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Difference between Serial and TTL communication

Ajay s

Hi,
I am trying to send data from one controller to another directly ie without converting it into serial.
Now when i send the data using 232 it is being received alright and the out put is also displayed.
i am using putchar and getchar.
but when i try this by directly connecting the Tx of first controller to Rx of next the data is either not being read properly or not being transfered properly. I'm just not getting what is going wrong. it should work i think i have even made the ground common for both the controllers.

Thanks
Ajay.

Parents
  • 0 in reply to luc vercruysse

    Hi Luc,

    I am using 4066 a switch IC to give out put to the 232 now the problem is i'm using both the ports of 232. i use one to communicate to a device and the other to communicate with the PC. but now i am trying to use another device instead of PC this device dose not have a serial port which is why i want to use the logic signal, and the 232 still is in picture.

    Thanks
    Ajay

Reply
  • 0 in reply to luc vercruysse

    Hi Luc,

    I am using 4066 a switch IC to give out put to the 232 now the problem is i'm using both the ports of 232. i use one to communicate to a device and the other to communicate with the PC. but now i am trying to use another device instead of PC this device dose not have a serial port which is why i want to use the logic signal, and the 232 still is in picture.

    Thanks
    Ajay

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