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servo: add driver using PWM

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This PR adds support for controlling servos. For example, on the Arduino
Uno it should be able to control up to 6 servos jitter-free when using
all available PWM pins.

I haven't added support for setting a position in degrees, mainly
because this varies by servo and it's probably necessary to configure
the bounds in some way. Therefore, I added just SetMicroseconds. This
makes the API possible to use and leaves the possibility of adding a
SetPosition in the future.
This commit is contained in:
Ayke van Laethem
2020-12-21 17:13:35 +01:00
committed by Ron Evans
parent 428db3cd12
commit c765ef3970
4 changed files with 129 additions and 1 deletions
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Makefile
+3 -1
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@@ -103,6 +103,8 @@ smoke-test:
@md5sum ./build/test.hex
tinygo build -size short -o ./build/test.hex -target=microbit ./examples/pcd8544/setpixel/main.go
@md5sum ./build/test.hex
tinygo build -size short -o ./build/test.hex -target=arduino ./examples/servo
@md5sum ./build/test.hex
tinygo build -size short -o ./build/test.hex -target=pybadge ./examples/shifter/main.go
@md5sum ./build/test.hex
tinygo build -size short -o ./build/test.hex -target=microbit ./examples/sht3x/main.go
@@ -196,7 +198,7 @@ DRIVERS = $(wildcard */)
NOTESTS = build examples flash semihosting pcd8544 shiftregister st7789 microphone mcp3008 gps microbitmatrix \
hcsr04 ssd1331 ws2812 thermistor apa102 easystepper ssd1351 ili9341 wifinina shifter hub75 \
hd44780 buzzer ssd1306 espat l9110x st7735 bmi160 l293x dht keypad4x4 max72xx p1am tone tm1637 \
pcf8563 mcp2515
pcf8563 mcp2515 servo
TESTS = $(filter-out $(addsuffix /%,$(NOTESTS)),$(DRIVERS))
unit-test: