125 lines
3.1 KiB
Python
125 lines
3.1 KiB
Python
# SPDX-License-Identifier: LGPL-3.0-or-later
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# Copyright (C) 2020 Daniel Thompson
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def nop():
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pass
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schedule = nop
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def _callback(obj):
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schedule()
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# Start measuring time (and feeding the watchdog) before *anything* else
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from machine import RTCounter
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from drivers.nrf_rtc import RTC
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rtc = RTC(RTCounter(1, mode=RTCounter.PERIODIC, period=1, callback=_callback))
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rtc.counter.start()
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import gc
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import os
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import time
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import draw565
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from machine import I2C
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from machine import Pin
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from machine import SPI
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from drivers.battery import Battery
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from drivers.cst816s import CST816S
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from drivers.signal import Signal
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from drivers.st7789 import ST7789_SPI
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from drivers.vibrator import Vibrator
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from flash.flash_spi import FLASH
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class Backlight(object):
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lo = Pin("BL_LO", Pin.OUT, value=0)
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mid = Pin("BL_MID", Pin.OUT, value=1)
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hi = Pin("BL_HI", Pin.OUT, value=1)
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def __init__(self, level=1):
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self.set(level)
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def set(self, level):
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hi = 1
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mid = 1
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lo = 1
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if level >= 3:
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hi = 0
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elif level == 2:
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mid = 0
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elif level == 1:
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lo = 0
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self.hi(hi)
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self.mid(mid)
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self.lo(lo)
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# Setup the display (and manage the backlight)
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backlight = Backlight(0)
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spi = SPI(0)
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spi.init(polarity=1, phase=1, baudrate=8000000)
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display = ST7789_SPI(240, 240, spi,
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cs=Pin("DISP_CS", Pin.OUT),
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dc=Pin("DISP_DC", Pin.OUT),
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res=Pin("DISP_RST", Pin.OUT))
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drawable = draw565.Draw565(display)
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def boot_msg(s):
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drawable.string(s, 0, 108, width=240)
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if safe_mode:
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time.sleep_ms(500)
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safe_mode = False
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boot_msg("Init button")
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button = Pin('BUTTON', Pin.IN)
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safe_mode = button.value()
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if safe_mode:
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backlight.set(1)
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time.sleep(1)
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try:
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# Setup the last few bits and pieces
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boot_msg("Init hardware")
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battery = Battery(
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Pin('BATTERY', Pin.IN),
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Signal(Pin('CHARGING', Pin.IN), invert=True),
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Signal(Pin('USB_PWR', Pin.IN), invert=True))
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i2c = I2C(1, scl='I2C_SCL', sda='I2C_SDA')
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touch = CST816S(i2c,
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Pin('TP_INT', Pin.IN), Pin('TP_RST', Pin.OUT, value=0),
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_callback)
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vibrator = Vibrator(Pin('MOTOR', Pin.OUT, value=0), active_low=True)
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# Mount the filesystem
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boot_msg("Init SPINOR")
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flash = FLASH(spi, (Pin('NOR_CS', Pin.OUT, value=1),))
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try:
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boot_msg("Mount FS")
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os.mount(flash, '/flash')
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except AttributeError:
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# Format the filesystem (and provide a default version of main.py)
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boot_msg("Format FS")
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os.VfsLfs2.mkfs(flash)
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boot_msg("Retry mount FS")
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os.mount(flash,'/flash')
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boot_msg("Write main.py")
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with open('/flash/main.py', 'w') as f:
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f.write('''\
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#include('main.py')
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''')
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# Only change directory if the button is not pressed (this will
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# allow us access to fix any problems with main.py)!
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if not safe_mode:
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boot_msg("Enter /flash")
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os.chdir('/flash')
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boot_msg("main.py")
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else:
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boot_msg("Safe mode")
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except:
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drawable.string("FAILED", 0, 136, width=240)
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backlight.set(1)
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gc.collect()
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free = gc.mem_free()
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