hacking Circuit Python with Bruno

led.py

import busio
import board
import time
import adafruit_aw9523

i2c = busio.I2C(board.SCL, board.SDA)
aw = adafruit_aw9523.AW9523(i2c)
print("Found AW9523")

ON = False
OFF = not ON
leds = []
led_gpios = [1,2,3,4,5,6]
for led_gpio in led_gpios:
    leds.append( aw.get_pin(led_gpio) )

for i in range(len(led_gpios)):
    leds[i].switch_to_output(value=OFF)

green_button = aw.get_pin(0)
red_button = aw.get_pin(11)

for button in [green_button, red_button]:
    button.switch_to_input()


incr = 1
curr_led = 0
prev_red_button_value = red_button.value
prev_green_button_value = green_button.value
next_refresh = time.monotonic() + 0.5
while True:
    now = time.monotonic()
    if prev_red_button_value != red_button.value:
        if not red_button.value:
            incr = {0: 1, 1: 0, -1: 0}.get(incr, 0)
        prev_red_button_value = red_button.value
        #print(f"Red {red_button.value} {incr} {curr_led}")

    if prev_green_button_value != green_button.value:
        if not green_button.value:
            incr *= -1
        prev_green_button_value = green_button.value
        #print(f"Green {green_button.value} {incr} {curr_led}")

    if now >= next_refresh:
        for i in range(len(leds)):
            is_on = curr_led != i
            leds[i].value = is_on
        curr_led = (curr_led + incr) % len(leds)
        next_refresh = time.monotonic() + 0.3

    time.sleep(0.02)

notes from evernote

evernote uuid: 2021-Nov-13-Sat@12:04:44


https://github.com/adafruit/Adafruit_CircuitPython_Bundle/releases


https://learn.adafruit.com/circuitpython-libraries-on-any-computer-with-mcp2221/mac-osx
```
cd ~/Desktop/bruno
python3 -m venv venv && source ./venv/bin/activate && pip install -U pip setuptools wheels &> /dev/null
pip --version
pip install --upgrade pip



pip3 install hidapi
pip3 install adafruit-blinka

# need to set this every time
export BLINKA_MCP2221="1"   ;  echo $BLINKA_MCP2221

python
import board
dir(board)

import hid
hid.enumerate()

import hid
device = hid.device()
device.open(0x04D8, 0x00DD)

```

```
import time
import board
import digitalio
     
led = digitalio.DigitalInOut(board.G0)
led.direction = digitalio.Direction.OUTPUT
     
while True:
    led.value = True
    time.sleep(0.5)
    led.value = False
    time.sleep(0.5)
```



=-==-

STEMMA / STEMMA QT (JST SH) / Devices and Sensors / Adafruit VCNL4040 Proximity and Lux Sensor - STEMMA QT / Qwiic 
https://www.adafruit.com/product/4161

https://learn.adafruit.com/adafruit-vcnl4040-proximity-sensor

```
pip3 install adafruit-circuitpython-vcnl4040
```

address=0x60
https://github.com/adafruit/Adafruit_CircuitPython_VCNL4040/blob/c7ed9221f06004cb085044f7f7ccc54059a9891e/adafruit_vcnl4040.py#L282

```
import time
import board
import adafruit_vcnl4040

i2c = board.I2C()
sensor = adafruit_vcnl4040.VCNL4040(i2c)

while True:
    print("Proximity:", sensor.proximity)
    print("Light: %d lux" % sensor.lux)
    time.sleep(1.0)
```

=-=-=-=-=-=-

Sensors / Temperature / I2C / SPI Digital / Adafruit PCT2075 Temperature Sensor - STEMMA QT / Qwiic 
 https://www.adafruit.com/product/4369
https://learn.adafruit.com/adafruit-pct2075-temperature-sensor

```
This means that the default address for the breakout is 0x37.
```

```
pip3 install adafruit-circuitpython-pct2075
```

```
import time
import board
import adafruit_pct2075
import adafruit_vcnl4040

i2c = board.I2C()
pct = adafruit_pct2075.PCT2075(i2c)
sensor = adafruit_vcnl4040.VCNL4040(i2c)

while True:
    print("Temperature: %.2f C" % pct.temperature)
    print("Proximity:", sensor.proximity)
    print("Light: %d lux" % sensor.lux)
    time.sleep(1.0)

```
=-=-=-=-=-=-

Breakout Boards / Level Shifters & Expanders / Adafruit AW9523 GPIO Expander and LED Driver Breakout 
https://www.adafruit.com/product/4886
https://learn.adafruit.com/adafruit-aw9523-gpio-expander-and-led-driver

```
pip3 install adafruit-circuitpython-aw9523
```

https://github.com/adafruit/Adafruit_CircuitPython_AW9523
https://github.com/adafruit/Adafruit_CircuitPython_AW9523/blob/32f525af792063c19cc73674dbfe13bfbb9159e8/adafruit_aw9523.py#L37
```
_AW9523_DEFAULT_ADDR = const(0x58)
```

```

```


=-=-=-=

devices:
STEMMA / STEMMA QT (JST SH) / Controllers / Adafruit MCP2221A Breakout - General Purpose USB to GPIO ADC I2C 
https://www.adafruit.com/product/4471
https://learn.adafruit.com/circuitpython-libraries-on-any-computer-with-mcp2221


STEMMA / STEMMA QT (JST SH) / Devices and Sensors / Adafruit VCNL4040 Proximity and Lux Sensor - STEMMA QT / Qwiic 
https://www.adafruit.com/product/4161

 
Sensors / Temperature / I2C / SPI Digital / Adafruit PCT2075 Temperature Sensor - STEMMA QT / Qwiic 
 https://www.adafruit.com/product/4369
https://learn.adafruit.com/adafruit-pct2075-temperature-sensor


Breakout Boards / Level Shifters & Expanders / Adafruit AW9523 GPIO Expander and LED Driver Breakout 
https://www.adafruit.com/product/4886


STEMMA / STEMMA QT (JST SH) / Controllers / Adafruit QT Py - SAMD21 Dev Board with STEMMA QT 
https://www.adafruit.com/product/4600
https://learn.adafruit.com/adafruit-qt-py/circuitpython


Sensors / Light / Color / Photo / Adafruit BH1750 Light Sensor - STEMMA QT / Qwiic 
https://www.adafruit.com/product/4681