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# SPDX-License-Identifier: LGPL-3.0-or-later
# Copyright (C) 2020 Daniel Thompson
# Start measuring time (and feeding the watchdog) before *anything* else
from machine import RTCounter
from drivers.nrf_rtc import RTC
rtc = RTC(RTCounter(1, mode=RTCounter.PERIODIC))
rtc.counter.start()
import os
import time
import draw565
from machine import I2C
from machine import Pin
#from machine import Signal
from machine import SPI
from drivers.battery import Battery
from drivers.bma421 import BMA421
from drivers.cst816s import CST816S
from drivers.hrs3300 import HRS3300
from drivers.signal import Signal
from drivers.st7789 import ST7789_SPI
from drivers.vibrator import Vibrator
from flash.flash_spi import FLASH
class Backlight(object):
lo = Pin("BL_LO", Pin.OUT, value=0)
mid = Pin("BL_MID", Pin.OUT, value=1)
hi = Pin("BL_HI", Pin.OUT, value=1)
def __init__(self, level=1):
self.set(level)
def set(self, level):
hi = 1
mid = 1
lo = 1
if level >= 3:
hi = 0
elif level == 2:
mid = 0
elif level == 1:
lo = 0
self.hi(hi)
self.mid(mid)
self.lo(lo)
# Setup the display (and manage the backlight)
backlight = Backlight(0)
spi = SPI(0)
spi.init(polarity=1, phase=1, baudrate=8000000)
display = ST7789_SPI(240, 240, spi,
cs=Pin("DISP_CS", Pin.OUT),
dc=Pin("DISP_DC", Pin.OUT),
res=Pin("DISP_RST", Pin.OUT))
drawable = draw565.Draw565(display)
def boot_msg(s):
drawable.string(s, 0, 108, width=240)
if safe_mode:
time.sleep_ms(500)
safe_mode = False
boot_msg("Init button")
button = Pin('BUTTON', Pin.IN)
safe_mode = button.value()
if safe_mode:
backlight.set(1)
time.sleep(1)
try:
# Setup the last few bits and pieces
boot_msg("Init hardware")
battery = Battery(
Pin('BATTERY', Pin.IN),
Signal(Pin('CHARGING', Pin.IN), invert=True),
Signal(Pin('USB_PWR', Pin.IN), invert=True))
i2c = I2C(1, scl='I2C_SCL', sda='I2C_SDA')
accel = BMA421(i2c)
hrs = HRS3300(i2c)
touch = CST816S(i2c, Pin('TP_INT', Pin.IN), Pin('TP_RST', Pin.OUT, value=0))
vibrator = Vibrator(Pin('MOTOR', Pin.OUT, value=0), active_low=True)
# Release flash from deep power-down
boot_msg("Wake SPINOR")
nor_cs = Pin('NOR_CS', Pin.OUT, value=1)
nor_cs(0)
spi.write('\xAB')
nor_cs(1)
# Mount the filesystem
boot_msg("Init SPINOR")
flash = FLASH(spi, (nor_cs,))
try:
boot_msg("Mount FS")
os.mount(flash, '/flash')
except AttributeError:
# Format the filesystem (and provide a default version of main.py)
boot_msg("Format FS")
os.VfsLfs2.mkfs(flash)
boot_msg("Retry mount FS")
os.mount(flash,'/flash')
boot_msg("Write main.py")
with open('/flash/main.py', 'w') as f:
f.write('''\
#include('main.py')
''')
# Only change directory if the button is not pressed (this will
# allow us access to fix any problems with main.py)!
if not safe_mode:
boot_msg("Enter /flash")
os.chdir('/flash')
boot_msg("Run main.py")
else:
boot_msg("Safe mode")
except:
drawable.string("FAILED", 0, 136, width=240)
backlight.set(1)
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