boochow

from machine import Pin, SPI
spi = SPI(0)
dc = Pin(27,Pin.OUT)
res = Pin(22,Pin.OUT)
cs = Pin(17,Pin.OUT)
d = SSD1306_SPI(128,64,spi,dc,res,cs)
d.text("SPI OK", 0, 0)
d.show()

boochow

class MCP3204:
    def __init__(self, spi, cs):
        self.spi = spi
        self.cs = cs

    def read(self, ch):
        cmd = 6 | (ch >> 2)
        par = (ch << 6) & 0xff
        send = bytearray([cmd, par, 0])
        recv = bytearray(3)

boochow

# stm32 version of wiznet_connect.py
import network
nic = network.Ethernet()
while not nic.isconnected():
    pass
nic.active(True)
nic.ifconfig('dhcp')
print(nic.ifconfig())
import socket
print(socket.getaddrinfo('micropython.org', 80))

boochow

import uio

class FBConsole(uio.IOBase):
    def __init__(self, framebuf, bgcolor=0, fgcolor=-1, width=-1, height=-1):
        self.fb = framebuf
        if width > 0:
            self.width=width
        else:
            try:
                self.width=framebuf.width

boochow

from machine import I2C
i2c=I2C(1)
i2c.init(freq=1000000)
oled = SSD1306_I2C(128, 64, i2c)
console = FBConsole(oled)
os.dupterm(console)

boochow

import gpu
import framebuf
import FBConsole

class RPiScreen(framebuf.FrameBuffer):
    def __init__(self, width, height):
        self.width = width
        self.height = height
        gpu.fb_init(width,height,screen_w=1920,screen_h=1080)
        super().__init__(gpu.fb_data(),width,height,framebuf.RGB565)

boochow

from mcu import mem32

# PWM clock manager
CLK_GND    = const(0)
CLK_OSC    = const(1)
CLK_PLLA   = const(4)
CLK_PLLC   = const(5)
CLK_PLLD   = const(6)
CLK_HDMI   = const(7)

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# GPIO alternate functions
ALT0 = const(4)
ALT1 = const(5)
ALT5 = const(2)

Pin_AF_PWM = {12:(ALT0,0), 13:(ALT0,1), 18:(ALT5,0), 19:(ALT5,1), \
          40:(ALT0,0), 41:(ALT0,1), 45:(ALT0,1), 52:(ALT1,0), 53:(ALT1,1)} 

def select_PWM_pin(pin):
  if pin in Pin_AF_PWM.keys():

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# Hardware PWM
MS_DISABLE = const(0)
MS_ENABLE  = const(1)

MODE_PWM        = const(0)
MODE_SERIALIZER = const(1)

DEFAULT_RANGE = const(960)

class PWM:

boochow

from time import sleep_ms
def test():
  p=PWM(0, pin=18, ms=MS_ENABLE)
  p.freq(1000)
  p.range(DEFAULT_RANGE)
  while True:
    for i in range(DEFAULT_RANGE // 2):
      p.data(i)
      sleep_ms(1)
    for i in range(DEFAULT_RANGE // 2 - 1, 0, -1):