How many bits does the ReadInternalTemp IT_RAW_H command return? 8 or 10? The PIC instructions in AN1333 seem to imply that either is possible, but the PICAXE manual entry for this command does not make any mention of this, so I can't tell what the PICAXE firmware has implemented.
I understand that this command is crude, but crude is all I need for my present task, which needs to give some indication of temperature from -20 F to maybe +120 F. I'd just like to get some sort of output that I can do a single point calibration on at room temp and be approximate both higher and lower than that.
Yes, I understand that the number returned is the voltage above ground of 4 PN junctions that hang from Vcc. My Vcc will be zener regulated, so that should be fairly stable.
thanks,
I understand that this command is crude, but crude is all I need for my present task, which needs to give some indication of temperature from -20 F to maybe +120 F. I'd just like to get some sort of output that I can do a single point calibration on at room temp and be approximate both higher and lower than that.
Yes, I understand that the number returned is the voltage above ground of 4 PN junctions that hang from Vcc. My Vcc will be zener regulated, so that should be fairly stable.
thanks,