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AN1105/0801 1/100
Version 1.3
AN1105
APPLICATION NOTE
ST7 pCAN PERIPHERAL DRIVER
by Central European MCU Support
INTRODUCTION
The Controller Area Network (CAN) norm defines a fast and robust serial bus protocol, suited
for local networking of intelligent devices such as microcontrollers, sensors and actuators. It is
now widely used, mostly in the automotive domain, but also for home automation and indus-
trial equipment control.
Several members of the ST7 MCU family have a built-in CAN peripheral named pCAN, which
allows them to be used as nodes in a CAN network. A software driver provided is by ST to help
you start designing and writing applications using the ST7 pCAN cell.
The purpose of the following application note is to explain to you how to use the driver, and
how it works. Thus, you can either build your software from the provided files, or modify them
to meet specific needs.
You will find in this application note:
– a brief description of the CAN protocol
– an overview of the pCAN peripheral
– the complete description of the user interface
– the step-by-step development of an example application using the driver features
– a technical report including a description of algorithms and internal data types
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