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dsc_i2c_interrupt

dsc_i2c_interrupt#

Overview#

The i2c_functional_interrupt example shows how to use I2C functional driver to build a interrupt based application:

In this example , one i2c instance used as I2C master and another i2c instance used as I2C slave .

  1. I2C master send data to I2C slave in interrupt . (I2C Slave using interrupt to receive the data)

  2. I2C master read data from I2C slave in interrupt . (I2C Slave using interrupt to send the data)

  3. The example assumes that the connection is OK between master and slave, so there’s NO error handling code.

Supported Boards#

MC56F83000-EVK
Hardware requirements

  • Micro USB cable

  • MC56F83000-EVK board

  • Personal Computer

Board hardware common setting

  1. Power setting:

    Connect J19 pin2 and pin3 Connect J12 pin1 and pin2 Connect J13 pin1 and pin2 Connect J15 pin1 and pin2 Connect J16 pin2 and pin3 Connect J17 pin1 and pin2

  2. Onboard OSJTAG debugger setting:

    Leave J5 open Leave J6 open Note: J6 is only used(connected) when firmware update for onboard debugger OSJTAG. Connect J11 pin 1-2, 3-4, 5-6, 7-8, to setup onboard debugger OSJTAG. Note: when use external debugger(connected to J10), leave all J11 pins open.

Board settings

The example is configured 2 instances I2C , one as I2C master , another as I2C slave. The connection should be set as following:

  • J2-20 and R58 connected

  • J2-18 and R49 connected

Prepare the Demo

  1. Connect USB cable between the host PC and the JM60 USB(J8) port on the target board. It setups OSJTAG and COM port in PC device manager.

  2. Open a serial terminal with the following settings:

    • 115200 baud rate

    • 8 data bits

    • No parity

    • One stop bit

    • No flow control

  3. Download the program to the target board with OSJTAG debug configuration.

  4. Either press the reset button on your board or launch the debugger in your IDE to begin running the demo. Please be noted that default FCF(flash configuration field) setting makes MCU boot from bootloader. So after reset button press, it will wait 5s(wait in bootloader) to run the application code.

Running the demo

When the example runs successfully, you can see the similar information from the terminal as below.

I2C example -- MasterFuntionalInterrupt_SlaveInterrupt.
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

Slave received 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

This time , slave will send data: :
0xff  0xfe  0xfd  0xfc  0xfb  0xfa  0xf9  0xf8
0xf7  0xf6  0xf5  0xf4  0xf3  0xf2  0xf1  0xf0
0xef  0xee  0xed  0xec  0xeb  0xea  0xe9  0xe8
0xe7  0xe6  0xe5  0xe4  0xe3  0xe2  0xe1  0xe0

Master received data :
0xff  0xfe  0xfd  0xfc  0xfb  0xfa  0xf9  0xf8
0xf7  0xf6  0xf5  0xf4  0xf3  0xf2  0xf1  0xf0
0xef  0xee  0xed  0xec  0xeb  0xea  0xe9  0xe8
0xe7  0xe6  0xe5  0xe4  0xe3  0xe2  0xe1  0xe0


End of I2C example .
TWR-MC56F8400
Hardware requirements

  • Mini USB cable

  • TWR-MC56F8400 board

  • Personal Computer

Board hardware common setting

  1. Power setting:

    Connect J11 pin1 and pin2 Connect J6 pin1 and J7 pin2

  2. UART setting:

    Connect J8 pin3 and pin4 Connect J9 pin3 and pin4

  3. Onboard OSJTAG debugger setting:

    Connect J20 pin1 and pin2. Leave J17 open. Note: J17 is only used(connected) when firmware update for onboard debugger OSJTAG. Connect J21 pin 1-2, 3-4, 5-6, 7-8, to setup onboard debugger OSJTAG. Note: when use external debugger(connected to J14), leave all J21 pins open

Board settings

  • Pull-up SCL/SDA each to 3.3V with resistor(2.2K~5.1K ohm)

    The inter-connection:

          MASTER      ONNECTS TO        SLAVE
Pin Name   Board Location     Pin Name  Board Location
I2C0_SCL   J501-21            I2C1_SCL  J502-5
I2C0_SDA   J501-23            I2C1_SDA  J501-7
Prepare the Demo

  1. Connect USB cable between the host PC and the JM60 USB(J18) port on the target board. It setups OSJTAG and COM port in PC device manager.

  2. Open a serial terminal with the following settings:

    • 115200 baud rate

    • 8 data bits

    • No parity

    • One stop bit

    • No flow control

  3. Download the program to the target board with OSJTAG debug configuration.

  4. Launch the debugger in your IDE to begin running the demo.

Running the demo

When the example runs successfully, you can see the similar information from the terminal as below.

I2C example -- MasterFuntionalInterrupt_SlaveInterrupt.
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

Slave received 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

This time , slave will send data: :
0xff  0xfe  0xfd  0xfc  0xfb  0xfa  0xf9  0xf8
0xf7  0xf6  0xf5  0xf4  0xf3  0xf2  0xf1  0xf0
0xef  0xee  0xed  0xec  0xeb  0xea  0xe9  0xe8
0xe7  0xe6  0xe5  0xe4  0xe3  0xe2  0xe1  0xe0

Master received data :
0xff  0xfe  0xfd  0xfc  0xfb  0xfa  0xf9  0xf8
0xf7  0xf6  0xf5  0xf4  0xf3  0xf2  0xf1  0xf0
0xef  0xee  0xed  0xec  0xeb  0xea  0xe9  0xe8
0xe7  0xe6  0xe5  0xe4  0xe3  0xe2  0xe1  0xe0


End of I2C example .
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