Table of Contents
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Seven segment displays
Adafruit 0.56 inch 4 digit
Source: 0.56 inch seven segment backpack
Commands
variables
brightness: The value of the overall brightness of the display
location: Location #0 left most, location #2 colon dots, location #4 right most digit
number: The single digit number to be displayed
variable: The value to be displayed
Important
All commands must start with matrix. That is matrix including the dot!
Example: matrix.print(100)
When all is set always call writeDisplay() to write the commands to the display via I2C
Overview
| Command | Description |
|---|---|
| print(variable,HEX) | Print a hexidecimal number. From 0000 up to FFFF |
| print(variable,DEC) | Print a decimal integer. From 0000 up to 9999 |
| print(variable) | Print a decimal integer. From 0000 up to 9999 |
| writeDigitNum(location, number) | Print number (0-9) to location (one digit) |
| writeDigitNum(location, number, true) | Print number (0-9) to location (one digit) and turn on the decimal point at location |
| drawColon(true or false) | Turn the colon on or off |
| writeDigitRaw(location,bitmask) | Draw a raw 8-bit mask (as stored in a uint8_t) to location |
| blinkRate(rate) | Blink rate for the entire display 0 is no blinking. 1, 2 or 3 is for blinking speed |
| setBrightness(brightness) | Change the brightness of the entire display 0 is least bright, 15 (initial value) is brightest |
| writeDisplay() | Write the data to the display via I2C Must always be called after one ore more of the commands above |
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