gdinu0
Newbie level 2
hi
I have a problem interfacing RF module(433Mhz ask) to 8051(atmel 89C51).
I am using two micro controllers
First: I have written a simple program to transmit 'A' serially if P1^0 is high in transmitter micro controller(uc1). and at receiver micro controller(uc2) to take serial data and put in on P1 of (uc2). Baud rate 4800
I have connected TX of transmitter to Rx of receiver micro controller(uc2) directly for testing.
I have used different power supplies for each microcontroller.
problem1:I am not receiving data on uc2
If I use a common ground then I am receiving the data i.e P1(0x41=='A'). how can i get the data without using common ground??
I have interfaced RF module with common ground
Problem2: I am not getting the output
I have checked the rf module with help of digital CRO.
Then I got to know that transmitter and receiver are working correctly and i am receiving 'A' at the receiver 01000001(0x41). But the problem is that as soon as I connect receiver output to Rx pin the receiver gets blank(I checked with CRO it reads no signal).this is my problem please help me this is a part of my final project if any one knows anything please reply me back.
I have a problem interfacing RF module(433Mhz ask) to 8051(atmel 89C51).
I am using two micro controllers
First: I have written a simple program to transmit 'A' serially if P1^0 is high in transmitter micro controller(uc1). and at receiver micro controller(uc2) to take serial data and put in on P1 of (uc2). Baud rate 4800
I have connected TX of transmitter to Rx of receiver micro controller(uc2) directly for testing.
I have used different power supplies for each microcontroller.
problem1:I am not receiving data on uc2
If I use a common ground then I am receiving the data i.e P1(0x41=='A'). how can i get the data without using common ground??
I have interfaced RF module with common ground
Problem2: I am not getting the output
I have checked the rf module with help of digital CRO.
Then I got to know that transmitter and receiver are working correctly and i am receiving 'A' at the receiver 01000001(0x41). But the problem is that as soon as I connect receiver output to Rx pin the receiver gets blank(I checked with CRO it reads no signal).this is my problem please help me this is a part of my final project if any one knows anything please reply me back.