lin_slave#
Overview#
The LIN (Local Interconnect Network) demo application is a use-case of LIN low level driver without LIN stack. This application pair (master and slave) demonstrates a signal transfer between the two nodes. Master node and slave node signals are represented by the character array. Both master and slave node must have implemented the timer that is used by timeout service routine every 500 us and master node use the same timer to check for switch of the frame table scheduler every 5 ms. The application and driver use the state machines to handle various of states of the bus on different levels. This demo uses auto-baudrate feature. User can use the buttons to sleep and wakeup the master node which is indicated by LED state. This application supports only unconditional frame types.
Running the demo#
Slave is waiting for master to initialize the communication then exchange a response as signal represented by the character array. If slave receive a frame header from master it will update its frame buffer or continue to send its own frame then stay awaiting a new frame header. Master exchanges the signals four times. The next two frames are of diagnostic type and could be used for customer purposes (for example LIN cluster go to sleep command). This sequence is than repeated.
If communication is succesfull the master and slave node will both repeatedly print:
LIN DEMO SLAVE LIN DEMO MASTER
Supported Boards#
KW45B41Z-EVK
Overview
The LIN (Local Interconnect Network) demo application is built on Low Power UART.
Hardware requirements
Two micro USB cables
Two KW45B41Z-EVK boards
Personal Computer
Power adapter 12 V
Three Dupont female-to-female wires
Board settings
Connect J11-1 of the two boards
Connect J11-2 of the two boards
Connect J11-4 of the two boards
Short the JP19-1 and JP19-2 with the jumper
Short the J1-1 and J2-2 with the jumper due to the autobaudrate feature is enabled by default
Prepare the Demo
Connect a mini/micro USB cable between the PC host and the OpenSDA USB port on the boards.
Open a serial terminal on PC for OpenSDA serial device with these settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program for slave node to the target board.
KW47-EVK
Overview
The LIN (Local Interconnect Network) demo application is built on Low Power UART.
Hardware requirements
Two micro USB cables
Two KW47-EVK boards
Personal Computer
Power adapter 12 V
Three Dupont female-to-female wires
Board settings
Connect J11-1 of the two boards
Connect J11-2 of the two boards
Connect J11-4 of the two boards
Short the JP19-1 and JP19-2 with the jumper
Short the J1-1 and J2-17 with the jumper due to the autobaudrate feature is enabled by default
Prepare the Demo
Connect a mini/micro USB cable between the PC host and the OpenSDA USB port on the boards.
Open a serial terminal on PC for OpenSDA serial device with these settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program for slave node to the target board.
FRDM-KW43
Overview
The LIN (Local Interconnect Network) demo application is built on Low Power UART.
Hardware requirements
Type-C USB cable
FRDM-KW43 Board
Personal Computer
Power adapter 12V
Three Dupont female-to-female wires
Board settings
Connect J18-1 of the two boards
Connect J18-2 of the two boards
Connect J18-4 of the two boards
Short the JP18-1(LPUART0_RX) and J19-3(PTB0_H) with the jumper due to the autobaudrate feature is enabled by default
U30 and U12C affects the PTB0_H signal, causing it to remain at a low level. Note: Short JP6 to disable U30 before running this example.
Prepare the Demo
Connect a mini/micro USB cable between the PC host and the OpenSDA USB port on the boards.
Open a serial terminal on PC for OpenSDA serial device with these settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program for slave node to the target board.
FRDM-MCXW70
Overview
The LIN (Local Interconnect Network) demo application is built on Low Power UART.
Hardware requirements
Type-C USB cable
FRDM-MCXW70 Board
Personal Computer
Power adapter 12V
Three Dupont female-to-female wires
Board settings
Connect J18-1 of the two boards
Connect J18-2 of the two boards
Connect J18-4 of the two boards
Short the JP18-1(LPUART0_RX) and J19-3(PTB0_H) with the jumper due to the autobaudrate feature is enabled by default
U30 and U12C affects the PTB0_H signal, causing it to remain at a low level. Note: Short JP6 to disable U30 before running this example.
Prepare the Demo
Connect a mini/micro USB cable between the PC host and the OpenSDA USB port on the boards.
Open a serial terminal on PC for OpenSDA serial device with these settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program for slave node to the target board.