HT1621 7 segment LCD Arduino library

Arduino library for lcds based on the HT1622 driver.

APIs reference

• void begin(int cs_p, int wr_p, int data_p, [int backlight_p])
  Starts the lcd with the pin assignement declared. The backlight pin is optional

• void begin(SPIClass &SPI, [int cs_p], [int backlight_p])
  Starts the lcd with the SPI. The backlight pin is optional

• void clear()
  Clears the display

• void backlight()
  Turns on the backlight

• void noBacklight()
  Turns off the backlight

• void write(unsigned char ch) Implements write method for Print interface.

• void noDisplay()
  Turns off the display (doesn't turn off the backlight)

• void display()
  Turns the display back on after it has been disabled by noDisplay()

Internal functioning

Can drive any segmented display up to 16 segments.

• Typical names for segments:
• /-----------\ /-----------\
• || 'a' || || 'b' ||
• -----------/ -----------/
• /-\ /--\ /-\ /--\ /-\
• | |\ \ | | / /| |
• | | \ \ | | / / | |
• |'h'| 'k'\ |'m'| /'n'/ |'c'|
• | | \ \ | | / / | |
• | | \ | |/ / | |
• -/ --/ -/ --/ -/
• /-----------\ /-----------\
• || 'u' || || 'p' ||
• -----------/ -----------/
• /-\ /--\ /-\ /--\ /-\
• | | / /| |\ \ | |
• | | / / | | \ \ | |
• |'g'| /'t'/ |'s'| 'r'\ |'d'|
• | | / / | | \ \ | |
• | |/ / | | \ | |
• -/ --/ -/ --/ -/
• /-----------\ /-----------
  *|| 'f' || || 'e' ||
• -----------/ -----------/ */