boot_ssd.py

import logging
import micropython

micropython.alloc_emergency_exception_buf(100)

# serial stuff also here: https://github.com/micropython/micropython/blob/master/tools/pyboard.py

logger = logging.getLogger(__name__)
logger.setLevel(logging.DEBUG)

logger.debug("STARTING boot_ssd.py")

import machine
import config

from ssd1306 import SSD1306_I2C
from sh1106 import SH1106_I2C

ssd: SH1106_I2C | SSD1306_I2C | None = None

sdapin: machine.Pin | None = None
sclpin: machine.Pin | None = None
soft_i2cbus: machine.SoftI2C | None = None

def setup_pins():
    global soft_i2cbus, sdapin, sclpin, ssd

    logger.info("Setting up pins")

    if config.data["i2c"]["enabled"]:
        if not sdapin:
            sdapin = machine.Pin(config.data["i2c"]["sda_pin"])
        else:
            logger.debug("sdapin already created")

        if not sclpin:
            sclpin = machine.Pin(config.data["i2c"]["scl_pin"])
        else:
            logger.debug("sclpin already created")

        if not soft_i2cbus:
            soft_i2cbus = machine.SoftI2C(scl=sclpin, sda=sdapin)
            logger.debug(f"{soft_i2cbus=}")

            k: list = soft_i2cbus.scan()
            for i in k:
                logger.debug(f"i2c_scan: {i=}")
        else:
            logger.debug("i2c already created")

        if config.data["ssd1306"]["enabled"]:
            flip_en: bool = False
            if "flip_en" in config.data["ssd1306"] and config.data["ssd1306"]["flip_en"]:
                flip_en = True

            ssd = SSD1306_I2C(width=config.data["ssd1306"]["width"], height=config.data["ssd1306"]["height"],
                              i2c=soft_i2cbus, addr=config.data["ssd1306"]["address"])
            if flip_en:
                ssd.rotate(180)

            ssd.init_display()

            ssd.text(f"_SCREEN_INIT", 0, 0, 1)
            ssd.show()

        if config.data["sh1106"]["enabled"]:
            flip_en: bool = config.data["sh1106"]["flip_en"]
            ssd = SH1106_I2C(width=config.data["sh1106"]["width"], height=config.data["sh1106"]["height"],
                             i2c=soft_i2cbus, addr=config.data["sh1106"]["address"], rotate=180 if flip_en else 0)
            ssd.init_display()

            ssd.text(f"_SCREEN_INIT", 0, 0, 1)
            ssd.show()


def init_ssd():
    global ssd
    ssd.poweron()
    ssd.fill(0)
    ssd.text("_SCREEN_INIT", 0, 12, 1)
    ssd.show()

def setup():
    setup_pins()
    init_ssd()

def disable():
    global ssd, sdapin, sclpin, soft_i2cbus

    ssd = None
    sdapin = None
    sclpin = None
    soft_i2cbus = None