Kinetis MCU - Trizeps VIII -Hardware

http://gitlab.keith-koep.com/tr8firmware/tr8_mcu

The on-board Cortex M0+ Kinetis MCU on Trizeps 8 type modules is used for following functions: resistive touch, adc inputs, canbus, sdcard io-voltage selector, gpios and reset control with bootmode selection. It may be also used for realtime processing and power-management.
It is capable of reading multiple 16bit analog inputs (i.e. to emulate a resistive touch controller) and has a CAN-controller.

Programming

The MCU may be programmed through JTAG using connector J401 (see datasheet for details) or in system through I2C. In-System-Programming through I2C has not been verified yet.

Firmware

When the Trizeps VIII is equipped with a Kinetis MCU it will be used to control power-up and reset of the i.MX8M processor.

Customers may request access to the source-code of the firmware to modify it for their needs.

Default-Firmware

The following describes the current default-firmware.
After power-up the Kinetis MCU will:

• Initialize itself

• Configure the PMIC

• Apply 32.786kHZ to processor and deassert RESET_OUT.

• Enter control loop

In the control loop two functions are realized:

• Control of Kinetis MCU functions through I2C (see below).