[General] Writing to MCU data port

[hithesh123]

I have a char array of parity bits, to be written to MCU port out.
The MCU port is called data1. I am trying to write array[2] to data1

data1=array[2];

array[2]='0' , But when I step thru the code, data1 becomes 1 after the above assignment.
I have both 0s and 1s in the array. But no matter what the array index is, data1 always becomes 1 after I execute
data1=array[2];
Can 'char' data type be assigned to port pins?

 

[jayanth.devarayanadurga]

Mention compiler used. Have you defined data1 as some PORTx? Which MCU are you using?

 

[hithesh123]

Mention compiler used. Have you defined data1 as some PORTx? Which MCU are you using?

Compiler is Keil C51.
MCU is Silabs C8051F120
data1 is Port1.1(sbit data1 = P1^1

 

[jayanth.devarayanadurga]

Each element of your character array is one byte wide. How do you think it will work if byte is assigned for a bit like P1.1?

 

[andre_luis]

I have a char array of parity bits, to be written to MCU port out...

Do you want to send this data serially to MCU port, or in parallel mode ?


+++

 

[hithesh123]

Do you want to send this data serially to MCU port, or in parallel mode ?


+++

I want to send the data serially.

 

[jayanth.devarayanadurga]

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Code C - [expand]
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mask = 0x01
for(i = 0; i < 8; i++){
    if(array[2] & mask)
        data1 = 1;
    else
        data1 = 0;
    
    mask = mask << 1;
}

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Code C - [expand]
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mask = 0x01
for(i = 0; i < 8; i++){
    (array[2] & mask)? data1 = 1 : data1 = 0;
    
    mask = mask << 1;
}

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