TM1638 driver for MSP430

This driver uses USCIA0 or USCIB0, and some pins (see tm.c and tm.h). main.c contains some demo code.

Hardware

This is built for this chinese module, which uses the TM1638 chip, has 8 7-segment digits, 8 bi-color leds, and 8 buttons.

Since this module uses a single pin for input and output data, 3 extra components are needed: 2 diodes (1N4148 or similar works fine), and 1 resistor (10K works for me). Wire like this:

                              ^ (VCC)
                              |
+-------------------+         R (10K)   +--------------+
| MSP430            |         |         |    TM1638    |
|     P1.2/UCA0SIMO |----|<---+---------| DIO          |
|     P1.1/UCA0SOMI |---->|---+         |              |
|      P1.4/UCA0CLK |-------------------| CLK          |
|              P1.0 |-------------------| STB0         |
+-------------------+                   +--------------+

Acknowledgements

Thanks Kaipi for the base of the Rakefile.

Thanks to several authors of libraries for different MCUs for the protocol in operation.