How to make RX and TX faster ?

[bianchi77]

Friends,

I tried to interface serial RS232 as a transmitter (PC) and mcs51 as a receiver (RX) with 433Mhz, 2400 Baud,
MCS51 is receiving data I have sent, but the response is very slow, why is that ?
Can I put antenna to extend the distance ?

How can I put antenna ? and how can I make the response faster ?

In the receiver :

	switch(serial_char)
	       {
		   
				 case 'a': //forward car
				      forward_car();
					 delay_100(150);
					 
					 stop_car();
					 delay_100(150);
					 forward_car();
		             break;

I used these modules


currently I'm using putty for transmitting....
Any ideas ?

thanks

 

[Ivan-Holm]

why are you using delay in a Switch Case ? if you know how switch Case works with static state Diagram you don't have to use delay. and Delay also block other function when it use delay function

I think that the transmitter has a limiter of bandwidth that why you can't send faster, but look in the data sheet. also the bandwidth formula if you can get the input amplitude smaller then the frequency modulation also will drop in FM mode

 

[milind.a.kulkarni]

One of way is to use higher baud rate....as Ivan said ...remove all nu-necessary delay in your code ....Also optimization of code will help you bit ....

Good Luck

 

[bianchi77]

One of way is to use higher baud rate....as Ivan said ...remove all nu-necessary delay in your code ....Also optimization of code will help you bit ....

Good Luck

ok, thanks for your advice...