Overview

Target mode by using interrupts for transmitting and receiving data.

• The target address is 0x7E.
• The controller can write a single byte to the target. The byte controls the target RGB LED as follows: XXXXXBGR
  • bit 0 controls the red LED: 1 is on, 0 is off
  • bit 1 controls the green LED: 1 is on, 0 is off
  • bit 2 controls the blue LED: 1 is on, 0 is off
  • X means don't care
• The controller can read from the target. The target always returns the following bytes after a write command:
  • 0x01
  • 0x02
  • 0x03

Hardware requirements

• 2 FRDM-MCXA153 boards
• 2 Type-C USB cables
• Jumper wires
• 4k7 Ohm pullup resistors, available on the Shield V3

Board settings

• Connect two boards/shields as follows:

Controller	Target
SDA	SDA
SCL	SCL
GND	GND

Preparation

• Connect the type-C USB cable between the host PC and the MCU-Link port (J15) on the target boards.
• Build the applications:
  • b2b_controller_interrupt
  • b2b_target_interrupt
• Run or debug the applications.

Result

• The controller is able to control the RGB state of the target.