本文档详细介绍了如何使用HaaS506开发板驱动128x160分辨率的TFT LCD屏，包括初始化、画点、画线、画圆、显示字符串和BMP图片等功能，并提供了完整的Python代码示例。同时，文章提到了屏幕显示中文字符和特定尺寸英文字符的问题及解决方案。
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1.介绍
本节实现了128*160TFT(驱动ST7735S)屏幕点亮、画点、画线、画圆、显示字符串、显示BMP图片功能。
注意在文件夹中加入图片。
接线
模块引脚
当前案例为了接线方便，将DC、RST接到了haas506开发板的i2c接口的LPG（GPIO3)、SDA(GPIO20)引脚上。
| pin | note |
|---|---|
| GND | 电压地 |
| VDD | 电压正3.3V |
| SCL | SPI时钟线（与haas506的SPI_CLK相接） |
| SDA | SPI数据线（与haas506的SPI_MOSI相接) |
| RST | 复位引脚(GPIO20) |
| DC | 数据/命令引脚(GPIO3) |
| CS | SPI片选（与haas506的SPI_CS相接） |
| BLK | 背光控制开关，可不接 |
-
模块实物图1
-
模块实物图2
2.测试代码
- main.py
from st7735s import ST7735S
import utime as time
tft=ST7735S()
tft.tft_begin()
#画空心圆
tft.tft_drawCircle(64,64,40,0xffff,0)
tft.tft_drawCircle(64,64,30,0xffff,0)
tft.tft_drawCircle(64,64,20,0xffff,0)
time.sleep(2)
#清屏
tft.tft_clear()
#画实心圆
tft.tft_drawCircle(64,64,20,0xffff,1)
time.sleep(2)
tft.tft_clear()
#画三角形
tft.tft_drawTriangel(0,0,100,64,120,32,0xf800)
time.sleep(2)
tft.tft_clear()
#画像素点/画线
tft.tft_drawPoint(32,32,0xf800)
tft.tft_drawPoint(64,32,0xf800)
tft.tft_drawPoint(64,64,0xf800)
tft.tft_drawPoint(32,64,0xf800)
time.sleep(2)
tft.tft_clear()
tft.tft_drawLine(32,32,100,32,0xf800)
tft.tft_drawLine(64,64,120,120,0xf800)
time.sleep(2)
tft.tft_clear()
#显示BMP图片,当前图片存放在项目文件夹内
tft.tft_showBmp('/data/pyamp/test128x160.bmp')
time.sleep(2)
tft.tft_clear()
tft.tft_showBmp('/data/pyamp/flower64x48.bmp')
time.sleep(2)
tft.tft_clear()
#显示字符(6*8字体大小)
tft.tft_showString(0,0,"haas506",0xf800)
tft.tft_showString(0,32,"hello world",0xffff)
tft.tft_showString(0,64,"123456789",0X07FF)
time.sleep(2)
tft.tft_clear()
#显示中文字符 (16*16字体大小)
tft.tft_showCHN(0,0,1,0xffff,0)
tft.tft_showCHN(0,16,2,0xffff,0)
tft.tft_showCHN(0,32,3,0xffff,0)
tft.tft_showCHN(0,48,4,0xffff,0)
tft.tft_showCHN(0,64,5,0xffff,0)
time.sleep(2)
tft.tft_clear()
#显示中文字符 (24*24字体大小)
tft.tft_showCHN(0,0,1,0xffff,1)
tft.tft_showCHN(0,24,2,0xffff,1)
tft.tft_showCHN(0,48,3,0xffff,1)
tft.tft_showCHN(0,72,4,0xffff,1)
tft.tft_showCHN(0,96,5,0xffff,1)
time.sleep(2)
tft.tft_clear()
#显示自定义字符 (8*16字体大小)
tft.tft_showCHN(0,0,7,0xffff,2)
- st7735s.py
from driver import SPI
from driver import GPIO
import utime as time
from font import terminalfont,F16_16,F24_24,F8_16
USE_HORIZONTAL=1 #设置横屏或者竖屏显示 0或1为竖屏 2或3为横屏
# Constants for interacting with display registers.
ST7735_TFTWIDTH = 128
ST7735_TFTHEIGHT = 160
ST7735_NOP = 0x00
ST7735_SWRESET = 0x01
ST7735_RDDID = 0x04
ST7735_RDDST = 0x09
ST7735_SLPIN = 0x10
ST7735_SLPOUT = 0x11
ST7735_PTLON = 0x12
ST7735_NORON = 0x13
# ILI9341_RDMODE = 0x0A
# ILI9341_RDMADCTL = 0x0B
# ILI9341_RDPIXFMT = 0x0C
# ILI9341_RDIMGFMT = 0x0A
# ILI9341_RDSELFDIAG = 0x0F
ST7735_INVOFF = 0x20
ST7735_INVON = 0x21
# ILI9341_GAMMASET = 0x26
ST7735_DISPOFF = 0x28
ST7735_DISPON = 0x29
ST7735_CASET = 0x2A
ST7735_RASET = 0x2B
ST7735_RAMWR = 0x2C
ST7735_RAMRD = 0x2E
ST7735_PTLAR = 0x30
ST7735_MADCTL = 0x36
# ST7735_PIXFMT = 0x3A
ST7735_COLMOD = 0x3A
ST7735_FRMCTR1 = 0xB1
ST7735_FRMCTR2 = 0xB2
ST7735_FRMCTR3 = 0xB3
ST7735_INVCTR = 0xB4
# ILI9341_DFUNCTR = 0xB6
ST7735_DISSET5 = 0xB6
ST7735_PWCTR1 = 0xC0
ST7735_PWCTR2 = 0xC1
ST7735_PWCTR3 = 0xC2
ST7735_PWCTR4 = 0xC3
ST7735_PWCTR5 = 0xC4
ST7735_VMCTR1 = 0xC5
# ILI9341_VMCTR2 = 0xC7
ST7735_RDID1 = 0xDA
ST7735_RDID2 = 0xDB
ST7735_RDID3 = 0xDC
ST7735_RDID4 = 0xDD
ST7735_GMCTRP1 = 0xE0
ST7735_GMCTRN1 = 0xE1
ST7735_PWCTR6 = 0xFC
# Colours for convenience
ST7735_BLACK = 0x0000 # 0b 00000 000000 00000 黑色
ST7735_BLUE = 0x001F # 0b 00000 000000 11111 蓝色
ST7735_GREEN = 0x07E0 # 0b 00000 111111 00000 绿色
ST7735_RED = 0xF800 # 0b 11111 000000 00000 红色
ST7735_CYAN = 0x07FF # 0b 00000 111111 11111 橘黄
ST7735_MAGENTA = 0xF81F # 0b 11111 000000 11111 紫红色
ST7735_YELLOW = 0xFFE0 # 0b 11111 111111 00000 黄色
ST7735_WHITE = 0xFFFF # 0b 11111 111111 11111
ST7735_CYAN =0x7FFF
ST7735_BROWN =0XBC40 #棕色
ST7735_BRRED =0XFC07 #棕红色
ST7735_GRAY =0X8430 #灰色
ST7735_DARKBLUE =0X01CF #深蓝色
ST7735_LIGHTBLUE =0X7D7C #浅蓝色
ST7735_GRAYBLUE =0X5458 #灰蓝色
ST7735_LIGHTGREEN =0X841F #浅绿色
ST7735_LGRAY =0XC618 #浅灰色(PANNEL),窗体背景色
ST7735_LGRAYBLUE =0XA651 #浅灰蓝色(中间层颜色)
ST7735_LBBLUE =0X2B12 #浅棕蓝色(选择条目的反色)
class ST7735S(object):
# --------------------------------------------------------------
# Prototype : __init__(width=ST7735_TFTWIDTH,height=ST7735_TFTHEIGHT)
# Parameters : width，height为屏幕的大小，如128*160
# Description : 初始化spi，cs,rst,dc引脚
# --------------------------------------------------------------
def __init__(self,width=ST7735_TFTWIDTH,height=ST7735_TFTHEIGHT):
self.width = width
self.height = height
#creat spi-instance,cs-instance,rst,dc
#open spi,cs,rst,dc
self._spi=SPI()
self._spi.open('ST7735S')
self.cs=GPIO()
self.cs.open('cs')
self._rst=GPIO()
self._rst.open('rst')
self._dc=GPIO()
self._dc.open('dc')
# --------------------------------------------------------------
# Prototype : _initialize()
# Parameters : 无
# Description : 初始化
# --------------------------------------------------------------
def _initialize(self):
self.writeCmd(ST7735_SWRESET) # Software reset
time.sleep_ms(150) # delay 150 ms
self.writeCmd(ST7735_SLPOUT) #Out of sleep mode
time.sleep_ms(120)
#------------------------------------ST7735S Frame Rate-----------------------------------------#
self.writeCmd(ST7735_FRMCTR1)
self.writeDat(0x05)
self.writeDat(0x3C)
self.writeDat(0x3C)
self.writeCmd(ST7735_FRMCTR2)
self.writeDat(0x05)
self.writeDat(0x3C)
self.writeDat(0x3C)
self.writeCmd(ST7735_FRMCTR3)
self.writeDat(0x05)
self.writeDat(0x3C)
self.writeDat(0x3C)
self.writeDat(0x05)
self.writeDat(0x3C)
self.writeDat(0x3C)
#------------------------------------End ST7735S Frame Rate---------------------------------#
self.writeCmd(ST7735_INVCTR) #Display inversion ctrl
# self.writeDat(0x03) # option1
self.writeDat(0x07) # option2
#------------------------------------ST7735S Power Sequence---------------------------------#
self.writeCmd(ST7735_PWCTR1)
self.writeDat(0x28)
self.writeDat(0x08)
self.writeDat(0x04)
self.writeCmd(ST7735_PWCTR2)
self.writeDat(0XC0)
self.writeCmd(ST7735_PWCTR3)
self.writeDat(0x0D)
self.writeDat(0x00)
self.writeCmd(ST7735_PWCTR4)
self.writeDat(0x8D)
self.writeDat(0x2A)
self.writeCmd(ST7735_PWCTR5)
self.writeDat(0x8D)
self.writeDat(0xEE)
#---------------------------------End ST7735S Power Sequence-------------------------------------#
self.writeCmd(ST7735_VMCTR1) #VCOM
self.writeDat(0x1A)
self.writeCmd(ST7735_MADCTL) #MX, MY, RGB mode
if USE_HORIZONTAL==0:
self.writeDat(0x00)
elif USE_HORIZONTAL==1:
self.writeDat(0xC0)
elif USE_HORIZONTAL==2:
self.writeDat(0x70)
else:
self.writeDat(0xA0)
# if USE_HORIZONTAL==0:
# self.writeDat(0xC8)
# elif USE_HORIZONTAL==1:
# self.writeDat(0x08)
# elif USE_HORIZONTAL==2:
# self.writeDat(0x78)
# else:
# self.writeDat(0xA8)
#------------------------------------ST7735S Gamma Sequence---------------------------------#
self.writeCmd(ST7735_GMCTRP1)
self.writeDat(0x04)
self.writeDat(0x22)
self.writeDat(0x07)
self.writeDat(0x0A)
self.writeDat(0x2E)
self.writeDat(0x30)
self.writeDat(0x25)
self.writeDat(0x2A)
self.writeDat(0x28)
self.writeDat(0x26)
self.writeDat(0x2E)
self.writeDat(0x3A)
self.writeDat(0x00)
self.writeDat(0x01)
self.writeDat(0x03)
self.writeDat(0x13)
self.writeCmd(ST7735_GMCTRN1)
self.writeDat(0x04)
self.writeDat(0x16)
self.writeDat(0x06)
self.writeDat(0x0D)
self.writeDat(0x2D)
self.writeDat(0x26)
self.writeDat(0x23)
self.writeDat(0x27)
self.writeDat(0x27)
self.writeDat(0x25)
self.writeDat(0x2D)
self.writeDat(0x3B)
self.writeDat(0x00)
self.writeDat(0x01)
self.writeDat(0x04)
self.writeDat(0x13)
##------------------------------------End ST7735S Gamma Sequence-----------------------------#
self.writeCmd(ST7735_COLMOD) #65k mode set color mode
self.writeDat(0x05)
self.writeCmd(ST7735_DISPON) #Display on
#
#black
time.sleep_ms(200)
self.tft_fill(0,0,128,160,0x0000)
# Initialize the display. Broken out as a separate function so it can
# be overridden by other displays in the future.
# self.writeCmd(ST7735_SWRESET) # Software reset
# time.sleep_ms(150) # delay 150 ms
# self.writeCmd(ST7735_SLPOUT) # Out of sleep mode
# time.sleep_ms(500) # delay 500 ms
# self.writeCmd(ST7735_FRMCTR1) # Frame rate ctrl - normal mode
# self.writeDat(0x01) # Rate = fosc/(1x2+40) * (LINE+2C+2D)
# self.writeDat(0x2C)
# self.writeDat(0x2D)
# self.writeCmd(ST7735_FRMCTR2) # Frame rate ctrl - idle mode
# self.writeDat(0x01) # Rate = fosc/(1x2+40) * (LINE+2C+2D)
# self.writeDat(0x2C)
# self.writeDat(0x2D)
# self.writeCmd(ST7735_FRMCTR3) # Frame rate ctrl - partial mode
# self.writeDat(0x01) # Dot inversion mode
# self.writeDat(0x2C)
# self.writeDat(0x2D)
# self.writeDat(0x01) # Line inversion mode
# self.writeDat(0x2C)
# self.writeDat(0x2D)
# self.writeCmd(ST7735_INVCTR) # Display inversion ctrl
# self.writeDat(0x07) # No inversion
# self.writeCmd(ST7735_PWCTR1) # Power control
# self.writeDat(0xA2)
# self.writeDat(0x02) # -4.6V
# self.writeDat(0x84) # auto mode
# self.writeCmd(ST7735_PWCTR2) # Power control
# self.writeDat(0x0A) # Opamp current small
# self.writeDat(0x00) # Boost frequency
# self.writeCmd(ST7735_PWCTR4) # Power control
# self.writeDat(0x8A) # BCLK/2, Opamp current small & Medium low
# self.writeDat(0x2A)
# self.writeCmd(ST7735_PWCTR5) # Power control
# self.writeDat(0x8A)
# self.writeDat(0xEE)
# self.writeCmd(ST7735_VMCTR1) # Power control
# self.writeDat(0x0E)
# self.writeCmd(ST7735_INVOFF) # Don't invert display
# self.writeCmd(ST7735_MADCTL) # Memory access control (directions)
# self.writeDat(0xC8) # row addr/col addr, bottom to top refresh
# self.writeCmd(ST7735_COLMOD) # set color mode
# self.writeDat(0x05) # 16-bit color
# self.writeCmd(ST7735_CASET) # Column addr set
# self.writeDat(0x00) # XSTART = 0
# self.writeDat(0x00)
# self.writeDat(0x00) # XEND = 127
# self.writeDat(0x7F)
# self.writeCmd(ST7735_RASET) # Row addr set
# self.writeDat(0x00) # XSTART = 0
# self.writeDat(0x00)
# self.writeDat(0x00) # XEND = 159
# self.writeDat(0x9F)
# #
# self.writeCmd(ST7735_GMCTRP1) # Set Gamma
# self.writeDat(0x02)
# self.writeDat(0x1c)
# self.writeDat(0x07)
# self.writeDat(0x12)
# self.writeDat(0x37)
# self.writeDat(0x32)
# self.writeDat(0x29)
# self.writeDat(0x2d)
# self.writeDat(0x29)
# self.writeDat(0x25)
# self.writeDat(0x2B)
# self.writeDat(0x39)
# self.writeDat(0x00)
# self.writeDat(0x01)
# self.writeDat(0x03)
# self.writeDat(0x10)
# self.writeCmd(ST7735_GMCTRN1) # Set Gamma
# self.writeDat(0x03)
# self.writeDat(0x1d)
# self.writeDat(0x07)
# self.writeDat(0x06)
# self.writeDat(0x2E)
# self.writeDat(0x2C)
# self.writeDat(0x29)
# self.writeDat(0x2D)
# self.writeDat(0x2E)
# self.writeDat(0x2E)
# self.writeDat(0x37)
# self.writeDat(0x3F)
# self.writeDat(0x00)
# self.writeDat(0x00)
# self.writeDat(0x02)
# self.writeDat(0x10)
# self.writeCmd(ST7735_NORON) # Normal display on
# time.sleep_ms(10) # 10 ms
# self.writeCmd(ST7735_DISPON) # Display on
# time.sleep_ms(100) # 100 ms
# # self.tft_fill(0,0,128,160,0x00)
# --------------------------------------------------------------
# Prototype : writeCmd(command)
# Parameters : command
# Description : 写命令
# --------------------------------------------------------------
def writeCmd(self, command):
"""Send command byte to display."""
#spi write.
#DC = 0 :write command
self._dc.write(0)
writeBuf=bytearray(1)
self.cs.write(0)
writeBuf[0]=command
self._spi.write(writeBuf)
self.cs.write(1)
# --------------------------------------------------------------
# Prototype : writeDat(data)
# Parameters : data
# Description : 写8bits数据
# --------------------------------------------------------------
def writeDat(self, data):
"""Send byte of data(8bits) to display."""
# spi write.
#DC = 1:write data
self._dc.write(1)
writeBuf=bytearray(1)
self.cs.write(0)
writeBuf[0]=data
self._spi.write(writeBuf)
self.cs.write(1)
# --------------------------------------------------------------
# Prototype : writeDat_16(data)
# Parameters : data
# Description : 写16bits数据，例如显示颜色
# --------------------------------------------------------------
def writeDat_16(self, data):
"""Send byte of data(16bits) to display."""
# spi write.
#DC = 1:write data
self._dc.write(1)
writeBuf=bytearray(2)
self.cs.write(0)
writeBuf[0]=data>>8
writeBuf[1]=data
self._spi.write(writeBuf)
self.cs.write(1)
# --------------------------------------------------------------
# Prototype : reset()
# Parameters : 无
# Description : 重启显示屏，如果reset引脚已连接
# --------------------------------------------------------------
def reset(self):
if self._rst is not None:
self._rst.write(1)
time.sleep_ms(500)
self._rst.write(0)
time.sleep_ms(500)
self._rst.write(1)
time.sleep_ms(500)
# --------------------------------------------------------------
# Prototype : tft_off()
# Parameters : 无
# Description : 关闭后，只亮白光
# --------------------------------------------------------------
def tft_off(self):
self.writeCmd(ST7735_DISPOFF)
# --------------------------------------------------------------
# Prototype : tft_on()
# Parameters : 无
# Description : 打开屏幕显示，默认背景颜色为黑色
# --------------------------------------------------------------
def tft_on(self):
self.writeCmd(ST7735_DISPON)
# --------------------------------------------------------------
# Prototype : tft_begin()
# Parameters : 无
# Description : 屏幕初始化
# --------------------------------------------------------------
def tft_begin(self):
self.reset()
self._initialize()
# --------------------------------------------------------------
# Prototype : tft_setPos(x0, y0, x1, y1)
# Parameters : x0,x1 设置x轴的起始和结束地址
# y0,y1 设置y轴的起始和结束地址
# Description : 设置起始和结束坐标
# --------------------------------------------------------------
def tft_setPos(self, x0, y0, x1, y1):
"""Set the pixel address window for proceeding drawing commands. x0 and
x1 should the minimum and maximum x pixel bounds. y0 and y1
should the minimum and maximum y pixel bound. If no parameters
are specified the default will be to update the entire display from 0,0
to width-1,height-1.
"""
# self.writeCmd(ST7735_CASET);#//列地址设置
# self.writeDat(x0+2)
# self.writeDat(x1+2)
# self.writeCmd(ST7735_RASET)#//行地址设置
# self.writeDat(y0+1)
# self.writeDat(y1+1)
# self.writeCmd(ST7735_RAMWR) #//储存器写
self.writeCmd(ST7735_CASET)
self.writeDat(x0>>8)
self.writeDat(x0) # XSTART
self.writeDat(x1>>8)
self.writeDat(x1) # XEND
self.writeCmd(ST7735_RASET) # Row addr set
self.writeDat(y0>>8)
self.writeDat(y0) # YSTART
self.writeDat(y1>>8)
self.writeDat(y1) # XEND
self.writeCmd(ST7735_RAMWR) # write to RAM
# --------------------------------------------------------------
# Prototype : tft_clear()
# Parameters : 无
# Description : 清屏，全黑
# --------------------------------------------------------------
def tft_clear(self):
self.tft_fill(0,0,128,160,ST7735_BLACK)
# --------------------------------------------------------------
# Prototype : tft_fill(x0,y0,x1,y1,color)
# Parameters : x0,y0 起始坐标
# x1,y1 终止坐标
# color 要填充的颜色
# Description : 填充指定块区域
# --------------------------------------------------------------
def tft_fill(self,x0,y0,x1,y1,color):
self.tft_setPos(x0,y0,x1-1,y1-1)
for i in range(y0,y1):
for j in range(x0,x1):
self.writeDat_16(color)
# --------------------------------------------------------------
# Prototype : tft_drawPoint(x,y,color)
# Parameters : x,y为所画的点的坐标，color为点的颜色
# Description : x取值范围(0,128),y取值范围(0,160)
# --------------------------------------------------------------
def tft_drawPoint(self,x,y,color):
self.tft_setPos(x,y,x,y)
self.writeDat_16(color)
# --------------------------------------------------------------
# Prototype : tft_drawLine(x0,y0,x1,y1,color)
# Parameters : (x0,y0)是所画线的起始坐标,(x1,y1)是所画线的终点坐标,color为线的颜色
# Description : x0，x1的取值范围为(0,128),y0，y1的取值范围为(0,160)
# --------------------------------------------------------------
def tft_drawLine(self,x0,y0,x1,y1,color):
xerr,yerr=0,0
delta_x,delta_y,distance=0,0,0
uRow=x0
uCol=y0
delta_x=x1-x0 #计算坐标增量
delta_y=y1-y0
if delta_x>0:
incx=1 #设置单步方向
elif delta_x==0:
incx=0 #垂直线
else:
incx=-1
delta_x=-delta_x
if delta_y>0:
incy=1
elif delta_y==0:
incy=0 #水平线
else:
incy=-1
delta_y=-delta_y
if delta_x>delta_y:
distance=delta_x #选取基本增量坐标轴
else:
distance=delta_y
for i in range(distance+2): #画线输出
self.tft_drawPoint(uRow,uCol,color) #画点
xerr+=delta_x
yerr+=delta_y
if xerr>distance:
xerr-=distance
uRow+=incx
if yerr>distance:
yerr-=distance
uCol+=incy
# --------------------------------------------------------------
# Prototype : tft_draw_circle_8(xc,yc,x,y,color)
# Description : 画出圆的外切矩形的四个点
# --------------------------------------------------------------
def tft_draw_circle_8(self,xc,yc,x,y,color):
self.tft_drawPoint(xc+x,yc+y,color)
self.tft_drawPoint(xc-x,yc+y,color)
self.tft_drawPoint(xc+x,yc-y,color)
self.tft_drawPoint(xc-x,yc-y,color)
self.tft_drawPoint(xc+y,yc+x,color)
self.tft_drawPoint(xc-y,yc+x,color)
self.tft_drawPoint(xc+y,yc-x,color)
self.tft_drawPoint(xc-y,yc-x,color)
# --------------------------------------------------------------
# Prototype : tft_drawCircle(xc,yc,r,color,mode)
# Parameters : xc,yc为圆的圆心坐标
# r为园的半径
# color为圆的颜色
# mode是圆的模式选择，0-空心圆，1-实心圆
# Description : 以指定坐标，半径画圆
# --------------------------------------------------------------
def tft_drawCircle(self,xc,yc,r,color,mode):
x=0
y=r
d=3-2*r
if mode:
#画实心圆
while x<=y:
for yi in range(x,y+1):
self.tft_draw_circle_8(xc,yc,x,yi,color)
if d<0:
d=d+4*x+6
else:
d=d+4*(x-y)+10
y-=1
x+=1
else:
#画空心圆
while x<=y:
self.tft_draw_circle_8(xc,yc,x,y,color)
if d<0:
d=d+4*x+6
else:
d=d+4*(x-y)+10
y-=1
x+=1
# --------------------------------------------------------------
# Prototype : tft_drawTriangel(x0,y0,x1,y1,x2,y2,color)
# Parameters : x0,y0为三角形的一个坐标
# x1,y1为三角形的一个坐标
# x2,y2为三角形的一个坐标
# color为三角形的颜色
# Description : 指定3个坐标 画三角形
# --------------------------------------------------------------
def tft_drawTriangel(self,x0,y0,x1,y1,x2,y2,color):
self.tft_drawLine(x0,y0,x1,y1,color)
self.tft_drawLine(x1,y1,x2,y2,color)
self.tft_drawLine(x2,y2,x0,y0,color)
# --------------------------------------------------------------
# Prototype : tft_showSignleChar(x, y, char,color, sizex=1, sizey=1)
# Parameters : x,y--为单个字符起始坐标
# char--为单个字符内容
# color--单个字符的颜色
# Description : 指定起始位置，显示单个字符，当前字体大小为 6*8(width*height)
# --------------------------------------------------------------
def tft_showSingleChar(self, x, y, char,color, sizex=1, sizey=1):
startchar = terminalfont['start']
endchar = terminalfont['end']
ci = ord(char)
print("ci=",ci)
if (startchar <= ci <= endchar):
width = terminalfont['width']
height = terminalfont['height']
ci = (ci - startchar) * width
ch = terminalfont['data'][ci:ci + width]
px = x
if (sizex <= 1 and sizey <= 1):
for c in ch:
py = y
for _ in range(height):
if c & 0x01:
self.tft_drawPoint(px, py, color)
py += 1
c >>= 1
px += 1
# --------------------------------------------------------------
# Prototype : tft_showString(x,y,string,color,size=1)
# Parameters : x,y--为字符串起始坐标
# string--为字符串的内容
# color--字符串的颜色
# Description : 指定起始位置，显示字符串，当前字体大小为 6*8
# --------------------------------------------------------------
def tft_showString(self,x,y,string,color,size=1):
width=size*terminalfont['width']-1
px=x
for c in string:
self.tft_showSingleChar(px,y,c,color,1,1)
px+=width
if px+width>self.width:
y+=terminalfont['height']*size+1
px=x
# --------------------------------------------------------------
# Prototype : tft_showSingleCN(x,y,cn,color,mode)
# Parameters : x,y为中文/特定英文字符显示的起始坐标，
# cn为tft_showSingleCN(x,y,cn,color,mode)传入的cn
# color为中文颜色
# mode=0显示16*16中文字体大小，mode=1显示24*24中文字体大小,mode=2显示8*16英文字符
# Description : 显示单个中文字符/特的字体大小的英文字符 ，需要与tft_showSingleCN()配合使用
# --------------------------------------------------------------
def tft_showSingleCN(self,x,y,cn,color,mode):
if mode==0:
px = x
ch=cn[:32]
for c in ch:
py=y
for _ in range(8):
if c & 0x01:
self.tft_drawPoint(px, py, color)
py += 1
c >>= 1
px += 1
if px==(16+x) :
px=0+x
y=8+y
continue
if mode==1:
px = x
ch=cn[:72]
for c in ch:
py=y
for _ in range(8):
if c & 0x01:
self.tft_drawPoint(px, py, color)
py += 1
c >>= 1
px += 1
if px==(24+x) :
px=0+x
y=8+y
continue
if mode==2:
px = x
ch=cn[:16]
for c in ch:
py=y
for _ in range(8):
if c & 0x01:
self.tft_drawPoint(px, py, color)
py += 1
c >>= 1
px += 1
if px==(8+x) :
px=0+x
y=8+y
continue
# --------------------------------------------------------------
# Prototype : tft_showCHN(x,y,n,color,mode)
# Parameters : x,y为中文/特定英文字符显示的起始坐标，
# n为要显示汉字的个数，个数不能超过字库中的汉字个数
# color为中文颜色
# mode=0显示16*16中文字体大小，mode=1显示24*24中文字体大小，mode=2显示8*16英文字符
# Description : 显示中文字符/特定字体大小的英文字符
# --------------------------------------------------------------
def tft_showCHN(self,x,y,n,color,mode):
#显示n个汉字/字符串
for i in range(n):
if mode==0:
cn=F16_16[i*32:(i+1)*32]
self.tft_showSingleCN(x,y,cn,color,mode)
x+=16
if mode==1:
cn=F24_24[i*72:(i+1)*72]
self.tft_showSingleCN(x,y,cn,color,mode)
x+=24
if mode==2:
cn=F8_16[i*16:(i+1)*16]
self.tft_showSingleCN(x,y,cn,color,mode)
x+=8
# --------------------------------------------------------------
# Prototype : TFTColor(aR, aG, aB)
# Parameters : aR, aG, aB,
# Description : rgb转换
# --------------------------------------------------------------
def TFTColor(self,aR, aG, aB ) :
'''Create a 16 bit rgb value from the given R,G,B from 0-255.
This assumes rgb 565 layout and will be incorrect for bgr.'''
return ((aR & 0xF8) << 8) | ((aG & 0xFC) << 3) | (aB >> 3)
# --------------------------------------------------------------
# Prototype : tft_showBmp(path)
# Parameters : path-图片存放的位置
# Description : 显示BMP图片
# --------------------------------------------------------------
def tft_showBmp(self,path):
f=open(path,'rb')
if f.read(2) == b'BM': #header
dummy = f.read(8) #file size(4), creator bytes(4)
offset = int.from_bytes(f.read(4), 'little')
hdrsize = int.from_bytes(f.read(4), 'little')
width = int.from_bytes(f.read(4), 'little')
height = int.from_bytes(f.read(4), 'little')
if int.from_bytes(f.read(2), 'little') == 1: #planes must be 1
depth = int.from_bytes(f.read(2), 'little')
if depth == 24 and int.from_bytes(f.read(4), 'little') == 0:#compress method == uncompressed
print("Image size:", width, "x", height)
rowsize = (width * 3 + 3) & ~3
if height < 0:
height = -height
flip = False
else:
flip = True
w, h = width, height
if w > 128: w = 128
if h > 160: h = 160
self.tft_setPos(0,0,w - 1,h - 1)
for row in range(h):
if flip:
pos = offset + (height - 1 - row) * rowsize
else:
pos = offset + row * rowsize
if f.tell() != pos:
dummy = f.seek(pos)
for col in range(w):
bgr = f.read(3)
self.writeDat_16(self.TFTColor(bgr[2],bgr[1],bgr[0]))
- font.py
#6*8
terminalfont = {
"width": 6,
"height": 8,
"start": 32,
"end": 127,
"data": bytearray([
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x06, 0x5F, 0x06, 0x00,
0x00, 0x07, 0x03, 0x00, 0x07, 0x03,
0x00, 0x24, 0x7E, 0x24, 0x7E, 0x24,
0x00, 0x24, 0x2B, 0x6A, 0x12, 0x00,
0x00, 0x63, 0x13, 0x08, 0x64, 0x63,
0x00, 0x36, 0x49, 0x56, 0x20, 0x50,
0x00, 0x00, 0x07, 0x03, 0x00, 0x00,
0x00, 0x00, 0x3E, 0x41, 0x00, 0x00,
0x00, 0x00, 0x41, 0x3E, 0x00, 0x00,
0x00, 0x08, 0x3E, 0x1C, 0x3E, 0x08,
0x00, 0x08, 0x08, 0x3E, 0x08, 0x08,
0x00, 0x00, 0xE0, 0x60, 0x00, 0x00,
0x00, 0x08, 0x08, 0x08, 0x08, 0x08,
0x00, 0x00, 0x60, 0x60, 0x00, 0x00,
0x00, 0x20, 0x10, 0x08, 0x04, 0x02,
0x00, 0x3E, 0x51, 0x49, 0x45, 0x3E,
0x00, 0x00, 0x42, 0x7F, 0x40, 0x00,
0x00, 0x62, 0x51, 0x49, 0x49, 0x46,
0x00, 0x22, 0x49, 0x49, 0x49, 0x36,
0x00, 0x18, 0x14, 0x12, 0x7F, 0x10,
0x00, 0x2F, 0x49, 0x49, 0x49, 0x31,
0x00, 0x3C, 0x4A, 0x49, 0x49, 0x30,
0x00, 0x01, 0x71, 0x09, 0x05, 0x03,
0x00, 0x36, 0x49, 0x49, 0x49, 0x36,
0x00, 0x06, 0x49, 0x49, 0x29, 0x1E,
0x00, 0x00, 0x6C, 0x6C, 0x00, 0x00,
0x00, 0x00, 0xEC, 0x6C, 0x00, 0x00,
0x00, 0x08, 0x14, 0x22, 0x41, 0x00,
0x00, 0x24, 0x24, 0x24, 0x24, 0x24,
0x00, 0x00, 0x41, 0x22, 0x14, 0x08,
0x00, 0x02, 0x01, 0x59, 0x09, 0x06,
0x00, 0x3E, 0x41, 0x5D, 0x55, 0x1E,
0x00, 0x7E, 0x11, 0x11, 0x11, 0x7E,
0x00, 0x7F, 0x49, 0x49, 0x49, 0x36,
0x00, 0x3E, 0x41, 0x41, 0x41, 0x22,
0x00, 0x7F, 0x41, 0x41, 0x41, 0x3E,
0x00, 0x7F, 0x49, 0x49, 0x49, 0x41,
0x00, 0x7F, 0x09, 0x09, 0x09, 0x01,
0x00, 0x3E, 0x41, 0x49, 0x49, 0x7A,
0x00, 0x7F, 0x08, 0x08, 0x08, 0x7F,
0x00, 0x00, 0x41, 0x7F, 0x41, 0x00,
0x00, 0x30, 0x40, 0x40, 0x40, 0x3F,
0x00, 0x7F, 0x08, 0x14, 0x22, 0x41,
0x00, 0x7F, 0x40, 0x40, 0x40, 0x40,
0x00, 0x7F, 0x02, 0x04, 0x02, 0x7F,
0x00, 0x7F, 0x02, 0x04, 0x08, 0x7F,
0x00, 0x3E, 0x41, 0x41, 0x41, 0x3E,
0x00, 0x7F, 0x09, 0x09, 0x09, 0x06,
0x00, 0x3E, 0x41, 0x51, 0x21, 0x5E,
0x00, 0x7F, 0x09, 0x09, 0x19, 0x66,
0x00, 0x26, 0x49, 0x49, 0x49, 0x32,
0x00, 0x01, 0x01, 0x7F, 0x01, 0x01,
0x00, 0x3F, 0x40, 0x40, 0x40, 0x3F,
0x00, 0x1F, 0x20, 0x40, 0x20, 0x1F,
0x00, 0x3F, 0x40, 0x3C, 0x40, 0x3F,
0x00, 0x63, 0x14, 0x08, 0x14, 0x63,
0x00, 0x07, 0x08, 0x70, 0x08, 0x07,
0x00, 0x71, 0x49, 0x45, 0x43, 0x00,
0x00, 0x00, 0x7F, 0x41, 0x41, 0x00,
0x00, 0x02, 0x04, 0x08, 0x10, 0x20,
0x00, 0x00, 0x41, 0x41, 0x7F, 0x00,
0x00, 0x04, 0x02, 0x01, 0x02, 0x04,
0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
0x00, 0x00, 0x03, 0x07, 0x00, 0x00,
0x00, 0x20, 0x54, 0x54, 0x54, 0x78,
0x00, 0x7F, 0x44, 0x44, 0x44, 0x38,
0x00, 0x38, 0x44, 0x44, 0x44, 0x28,
0x00, 0x38, 0x44, 0x44, 0x44, 0x7F,
0x00, 0x38, 0x54, 0x54, 0x54, 0x08,
0x00, 0x08, 0x7E, 0x09, 0x09, 0x00,
0x00, 0x18, 0xA4, 0xA4, 0xA4, 0x7C,
0x00, 0x7F, 0x04, 0x04, 0x78, 0x00,
0x00, 0x00, 0x00, 0x7D, 0x40, 0x00,
0x00, 0x40, 0x80, 0x84, 0x7D, 0x00,
0x00, 0x7F, 0x10, 0x28, 0x44, 0x00,
0x00, 0x00, 0x00, 0x7F, 0x40, 0x00,
0x00, 0x7C, 0x04, 0x18, 0x04, 0x78,
0x00, 0x7C, 0x04, 0x04, 0x78, 0x00,
0x00, 0x38, 0x44, 0x44, 0x44, 0x38,
0x00, 0xFC, 0x44, 0x44, 0x44, 0x38,
0x00, 0x38, 0x44, 0x44, 0x44, 0xFC,
0x00, 0x44, 0x78, 0x44, 0x04, 0x08,
0x00, 0x08, 0x54, 0x54, 0x54, 0x20,
0x00, 0x04, 0x3E, 0x44, 0x24, 0x00,
0x00, 0x3C, 0x40, 0x20, 0x7C, 0x00,
0x00, 0x1C, 0x20, 0x40, 0x20, 0x1C,
0x00, 0x3C, 0x60, 0x30, 0x60, 0x3C,
0x00, 0x6C, 0x10, 0x10, 0x6C, 0x00,
0x00, 0x9C, 0xA0, 0x60, 0x3C, 0x00,
0x00, 0x64, 0x54, 0x54, 0x4C, 0x00,
0x00, 0x08, 0x3E, 0x41, 0x41, 0x00,
0x00, 0x00, 0x00, 0x77, 0x00, 0x00,
0x00, 0x00, 0x41, 0x41, 0x3E, 0x08,
0x00, 0x02, 0x01, 0x02, 0x01, 0x00,
0x00, 0x3C, 0x26, 0x23, 0x26, 0x3C
])}
#点阵为：宽x高=16x16
#取模方式：列行式
#阴码
F16_16=[
0x80,0x70,0x00,0xFF,0x10,0x08,0x00,0x7E,0x2A,0xAA,0x2A,0x2A,0x2A,0x7E,0x00,0x00,
0x80,0x60,0x18,0x07,0x08,0x50,0x42,0x4A,0x52,0x42,0x43,0x42,0x52,0x4A,0x42,0x00, #煜
0x84,0x84,0xFC,0x84,0x84,0x00,0x04,0xC4,0x5F,0x44,0xF4,0x44,0x5F,0xC4,0x04,0x00,
0x10,0x30,0x1F,0x08,0x08,0x00,0x84,0x47,0x24,0x14,0x0F,0x14,0x24,0x47,0x84,0x00, #瑛
0x40,0x3C,0x10,0xFF,0x10,0x10,0x20,0x10,0x8F,0x78,0x08,0xF8,0x08,0xF8,0x00,0x00,
0x02,0x06,0x02,0xFF,0x01,0x01,0x04,0x42,0x21,0x18,0x46,0x81,0x40,0x3F,0x00,0x00, #物
0x02,0xFE,0x92,0x92,0xFE,0x02,0x00,0x10,0x11,0x16,0xF0,0x14,0x13,0x10,0x00,0x00,
0x10,0x1F,0x08,0x08,0xFF,0x04,0x81,0x41,0x31,0x0D,0x03,0x0D,0x31,0x41,0x81,0x00, #联
0x00,0xFE,0x02,0x22,0x42,0x82,0x72,0x02,0x22,0x42,0x82,0x72,0x02,0xFE,0x00,0x00,
0x00,0xFF,0x10,0x08,0x06,0x01,0x0E,0x10,0x08,0x06,0x01,0x4E,0x80,0x7F,0x00,0x00, #网
]
#点阵为：宽x高=24x24
#取模方式：列行式
#阴码
F24_24=[
0x00,0x00,0x00,0x00,0x00,0xFC,0x00,0x00,0xC0,0x40,0xF8,0xF8,0x48,0x48,0x48,0x48,0x48,0x48,0x48,0xF8,0x08,0x00,0x00,0x00,
0x00,0x08,0x0E,0x00,0x00,0xFF,0x82,0x01,0x00,0x20,0x27,0xA7,0x22,0x22,0x26,0x3A,0x22,0x22,0xE2,0xA3,0x30,0x20,0x00,0x00,
0x00,0x40,0x20,0x18,0x0F,0x01,0x00,0x01,0x27,0x20,0x20,0x20,0x27,0x2E,0x20,0x20,0x38,0x26,0x21,0x20,0x20,0x30,0x20,0x00,#/*"煜",0*/
0x00,0x10,0x10,0x10,0xF0,0xF0,0x10,0x10,0x10,0x20,0x20,0x20,0xFC,0x20,0xA0,0x20,0x20,0xFC,0x20,0x20,0x20,0x20,0x00,0x00,
0x00,0x04,0x04,0x04,0xFF,0xFF,0x04,0x86,0x84,0x80,0xFC,0x84,0x84,0x84,0xF4,0xFF,0x85,0x84,0x84,0xFC,0x84,0x80,0x80,0x00,
0x00,0x04,0x0C,0x04,0x07,0x03,0x02,0x42,0x41,0x21,0x20,0x10,0x08,0x06,0x03,0x00,0x03,0x04,0x08,0x10,0x30,0x20,0x20,0x00,#/*"瑛",1*/
0x00,0x00,0x00,0xF0,0x90,0x80,0xFE,0x84,0x80,0x80,0x00,0xC0,0x38,0x2E,0xE0,0x60,0x20,0xA0,0xE0,0x20,0x20,0xE0,0x00,0x00,
0x00,0x8C,0x83,0x80,0x40,0x40,0xFF,0x20,0x10,0x92,0x41,0x20,0x18,0x06,0x01,0xC0,0x78,0x0F,0x01,0x00,0xF0,0xFF,0x00,0x00,
0x00,0x00,0x01,0x00,0x00,0x00,0x7F,0x00,0x00,0x20,0x10,0x08,0x04,0x02,0x01,0x10,0x10,0x70,0x30,0x30,0x1F,0x01,0x00,0x00,#/*"物",2*/
0x00,0x08,0x08,0xF8,0x08,0x08,0x08,0x08,0xF8,0x08,0x88,0x80,0x82,0xFC,0xB0,0x80,0x80,0xE0,0x9C,0x8C,0xC4,0x80,0x00,0x00,
0x00,0x00,0x00,0xFF,0x11,0x11,0x11,0x11,0xFF,0x10,0x90,0x10,0x10,0x10,0x10,0xFF,0x3F,0xD0,0x10,0x10,0x10,0x18,0x10,0x00,
0x00,0x00,0x04,0x07,0x02,0x02,0x02,0x01,0x7F,0x41,0x40,0x20,0x10,0x08,0x06,0x01,0x00,0x01,0x06,0x1C,0x30,0x30,0x20,0x00,#/*"联",3*/
0x00,0x00,0x00,0xF8,0x08,0x88,0x08,0x08,0x08,0xC8,0x88,0x08,0x08,0x08,0x08,0x08,0xC8,0x88,0x08,0x08,0xFC,0x00,0x00,0x00,
0x00,0x00,0x00,0xFF,0x00,0x00,0xC1,0x36,0x0E,0x73,0xE0,0x00,0x01,0xC2,0x3C,0x1C,0x73,0xC0,0x00,0x00,0xFF,0x00,0x00,0x00,
0x00,0x00,0x00,0x7F,0x00,0x01,0x00,0x00,0x00,0x00,0x00,0x02,0x01,0x00,0x00,0x00,0x00,0x21,0x20,0x70,0x3F,0x00,0x00,0x00,#/*"网",4*/
]
#点阵为：宽x高=8x16
#取模方式：列行式
#阴码
F8_16=[
0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x20,0x3F,0x21,0x01,0x01,0x21,0x3F,0x20,#/*"H",0*/
0x00,0x00,0xC0,0x38,0xE0,0x00,0x00,0x00,0x20,0x3C,0x23,0x02,0x02,0x27,0x38,0x20,#/*"A",1*/
0x00,0x00,0xC0,0x38,0xE0,0x00,0x00,0x00,0x20,0x3C,0x23,0x02,0x02,0x27,0x38,0x20,#/*"A",2*/
0x00,0x70,0x88,0x08,0x08,0x08,0x38,0x00,0x00,0x38,0x20,0x21,0x21,0x22,0x1C,0x00,#/*"S",3*/
0x00,0xF8,0x88,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x20,0x20,0x20,0x11,0x0E,0x00,#/*"5",4*/
0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00,#/*"0",5*/
0x00,0xE0,0x10,0x88,0x88,0x90,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x20,0x1F,0x00,#/*"6",6*/
]
- board.json
{
"name": "haas506",
"version": "1.0.0",
"io": {
"OLED": {
"type": "I2C",
"port": 1,
"addrWidth": 7,
"freq": 400000,
"mode": "master",
"devAddr": 60
},
"KEY1": {
"type": "GPIO",
"port": 44,
"dir": "irq",
"pull": "pullup",
"intMode": "rising"
},
"led1": {
"type": "GPIO",
"port": 7,
"dir": "output",
"pull": "pulldown"
},
"cs": {
"type": "GPIO",
"port": 15,
"dir": "output",
"pull": "pullup"
},
"dc":{
"type":"GPIO",
"port": 3,
"dir": "output",
"pull":"pullup"
},
"rst":{
"type":"GPIO",
"port": 20,
"dir": "output",
"pull":"pullup"
},
"ST7735S": {
"type": "SPI",
"port": 0,
"mode": "master",
"freq": 2000000
},
"serial1": {
"type": "UART",
"port": 0,
"dataWidth": 8,
"baudRate": 115200,
"stopBits": 1,
"flowControl": "disable",
"parity": "none",
"timeout": 1000
},
"serial2": {
"type": "UART",
"port": 1,
"dataWidth": 8,
"baudRate": 9600,
"stopBits": 1,
"flowControl": "disable",
"parity": "none",
"timeout": 1000
},
"serial3": {
"type": "UART",
"port": 2,
"dataWidth": 8,
"baudRate": 115200,
"stopBits": 1,
"flowControl": "disable",
"parity": "none",
"timeout": 1000
}
},
"debugLevel": "ERROR",
"repl": "enable",
"replPort": 0
}
加入图片
图片命名如下，放入程序同一文件夹。
flower64x48.bmp
test128x160.bmp
3.测试结果
-
清屏/上电初始化完成
-
画空心圆
-
画实心圆
-
画三角形
-
画像素点/画线
-
显示BMP图片
-
显示英文字符，大小6*8
4.待解决
- 更换字库后，字符镜像显示问题
-
更换字库，字符显示出错
-
显示特定大小的英文字符，字体大小：8*16
- 中文字符输出问题
已解决
-
字体大小：24*24
-
字体大小：16*16
- 屏幕刷新速率问题
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