[TPYBoard-Micropython之会python就能做硬件 2] 利用micropython控制NOKIA 5110屏
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一、本次实验所需器材
1、TPYboard V102板一块
2、DS3231模块 一块
3、NOKIA 5110 LCD 屏 一块
4、杜邦线：若干
===感谢某宝“萝卜城”提供的TPYboard V102豪华版套餐===
二、Nokia 5110 LCD屏使用方法
1、什么是Nokia 5110 LCD?
Nokia 5110 LCD是NOKIA 公司生产的可用于其5110、6150，6100 等系列移动电话的液晶显示模块，国内厂家也生产有类似的兼容产品。该产品除应用于移动电话外，也可广泛应用于各类便携式设备的显示系统。与其它类型的产品相比，该模块具有以下特点：
●84x48 的点阵LCD，可以显示4 行汉字，
●采用串行接口与主处理器进行通信，接口信号线数量大幅度减少，包括电源和地在内的信号线仅有9 条。支持多种串行通信协议（如AVR 单片机的SPI、MCS51 的串口模式０等），传输速率高达4Mbps，可全速写入显示数据，无等待时间。
●可通过导电胶连接模块与印制版
●LCD 控制器／驱动器芯片已绑定到LCD 晶片上，模块的体积很小。
●采用低电压供电，正常显示时的工作电流在200μA 以下，且具有掉电模式。
2、Nokia 5110 LCD 引脚说明
Nokia 5110 LCD共有8个引脚，不同的板子可能标注的英文略有不同，具体含义如下：
3、Tpyboard V102连接5110的方法
这里使用的是SPI连接方法，如果你对什么是SPI连接还不是很清楚，你可以百度一下，这样有利于你从原理上搞明白为什么这么连接。具体针脚对应如下：(由于tpyboard v102有两个spi接口，这里我们选用x1对应接口）
4、5110 LCD字模的获取
（1）英文及数据的显示
本节提供了font.py文件，已经将英文、数字及符号的字模做好，可以直接调用。具体下载见文章最后的下载地址。
（2）汉字取模
汉字取模需要用到字模提取工具，该工具在文章后面的下载地址中可以下载。这里以“欢”为例具体说明使用方法如下：
第一步，打开工具：
第二步，点击新建图像，宽度与高度均为16，点击确定。如图：
第三步，在文字输入区写入要取模的汉字“欢”，按下ctrl+enter。
第四步，点左边菜单里的取模方式，点c51格式，于是得到：
0x04,0x24,0x44,0x84,0x64,0x9C,0x40,0x30,0x0F,0xC8,0x08,0x08,0x28,0x18,0x00,0x00,
0x10,0x08,0x06,0x01,0x82,0x4C,0x20,0x18,0x06,0x01,0x06,0x18,0x20,0x40,0x80,0x00,
第五步，对应填写到chinese.py文件中（该文件可从文章后面的网址下载），如下：
class CN_UTF8:
"""docstring for CN_UTF8"""
#key:values
#key: 使用汉字的UTF-8码
#values: 16*16
# 8*16 上半部分
# 8*16 下半部分
UTF8_CHINESE = {
0xe6aca2:[
,
],#欢
0xe8bf8e:[
,
],#迎
0xe4bdbf:[
,
],#使
0xe794a8:[
,
],#用
0xe78eb0:[
,
],#现
0xe59ca8:[
,
],#在
0xe697b6:[
,
],#时
0xe997b4:[
,
], #间
0xe68891:[
,
], #我
0xe8909d:[
,
], #萝
0xe58d9c:[
,
], #卜
0xe699ba:[
,
], #智
0xe883bd:[
,
],#能
0xe682a8:[
,
],#您
0xe5bd93:[
,
],#当
0xE5898D:[
,
]#前
}
#key 汉字的UTF-8码
#isBottom 确定这次是获取 某个字的 上半部分（0） 还是下半部分（1）
def get_chinese_utf8(self, key,isBottom = 0):
values = self.UTF8_CHINESE
return values
三、显示“萝卜智能”的小实例
按照上面连接后，将tpyboard v102插入电脑usb,在TPFLASH内建立以下文件(可从文章后地址下载）：
#font.py
class FONT6_8:
"""docstring for FONT6_8"""
FONTTYPE6_8 = [
# 20
, # 21 !
, # 22 "
, # 23 #
, # 24 $
, # 25 %
, # 26 &
, # 27 '
, # 28 (
, # 29 )
, # 2a *
, # 2b +
, # 2c ,
, # 2d -
, # 2e .
, # 2f /
, # 30 0
, # 31 1
, # 32 2
, # 33 3
, # 34 4
, # 35 5
, # 36 6
, # 37 7
, # 38 8
, # 39 9
, # 3a :
, # 3b ;
, # 3c <
, # 3d =
, # 3e >
, # 3f ?
, # 40 @
, # 41 A
, # 42 B
, # 43 C
, # 44 D
, # 45 E
, # 46 F
, # 47 G
, # 48 H
, # 49 I
, # 4a J
, # 4b K
, # 4c L
, # 4d M
, # 4e N
, # 4f O
, # 50 P
, # 51 Q
, # 52 R
, # 53 S
, # 54 T
, # 55 U
, # 56 V
, # 57 W
, # 58 X
, # 59 Y
, # 5a Z
, # 5b [
, # 5c \
, # 5d ]
, # 5e ^
, # 5f _
, # 60 `
, # 61 a
, # 62 b
, # 63 c
, # 64 d
, # 65 e
, # 66 f
, # 67 g
, # 68 h
, # 69 i
, # 6a j
, # 6b k
, # 6c l
, # 6d m
, # 6e n
, # 6f o
, # 70 p
, # 71 q
, # 72 r
, # 73 s
, # 74 t
, # 75 u
, # 76 v
, # 77 w
, # 78 x
, # 79 y
, # 7a z
, # 7b [
, # 7c |
, # 7d ]
, # 7e ~
, # 7f (delete)
]
def get_font6_8(self, data):
return self.FONTTYPE6_8 - 0x20]
#chinese.py
//转载请注明：@小五义http://www.cnblogs.com/xiaowuyiQQ群：64770604
class CN_UTF8:
"""docstring for CN_UTF8"""
#key:values
#key: 使用汉字的UTF-8码
#values: 16*16
# 8*16 上半部分
# 8*16 下半部分
UTF8_CHINESE = {
0xe6aca2:[
,
],#欢
0xe8bf8e:[
,
],#迎
0xe4bdbf:[
,
],#使
0xe794a8:[
,
],#用
0xe78eb0:[
,
],#现
0xe59ca8:[
,
],#在
0xe697b6:[
,
],#时
0xe997b4:[
,
], #间
0xe68891:[
,
], #我
0xe8909d:[
,
], #萝
0xe58d9c:[
,
], #卜
0xe699ba:[
,
], #智
0xe883bd:[
,
],#能
0xe682a8:[
,
],#您
0xe5bd93:[
,
],#当
0xE5898D:[
,
]#前
}
#key 汉字的UTF-8码
#isBottom 确定这次是获取 某个字的 上半部分（0） 还是下半部分（1）
def get_chinese_utf8(self, key,isBottom = 0):
values = self.UTF8_CHINESE
return values
#upcd8544.py
//转载请注明：@小五义http://www.cnblogs.com/xiaowuyiQQ群：64770604
# -*- coding: utf-8 -*-
"""
MicroPython PCD8544 driver
(for Nokia 5110 displays)
"""
__author__ = "Markus Birth"
__copyright__= "Copyright 2015, Markus Birth"
__credits__ = ["Markus Birth"]
__license__ = "MIT"
__version__ = "1.0"
__maintainer__ = "Markus Birth"
__email__ = "[email protected]"
__status__ = "Production"
# Datasheet: https://www.sparkfun.com/datasheets/LCD/Monochrome/Nokia5110.pdf
# Inspiration from:
# - https://github.com/inaugurator/upyd5110
# - https://github.com/rm-hull/pcd8544/blob/master/src/lcd.py
#
# PINOUT
# WiPy/pyBoard display function
#
# 3V3 or any Pin => VCC 3.3V logic voltage (0=off, 1=on)
# MOSI => DIN data flow (Master out, Slave in)
# SCK => CLK SPI clock
# any Pin => RST Reset pin (0=reset, 1=normal)
# any Pin => CE Chip Enable (0=listen for input, 1=ignore input)
# any Pin => DC Data/Command (0=commands, 1=data)
# any Pin => LIGHT Light (0=on, 1=off)
# GND => GND
#
# pyBoard "Y" side
# SPI = pyb.SPI(1)
# RST = pyb.Pin('Y4')
# CE = pyb.Pin('Y5')
# DC = pyb.Pin('Y3')
# LIGHT= pyb.Pin('Y2')
# PWR = pyb.Pin('Y1')
#
# pyBoard "X" side
# SPI = pyb.SPI(2)
# RST = pyb.Pin('X4')
# CE = pyb.Pin('X5')
# DC = pyb.Pin('X3')
# LIGHT= pyb.Pin('X2')
# PWR = pyb.Pin('X1')
#
# WiPy (on Exp board, SD and User-LED jumper have to be removed!)
# SPI = machine.SPI(0) # GP14 (CLK) + GP16 (MOSI->DIN), User-LED jumper removed!
# RST = machine.Pin('GP24')
# CE = machine.Pin('GP12')
# DC = machine.Pin('GP22')
# LIGHT= machine.Pin('GP23')
# PWR = directly from 3V3 pin of the WiPy
try:
import pyb as machine
except:
# WiPy
import machine
import sys
import struct
import time
import font
import chinese
class PCD8544:
ADDRESSING_HORIZ = 0x00
ADDRESSING_VERT= 0x02
INSTR_BASIC = 0x00
INSTR_EXT = 0x01
POWER_UP = 0x00
POWER_DOWN = 0x04
DISPLAY_BLANK = 0x08
DISPLAY_ALL = 0x09
DISPLAY_NORMAL= 0x0c
DISPLAY_INVERSE = 0x0d
TEMP_COEFF_0 = 0x04
TEMP_COEFF_1 = 0x05
TEMP_COEFF_2 = 0x06
TEMP_COEFF_3 = 0x07
BIAS_1_4= 0x17 # 1/4th
BIAS_1_5= 0x16 # 1/5th
BIAS_1_6= 0x15 # 1/6th
BIAS_1_7= 0x14 # 1/7th
BIAS_1_8= 0x13 # 1/8th
BIAS_1_9= 0x12 # 1/9th
BIAS_1_10 = 0x11 # 1/10th
BIAS_1_11 = 0x10 # 1/11th
def __init__(self, spi, rst, ce, dc, light, pwr=None):
self.width= 84
self.height = 48
self.power = self.POWER_DOWN
self.addressing = self.ADDRESSING_HORIZ
self.instr = self.INSTR_BASIC
self.display_mode = self.DISPLAY_BLANK
self.temp_coeff = self.TEMP_COEFF_0
self.bias = self.BIAS_1_11
self.voltage = 3060
# init the SPI bus and pins
spi.init(spi.MASTER, baudrate=328125, bits=8, polarity=0, phase=1, firstbit=spi.MSB)
if "OUT_PP" in dir(rst):
# pyBoard style
rst.init(rst.OUT_PP, rst.PULL_NONE)# Reset line
ce.init(ce.OUT_PP, ce.PULL_NONE) # Chip Enable
dc.init(dc.OUT_PP, dc.PULL_NONE) # Data(1) / Command(0) mode
light.init(light.OUT_PP, light.PULL_NONE)
if pwr:
pwr.init(pwr.OUT_PP, pwr.PULL_NONE)
else:
# WiPy style
rst.init(rst.OUT, None)
ce.init(ce.OUT, None)
dc.init(dc.OUT, None)
light.init(light.OUT, None)
if pwr:
pwr.init(pwr.OUT, None)
self.spi = spi
self.rst = rst
self.ce = ce
self.dc = dc
self.light = light
self.pwr = pwr
self.light_off()
self.power_on()
self.ce.value(1)# set chip to disable (don't listen to input)
self.reset()
self.set_contrast(0xbf)
self.clear()
self.lcd_font = font.FONT6_8()
self.chinese = chinese.CN_UTF8()
def _set_function(self):
""" Write current power/addressing/instructionset values to lcd. """
value = 0x20 | self.power | self.addressing | self.instr
self.command()
def set_power(self, power, set=True):
""" Sets the power mode of the LCD controller """
assert power in , "Power must be POWER_UP or POWER_DOWN."
self.power = power
if set:
self._set_function()
def set_adressing(self, addr, set=True):
""" Sets the adressing mode """
assert addr in , "Addressing must be ADDRESSING_HORIZ or ADDRESSING_VERT."
self.addressing = addr
if set:
self._set_function()
def set_instr(self, instr, set=True):
""" Sets instruction set (basic/extended) """
assert instr in , "Instr must be INSTR_BASIC or INSTR_EXT."
self.instr = instr
if set:
self._set_function()
def set_display(self, display_mode):
""" Sets display mode (blank, black, normal, inverse) """
assert display_mode in , "Mode must be one of DISPLAY_BLANK, DISPLAY_ALL, DISPLAY_NORMAL or DISPLAY_INVERSE."
assert self.instr == self.INSTR_BASIC, "Please switch to basic instruction set first."
self.display_mode = display_mode
self.command()
def set_temp_coeff(self, temp_coeff):
""" Sets temperature coefficient (0-3) """
assert 4 <= temp_coeff < 8, "Temperature coefficient must be one of TEMP_COEFF_0..TEMP_COEFF_3."
assert self.instr == self.INSTR_EXT, "Please switch to extended instruction set first."
self.temp_coeff = temp_coeff
self.command()
def set_bias(self, bias):
""" Sets the LCD bias. """
assert 0x10 <= bias <= 0x17, "Bias must be one of BIAS_1_4..BIAS_1_11."
assert self.instr == self.INSTR_EXT, "Please switch to extended instruction set first."
self.bias = bias
self.command()
def set_voltage(self, millivolts):
""" Sets the voltage of the LCD charge pump in millivolts. """
assert 3060 <= millivolts <= 10680, "Voltage must be between 3,060 and 10,680 mV."
assert self.instr == self.INSTR_EXT, "Please switch to extended instruction set first."
self.voltage = millivolts
basevoltage = millivolts - 3060
incrementor = basevoltage // 60
code = 0x80 & incrementor
self.command()
def set_contrast(self, value):
""" set LCD voltage, i.e. contrast """
assert 0x80 <= value <= 0xff, "contrast value must be between 0x80 and 0xff"
self.command()
# 0x21 - enter extended instruction set (H=1)
# 0x06 - set temperature coefficient 2
# 0x14 - set BIAS system to n=3 (recomm. mux rate 1:40/1:34)
# value - (80-ff) - set Vop (80 = 3.00V, ff = 10.68V), 8b seems to work (0x3b/d70: 3.00+(70*0.06)=7.2V)
# 0x20 - back to basic instruction set
# 0x0c - normal display mode
def position(self, x, y):
""" set cursor to bank y, column x """
assert 0 <= x < self.width, "x must be between 0 and 83"
assert 0 <= y < self.height // 8, "y must be between 0 and 5"
assert self.instr == self.INSTR_BASIC, "Please switch to basic instruction set first."
self.command()
def clear(self):
""" clear screen """
self.position(0, 0)
self.data( * (self.height * self.width // 8))
self.position(0, 0)
def sleep_ms(self, mseconds):
try:
time.sleep_ms(mseconds)
except AttributeError:
machine.delay(mseconds)
def sleep_us(self, useconds):
try:
time.sleep_us(useconds)
except AttributeError:
machine.udelay(useconds)
def power_on(self):
if self.pwr:
self.pwr.value(1)
self.reset()
def reset(self):
""" issue reset impulse to reset the display """
self.rst.value(0)# RST on
self.sleep_us(100) # reset impulse has to be >100 ns and <100 ms
self.rst.value(1)# RST off
# Defaults after reset:
self.power = self.POWER_DOWN
self.addressing = self.ADDRESSING_HORIZ
self.instr = self.INSTR_BASIC
self.display_mode = self.DISPLAY_BLANK
self.temp_coeff = self.TEMP_COEFF_0
self.bias = self.BIAS_1_11
self.voltage = 3060
def power_off(self):
self.clear()
self.command()
# 0x20 - basic instruction set
# 0x08 - set display to blank (doesn't delete contents)
self.sleep_ms(10)
if self.pwr:
self.pwr.value(0) # turn off power
def command(self, arr):
""" send bytes in command mode """
self.bitmap(arr, 0)
def data(self, arr):
""" send bytes in data mode """
self.bitmap(arr, 1)
def bitmap(self, arr, dc):
self.dc.value(dc)
buf = struct.pack('B'*len(arr), *arr)
self.ce.value(0) # set chip to listening/enable
try:
self.spi.send(buf)
except AttributeError:
self.spi.write(buf)
self.ce.value(1) # set chip to disable
def light_on(self):
self.light.value(0)# pull to GND
def light_off(self):
self.light.value(1)# set to HIGH
def lcd_write_string(self, string, x, y):
self.position(x,y)
for i in string:
self.data(self.lcd_font.get_font6_8(i))
def lcd_write_chineses(str,x,y,space = 9):
# i,j=0,0
# lsLen = len(str)
# while (j<lsLen)
# self.lcd_write_chinese(str,x+(i*space),y)
# i+=1
# j+=1
return 0
def lcd_write_chinese(self,data,x,y):
#获取 字 的UTF8码
code = 0x00 #赋初值
data_code = data.encode("UTF-8")
code |= data_code<<16
code |= data_code<<8
code |= data_code
#获取 字 的UTF8码 END
self.position(x,y)
self.data(self.chinese.get_chinese_utf8(code,0))
self.position(x,y+1)
self.data(self.chinese.get_chinese_utf8(code,1))
#boot.py
//转载请注明：@小五义http://www.cnblogs.com/xiaowuyiQQ群：64770604
# boot.py -- run on boot-up
# can run arbitrary Python, but best to keep it minimal
import machine
import pyb
#pyb.main('main.py') # main script to run after this one
#pyb.usb_mode('CDC+MSC') # act as a serial and a storage device
#pyb.usb_mode('CDC+HID') # act as a serial device and a mouse
#main.py
# main.py -- put your code here!
import pyb
import upcd8544
from machine import SPI,Pin
def main():
lcd_5110.lcd_write_chinese('萝',14,0)
lcd_5110.lcd_write_chinese('卜',30,0)
lcd_5110.lcd_write_chinese('智',46,0)
lcd_5110.lcd_write_chinese('能',62,0)
pyb.delay(1000)
if __name__ == '__main__':
SPI = pyb.SPI(1) #DIN=>X8-MOSI/CLK=>X6-SCK
RST = pyb.Pin('X1')
CE = pyb.Pin('X2')
DC = pyb.Pin('X3')
LIGHT= pyb.Pin('X4')
lcd_5110 = upcd8544.PCD8544(SPI, RST, CE, DC, LIGHT)
while(1):
main()
实现效果如图：
以上提到的程序原代码及工具下载地址：https://pan.baidu.com/s/1eRZZd1C 楼主辛苦谢谢分享！
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