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PicoSystem: add buzzer support

This commit is contained in:
Phil Howard 2021-10-04 18:19:26 +01:00
parent 113cc7c96e
commit 44b45e8f00
1 changed files with 16 additions and 0 deletions
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16
micropython/modules_py/picosystem.py
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@ -13,6 +13,8 @@ PICOSYSTEM_LCD_VSYNC = const(8)
PICOSYSTEM_LCD_DC = const(9)
PICOSYSTEM_LCD_BL = const(12)
PICOSYSTEM_AUDIO = const(11)
PICOSYSTEM_A = const(18)
PICOSYSTEM_B = const(19)
PICOSYSTEM_X = const(17)
@ -49,6 +51,20 @@ DPAD_RIGHT = const(7)
BUTTON_PINS = (PICOSYSTEM_A, PICOSYSTEM_B, PICOSYSTEM_X, PICOSYSTEM_Y, PICOSYSTEM_UP, PICOSYSTEM_DOWN, PICOSYSTEM_LEFT, PICOSYSTEM_RIGHT)
buttons = [machine.Pin(p, machine.Pin.IN, machine.Pin.PULL_UP) for p in BUTTON_PINS]
# PicoSystem Audio
audio_pin = machine.Pin(PICOSYSTEM_AUDIO)
buzzer = machine.PWM(audio_pin)
buzzer.duty_u16(0)
def buzz(freq, duty=0.5):
if freq < 50.0: # uh... https://github.com/micropython/micropython/blob/af64c2ddbd758ab6bac0fcca94c66d89046663be/ports/rp2/machine_pwm.c#L105-L119
buzzer.duty_u16(0)
else:
buzzer.freq(freq)
buzzer.duty_u16(int(65535 * duty))
# PicoSystem LED
led = pimoroni.RGBLED(PICOSYSTEM_LED_R, PICOSYSTEM_LED_G, PICOSYSTEM_LED_B, invert=False)
led.set_rgb(0, 0, 0)