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Storing and transmitting char const

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hithesh123

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I am designing a keyboard key emulator.
Each key on the keyboard has a hex code. I can store this in a header file as constants. For example const char A=0x1C;

When I call a function with text string as the passing parameter, I want to transmit the hex codes corresponding to the string characters.
For example, if I call the function trans_string(ABCD)

I want this function to transmit hex codes corresponding to the alphabets A, B , C and D.
 

OK. When you press A, B, C, D then you want too transmit 0x1C, 0x1D, 0x1E, 0x0F say. You can use UART to send data. trans_string() function will have a switch(key) statement. Depending upon the key pressed it will send the corresponding code for the key stored in a array.
 

jayanth.devarayanadurga said:
OK. When you press A, B, C, D then you want too transmit 0x1C, 0x1D, 0x1E, 0x0F say. You can use UART to send data. trans_string() function will have a switch(key) statement. Depending upon the key pressed it will send the corresponding code for the key stored in a array.
Click to expand...

I managed to accomplish that part. But I have new problem now.
The hex codes need to go out bit by bit.
I cannot use any built in functions like UART. I have bit bang.
But don't know how to send each bit of the hex data.
 

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