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I2C_write (data_l | 0x08); //enable=0 and rs =0

 
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czar



Joined: 05 Jan 2020
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I2C_write (data_l | 0x08); //enable=0 and rs =0
PostPosted: Sun Jan 05, 2020 1:44 am     Reply with quote
I'm working with I2C LCD but don't understand this line, why the | in the parameters of the function I2C_write?
Ttelmah



Joined: 11 Mar 2010
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PostPosted: Sun Jan 05, 2020 3:27 am     Reply with quote
| is 'or'.
It's being used here to set bit 3 in the number fed to the write function. Why,
would be a matter of looking at the data sheet for the device involved.
czar



Joined: 05 Jan 2020
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PostPosted: Sun Jan 05, 2020 9:32 pm     Reply with quote
Ttelmah wrote:
| is 'or'.
It's being used here to set bit 3 in the number fed to the write function. Why,
would be a matter of looking at the data sheet for the device involved.


Thanks Ttelmah!
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