solve is I can not take feedback from device. Do you have any advice about that?

quick comment...

your code....
BYTE next_in;
BYTE next_out;

change to ...
BYTE next_in=0;
BYTE next_out=0;

You should ALWAYS preset any variable to a KNOWN value.
Pretty sure that RAM ...

Ex_SISR, stores the incoming data into a circular buffer.

In your main code, a byte is available when bkbhit says there is a byte.
You would need to read the bytes when they exist into a message ...

again.....
Have a look at ex_sisr.c, the CCS supplied program that shows how to receive data using the RDA_ISR and a buffer.

It'll be in the EXAMPLES folder....

Thank you for your advice temtro ...

An RS232 interrupt means _one_ byte is available for you to receive.
Just one.

You can't sit in the interrupt loading data.
The interrupt should load just one byte and increment the count and e ...

You are misunderstanding how get/send message works.

get doesn't 'look' for a specific value, it receives a message. You then have
to decode this.

The value passed are pointers to where you wan ...

Hello friends,
I control a rs232 controlled device (a hdmi switcher) via rs232 protocol. While i am sending the code, everything is fine. But when i sent the code, the device send the feedback data t ...

Hello friends,

I am working on a project that has 4 circuits. And they will communicate with each other. I have started from basic with two circuits. I am using standard <rs485.c> library.
...