RF communication between pic16f877a and PC

[N1nja]

can I directly connect max232 Tx pin to transmitter and receive the data at pic end using a receiver,or I need a Pic at PC end also.

 

[bigdogguru]

can I directly connect max232 Tx pin to transmitter and receive the data at pic end using a receiver,or I need a Pic at PC end also.

To establish communications from a PIC to a PC using the RS-232 PORT on PC.

You must correctly connect a MAX232 to the PIC, then the RS-232 TX, RX and GND Pins can be connected to an RS-232 cable or to the PC RS-232 PORT.

PIC RS232

BigDog

 

[N1nja]

To establish communications from a PIC to a PC using the RS-232 PORT on PC.

You must correctly connect a MAX232 to the PIC, then the RS-232 TX, RX and GND Pins can be connected to an RS-232 cable or to the PC RS-232 PORT.

PIC RS232

BigDog

I just want a one way communication from pc to pic,not the other way.I want to transmit data from pc serial port to a pic wirelessly.can this be achieved without using a pic on pc end.

 

[bigdogguru]

I just want a one way communication from pc to pic,not the other way.I want to transmit data from pc serial port to a pic wirelessly.can this be achieved without using a pic on pc end.

Yes, but you still have to use the MAX232 transceiver on the PIC end, you cannot attach the PIC pins directly to a RS-232 Port. If you just want to receive data from the PC to PIC you only need to connect the one line and GND.

BigDog

 

[emresel]

I want to transmit data from pc serial port to a pic wirelessly

What kind of RF transmitter do you plan to use? You can attach RF tx to you PC port over a MAX232 cct as well. You can send commands to RF device from a PC terminal tool (like hyperterminal etc.)

 

[bigdogguru]

What kind of RF transmitter do you plan to use?

Emresel,

Brings up a good point. What type of RF TX/RX modules do you plan to use in your design?

You may only need a MAX232 between the TX module and the PC.

Most TX/RX modules have TTL I/O and do not require a MAX232 when connecting to a microcontroller.

BigDog

 

[N1nja]

What kind of RF transmitter do you plan to use? You can attach RF tx to you PC port over a MAX232 cct as well. You can send commands to RF device from a PC terminal tool (like hyperterminal etc.)

Thanks for replying.I was asking this only.will give it a try.Thanks again

---------- Post added at 12:02 ---------- Previous post was at 12:01 ----------

Emresel,

Brings up a good point. What type of RF TX/RX modules do you plan to use in your design?

You may only need a MAX232 between the TX module and the PC.

Most TX/RX modules have TTL I/O and do not require a MAX232 when connecting to a microcontroller.

BigDog

This solves the problem of using two pic microcontrollers.Thanks for reply.