Chameleon-AVR Nurve Networks, Chameleon-AVR Datasheet - Page 160

• Manufacturer Part Number: Chameleon-AVR
• Description: MCU, MPU & DSP Development Tools AVR8 & PROPELLER DEV SYSTEM (SBC)
• Manufacturer: Nurve Networks

Specifications of Chameleon-AVR

• Processor To Be Evaluated: AVR 328P
• Data Bus Width: 8 bit
• Interface Type: USB, VGA, PS/2, I2C, ISP, SPI
• Operating Supply Voltage: 3.3 V, 5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

© 2009 NURVE NETWORKS LLC “Exploring the Chameleon AVR 8-Bit”
And that’s about it for #defines, let’s move on to the API roadmap.
19.4 API Listing Reference
2
The API listing for the “SPI and I
C” module CHAM_TWI_SPI_V010.c supports a thin “wrapper” layer over the hardware
functionality. The SPI API is more developed since the I2C tends to have a lot “state” in it, functions have to return with
errors and other information, hence, you will probably want to write your own functions in the future. Nonetheless, I have
2
used the thin wrapper to show how to control an I
C peripheral (a digital potentiometer) which we will cover in the
Mechatronics section for reference. So the functions work, but you have to call them at a fairly low level. Table 19.3
2
below lists the “SPI and I
C” API functions categorized by functionality.
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