NHDserialLCD demo Program
This program demonstrates the prototype NHDserialLCD module.
The NHD-0420D3Z-NSW-BBW-V3 is a LCD display of 4 lines x 20 characters per line and uses either RS232 serial, SPI or I2C as an interface. The default is RS232 which uses 5 volt logic levels. See 4X20 Character LCD | STN- Blue Serial Display with White Backlight. A while back I created a driver for this display to run on the PANDA.
When I bought a Cerberus I wanted to use the displays I have, so I also purchased several extender modules.
The extender module made it possible to create a prototype module for the RS232. So I created a device driver for this prototype.
For this demo, the Cerberus is connected to a Joystick, LED7R and my prototype module. The LCD display shows the Joystick position with a range of -1.0 - 1.0 along the x and y axis. The LED7R tracks the position of the joystick on the 6 outer LEDs and will track the joystick press by walking clockwise on press and counter-clockwise on release.