SPI.zip.zip_zip

Tor-Inge Johannessen Eriksen – TTK4155 Industrial and Embedded Computer Systems Design – Lab lecture 5

TTK4155

Industrial and Embedded Computer Systems Design

Lab lecture 5

• CAN bus

• CAN controller and transceiver

• SPI bus

2

Exercise 5: SPI and CAN controller

between nodes

• In this exercise, you will

– Create a CAN communication driver

– Test drivers with CAN controller in loop-back mode

– Connect CAN transceiver to controller on node 1

– Program and test communication with node 2 and I/O card

3

Communication bus

4

• Controller Area Network

• Vehicle bus = Noise resilient, delivery assurance etc.

5

• Two states

• Logical 1: Recessive state – CANH = CANL = Vcc/2

• Logical 0: Dominant state – CANH ≈ Vcc and CANL ≈ Gnd