kopia lustrzana https://github.com/pimoroni/pimoroni-pico
Update LiPo examples to use PicoGraphics
helgibbons
rodzic
2cbd710620
commit
b8110f3905
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@ -1,28 +1,30 @@
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# This example shows how to read the voltage from a LiPo battery connected to a Raspberry Pi Pico via our Pico Lipo SHIM...
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# ...and uses this reading to calculate how much charge is left in the battery.
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# It then displays the info on the screen of Pico Display or Pico Explorer.
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# This example shows how to read the voltage from a LiPo battery connected to a Raspberry Pi Pico via our Pico Lipo SHIM
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# and uses this reading to calculate how much charge is left in the battery.
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# It then displays the info on the screen of Pico Display.
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# Remember to save this code as main.py on your Pico if you want it to run automatically!
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from machine import ADC, Pin
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import time
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# Uncomment one of these lines, depending on what display you have
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import picodisplay as display
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# import picodisplay2 as display
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# import picoexplorer as display
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# change to DISPLAY_PICO_DISPLAY_2 for Pico Display 2.0
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from picographics import PicoGraphics, DISPLAY_PICO_DISPLAY
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display = PicoGraphics(display=DISPLAY_PICO_DISPLAY, rotate=0)
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# Set up and initialise display
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buf = bytearray(display.get_width() * display.get_height() * 2)
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display.init(buf)
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display.set_backlight(0.8) # comment out this line if you have a Pico Explorer as it doesn't have a controllable backlight
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display.set_backlight(0.8)
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vsys = ADC(29) # reads the system input voltage
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charging = Pin(24, Pin.IN) # reading GP24 tells us whether or not USB power is connected
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vsys = ADC(29) # reads the system input voltage
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charging = Pin(24, Pin.IN) # reading GP24 tells us whether or not USB power is connected
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conversion_factor = 3 * 3.3 / 65535
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full_battery = 4.2 # these are our reference voltages for a full/empty battery, in volts
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empty_battery = 2.8 # the values could vary by battery size/manufacturer so you might need to adjust them
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# Create some pen colours for drawing with
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BLACK = display.create_pen(0, 0, 0)
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GREY = display.create_pen(190, 190, 190)
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GREEN = display.create_pen(0, 255, 0)
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RED = display.create_pen(255, 0, 0)
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while True:
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# convert the raw ADC read into a voltage, and then a percentage
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voltage = vsys.read_u16() * conversion_factor
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@ -31,30 +33,25 @@ while True:
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percentage = 100.00
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# draw the battery outline
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display.set_pen(0, 0, 0)
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display.set_pen(BLACK)
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display.clear()
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display.set_pen(190, 190, 190)
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display.set_pen(GREY)
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display.rectangle(0, 0, 220, 135)
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display.rectangle(220, 40, 20, 55)
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display.set_pen(0, 0, 0)
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display.set_pen(GREEN)
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display.rectangle(3, 3, 214, 129)
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# draw a green box for the battery level
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display.set_pen(0, 255, 0)
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display.set_pen(GREEN)
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display.rectangle(5, 5, round(210 / 100 * percentage), 125)
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# add text
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display.set_pen(255, 0, 0)
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display.set_pen(RED)
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if charging.value() == 1: # if it's plugged into USB power...
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display.text("Charging!", 15, 55, 240, 4)
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else: # if not, display the battery stats
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display.text('{:.2f}'.format(voltage) + "v", 15, 10, 240, 5)
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display.text('{:.0f}%'.format(percentage), 15, 50, 240, 5)
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# uncomment for low battery alarm (Pico Explorer only, you'll need to have GP0 and AUDIO connected with a jumper wire)
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# display.set_audio_pin(0)
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# if percentage < 5: # if the battery is less than 5%
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# display.set_tone(262) # then make an annoying noise
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display.update()
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time.sleep(0.5)
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@ -1,21 +1,17 @@
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# This example reads the voltage from a LiPo battery connected to Pimoroni Pico LiPo...
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# ...and uses this reading to calculate how much charge is left in the battery.
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# It then displays the info on the screen of Pico Display or Pico Explorer.
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# This example reads the voltage from a LiPo battery connected to Pimoroni Pico LiPo
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# and uses this reading to calculate how much charge is left in the battery.
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# It then displays the info on the screen of Pico Display (or Pico Display 2.0).
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# With Pimoroni Pico LiPo, you can read the battery percentage while it's charging.
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# Save this code as main.py on your Pico if you want it to run automatically!
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from machine import ADC, Pin
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import time
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# change to DISPLAY_PICO_DISPLAY_2 for Pico Display 2.0
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from picographics import PicoGraphics, DISPLAY_PICO_DISPLAY
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# Uncomment one of these lines, depending on what display you have
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import picodisplay as display
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# import picodisplay2 as display
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# import picoexplorer as display
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display = PicoGraphics(display=DISPLAY_PICO_DISPLAY, rotate=0)
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# Set up and initialise display
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buf = bytearray(display.get_width() * display.get_height() * 2)
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display.init(buf)
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display.set_backlight(0.8) # comment out this line if you have a Pico Explorer, it doesn't have a controllable backlight
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display.set_backlight(0.8)
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vsys = ADC(29) # reads the system input voltage
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charging = Pin(24, Pin.IN) # reading GP24 tells us whether or not USB power is connected
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@ -24,6 +20,12 @@ conversion_factor = 3 * 3.3 / 65535
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full_battery = 4.2 # reference voltages for a full/empty battery, in volts
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empty_battery = 2.8 # the values could vary by battery size/manufacturer so you might need to adjust them
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# Create some pen colours for drawing with
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BLACK = display.create_pen(0, 0, 0)
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GREY = display.create_pen(190, 190, 190)
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GREEN = display.create_pen(0, 255, 0)
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RED = display.create_pen(255, 0, 0)
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while True:
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# convert the raw ADC read into a voltage, and then a percentage
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voltage = vsys.read_u16() * conversion_factor
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@ -32,30 +34,25 @@ while True:
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percentage = 100
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# draw the battery outline
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display.set_pen(0, 0, 0)
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display.set_pen(BLACK)
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display.clear()
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display.set_pen(190, 190, 190)
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display.set_pen(GREY)
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display.rectangle(0, 0, 220, 135)
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display.rectangle(220, 40, 20, 55)
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display.set_pen(0, 0, 0)
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display.set_pen(BLACK)
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display.rectangle(3, 3, 214, 129)
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# draw a green box for the battery level
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display.set_pen(0, 255, 0)
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display.set_pen(GREEN)
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display.rectangle(5, 5, int((210 / 100) * percentage), 125)
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# add text
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display.set_pen(255, 0, 0)
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display.set_pen(RED)
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if charging.value() == 1: # if it's plugged into USB power...
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display.text("Charging!", 15, 90, 240, 4)
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display.text('{:.2f}'.format(voltage) + "v", 15, 10, 240, 5)
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display.text('{:.0f}%'.format(percentage), 15, 50, 240, 5)
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# uncomment for low battery alarm (Pico Explorer only, you'll need to have GP0 and AUDIO connected with a jumper wire)
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# display.set_audio_pin(0)
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# if percentage < 5: # if the battery is less than 5%
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# display.set_tone(262) # then make an annoying noise
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display.update()
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time.sleep(0.5)
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@ -0,0 +1,64 @@
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# This example reads the voltage from a LiPo battery connected to Pimoroni Pico LiPo
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# and uses this reading to calculate how much charge is left in the battery.
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# It then displays the info on the screen of Pico Explorer.
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# With Pimoroni Pico LiPo, you can read the battery percentage while it's charging.
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# Save this code as main.py on your Pico if you want it to run automatically!
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from machine import ADC, Pin
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import time
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from pimoroni import Buzzer
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from picographics import PicoGraphics, DISPLAY_PICO_EXPLORER
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display = PicoGraphics(display=DISPLAY_PICO_EXPLORER)
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buzzer = Buzzer(0)
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vsys = ADC(29) # reads the system input voltage
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charging = Pin(24, Pin.IN) # reading GP24 tells us whether or not USB power is connected
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conversion_factor = 3 * 3.3 / 65535
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full_battery = 4.2 # reference voltages for a full/empty battery, in volts
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empty_battery = 2.8 # the values could vary by battery size/manufacturer so you might need to adjust them
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# Create some pen colours for drawing with
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BLACK = display.create_pen(0, 0, 0)
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GREY = display.create_pen(190, 190, 190)
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GREEN = display.create_pen(0, 255, 0)
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RED = display.create_pen(255, 0, 0)
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while True:
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buzzer.set_tone(0)
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# convert the raw ADC read into a voltage, and then a percentage
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voltage = vsys.read_u16() * conversion_factor
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percentage = 100 * ((voltage - empty_battery) / (full_battery - empty_battery))
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if percentage > 100:
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percentage = 100
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# draw the battery outline
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display.set_pen(BLACK)
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display.clear()
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display.set_pen(GREY)
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display.rectangle(0, 0, 220, 135)
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display.rectangle(220, 40, 20, 55)
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display.set_pen(BLACK)
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display.rectangle(3, 3, 214, 129)
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# draw a green box for the battery level
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display.set_pen(GREEN)
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display.rectangle(5, 5, int((210 / 100) * percentage), 125)
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# add text
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display.set_pen(RED)
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if charging.value() == 1: # if it's plugged into USB power...
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display.text("Charging!", 15, 90, 240, 4)
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display.text('{:.2f}'.format(voltage) + "v", 15, 10, 240, 5)
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display.text('{:.0f}%'.format(percentage), 15, 50, 240, 5)
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# Low battery alarm! (you'll need to have GP0 and AUDIO connected with a jumper wire)
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if percentage < 5: # if the battery is less than 5%
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buzzer.set_tone(262) # then make an annoying noise
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display.update()
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time.sleep(0.5)
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