TM1637 Driver

Simple portable driver for a TM1637 IC powering 4 digit seven segment display with a colon in the middle and no decimal points (3462BS-7.3).

Interface

• TM1637_init: initializes the DIO and CLK pins
• TM1637_write: used to write digits to the display by passing a byte array that corresponds to each segment and the position of the first digit to be written to
• TM1637_clear: clears all segments
• TM1637_set_brightness: set the brightness level
• TM1637_set_display_on: configure whether the screen is on or off

Configuration

Prior to calling TM1637_init a configuration structure TM1637_config must be created and intialized with function pointers for a delay function, GPIO setting for CLK and DIO and a function to change the DIO pin's GPIO mode and DIO read input function. This configuration structure also contains members to control brightness, the display, and the delay time (max 2 micro seconds).