[讨论]

ESP-mp-01开发板I2C驱动OLED显示

2016-12-13 20:09:06 3119

0 ESP-mp-01开发板是基于ESP8266 Soc的可以运行MicroPython的开发板，不像STM32版本的Pyboard，ESP8266本身没有USB，只能通过TTL串口和Wifi访问ESP8266。文件传输需要借助uPyLoader或ESPyHarp等工具来进行文件传输。此次使用开发板的I2C功能来驱动OLED显示。【1】硬件连接： ESP8266 I2C对应的引脚为Pin(14)--SCL，Pin(2)--SDA: 【2】程序源码： # main.py -- put your code here! import machine from machine import Pin,I2C import ssd1306 import math import time # construct an I2C bus i2c = I2C(scl=Pin(14), sda=Pin(2), freq=100000) display = ssd1306.SSD1306_I2C(128,64, i2c) led_blue = machine.Pin(2, Pin.OUT) # 设置 GPIO2 为输出 led_blue.high() try: display.poweron() display.init_display() display.text('PYBNano I2C OLED',1,1) display.text('Hi, MicroPython!',1,16) display.text('By: hbzjt2012',1,31) # Write display buffer display.show() time.sleep(10) display.fill(0) for x in range(0, 128): display.pixel(x, 32+int(math.sin(x/64math.pi)7 + 8), 1) display.show() time.sleep(10) display.fill(0) x = 0 y = 0 direction_x = True direction_y = True while True: # Clear the previous lines prev_x = x prev_y = y # Move bars x += (1 if direction_x else -1) y += (1 if direction_y else -1) # Bounce back, if required if x == 128: direction_x = False x = 126 elif x == -1: direction_x = True x = 1 if y == 64: direction_y = False y = 63 elif y == -1: direction_y = True y = 1 # Draw new lines for i in range(64): display.pixel(prev_x, i, False) display.pixel(x, i, True) for i in range(128): display.pixel(i, prev_y, False) display.pixel(i, y, True) # Make sure the corners are active display.pixel(0, 0, True) display.pixel(127, 0, True) display.pixel(0, 63, True) display.pixel(127, 63, True) # Write display buffer display.show() except Exception as ex: led_blue.low() print('Unexpected error: {0}'.format(ex)) display.poweroff() 复制代码【3】效果演示： 0
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