sci2can.txt

freescale k40/k60 cortex m4 library

This project is a simple sci2can example which can run standalone without external CAN loopback node. 
The local node running sci2can is named Node A.

By default the OS-JTAG is used for the terminal output. The terminal should be configured for 115200 8-N-1.

The default CAN bit rate is 83.33K.

Supported platforms:
- TWR_K40X256
- TWR_K60N512

The sci2can.eww file will open the project for all of the supported platforms. Pick the specific project that corresponds 
to your hardware.

NOTE: if switching between platforms it is a good idea to do a make clean to make sure the code is properly configured 
for the new platform.

After running the code, the following messages will be printed on the terminal:
    Hello Kinetis,Welcome to FlexCAN demo labs!
    Please select one demo below:
    1. SCI2CAN bridge
    2. Rx FIFO demo
    Select:

You can enter 1 for SCI2CAN bridge demo, 2 for Rx FIFO demo.
If SCI2CAN bridge demo is selected, you can enter any character on the terminal which will be sent to the CAN and then echoed to 
the terminal. type "Ctrl-q" to quit the SCI2CAN bridge demo.

If Rx FIFO demo is selected, it will send 9 messages out of the CAN to the loopback node which echoes them back and 
then the received messages will be printed  on the local terminal.

Instructions on how to play with the external CAN loopback node (Node B):
If you want to play with the external CAN loopback node and see CAN bus activity, please follow steps below:
1) change both FLEXCAN_SELF_RECEPTION and FLEXCAN_LOOP_BACK macro values to 0 in can_config.h as below: 
#define FLEXCAN_SELF_RECEPTION    0
#define FLEXCAN_LOOP_BACK         0

2) Select "FLASH_256KB_PFLASH_256KB_DFLASH" as the active configuration for the project;
3) Rebuild the whole project;
4) Select "Project->download and debug";
5) Select "Debug->Go" to run the code;
6) Switch off the power to the tower system Node A and disconnect the JTAG connection from the emulator and PC to the Node A;
7) Connect one end of the CAN cable to J7 on TWR-SER module of the Node A tower system , 
the other end to the J7 on another set of TWR-SER module of K40 or K60 tower system (Node B);
8) Connect JTAG connector from the emulator to the tower system Node B and PC;
9) switch on the power to the tower system Node B;
10) open can_loopback_node workspace by double-clicking on can_loopback_node.eww
11) Select "FLASH_256KB_PFLASH_256KB_DFLASH" as the active configuration for the project;
12) Rebuild the whole project and then select "Project->download & debug";
13) Select "Debug->Go" to run the code on the tower system Node B;
14) switch on the power to the tower system Node A to run sci2can demo;
15) follow aforementioned instructions to play with sci2can demo;