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Topic: need help!!!  arduino SPI programming the MCP6S21 (Read 398 times) previous topic - next topic


Can somebody please help me understand how to program using the SPI library on MCP6S21. I'm using the Arduino Duemilanove(Atmega328) with the software ver 0019.
The MCP6S21 is 8-PDIP from microchip programmable gain amplifier (PGA) using SPI: SCK, SI, CS (only 3 pins - input only).
I've tried over and over again to simply write a program that changes the amplifier gain to X2 but with no success at all. The MCP6S21 basically programmed through the SPI interface using 16-bit words.
From what I see in the datasheet it supposed to be very simple but I've tried many variations of programs like the arduino examples: DigitalPotControl, BarometricPressureSensor or even something more close: /playground/Code/MCP3208
so far nothing worked.

I'm new to SPI and if someone can shade a light for me I'll be very grateful...


if someone can shade a light for me I'll be very grateful...

You are more likely to find help if you don't cross post. That really pissed people off on this forum.

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