Greetings,
I'm working on mcp9800 library this morning, and I've run into
something that is confusing to me. I've looked at the JALV2 manual and
narrowed the issue down to a short example. I don't know whether I'm
just confused (likely), or possibly have run into a compiler problem?
In the example below, it seemed to me that I should use the 'cast to
word' to make the code more readable and my intentions clear (the
library returns a byte but I need a word instead). But when I do, the
value returned from the i2c library is ignored, and instead, variable
'b' is explicitly set to zero. If I remove the 'cast to word' the
program runs correctly and no warning is given by the compiler.
I'd appreciate any insights.
Thank you,
William
include 18f2680
pragma target clock 20_000_000
pragma target OSC HS
pragma target XINST disabled
pragma target WDT disabled
pragma target LVP disabled
pragma target MCLR external
const word _i2c_bus_speed = 1
const bit _i2c_level = true
include i2c_hardware
var word a
var word b
var byte c
forever loop
a = word( i2c_receive_byte(true) )
b = a
c = byte(b & 0xff)
portB = c
end loop
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