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Update charlcd_rpi_rgb_simpletest.py example with new support for PWM control of RGB backlight #51

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Merged
merged 4 commits into from
Nov 13, 2020
Merged

Update charlcd_rpi_rgb_simpletest.py example with new support for PWM control of RGB backlight #51

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09a1737
lcd_backlight is not used for the RGB LCD
taotien Aug 30, 2020
fe3a1fc
Copied example from other RBG simpletest, uses pulseio
taotien Aug 30, 2020
e51a3db
Put everything in while loop, ran black
Nov 13, 2020
961d9c6
Ran black on character_lcd.py
Nov 13, 2020
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50 changes: 25 additions & 25 deletions adafruit_character_lcd/character_lcd.py
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Original file line number Diff line number Diff line change
Expand Up @@ -547,18 +547,18 @@ def _pulse_enable(self):
class Character_LCD_Mono(Character_LCD):
"""Interfaces with monochromatic character LCDs.

:param ~digitalio.DigitalInOut rs: The reset data line
:param ~digitalio.DigitalInOut en: The enable data line
:param ~digitalio.DigitalInOut d4: The data line 4
:param ~digitalio.DigitalInOut d5: The data line 5
:param ~digitalio.DigitalInOut d6: The data line 6
:param ~digitalio.DigitalInOut d7: The data line 7
:param columns: The columns on the charLCD
:param lines: The lines on the charLCD
:param ~digitalio.DigitalInOut backlight_pin: The backlight pin
:param bool backlight_inverted: ``False`` if LCD is not inverted, i.e. backlight pin is
connected to common anode. ``True`` if LCD is inverted i.e. backlight pin is connected
to common cathode.
:param ~digitalio.DigitalInOut rs: The reset data line
:param ~digitalio.DigitalInOut en: The enable data line
:param ~digitalio.DigitalInOut d4: The data line 4
:param ~digitalio.DigitalInOut d5: The data line 5
:param ~digitalio.DigitalInOut d6: The data line 6
:param ~digitalio.DigitalInOut d7: The data line 7
:param columns: The columns on the charLCD
:param lines: The lines on the charLCD
:param ~digitalio.DigitalInOut backlight_pin: The backlight pin
:param bool backlight_inverted: ``False`` if LCD is not inverted, i.e. backlight pin is
connected to common anode. ``True`` if LCD is inverted i.e. backlight pin is connected
to common cathode.

"""

Expand Down Expand Up @@ -629,19 +629,19 @@ def backlight(self, enable):
class Character_LCD_RGB(Character_LCD):
"""Interfaces with RGB character LCDs.

:param ~digitalio.DigitalInOut rs: The reset data line
:param ~digitalio.DigitalInOut en: The enable data line
:param ~digitalio.DigitalInOut db4: The data line 4
:param ~digitalio.DigitalInOut db5: The data line 5
:param ~digitalio.DigitalInOut db6: The data line 6
:param ~digitalio.DigitalInOut db7: The data line 7
:param columns: The columns on the charLCD
:param lines: The lines on the charLCD
:param ~pulseio.PWMOut, ~digitalio.DigitalInOut red: Red RGB Anode
:param ~pulseio.PWMOut, ~digitalio.DigitalInOut green: Green RGB Anode
:param ~pulseio.PWMOut, ~digitalio.DigitalInOut blue: Blue RGB Anode
:param ~digitalio.DigitalInOut read_write: The rw pin. Determines whether to read to or
write from the display. Not necessary if only writing to the display. Used on shield.
:param ~digitalio.DigitalInOut rs: The reset data line
:param ~digitalio.DigitalInOut en: The enable data line
:param ~digitalio.DigitalInOut db4: The data line 4
:param ~digitalio.DigitalInOut db5: The data line 5
:param ~digitalio.DigitalInOut db6: The data line 6
:param ~digitalio.DigitalInOut db7: The data line 7
:param columns: The columns on the charLCD
:param lines: The lines on the charLCD
:param ~pulseio.PWMOut, ~digitalio.DigitalInOut red: Red RGB Anode
:param ~pulseio.PWMOut, ~digitalio.DigitalInOut green: Green RGB Anode
:param ~pulseio.PWMOut, ~digitalio.DigitalInOut blue: Blue RGB Anode
:param ~digitalio.DigitalInOut read_write: The rw pin. Determines whether to read to or
write from the display. Not necessary if only writing to the display. Used on shield.

"""

Expand Down
75 changes: 60 additions & 15 deletions examples/charlcd_rpi_rgb_simpletest.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
import time
import board
import digitalio
import pulseio
import adafruit_character_lcd.character_lcd as characterlcd

# Modify this if you have a different sized character LCD
Expand All @@ -15,11 +16,10 @@
lcd_d6 = digitalio.DigitalInOut(board.D22) # pin 13
lcd_d5 = digitalio.DigitalInOut(board.D24) # pin 12
lcd_d4 = digitalio.DigitalInOut(board.D25) # pin 11
lcd_backlight = digitalio.DigitalInOut(board.D4)

red = digitalio.DigitalInOut(board.D21)
green = digitalio.DigitalInOut(board.D12)
blue = digitalio.DigitalInOut(board.D18)
red = pulseio.PWMOut(board.D21)
green = pulseio.PWMOut(board.D12)
blue = pulseio.PWMOut(board.D18)

# Initialise the LCD class
lcd = characterlcd.Character_LCD_RGB(
Expand All @@ -34,25 +34,70 @@
red,
green,
blue,
lcd_backlight,
)

RED = [1, 0, 0]
GREEN = [0, 1, 0]
BLUE = [0, 0, 1]
RED = [100, 0, 0]
GREEN = [0, 100, 0]
BLUE = [0, 0, 100]

while True:
lcd.clear()
lcd.message = "CircuitPython\nRGB Test: RED"
lcd.color = RED
# Set LCD color to red
lcd.color = [100, 0, 0]
time.sleep(1)

lcd.clear()
lcd.message = "CircuitPython\nRGB Test: GREEN"
lcd.color = GREEN
# Print two line message
lcd.message = "Hello\nCircuitPython"

# Wait 5s
time.sleep(5)

# Set LCD color to blue
lcd.color = [0, 100, 0]
time.sleep(1)
# Set LCD color to green
lcd.color = [0, 0, 100]
time.sleep(1)
# Set LCD color to purple
lcd.color = [50, 0, 50]
time.sleep(1)
lcd.clear()

# Print two line message right to left
lcd.text_direction = lcd.RIGHT_TO_LEFT
lcd.message = "Hello\nCircuitPython"
# Wait 5s
time.sleep(5)

# Return text direction to left to right
lcd.text_direction = lcd.LEFT_TO_RIGHT

# Display cursor
lcd.clear()
lcd.cursor = True
lcd.message = "Cursor! "
# Wait 5s
time.sleep(5)

# Display blinking cursor
lcd.clear()
lcd.blink = True
lcd.message = "Blinky Cursor!"
# Wait 5s
time.sleep(5)
lcd.blink = False
lcd.clear()

# Create message to scroll
scroll_msg = "<-- Scroll"
lcd.message = scroll_msg
# Scroll to the left
for i in range(len(scroll_msg)):
time.sleep(0.5)
lcd.move_left()
lcd.clear()

# Turn off LCD backlights and clear text
lcd.color = [0, 0, 0]
lcd.clear()
lcd.message = "CircuitPython\nRGB Test: BLUE"
lcd.color = BLUE
time.sleep(1)