RB10 : שיעור 016 – שימוש במסך OLED – מבוא לפונקציות , משפט תנאי , לימוד רובוטיקה
1 נבנה את הפרוייקט
נגיש לאתר https://wokwi.com/
2.נעתיק את הקוד
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# www.robotronix.co.il robotics blocks # חוג רובוטיקה , מיקרו פייתון , רובוטיקס בלוקס # https://robotronix.co.il/%d7%a8%d7%95%d7%91%d7%95%d7%98%d7%a8%d7%95%d7%a0%d7%99%d7%a7%d7%a1-%d7%9b%d7%9c%d7%9c%d7%99/%d7%97%d7%95%d7%92-%d7%a8%d7%95%d7%91%d7%95%d7%98%d7%99%d7%a7%d7%94-%d7%a1%d7%a4%d7%a8%d7%99%d7%99%d7%aa-%d7%93%d7%95%d7%92%d7%9e%d7%90%d7%95%d7%aa-%d7%9e%d7%99%d7%a7%d7%a8%d7%95-%d7%a4%d7%99/ import time from machine import Pin, I2C import ssd1306 print("Hello, Robotics blocks - led + oled ") led = Pin(2,Pin.OUT) # ESP32 Pin assignment i2c = I2C(0, scl=Pin(22), sda=Pin(21)) oled_width = 128 oled_height = 64 oled = ssd1306.SSD1306_I2C(oled_width, oled_height, i2c) oled.text('Robotics Blocks', 2, 10) oled.text('Led + I2c example ', 2, 26) oled.show() time.sleep(3) c=0 while True: led.value(1) oled.fill(0) oled.text('Robotics Blocks', 2, 10) oled.text('led on - 0V', 2, 26) oled.text('c : ' + str(c), 2, 36) oled.show() time.sleep(2) led.value(0) oled.fill(0) oled.text('Robotics Blocks', 2, 10) oled.text('led off - 3.3V', 2, 26) oled.text('c : ' + str(c), 2, 36) oled.show() time.sleep(2) c=c+1 |
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{ "version": 1, "author": "yaniv maor , robotics blocks ", "editor": "wokwi", "parts": [ { "type": "wokwi-esp32-devkit-v1", "id": "esp", "top": -39.35, "left": -47.42, "attrs": { "env": "micropython-20220618-v1.19.1" } }, { "type": "wokwi-led", "id": "led1", "top": 43.12, "left": 165.95, "attrs": { "color": "red" } }, { "type": "board-ssd1306", "id": "oled1", "top": 59.59, "left": 204.23, "attrs": {} } ], "connections": [ [ "esp:TX0", "$serialMonitor:RX", "", [] ], [ "esp:RX0", "$serialMonitor:TX", "", [] ], [ "led1:A", "esp:D2", "green", [ "v0" ] ], [ "led1:C", "esp:GND.1", "black", [ "v0" ] ], [ "esp:3V3", "oled1:VCC", "red", [ "v1.03", "h90.73", "v-86.18", "h52.53" ] ], [ "oled1:SCL", "esp:D22", "purple", [ "v0" ] ], [ "esp:D21", "oled1:SDA", "yellow", [ "h215.99", "v5.5" ] ], [ "oled1:GND", "esp:GND.1", "black", [ "v-19.68", "h-71.88", "v82.94", "h-85.68", "v-19.14" ] ] ], "dependencies": {} } |
1.1 הוספת ספרייה במיקרופייתון ב WOKWI :
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#MicroPython SSD1306 OLED driver, I2C and SPI interfaces created by Adafruit import time import framebuf # register definitions SET_CONTRAST = const(0x81) SET_ENTIRE_ON = const(0xa4) SET_NORM_INV = const(0xa6) SET_DISP = const(0xae) SET_MEM_ADDR = const(0x20) SET_COL_ADDR = const(0x21) SET_PAGE_ADDR = const(0x22) SET_DISP_START_LINE = const(0x40) SET_SEG_REMAP = const(0xa0) SET_MUX_RATIO = const(0xa8) SET_COM_OUT_DIR = const(0xc0) SET_DISP_OFFSET = const(0xd3) SET_COM_PIN_CFG = const(0xda) SET_DISP_CLK_DIV = const(0xd5) SET_PRECHARGE = const(0xd9) SET_VCOM_DESEL = const(0xdb) SET_CHARGE_PUMP = const(0x8d) class SSD1306: def __init__(self, width, height, external_vcc): self.width = width self.height = height self.external_vcc = external_vcc self.pages = self.height // 8 # Note the subclass must initialize self.framebuf to a framebuffer. # This is necessary because the underlying data buffer is different # between I2C and SPI implementations (I2C needs an extra byte). self.poweron() self.init_display() def init_display(self): for cmd in ( SET_DISP | 0x00, # off # address setting SET_MEM_ADDR, 0x00, # horizontal # resolution and layout SET_DISP_START_LINE | 0x00, SET_SEG_REMAP | 0x01, # column addr 127 mapped to SEG0 SET_MUX_RATIO, self.height - 1, SET_COM_OUT_DIR | 0x08, # scan from COM[N] to COM0 SET_DISP_OFFSET, 0x00, SET_COM_PIN_CFG, 0x02 if self.height == 32 else 0x12, # timing and driving scheme SET_DISP_CLK_DIV, 0x80, SET_PRECHARGE, 0x22 if self.external_vcc else 0xf1, SET_VCOM_DESEL, 0x30, # 0.83*Vcc # display SET_CONTRAST, 0xff, # maximum SET_ENTIRE_ON, # output follows RAM contents SET_NORM_INV, # not inverted # charge pump SET_CHARGE_PUMP, 0x10 if self.external_vcc else 0x14, SET_DISP | 0x01): # on self.write_cmd(cmd) self.fill(0) self.show() def poweroff(self): self.write_cmd(SET_DISP | 0x00) def contrast(self, contrast): self.write_cmd(SET_CONTRAST) self.write_cmd(contrast) def invert(self, invert): self.write_cmd(SET_NORM_INV | (invert & 1)) def show(self): x0 = 0 x1 = self.width - 1 if self.width == 64: # displays with width of 64 pixels are shifted by 32 x0 += 32 x1 += 32 self.write_cmd(SET_COL_ADDR) self.write_cmd(x0) self.write_cmd(x1) self.write_cmd(SET_PAGE_ADDR) self.write_cmd(0) self.write_cmd(self.pages - 1) self.write_framebuf() def fill(self, col): self.framebuf.fill(col) def pixel(self, x, y, col): self.framebuf.pixel(x, y, col) def scroll(self, dx, dy): self.framebuf.scroll(dx, dy) def text(self, string, x, y, col=1): self.framebuf.text(string, x, y, col) class SSD1306_I2C(SSD1306): def __init__(self, width, height, i2c, addr=0x3c, external_vcc=False): self.i2c = i2c self.addr = addr self.temp = bytearray(2) # Add an extra byte to the data buffer to hold an I2C data/command byte # to use hardware-compatible I2C transactions. A memoryview of the # buffer is used to mask this byte from the framebuffer operations # (without a major memory hit as memoryview doesn't copy to a separate # buffer). self.buffer = bytearray(((height // 8) * width) + 1) self.buffer[0] = 0x40 # Set first byte of data buffer to Co=0, D/C=1 self.framebuf = framebuf.FrameBuffer1(memoryview(self.buffer)[1:], width, height) super().__init__(width, height, external_vcc) def write_cmd(self, cmd): self.temp[0] = 0x80 # Co=1, D/C#=0 self.temp[1] = cmd self.i2c.writeto(self.addr, self.temp) def write_framebuf(self): # Blast out the frame buffer using a single I2C transaction to support # hardware I2C interfaces. self.i2c.writeto(self.addr, self.buffer) def poweron(self): pass class SSD1306_SPI(SSD1306): def __init__(self, width, height, spi, dc, res, cs, external_vcc=False): self.rate = 10 * 1024 * 1024 dc.init(dc.OUT, value=0) res.init(res.OUT, value=0) cs.init(cs.OUT, value=1) self.spi = spi self.dc = dc self.res = res self.cs = cs self.buffer = bytearray((height // 8) * width) self.framebuf = framebuf.FrameBuffer1(self.buffer, width, height) super().__init__(width, height, external_vcc) def write_cmd(self, cmd): self.spi.init(baudrate=self.rate, polarity=0, phase=0) self.cs.high() self.dc.low() self.cs.low() self.spi.write(bytearray([cmd])) self.cs.high() def write_framebuf(self): self.spi.init(baudrate=self.rate, polarity=0, phase=0) self.cs.high() self.dc.high() self.cs.low() self.spi.write(self.buffer) self.cs.high() def poweron(self): self.res.high() time.sleep_ms(1) self.res.low() time.sleep_ms(10) self.res.high() |
2.2 הרץ את התכונה – המורה יעבור על התוכנית שורה שורה
2.3 שנה שהלד יהבהב כל 4 שניות
2.5 בניית פונקציה פשוטה : שנה את קוד התוכנה
2.6 הוסף משתנה גלובלי d = משתנה זה יגדיר את זמן השהייה
2.7 הוסף משפט תנאי :
אם זמן d גדול מ 3 שניות -רשום הודע לטרמניל זמן גדול מ 3 שניות
