CLP CAN

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Introduction

This guide will demonstrate how to configure the hardware of the EK-TM4C1294XL for Controller Area Network (CAN) BoosterPacks.

The CAN signals are available only on BoosterPack connection 2. They are available only when JP4 and JP5 are configured as shown below. The placement of CAN signals on BoosterPack 2 headers is consistent with the TM4C123G Tiva LaunchPad and the Stellaris LaunchPad.

Jumper configuration

This image shows the default configuration of JP4 and JP5.

In the default configuration CAN is not available on the BoosterPack headers. UART0 is used for the virtual serial port connection to the in circuit debug interface. JP4 and JP5 are installed horizontally.

This image shows the configuration of JP4 and JP5 needed for CAN on the BoosterPack.

To make CAN available on the BoosterPack rotate and re-install the JP4 and JP5 jumper pairs to the vertical orientation. In this orientation CAN TXD and RXD signals are available on the BoosterPack 2 headers. In this orientation UART4 is used for the virtual serial port. The CAN TXD and RXD signals are available on the same BoosterPack pins as on the TM4C123G LaunchPad and the Stellaris LaunchPad. Properly designed CAN BoosterPacks will operate on all three LaunchPads that offer CAN. A CAN signal transceiver is required on the BoosterPack.

Software Support

As of TivaWare 2.1 there is no official CAN software support on LaunchPads.

However, the DK-TM4C123G software package contains CAN example programs that can be easily ported to all three LaunchPads that support CAN.