【得捷电子Follow me第1期】+任务一到四的经验总结
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本帖最后由 蓝小鹏 于 2023-6-30 20:37 编辑
6月30日
■ 内容二： 项目总结报告
1. 项目描述（800字左右，注意格式整洁）
2. 各功能对应的主要代码片段及说明
任务1：熟悉micropython的基本语法
安装软件
选择
任务2：驱动外设
a.实现了led闪烁
import machine
import utime
led = machine.Pin("LED", machine.Pin.OUT)
while True:
led.on()
utime.sleep(1)
led.off()
utime.sleep(1)
b.点亮OLED显示屏
先保存ssd1306文件
# MicroPython SSD1306 OLED driver, I2C and SPI interfaces
from micropython import const
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)
# Subclassing FrameBuffer provides support for graphics primitives
# http://docs.micropython.org/en/latest/pyboard/library/framebuf.html
class SSD1306(framebuf.FrameBuffer):
def __init__(self, width, height, external_vcc):
self.width = width
self.height = height
self.external_vcc = external_vcc
self.pages = self.height // 8
self.buffer = bytearray(self.pages * self.width)
super().__init__(self.buffer, self.width, self.height, framebuf.MONO_VLSB)
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.width > 2 * self.height 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 poweron(self):
self.write_cmd(SET_DISP | 0x01)
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_data(self.buffer)
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)
self.write_list = [b"\x40", None] # Co=0, D/C#=1
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_data(self, buf):
self.write_list[1] = buf
self.i2c.writevto(self.addr, self.write_list)
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
import time
self.res(1)
time.sleep_ms(1)
self.res(0)
time.sleep_ms(10)
self.res(1)
super().__init__(width, height, external_vcc)
def write_cmd(self, cmd):
self.spi.init(baudrate=self.rate, polarity=0, phase=0)
self.cs(1)
self.dc(0)
self.cs(0)
self.spi.write(bytearray([cmd]))
self.cs(1)
def write_data(self, buf):
self.spi.init(baudrate=self.rate, polarity=0, phase=0)
self.cs(1)
self.dc(1)
self.cs(0)
self.spi.write(buf)
self.cs(1)
输出hello world
from ssd1306 import SSD1306_I2C
from machine import Pin, I2C
from time import sleep
i2c = I2C(1, scl=Pin(7), sda=Pin(6), freq=400000) # Grove - OLED Display 0.96" (SSD1315)
oled = SSD1306_I2C(128, 64, i2c)
while True:
oled.fill(0) # clear
oled.text("Hello,World!", 0, 0)
oled.show()
#sleep(0.5)
c.驱动蜂鸣器发出声音
import machine
from machine import Pin
import utime
buzzer = machine.Pin("GP26", machine.Pin.OUT)
while True:
buzzer.on()
utime.sleep(1)
buzzer.off()
utime.sleep(1)
任务3：同步网络时间
a.wifi实现联网
import network
import time
ssid = 'XXX'
password = 'XXXXX'
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.connect(ssid, password)
# Wait for connect or fail
max_wait = 10
while max_wait > 0:
if wlan.status() < 0 or wlan.status() >= 3:
break
max_wait -= 1
print('waiting for connection...')
time.sleep(1)
# Handle connection error
if wlan.status() != 3:
raise RuntimeError('network connection failed')
else:
print('connected')
status = wlan.ifconfig()
print('ip = ' + status[0])
b.实现同步时间
import network
import time
from time import sleep
from ssd1306 import SSD1306_I2C
from machine import Pin, I2C
ssid = 'XXXXX'
password = 'XXXXX'
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.connect(ssid, password)
# Wait for connect or fail
max_wait = 10
while max_wait > 0:
if wlan.status() < 0 or wlan.status() >= 3:
break
max_wait -= 1
print('waiting for connection...')
time.sleep(1)
# Handle connection error
if wlan.status() != 3:
raise RuntimeError('network connection failed')
else:
print('connected')
status = wlan.ifconfig()
print('ip = ' + status[0])
import ntptime
def sync_ntp():
ntptime.NTP_DELTA = 3155644800 # 可选 UTC+8偏移时间（秒），不设置就是UTC0
ntptime.host = 'ntp1.aliyun.com' # 可选，ntp服务器，默认是"pool.ntp.org"
ntptime.settime() # 修改设备时间,到这就已经设置好了
sync_ntp()
from machine import RTC
from time import sleep
i2c = I2C(1, scl=Pin(7), sda=Pin(6), freq=400000) # Grove - OLED Display 0.96" (SSD1315)
oled = SSD1306_I2C(128, 64, i2c)
oled.fill(0) # clear
oled.text("NTP Time!", 0, 0)
oled.show()
while True:
rtc = RTC()
print(rtc.datetime())
oled.fill(0) # clear
oled.text("NTP Time!", 0, 0)
s = ','.join(str(i) for i in rtc.datetime())
oled.text(s, 0, 16)
oled.show()
sleep(1)
任务4：实现定位功能
实现定位
from machine import UART, Pin
import time
from micropyGPS import MicropyGPS
uart0 = UART(0, baudrate=9600, tx=Pin(0), rx=Pin(1))
time.sleep(0.1)
rxData = bytes()
my_gps = MicropyGPS()
while True:
if uart0.any():
stat = my_gps.update(uart0.read(1).decode("ascii"))
# Note the conversion to to chr, UART outputs ints normally
if stat:
print("Latitude:", my_gps.latitude_string())
print("Longitude:", my_gps.longitude_string())
print(
"Speed:",
my_gps.speed_string("kph"),
"or",
my_gps.speed_string("mph"),
"or",
my_gps.speed_string("knot"),
)
print("Date (Long Format):", my_gps.date_string("long"))
print("Date (Short D/M/Y Format):", my_gps.date_string("s_dmy"))
print("timestamp (Short [H,M,S] Format):", my_gps.timestamp)
stat = None
3. 功能展示
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