Overview
========
CMSIS-Driver defines generic peripheral driver interfaces for middleware making it reusable across a wide
range of supported microcontroller devices. The API connects microcontroller peripherals with middleware
that implements for example communication stacks, file systems, or graphic user interfaces.
More information and usage method please refer to http://www.keil.com/pack/doc/cmsis/Driver/html/index.html.
The i2c_interrupt_b2b_transfer_master example shows how to use CMSIS i2c driver as master to do board to board transfer
with interrupt:
In this example, one i2c instance as master and another i2c instance on the other board as slave. Master sends a
piece of data to slave, and receive a piece of data from slave. This example checks if the data received from
slave is correct.
Toolchain supported
===================
- IAR embedded Workbench 9.20.2
- Keil MDK 5.36
- GCC ARM Embedded 10.3.1
- MCUXpresso 11.5.0
Hardware requirements
=====================
- Micro USB cable
- Two LPCXpresso55s69 boards
- Personal Computer
Board settings
==============
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
MASTER_BOARD CONNECTS TO SLAVE_BOARD
Pin Name Board Location Pin Name Board Location
I2C_SCL P17-1 I2C_SCL P17-1
I2C_SDA P17-3 I2C_SDA P17-3
GND P17-7 GND P17-7
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Prepare the Demo
================
Note: MCUXpresso IDE project default debug console is semihost
1. Connect a micro USB cable between the PC host and the LPC-Link USB port (P6) on the board.
2. Open a serial terminal on PC for JLink serial device with these settings:
- 115200 baud rate
- 8 data bits
- No parity
- One stop bit
- No flow control
3. Download the program to the target board.
4. Either press the reset button on your board or launch the debugger in your IDE to begin running
the demo.
Running the demo
================
The following message shows in the terminal if the example runs successfully.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CMSIS I2C board2board interrupt example -- Master transfer.
Master will send data :
0x 0 0x 1 0x 2 0x 3 0x 4 0x 5 0x 6 0x 7
0x 8 0x 9 0x a 0x b 0x c 0x d 0x e 0x f
0x10 0x11 0x12 0x13 0x14 0x15 0x16 0x17
0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x1e 0x1f
Receive sent data from slave :
0x 0 0x 1 0x 2 0x 3 0x 4 0x 5 0x 6 0x 7
0x 8 0x 9 0x a 0x b 0x c 0x d 0x e 0x f
0x10 0x11 0x12 0x13 0x14 0x15 0x16 0x17
0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x1e 0x1f
End of I2C example .
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
imi415
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