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import uPyConfig
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import init_sample
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hw = uPyConfig.esp8266(variant='d1-r2')
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#print family, variant and IP address (using oled, if available on-board)
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init_sample.init_sample(hw)
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# Main app
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from uPySensor import LM75A, SHT21
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thsen=SHT21(hw.i2c.bus)
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tsen=LM75A(hw.i2c.bus)
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json={
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'sht21_t': '{"temperature":"%0.3f"}',
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'sht21_h': '{"humidity":"%0.3f"}',
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'sht21': '{"temperature":"%0.3f","humidity":"%0.3f"}',
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'lm75a_t': '{"temperature":"%0.1f"}',
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'lm75a': '{"temperature":"%0.1f"}',
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}
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json_all='{"sht21":{"temperature":"%0.3f","humidity":"%0.3f"},"lm75a":{"temperature":"%0.1f"}}'
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def header():
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return "HTTP/1.1 200 OK\r\n" \
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"Content-Type: application/json\r\n" \
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"Server: horny\r\n" \
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"\r\n"
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def get():
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return json_all % (thsen.read_tempC(), thsen.read_hum(), tsen.read_tempC())
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def get_sht21_t():
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return json['sht21_t'] % (thsen.read_tempC())
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def get_sht21_h():
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return json['sht21_h'] % (thsen.read_hum())
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def get_sht21():
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return json['sht21'] % (thsen.read_tempC(), thsen.read_hum())
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def get_lm75a_t():
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return json['lm75a_t'] % (tsen.read_tempC())
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def get_lm75a():
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return json['lm75a'] % (tsen.read_tempC())
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#begin web
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import socket
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wssock=socket.getaddrinfo("0.0.0.0",80)[0][-1]
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wss=socket.socket()
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wss.bind(wssock)
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wss.listen(1)
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print("Server started on 0.0.0.0:80")
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#main loop
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while True:
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wcl, wcsock = wss.accept()
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print("Client connected")
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wclfh = wcl.makefile('rwb', 0)
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jsn=''
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while True:
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wcline = wclfh.readline()
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if not wcline or wcline == b'\r\n': break
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wcline=wcline.split(b' ')
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if len(wcline) == 3 and wcline[2].startswith('HTTP'):
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if wcline[0] != b'GET': wcl.close()
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elif wcline[1] == b'/': jsn=get()
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elif wcline[1] == b'/sht21': jsn=get_sht21()
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elif wcline[1] == b'/lm75a': jsn=get_lm75a()
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wcl.send(header()+jsn)
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wcl.close()
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# MicroPython SSD1306 OLED driver, I2C and SPI interfaces
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import time
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import framebuf
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# register definitions
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SET_CONTRAST = const(0x81)
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SET_ENTIRE_ON = const(0xa4)
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SET_NORM_INV = const(0xa6)
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SET_DISP = const(0xae)
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SET_MEM_ADDR = const(0x20)
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SET_COL_ADDR = const(0x21)
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SET_PAGE_ADDR = const(0x22)
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SET_DISP_START_LINE = const(0x40)
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SET_SEG_REMAP = const(0xa0)
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SET_MUX_RATIO = const(0xa8)
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SET_COM_OUT_DIR = const(0xc0)
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SET_DISP_OFFSET = const(0xd3)
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SET_COM_PIN_CFG = const(0xda)
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SET_DISP_CLK_DIV = const(0xd5)
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SET_PRECHARGE = const(0xd9)
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SET_VCOM_DESEL = const(0xdb)
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SET_CHARGE_PUMP = const(0x8d)
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class SSD1306:
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def __init__(self, width, height, external_vcc):
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self.width = width
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self.height = height
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self.external_vcc = external_vcc
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self.pages = self.height // 8
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# Note the subclass must initialize self.framebuf to a framebuffer.
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# This is necessary because the underlying data buffer is different
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# between I2C and SPI implementations (I2C needs an extra byte).
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self.poweron()
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self.init_display()
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def init_display(self):
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for cmd in (
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SET_DISP | 0x00, # off
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# address setting
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SET_MEM_ADDR, 0x00, # horizontal
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# resolution and layout
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SET_DISP_START_LINE | 0x00,
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SET_SEG_REMAP | 0x01, # column addr 127 mapped to SEG0
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SET_MUX_RATIO, self.height - 1,
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SET_COM_OUT_DIR | 0x08, # scan from COM[N] to COM0
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SET_DISP_OFFSET, 0x00,
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SET_COM_PIN_CFG, 0x02 if self.height == 32 else 0x12,
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# timing and driving scheme
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SET_DISP_CLK_DIV, 0x80,
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SET_PRECHARGE, 0x22 if self.external_vcc else 0xf1,
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SET_VCOM_DESEL, 0x30, # 0.83*Vcc
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# display
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SET_CONTRAST, 0xff, # maximum
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SET_ENTIRE_ON, # output follows RAM contents
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SET_NORM_INV, # not inverted
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# charge pump
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SET_CHARGE_PUMP, 0x10 if self.external_vcc else 0x14,
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SET_DISP | 0x01): # on
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self.write_cmd(cmd)
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self.fill(0)
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self.show()
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def poweroff(self):
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self.write_cmd(SET_DISP | 0x00)
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def contrast(self, contrast):
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self.write_cmd(SET_CONTRAST)
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self.write_cmd(contrast)
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def invert(self, invert):
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self.write_cmd(SET_NORM_INV | (invert & 1))
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def show(self):
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x0 = 0
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x1 = self.width - 1
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if self.width == 64:
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# displays with width of 64 pixels are shifted by 32
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x0 += 32
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x1 += 32
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self.write_cmd(SET_COL_ADDR)
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self.write_cmd(x0)
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self.write_cmd(x1)
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self.write_cmd(SET_PAGE_ADDR)
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self.write_cmd(0)
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self.write_cmd(self.pages - 1)
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self.write_framebuf()
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def fill(self, col):
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self.framebuf.fill(col)
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def pixel(self, x, y, col):
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self.framebuf.pixel(x, y, col)
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def scroll(self, dx, dy):
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self.framebuf.scroll(dx, dy)
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def text(self, string, x, y, col=1):
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self.framebuf.text(string, x, y, col)
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class SSD1306_I2C(SSD1306):
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def __init__(self, width, height, i2c, addr=0x3c, external_vcc=False):
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self.i2c = i2c
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self.addr = addr
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self.temp = bytearray(2)
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# Add an extra byte to the data buffer to hold an I2C data/command byte
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# to use hardware-compatible I2C transactions. A memoryview of the
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# buffer is used to mask this byte from the framebuffer operations
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# (without a major memory hit as memoryview doesn't copy to a separate
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# buffer).
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self.buffer = bytearray(((height // 8) * width) + 1)
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self.buffer[0] = 0x40 # Set first byte of data buffer to Co=0, D/C=1
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self.framebuf = framebuf.FrameBuffer1(memoryview(self.buffer)[1:], width, height)
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super().__init__(width, height, external_vcc)
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def write_cmd(self, cmd):
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self.temp[0] = 0x80 # Co=1, D/C#=0
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self.temp[1] = cmd
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self.i2c.writeto(self.addr, self.temp)
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def write_framebuf(self):
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# Blast out the frame buffer using a single I2C transaction to support
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# hardware I2C interfaces.
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self.i2c.writeto(self.addr, self.buffer)
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def poweron(self):
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pass
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class SSD1306_SPI(SSD1306):
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def __init__(self, width, height, spi, dc, res, cs, external_vcc=False):
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self.rate = 10 * 1024 * 1024
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dc.init(dc.OUT, value=0)
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res.init(res.OUT, value=0)
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cs.init(cs.OUT, value=1)
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self.spi = spi
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self.dc = dc
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self.res = res
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self.cs = cs
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self.buffer = bytearray((height // 8) * width)
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self.framebuf = framebuf.FrameBuffer1(self.buffer, width, height)
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super().__init__(width, height, external_vcc)
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def write_cmd(self, cmd):
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self.spi.init(baudrate=self.rate, polarity=0, phase=0)
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self.cs.high()
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self.dc.low()
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self.cs.low()
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self.spi.write(bytearray([cmd]))
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self.cs.high()
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def write_framebuf(self):
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self.spi.init(baudrate=self.rate, polarity=0, phase=0)
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self.cs.high()
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self.dc.high()
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self.cs.low()
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self.spi.write(self.buffer)
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self.cs.high()
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def poweron(self):
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self.res.high()
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time.sleep_ms(1)
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self.res.low()
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time.sleep_ms(10)
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self.res.high()
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class uPyConfig:
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from machine import I2C, Pin
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class features:
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class connectivity:
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wifi = False
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bluetooth = False
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bluetooth_le = False
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lora = False
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class display:
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oled = False
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class sensor:
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capacitive = False
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temperature = False
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hall_effect = False
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class _i2c:
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from machine import I2C, Pin
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def load_handle(self):
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self.bus = self.I2C(scl=self.scl, sda=self.sda)
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self.bus.init(scl=self.scl, sda=self.sda)
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def __init__(self, scl, sda):
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self.scl=self.Pin(scl)
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self.sda=self.Pin(sda)
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self.load_handle()
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class _oled:
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from machine import Pin
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from time import sleep_ms
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addr = 0x0
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rst = 0
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rst_hold = False
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height = 0
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width = 0
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def load_handle(self):
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if self.rst_hold:
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self.rst = self.Pin(self.rst, self.Pin.OUT)
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self.rst.value(0)
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self.sleep_ms(2)
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self.rst.value(1)
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from ssd1306 import SSD1306_I2C
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self.handle = SSD1306_I2C(self.width, self.height, self.i2c.bus)
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def __init__(self, i2c):
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self.i2c = i2c
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def __init__(self, board_defs):
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self.i2c = self._i2c(board_defs['i2c_scl'], board_defs['i2c_sda'])
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if 'has_wifi' in board_defs.keys(): self.features.connectivity.wifi = True
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if 'has_bluetooth' in board_defs.keys(): self.features.connectivity.bluetooth = True
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if 'has_bluetooth_le' in board_defs.keys(): self.features.connectivity.bluetooth_le = True
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if 'sen_capacitive' in board_defs.keys(): self.features.sensor.capacitive = True
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if 'sen_temperature' in board_defs.keys(): self.features.sensor.temperature = True
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if 'sen_hall' in board_defs.keys(): self.features.sensor.hall_effect = True
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if 'has_oled' in board_defs.keys():
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self.features.display.oled = True
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self.oled = self._oled(self.i2c)
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self.oled.addr = board_defs['oled_addr']
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if 'oled_hold' in board_defs.keys(): self.oled.rst_hold = board_defs['oled_hold']
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if 'oled_rst' in board_defs.keys(): self.oled.rst = board_defs['oled_rst']
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self.oled.width = board_defs['oled_width']
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self.oled.height = board_defs['oled_height']
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self.oled.load_handle()
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class esp8266(uPyConfig):
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family = 'esp8266'
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defaults = {
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'has_wifi': True,
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'i2c_scl': 4,
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'i2c_sda': 5,
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'oled_addr': 0x3c,
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}
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variants = {
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'generic': {},
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'lolinv3': {
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'i2c_scl': 4,
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'i2c_sda': 5,
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},
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'd1-r2': {
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'i2c_scl': 5,
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'i2c_sda': 4,
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},
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'heltec': {
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'i2c_scl': 5,
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'i2c_sda': 4,
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'oled_rst': 16,
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'has_oled': True,
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'oled_hold': True,
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'oled_height': 32,
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'oled_width': 128,
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},
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'ttgo': {
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'i2c_scl': 14,
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'i2c_sda': 2,
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'oled_rst': 4,
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'has_oled': True,
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'oled_hold': True,
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'oled_height': 32,
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'oled_width': 128,
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},
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}
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def __init__(self, variant='generic'):
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if variant in self.variants.keys():
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self.variant = variant
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defs = self.defaults.copy()
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defs.update(self.variants[variant])
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super().__init__(defs)
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else:
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raise ValueError("Board variant '%s' is not known" % variant)
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class esp32(uPyConfig):
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family = 'esp32'
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defaults = {
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'has_wifi': True,
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'has_bluetooth': True,
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'has_bluetooth_le': True,
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'sen_capacitive': True,
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'sen_temperature': True,
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'sen_hall': True,
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'i2c_scl': 4,
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'i2c_sda': 5,
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'oled_addr': 0x3c,
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}
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variants = {
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'generic': {},
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'wemos-lolin32': {
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'has_oled': True,
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'oled_height': 64,
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'oled_width': 128,
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},
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'heltec': {
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'i2c_scl': 15,
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'i2c_sda': 4,
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'oled_rst': 16,
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'has_oled': True,
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'oled_hold': True,
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'oled_height': 64,
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'oled_width': 128,
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},
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}
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def __init__(self, variant='generic'):
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if variant in self.variants.keys():
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self.variant = variant
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defs = self.defaults.copy()
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defs.update(self.variants[variant])
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super().__init__(defs)
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else:
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raise ValueError("Board variant '%s' is not known" % variant)
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@ -0,0 +1,80 @@
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class uPySensor:
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def __init__(self):
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dummy=''
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def sleep_ms(self, delay):
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from time import sleep_ms
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sleep_ms(delay)
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class LM75A(uPySensor):
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LM75A_ADDRESS = 0x48
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def __init__(self, i2c):
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self.i2c = i2c
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def readbyte(self):
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return self.i2c.readfrom(self.LM75A_ADDRESS, 1)
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def readbytes(self, num):
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return self.i2c.readfrom(self.LM75A_ADDRESS, num)
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def read_tempC(self):
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import math
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data = self.readbytes(2)
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return float("%d.%d" % (int(data[0]), math.floor(int(data[1])/23)))
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class SHT21(uPySensor):
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SOFT_RESET = 0xfe
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SHT21_ADDRESS = 0x40
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TRIG_TEMP_NO_HOLD = 0xf3
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TRIG_HUM_NO_HOLD = 0xf5
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def writebyte(self, byte):
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self.i2c.writeto(self.SHT21_ADDRESS, bytearray([byte]))
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def readbyte(self):
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return self.i2c.readfrom(self.SHT21_ADDRESS, 1)
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def readbytes(self, num):
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return self.i2c.readfrom(self.SHT21_ADDRESS, num)
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def __init__(self, i2c):
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self.i2c = i2c
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self.writebyte(self.SOFT_RESET)
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self.sleep_ms(15)
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def read_tempC(self):
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self.writebyte(self.TRIG_TEMP_NO_HOLD)
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self.sleep_ms(250)
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data = self.readbytes(2)
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return self._buffer_to_tempC(data)
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def read_hum(self):
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self.writebyte(self.TRIG_HUM_NO_HOLD)
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self.sleep_ms(250)
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data = self.readbytes(2)
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return self._buffer_to_hum(data)
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def _buffer_to_tempC(self, buf):
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unadj = (buf[0] << 8) + buf[1]
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||||
unadj *= 175.72
|
||||
unadj /= 1 << 16
|
||||
unadj -= 46.85
|
||||
return unadj
|
||||
|
||||
def _buffer_to_hum(self, buf):
|
||||
unadj = (buf[0] << 8) + buf[1]
|
||||
unadj *= 125
|
||||
unadj /= 1 << 16
|
||||
unadj -= 6
|
||||
return unadj
|
||||
|
||||
def close(self):
|
||||
self.i2c.close()
|
||||
|
||||
def __enter__(self):
|
||||
return self
|
||||
|
||||
def __exit__(self, type, value, traceback):
|
||||
self.close()
|
||||
|
|
@ -0,0 +1 @@
|
|||
PASS='WebREPLPassword'
|
||||
Loading…
Reference in New Issue