Introduction
CAN (Controller Area Network) is a serial communication protocol developed by Robert Bosch GmbH in the early 1980s. This protocol was initially developed for automotive applications to communicate between subsystems without a central control. CAN is also being adopted in areas such as embedded systems (CANOpen) and factory automation (DeviceNet). CAN was standardized by ISO in 2003 (ISO 11898-1:2003).
This application note introduces the basic concepts of CAN protocol and demonstrates how CAN bus communication can be implemented using PSoC® 3 and PSoC 5LP (hereafter referred to as PSoC). Four code examples are included with this application note. Examples 1 and 2 together illustrate a simplex communication between two PSoCs. Examples 3 and 4 together demonstrate the Remote Transmission Request (RTR) feature of CAN.
The video talks about how to transmit and receive messages using CAN controller available in PSoC3.
The following table indicates the PSoC devices, PSoC Creator versions, compilers, and development kits that will work with this application note project:
|
Project |
Device
|
PSoC Creator
Version |
Development Kit
CY8CKIT-xxx |
Compiler
|
|||||||
|
Architecture
|
Silicon
Revision |
V2.1 SP1 or higher |
V2.1/2.0
|
001
DVK |
Keil
|
GCC
|
RVDS
|
MDK
|
|||
|
AN52701.zip |
Prod
|
YES
|
NO
|
YES
|
YES*
|
NO
|
YES
|
N/A
|
N/A
|
N/A
|
|
|
Prod
|
YES
|
NO
|
YES
|
YES*
|
NO
|
N/A
|
YES
|
YES
|
YES
|
||
| AN52701_Archive.zip |
ES3, Prod
|
NO
|
YES
|
YES
|
YES*
|
NO
|
YES
|
N/A
|
N/A
|
N/A
|
|
*Refer to Migrating CY8CKIT-001 DVK project to CY8CKIT 030/ 050.
- Click on AN84741 - PSoC® 5 to PSoC 5LP Migration Guide to learn differences between PSoC 5 and PSoC 5LP.
- Click on AN77835 - PSoC® 3 to PSoC 5LP Migration Guide to learn differences between PSoC 3 and PSoC 5LP.
- For PSoC 5 project and related document, please download file AN52701_Archive.zip.
Projects associated with this application note can be downloaded from the ‘Related Files’ section below. For your convenience, we have provided projects that are compatible with the two most recent versions of PSoC Creator:
- AN52701.zip is used with PSoC Creator 2.1 SP1
- AN52701_Archive.zip is used with PSoC Creator 2.1/2.0
The project’s default settings may not be compatible with your device or kit, and you may need to change your project settings. For more information, see:
