网站建设首页该放什么,云服务器搭建,丹阳网站,软件基地背景#xff1a;最近买了几块ESP32模块#xff0c;看了下mircopython支持还不错#xff0c;所以买了个SPI触摸屏试试水#xff0c;记录一下使用过程。硬件相关#xff1a;SPI触摸屏使用2.4寸屏幕#xff0c;常见淘宝均可买到#xff0c;驱动为ILI9341#xff0c;具体参…背景最近买了几块ESP32模块看了下mircopython支持还不错所以买了个SPI触摸屏试试水记录一下使用过程。硬件相关SPI触摸屏使用2.4寸屏幕常见淘宝均可买到驱动为ILI9341具体参数如下图引脚描述ESP32模块依旧轻松购买于淘宝由于ESP32被很多家封装因此模块各有不同我的如下接口描述网上找了个差异点在于图中使用GIPOxx而开发板印刷使用Dxx例如开发板上D12对应下图的GPIO12其他的不需要关注接线由于ESP32模块有两个可用SPI而触摸屏显示和触摸都是使用SPI协议刚好用完资源SPISCKMOSIMISOCS用途SPI1(HSPI)GPIO14(D14)GPIO13(D13)GPIO12(D12)GPIO15(D15)分配给触摸接口SPI2(VSPI)GPIO18(D18)GPIO23(D23)GPIO19(D19)GPIO5(D5)分配给显示接口图上还会看到VSPI 和 HSPI具体接线如下触摸屏分配ESP32引脚名归属显示设备VCC3V3ESP-IOGNDGNDESP-IOCSD5SPI2RESETD2ESP-IODC/RSD21ESP-IOSDID23SPI2SCKD18SPI2LEDD4ESP-IOSDOD19SPI2触摸设备T_CLKD14SPI1T_CSD15SPI1T_DIND13SPI1T_DOD12SPI1T_IRQD33ESP-IO注意(不建议使用的引脚):不建议使用或限制使用的引脚不建议使用 Strapping引脚 SPI flash 引脚 以及 仅输入的引脚Strapping 引脚GPIO 0GPIO 2GPIO 4GPIO 5 (启动时必须为高电平)GPIO 12 (启动时必须为低电平)GPIO 15 (启动时必须为高电平)注意在硬件上要注意使用外接模块时不能将GPIO12拉高否则将导致ESP32启动异常。还有一些GPIO在启动或重置时其状态更改为高或者输出PWM信号在使用时需要注意。集成在ESP-WROOM-32 的 SPI flash 引脚GPIO 6 到 GPIO 11 在一些 ESP32 开发板中公开。但是这些引脚连接到 ESP-WROOM-32 芯片上的集成 SPI 闪存不推荐用于其他用途。所以不要在你的项目中使用这些引脚GPIO 6 (SCK/CLK)GPIO 7 (SDO/SD0)GPIO 8 (SDI/SD1)GPIO 9 (SHD/SD2)GPIO 10 (SWP/SD3)GPIO 11 (CSC/CMD)仅输入引脚GPIO 34 到 39 是 GPI – 仅输入引脚。这些引脚没有内部上拉或下拉电阻。它们不能用作输出因此只能将这些引脚用作输入GPIO 34GPIO 35GPIO 36GPIO 39这些引脚都是ESP32用于引导加载程序或者烧录模式/在大多数内置USB/Serial的开发板上不需要担心这些引脚的状态开发板会把这些引脚设置为正确的状态以便使用烧录或启动模式。但是如果你有外设连接到这些引脚上当你在尝试上传新代码、用新固件烧写ESP32或重置电路板时可能会遇到麻烦例如不明原因的错误和失败。可能是因为这些外设阻止ESP32进入正确的模式。所以以上的引脚 不建议在项目中使用。软件相关目录结构其中core/screen 文件夹lib/ili9341.py 和 lib/xpt2046.py 以及main.py是我们本次测试文件.效果显示测试触摸测试代码lib/ili9341.pyILI9341 LCD/Touch module.
from time import sleep
from math import cos, sin, pi, radians
from sys import implementation
from framebuf import FrameBuffer, RGB565 # type: ignore
import ustruct # type: ignoredef color565(r, g, b):Return RGB565 color value.Args:r (int): Red value.g (int): Green value.b (int): Blue value.return (r 0xf8) 8 | (g 0xfc) 3 | b 3class Display(object):Serial interface for 16-bit color (5-6-5 RGB) IL9341 display.Note: All coordinates are zero based.# Command constants from ILI9341 datasheetNOP const(0x00) # No-opSWRESET const(0x01) # Software resetRDDID const(0x04) # Read display ID infoRDDST const(0x09) # Read display statusSLPIN const(0x10) # Enter sleep modeSLPOUT const(0x11) # Exit sleep modePTLON const(0x12) # Partial mode onNORON const(0x13) # Normal display mode onRDMODE const(0x0A) # Read display power modeRDMADCTL const(0x0B) # Read display MADCTLRDPIXFMT const(0x0C) # Read display pixel formatRDIMGFMT const(0x0D) # Read display image formatRDSELFDIAG const(0x0F) # Read display self-diagnosticINVOFF const(0x20) # Display inversion offINVON const(0x21) # Display inversion onGAMMASET const(0x26) # Gamma setDISPLAY_OFF const(0x28) # Display offDISPLAY_ON const(0x29) # Display onSET_COLUMN const(0x2A) # Column address setSET_PAGE const(0x2B) # Page address setWRITE_RAM const(0x2C) # Memory writeREAD_RAM const(0x2E) # Memory readPTLAR const(0x30) # Partial areaVSCRDEF const(0x33) # Vertical scrolling definitionMADCTL const(0x36) # Memory access controlVSCRSADD const(0x37) # Vertical scrolling start addressPIXFMT const(0x3A) # COLMOD: Pixel format setWRITE_DISPLAY_BRIGHTNESS const(0x51) # Brightness hardware dependent!READ_DISPLAY_BRIGHTNESS const(0x52)WRITE_CTRL_DISPLAY const(0x53)READ_CTRL_DISPLAY const(0x54)WRITE_CABC const(0x55) # Write Content Adaptive Brightness ControlREAD_CABC const(0x56) # Read Content Adaptive Brightness ControlWRITE_CABC_MINIMUM const(0x5E) # Write CABC Minimum BrightnessREAD_CABC_MINIMUM const(0x5F) # Read CABC Minimum BrightnessFRMCTR1 const(0xB1) # Frame rate control (In normal mode/full colors)FRMCTR2 const(0xB2) # Frame rate control (In idle mode/8 colors)FRMCTR3 const(0xB3) # Frame rate control (In partial mode/full colors)INVCTR const(0xB4) # Display inversion controlDFUNCTR const(0xB6) # Display function controlPWCTR1 const(0xC0) # Power control 1PWCTR2 const(0xC1) # Power control 2PWCTRA const(0xCB) # Power control APWCTRB const(0xCF) # Power control BVMCTR1 const(0xC5) # VCOM control 1VMCTR2 const(0xC7) # VCOM control 2RDID1 const(0xDA) # Read ID 1RDID2 const(0xDB) # Read ID 2RDID3 const(0xDC) # Read ID 3RDID4 const(0xDD) # Read ID 4GMCTRP1 const(0xE0) # Positive gamma correctionGMCTRN1 const(0xE1) # Negative gamma correctionDTCA const(0xE8) # Driver timing control ADTCB const(0xEA) # Driver timing control BPOSC const(0xED) # Power on sequence controlENABLE3G const(0xF2) # Enable 3 gamma controlPUMPRC const(0xF7) # Pump ratio controlROTATE {0: 0x88,90: 0xE8,180: 0x48,270: 0x28}def __init__(self, spi, cs, dc, rst,width240, height320, rotation0):Initialize OLED.Args:spi (Class Spi): SPI interface for OLEDcs (Class Pin): Chip select pindc (Class Pin): Data/Command pinrst (Class Pin): Reset pinwidth (Optional int): Screen width (default 240)height (Optional int): Screen height (default 320)rotation (Optional int): Rotation must be 0 default, 90. 180 or 270self.spi spiself.cs csself.dc dcself.rst rstself.width widthself.height heightif rotation not in self.ROTATE.keys():raise RuntimeError(Rotation must be 0, 90, 180 or 270.)else:self.rotation self.ROTATE[rotation]# Initialize GPIO pins and set implementation specific methodsif implementation.name circuitpython:self.cs.switch_to_output(valueTrue)self.dc.switch_to_output(valueFalse)self.rst.switch_to_output(valueTrue)self.reset self.reset_cpyself.write_cmd self.write_cmd_cpyself.write_data self.write_data_cpyelse:self.cs.init(self.cs.OUT, value1)self.dc.init(self.dc.OUT, value0)self.rst.init(self.rst.OUT, value1)self.reset self.reset_mpyself.write_cmd self.write_cmd_mpyself.write_data self.write_data_mpyself.reset()# Send initialization commandsself.write_cmd(self.SWRESET) # Software resetsleep(.1)self.write_cmd(self.PWCTRB, 0x00, 0xC1, 0x30) # Pwr ctrl Bself.write_cmd(self.POSC, 0x64, 0x03, 0x12, 0x81) # Pwr on seq. ctrlself.write_cmd(self.DTCA, 0x85, 0x00, 0x78) # Driver timing ctrl Aself.write_cmd(self.PWCTRA, 0x39, 0x2C, 0x00, 0x34, 0x02) # Pwr ctrl Aself.write_cmd(self.PUMPRC, 0x20) # Pump ratio controlself.write_cmd(self.DTCB, 0x00, 0x00) # Driver timing ctrl Bself.write_cmd(self.PWCTR1, 0x23) # Pwr ctrl 1self.write_cmd(self.PWCTR2, 0x10) # Pwr ctrl 2self.write_cmd(self.VMCTR1, 0x3E, 0x28) # VCOM ctrl 1self.write_cmd(self.VMCTR2, 0x86) # VCOM ctrl 2self.write_cmd(self.MADCTL, self.rotation) # Memory access ctrlself.write_cmd(self.VSCRSADD, 0x00) # Vertical scrolling start addressself.write_cmd(self.PIXFMT, 0x55) # COLMOD: Pixel formatself.write_cmd(self.FRMCTR1, 0x00, 0x18) # Frame rate ctrlself.write_cmd(self.DFUNCTR, 0x08, 0x82, 0x27)self.write_cmd(self.ENABLE3G, 0x00) # Enable 3 gamma ctrlself.write_cmd(self.GAMMASET, 0x01) # Gamma curve selectedself.write_cmd(self.GMCTRP1, 0x0F, 0x31, 0x2B, 0x0C, 0x0E, 0x08, 0x4E,0xF1, 0x37, 0x07, 0x10, 0x03, 0x0E, 0x09, 0x00)self.write_cmd(self.GMCTRN1, 0x00, 0x0E, 0x14, 0x03, 0x11, 0x07, 0x31,0xC1, 0x48, 0x08, 0x0F, 0x0C, 0x31, 0x36, 0x0F)self.write_cmd(self.SLPOUT) # Exit sleepsleep(.1)self.write_cmd(self.DISPLAY_ON) # Display onsleep(.1)self.clear()def block(self, x0, y0, x1, y1, data):Write a block of data to display.Args:x0 (int): Starting X position.y0 (int): Starting Y position.x1 (int): Ending X position.y1 (int): Ending Y position.data (bytes): Data buffer to write.self.write_cmd(self.SET_COLUMN, *ustruct.pack(HH, x0, x1))self.write_cmd(self.SET_PAGE, *ustruct.pack(HH, y0, y1))self.write_cmd(self.WRITE_RAM)self.write_data(data)def cleanup(self):Clean up resources.self.clear()self.display_off()self.spi.deinit()print(display off)def clear(self, color0):Clear display.Args:color (Optional int): RGB565 color value (Default: 0 Black).w self.widthh self.height# Clear display in 1024 byte blocksif color:line color.to_bytes(2, big) * (w * 8)else:line bytearray(w * 16)for y in range(0, h, 8):self.block(0, y, w - 1, y 7, line)def display_off(self):Turn display off.self.write_cmd(self.DISPLAY_OFF)def display_on(self):Turn display on.self.write_cmd(self.DISPLAY_ON)def draw_circle(self, x0, y0, r, color):Draw a circle.Args:x0 (int): X coordinate of center point.y0 (int): Y coordinate of center point.r (int): Radius.color (int): RGB565 color value.f 1 - rdx 1dy -r - rx 0y rself.draw_pixel(x0, y0 r, color)self.draw_pixel(x0, y0 - r, color)self.draw_pixel(x0 r, y0, color)self.draw_pixel(x0 - r, y0, color)while x y:if f 0:y - 1dy 2f dyx 1dx 2f dxself.draw_pixel(x0 x, y0 y, color)self.draw_pixel(x0 - x, y0 y, color)self.draw_pixel(x0 x, y0 - y, color)self.draw_pixel(x0 - x, y0 - y, color)self.draw_pixel(x0 y, y0 x, color)self.draw_pixel(x0 - y, y0 x, color)self.draw_pixel(x0 y, y0 - x, color)self.draw_pixel(x0 - y, y0 - x, color)def draw_ellipse(self, x0, y0, a, b, color):Draw an ellipse.Args:x0, y0 (int): Coordinates of center point.a (int): Semi axis horizontal.b (int): Semi axis vertical.color (int): RGB565 color value.Note:The center point is the center of the x0,y0 pixel.Since pixels are not divisible, the axes are integer roundedup to complete on a full pixel. Therefore the major andminor axes are increased by 1.a2 a * ab2 b * btwoa2 a2 a2twob2 b2 b2x 0y bpx 0py twoa2 * y# Plot initial pointsself.draw_pixel(x0 x, y0 y, color)self.draw_pixel(x0 - x, y0 y, color)self.draw_pixel(x0 x, y0 - y, color)self.draw_pixel(x0 - x, y0 - y, color)# Region 1p round(b2 - (a2 * b) (0.25 * a2))while px py:x 1px twob2if p 0:p b2 pxelse:y - 1py - twoa2p b2 px - pyself.draw_pixel(x0 x, y0 y, color)self.draw_pixel(x0 - x, y0 y, color)self.draw_pixel(x0 x, y0 - y, color)self.draw_pixel(x0 - x, y0 - y, color)# Region 2p round(b2 * (x 0.5) * (x 0.5) a2 * (y - 1) * (y - 1) - a2 * b2)while y 0:y - 1py - twoa2if p 0:p a2 - pyelse:x 1px twob2p a2 - py pxself.draw_pixel(x0 x, y0 y, color)self.draw_pixel(x0 - x, y0 y, color)self.draw_pixel(x0 x, y0 - y, color)self.draw_pixel(x0 - x, y0 - y, color)def draw_hline(self, x, y, w, color):Draw a horizontal line.Args:x (int): Starting X position.y (int): Starting Y position.w (int): Width of line.color (int): RGB565 color value.if self.is_off_grid(x, y, x w - 1, y):returnline color.to_bytes(2, big) * wself.block(x, y, x w - 1, y, line)def draw_image(self, path, x0, y0, w320, h240):Draw image from flash.Args:path (string): Image file path.x (int): X coordinate of image left. Default is 0.y (int): Y coordinate of image top. Default is 0.w (int): Width of image. Default is 320.h (int): Height of image. Default is 240.x2 x w - 1y2 y h - 1if self.is_off_grid(x, y, x2, y2):returnwith open(path, rb) as f:chunk_height 1024 // wchunk_count, remainder divmod(h, chunk_height)chunk_size chunk_height * w * 2chunk_y yif chunk_count:for c in range(0, chunk_count):buf f.read(chunk_size)self.block(x, chunk_y,x2, chunk_y chunk_height - 1,buf)chunk_y chunk_heightif remainder:buf f.read(remainder * w * 2)self.block(x, chunk_y,x2, chunk_y remainder - 1,buf)def draw_letter(self, x, y, letter, font, color, background0,landscapeFalse):Draw a letter.Args:x (int): Starting X position.y (int): Starting Y position.letter (string): Letter to draw.font (XglcdFont object): Font.color (int): RGB565 color value.background (int): RGB565 background color (default: black).landscape (bool): Orientation (default: False portrait)buf, w, h font.get_letter(letter, color, background, landscape)# Check for errors (Font could be missing specified letter)if w 0:return w, hif landscape:y - wif self.is_off_grid(x, y, x h - 1, y w - 1):return 0, 0self.block(x, y,x h - 1, y w - 1,buf)else:if self.is_off_grid(x, y, x w - 1, y h - 1):return 0, 0self.block(x, y,x w - 1, y h - 1,buf)return w, hdef draw_line(self, x1, y1, x2, y2, color):Draw a line using Bresenhams algorithm.Args:x1, y1 (int): Starting coordinates of the linex2, y2 (int): Ending coordinates of the linecolor (int): RGB565 color value.# Check for horizontal lineif y1 y2:if x1 x2:x1, x2 x2, x1self.draw_hline(x1, y1, x2 - x1 1, color)return# Check for vertical lineif x1 x2:if y1 y2:y1, y2 y2, y1self.draw_vline(x1, y1, y2 - y1 1, color)return# Confirm coordinates in boundaryif self.is_off_grid(min(x1, x2), min(y1, y2),max(x1, x2), max(y1, y2)):return# Changes in x, ydx x2 - x1dy y2 - y1# Determine how steep the line isis_steep abs(dy) abs(dx)# Rotate lineif is_steep:x1, y1 y1, x1x2, y2 y2, x2# Swap start and end points if necessaryif x1 x2:x1, x2 x2, x1y1, y2 y2, y1# Recalculate differentialsdx x2 - x1dy y2 - y1# Calculate errorerror dx 1ystep 1 if y1 y2 else -1y y1for x in range(x1, x2 1):# Had to reverse HW ????if not is_steep:self.draw_pixel(x, y, color)else:self.draw_pixel(y, x, color)error - abs(dy)if error 0:y ysteperror dxdef draw_lines(self, coords, color):Draw multiple lines.Args:coords ([[int, int],...]): Line coordinate X, Y pairscolor (int): RGB565 color value.# Starting pointx1, y1 coords[0]# Iterate through coordinatesfor i in range(1, len(coords)):x2, y2 coords[i]self.draw_line(x1, y1, x2, y2, color)x1, y1 x2, y2def draw_pixel(self, x, y, color):Draw a single pixel.Args:x (int): X position.y (int): Y position.color (int): RGB565 color value.if self.is_off_grid(x, y, x, y):returnself.block(x, y, x, y, color.to_bytes(2, big))def draw_polygon(self, sides, x0, y0, r, color, rotate0):Draw an n-sided regular polygon.Args:sides (int): Number of polygon sides.x0, y0 (int): Coordinates of center point.r (int): Radius.color (int): RGB565 color value.rotate (Optional float): Rotation in degrees relative to origin.Note:The center point is the center of the x0,y0 pixel.Since pixels are not divisible, the radius is integer roundedup to complete on a full pixel. Therefore diameter 2 x r 1.coords []theta radians(rotate)n sides 1for s in range(n):t 2.0 * pi * s / sides thetacoords.append([int(r * cos(t) x0), int(r * sin(t) y0)])# Cast to python float first to fix rounding errorsself.draw_lines(coords, colorcolor)def draw_rectangle(self, x, y, w, h, color):Draw a rectangle.Args:x (int): Starting X position.y (int): Starting Y position.w (int): Width of rectangle.h (int): Height of rectangle.color (int): RGB565 color value.x2 x w - 1y2 y h - 1self.draw_hline(x, y, w, color)self.draw_hline(x, y2, w, color)self.draw_vline(x, y, h, color)self.draw_vline(x2, y, h, color)def draw_sprite(self, buf, x, y, w, h):Draw a sprite (optimized for horizontal drawing).Args:buf (bytearray): Buffer to draw.x (int): Starting X position.y (int): Starting Y position.w (int): Width of drawing.h (int): Height of drawing.x2 x w - 1y2 y h - 1if self.is_off_grid(x, y, x2, y2):returnself.block(x, y, x2, y2, buf)def draw_text(self, x, y, text, font, color, background0,landscapeFalse, spacing1):Draw text.Args:x (int): Starting X position.y (int): Starting Y position.text (string): Text to draw.font (XglcdFont object): Font.color (int): RGB565 color value.background (int): RGB565 background color (default: black).landscape (bool): Orientation (default: False portrait)spacing (int): Pixels between letters (default: 1)for letter in text:# Get letter array and letter dimensionsw, h self.draw_letter(x, y, letter, font, color, background,landscape)# Stop on errorif w 0 or h 0:print(Invalid width {0} or height {1}.format(w, h))returnif landscape:# Fill in spacingif spacing:self.fill_hrect(x, y - w - spacing, h, spacing, background)# Position y for next lettery - (w spacing)else:# Fill in spacingif spacing:self.fill_hrect(x w, y, spacing, h, background)# Position x for next letterx (w spacing)# # Fill in spacing# if spacing:# self.fill_vrect(x w, y, spacing, h, background)# # Position x for next letter# x w spacingdef draw_text8x8(self, x, y, text, color, background0,rotate0):Draw text using built-in MicroPython 8x8 bit font.Args:x (int): Starting X position.y (int): Starting Y position.text (string): Text to draw.color (int): RGB565 color value.background (int): RGB565 background color (default: black).rotate(int): 0, 90, 180, 270w len(text) * 8h 8# Confirm coordinates in boundaryif self.is_off_grid(x, y, x 7, y 7):return# Rearrange colorr (color 0xF800) 8g (color 0x07E0) 3b (color 0x1F) 3buf bytearray(w * 16)fbuf FrameBuffer(buf, w, h, RGB565)if background ! 0:bg_r (background 0xF800) 8bg_g (background 0x07E0) 3bg_b (background 0x1F) 3fbuf.fill(color565(bg_b, bg_r, bg_g))fbuf.text(text, 0, 0, color565(b, r, g))if rotate 0:self.block(x, y, x w - 1, y (h - 1), buf)elif rotate 90:buf2 bytearray(w * 16)fbuf2 FrameBuffer(buf2, h, w, RGB565)for y1 in range(h):for x1 in range(w):fbuf2.pixel(y1, x1,fbuf.pixel(x1, (h - 1) - y1))self.block(x, y, x (h - 1), y w - 1, buf2)elif rotate 180:buf2 bytearray(w * 16)fbuf2 FrameBuffer(buf2, w, h, RGB565)for y1 in range(h):for x1 in range(w):fbuf2.pixel(x1, y1,fbuf.pixel((w - 1) - x1, (h - 1) - y1))self.block(x, y, x w - 1, y (h - 1), buf2)elif rotate 270:buf2 bytearray(w * 16)fbuf2 FrameBuffer(buf2, h, w, RGB565)for y1 in range(h):for x1 in range(w):fbuf2.pixel(y1, x1,fbuf.pixel((w - 1) - x1, y1))self.block(x, y, x (h - 1), y w - 1, buf2)def draw_vline(self, x, y, h, color):Draw a vertical line.Args:x (int): Starting X position.y (int): Starting Y position.h (int): Height of line.color (int): RGB565 color value.# Confirm coordinates in boundaryif self.is_off_grid(x, y, x, y h - 1):returnline color.to_bytes(2, big) * hself.block(x, y, x, y h - 1, line)def fill_circle(self, x0, y0, r, color):Draw a filled circle.Args:x0 (int): X coordinate of center point.y0 (int): Y coordinate of center point.r (int): Radius.color (int): RGB565 color value.f 1 - rdx 1dy -r - rx 0y rself.draw_vline(x0, y0 - r, 2 * r 1, color)while x y:if f 0:y - 1dy 2f dyx 1dx 2f dxself.draw_vline(x0 x, y0 - y, 2 * y 1, color)self.draw_vline(x0 - x, y0 - y, 2 * y 1, color)self.draw_vline(x0 - y, y0 - x, 2 * x 1, color)self.draw_vline(x0 y, y0 - x, 2 * x 1, color)def fill_ellipse(self, x0, y0, a, b, color):Draw a filled ellipse.Args:x0, y0 (int): Coordinates of center point.a (int): Semi axis horizontal.b (int): Semi axis vertical.color (int): RGB565 color value.Note:The center point is the center of the x0,y0 pixel.Since pixels are not divisible, the axes are integer roundedup to complete on a full pixel. Therefore the major andminor axes are increased by 1.a2 a * ab2 b * btwoa2 a2 a2twob2 b2 b2x 0y bpx 0py twoa2 * y# Plot initial pointsself.draw_line(x0, y0 - y, x0, y0 y, color)# Region 1p round(b2 - (a2 * b) (0.25 * a2))while px py:x 1px twob2if p 0:p b2 pxelse:y - 1py - twoa2p b2 px - pyself.draw_line(x0 x, y0 - y, x0 x, y0 y, color)self.draw_line(x0 - x, y0 - y, x0 - x, y0 y, color)# Region 2p round(b2 * (x 0.5) * (x 0.5) a2 * (y - 1) * (y - 1) - a2 * b2)while y 0:y - 1py - twoa2if p 0:p a2 - pyelse:x 1px twob2p a2 - py pxself.draw_line(x0 x, y0 - y, x0 x, y0 y, color)self.draw_line(x0 - x, y0 - y, x0 - x, y0 y, color)def fill_hrect(self, x, y, w, h, color):Draw a filled rectangle (optimized for horizontal drawing).Args:x (int): Starting X position.y (int): Starting Y position.w (int): Width of rectangle.h (int): Height of rectangle.color (int): RGB565 color value.if self.is_off_grid(x, y, x w - 1, y h - 1):returnchunk_height 1024 // wchunk_count, remainder divmod(h, chunk_height)chunk_size chunk_height * wchunk_y yif chunk_count:buf color.to_bytes(2, big) * chunk_sizefor c in range(0, chunk_count):self.block(x, chunk_y,x w - 1, chunk_y chunk_height - 1,buf)chunk_y chunk_heightif remainder:buf color.to_bytes(2, big) * remainder * wself.block(x, chunk_y,x w - 1, chunk_y remainder - 1,buf)def fill_rectangle(self, x, y, w, h, color):Draw a filled rectangle.Args:x (int): Starting X position.y (int): Starting Y position.w (int): Width of rectangle.h (int): Height of rectangle.color (int): RGB565 color value.if self.is_off_grid(x, y, x w - 1, y h - 1):returnif w h:self.fill_hrect(x, y, w, h, color)else:self.fill_vrect(x, y, w, h, color)def fill_polygon(self, sides, x0, y0, r, color, rotate0):Draw a filled n-sided regular polygon.Args:sides (int): Number of polygon sides.x0, y0 (int): Coordinates of center point.r (int): Radius.color (int): RGB565 color value.rotate (Optional float): Rotation in degrees relative to origin.Note:The center point is the center of the x0,y0 pixel.Since pixels are not divisible, the radius is integer roundedup to complete on a full pixel. Therefore diameter 2 x r 1.# Determine side coordinatescoords []theta radians(rotate)n sides 1for s in range(n):t 2.0 * pi * s / sides thetacoords.append([int(r * cos(t) x0), int(r * sin(t) y0)])# Starting pointx1, y1 coords[0]# Minimum Maximum X dictxdict {y1: [x1, x1]}# Iterate through coordinatesfor row in coords[1:]:x2, y2 rowxprev, yprev x2, y2# Calculate perimeter# Check for horizontal sideif y1 y2:if x1 x2:x1, x2 x2, x1if y1 in xdict:xdict[y1] [min(x1, xdict[y1][0]), max(x2, xdict[y1][1])]else:xdict[y1] [x1, x2]x1, y1 xprev, yprevcontinue# Non horizontal side# Changes in x, ydx x2 - x1dy y2 - y1# Determine how steep the line isis_steep abs(dy) abs(dx)# Rotate lineif is_steep:x1, y1 y1, x1x2, y2 y2, x2# Swap start and end points if necessaryif x1 x2:x1, x2 x2, x1y1, y2 y2, y1# Recalculate differentialsdx x2 - x1dy y2 - y1# Calculate errorerror dx 1ystep 1 if y1 y2 else -1y y1# Calcualte minimum and maximum x valuesfor x in range(x1, x2 1):if is_steep:if x in xdict:xdict[x] [min(y, xdict[x][0]), max(y, xdict[x][1])]else:xdict[x] [y, y]else:if y in xdict:xdict[y] [min(x, xdict[y][0]), max(x, xdict[y][1])]else:xdict[y] [x, x]error - abs(dy)if error 0:y ysteperror dxx1, y1 xprev, yprev# Fill polygonfor y, x in xdict.items():self.draw_hline(x[0], y, x[1] - x[0] 2, color)def fill_vrect(self, x, y, w, h, color):Draw a filled rectangle (optimized for vertical drawing).Args:x (int): Starting X position.y (int): Starting Y position.w (int): Width of rectangle.h (int): Height of rectangle.color (int): RGB565 color value.if self.is_off_grid(x, y, x w - 1, y h - 1):returnchunk_width 1024 // hchunk_count, remainder divmod(w, chunk_width)chunk_size chunk_width * hchunk_x xif chunk_count:buf color.to_bytes(2, big) * chunk_sizefor c in range(0, chunk_count):self.block(chunk_x, y,chunk_x chunk_width - 1, y h - 1,buf)chunk_x chunk_widthif remainder:buf color.to_bytes(2, big) * remainder * hself.block(chunk_x, y,chunk_x remainder - 1, y h - 1,buf)def is_off_grid(self, xmin, ymin, xmax, ymax):Check if coordinates extend past display boundaries.Args:xmin (int): Minimum horizontal pixel.ymin (int): Minimum vertical pixel.xmax (int): Maximum horizontal pixel.ymax (int): Maximum vertical pixel.Returns:boolean: False Coordinates OK, True Error.if xmin 0:print(x-coordinate: {0} below minimum of 0..format(xmin))return Trueif ymin 0:print(y-coordinate: {0} below minimum of 0..format(ymin))return Trueif xmax self.width:print(x-coordinate: {0} above maximum of {1}..format(xmax, self.width - 1))return Trueif ymax self.height:print(y-coordinate: {0} above maximum of {1}..format(ymax, self.height - 1))return Truereturn Falsedef load_sprite(self, path, w, h):Load sprite image.Args:path (string): Image file path.w (int): Width of image.h (int): Height of image.Notes:w x h cannot exceed 2048buf_size w * h * 2with open(path, rb) as f:return f.read(buf_size)def reset_cpy(self):Perform reset: Lowinitialization, Highnormal operation.Notes: CircuitPython implemntationself.rst.value Falsesleep(.05)self.rst.value Truesleep(.05)def reset_mpy(self):Perform reset: Lowinitialization, Highnormal operation.Notes: MicroPython implemntationself.rst(0)sleep(.05)self.rst(1)sleep(.05)def scroll(self, y):Scroll display vertically.Args:y (int): Number of pixels to scroll display.self.write_cmd(self.VSCRSADD, y 8, y 0xFF)def set_scroll(self, top, bottom):Set the height of the top and bottom scroll margins.Args:top (int): Height of top scroll marginbottom (int): Height of bottom scroll marginif top bottom self.height:middle self.height - (top bottom)print(top, middle, bottom)self.write_cmd(self.VSCRDEF,top 8,top 0xFF,middle 8,middle 0xFF,bottom 8,bottom 0xFF)def sleep(self, enableTrue):Enters or exits sleep mode.Args:enable (bool): True (default)Enter sleep mode, FalseExit sleepif enable:self.write_cmd(self.SLPIN)else:self.write_cmd(self.SLPOUT)def write_cmd_mpy(self, command, *args):Write command to OLED (MicroPython).Args:command (byte): ILI9341 command code.*args (optional bytes): Data to transmit.self.dc(0)self.cs(0)self.spi.write(bytearray([command]))self.cs(1)# Handle any passed dataif len(args) 0:self.write_data(bytearray(args))def write_cmd_cpy(self, command, *args):Write command to OLED (CircuitPython).Args:command (byte): ILI9341 command code.*args (optional bytes): Data to transmit.self.dc.value Falseself.cs.value False# Confirm SPI locked before writingwhile not self.spi.try_lock():passself.spi.write(bytearray([command]))self.spi.unlock()self.cs.value True# Handle any passed dataif len(args) 0:self.write_data(bytearray(args))def write_data_mpy(self, data):Write data to OLED (MicroPython).Args:data (bytes): Data to transmit.self.dc(1)self.cs(0)self.spi.write(data)self.cs(1)def write_data_cpy(self, data):Write data to OLED (CircuitPython).Args:data (bytes): Data to transmit.self.dc.value Trueself.cs.value False# Confirm SPI locked before writingwhile not self.spi.try_lock():passself.spi.write(data)self.spi.unlock()self.cs.value Truelib/xpt2046.pyXPT2046 Touch module.
from time import sleepclass Touch(object):Serial interface for XPT2046 Touch Screen Controller.# Command constants from ILI9341 datasheetGET_X const(0b11010000) # X positionGET_Y const(0b10010000) # Y positionGET_Z1 const(0b10110000) # Z1 positionGET_Z2 const(0b11000000) # Z2 positionGET_TEMP0 const(0b10000000) # Temperature 0GET_TEMP1 const(0b11110000) # Temperature 1GET_BATTERY const(0b10100000) # Battery monitorGET_AUX const(0b11100000) # Auxiliary input to ADCdef __init__(self, spi, cs, int_pinNone, int_handlerNone,width240, height320,x_min100, x_max1962, y_min100, y_max1900):Initialize touch screen controller.Args:spi (Class Spi): SPI interface for OLEDcs (Class Pin): Chip select pinint_pin (Class Pin): Touch controller interrupt pinint_handler (function): Handler for screen interruptwidth (int): Width of LCD screenheight (int): Height of LCD screenx_min (int): Minimum x coordinatex_max (int): Maximum x coordinatey_min (int): Minimum Y coordinatey_max (int): Maximum Y coordinateself.spi spiself.cs csself.cs.init(self.cs.OUT, value1)self.rx_buf bytearray(3) # Receive bufferself.tx_buf bytearray(3) # Transmit bufferself.width widthself.height height# Set calibrationself.x_min x_minself.x_max x_maxself.y_min y_minself.y_max y_maxself.x_multiplier width / (x_max - x_min)self.x_add x_min * -self.x_multiplierself.y_multiplier height / (y_max - y_min)self.y_add y_min * -self.y_multiplierif int_pin is not None:self.int_pin int_pinself.int_pin.init(int_pin.IN)self.int_handler int_handlerself.int_locked Falseint_pin.irq(triggerint_pin.IRQ_FALLING | int_pin.IRQ_RISING,handlerself.int_press)def get_touch(self):Take multiple samples to get accurate touch reading.timeout 2 # set timeout to 2 secondsconfidence 5buff [[0, 0] for x in range(confidence)]buf_length confidence # Require a confidence of 5 good samplesbuffptr 0 # Track current buffer positionnsamples 0 # Count sampleswhile timeout 0:if nsamples buf_length:meanx sum([c[0] for c in buff]) // buf_lengthmeany sum([c[1] for c in buff]) // buf_lengthdev sum([(c[0] - meanx)**2 (c[1] - meany)**2 for c in buff]) / buf_lengthif dev 50: # Deviation should be under margin of 50return self.normalize(meanx, meany)# get a new valuesample self.raw_touch() # get a touchif sample is None:nsamples 0 # Invalidate buffelse:buff[buffptr] sample # put in buffbuffptr (buffptr 1) % buf_length # Incr, until rollovernsamples min(nsamples 1, buf_length) # Incr. until maxsleep(.05)timeout - .05return Nonedef int_press(self, pin):Send X,Y values to passed interrupt handler.if not pin.value() and not self.int_locked:self.int_locked True # Lock Interruptbuff self.raw_touch()if buff is not None:x, y self.normalize(*buff)self.int_handler(x, y)sleep(.1) # Debounce falling edgeelif pin.value() and self.int_locked:sleep(.1) # Debounce rising edgeself.int_locked False # Unlock interruptdef normalize(self, x, y):Normalize mean X,Y values to match LCD screen.x int(self.x_multiplier * x self.x_add)y int(self.y_multiplier * y self.y_add)return x, ydef raw_touch(self):Read raw X,Y touch values.Returns:tuple(int, int): X, Yx self.send_command(self.GET_X)y self.send_command(self.GET_Y)if self.x_min x self.x_max and self.y_min y self.y_max:return (x, y)else:return Nonedef send_command(self, command):Write command to XT2046 (MicroPython).Args:command (byte): XT2046 command code.Returns:int: 12 bit responseself.tx_buf[0] commandself.cs(0)self.spi.write_readinto(self.tx_buf, self.rx_buf)self.cs(1)return (self.rx_buf[1] 4) | (self.rx_buf[2] 4)core/screen/TLedCfg.py
class TLedConfig:def __init__(self) - None:self.CS 15 # 片选 低电平使能self.RESET 2 # 低电平复位self.DC 21 # 液晶屏寄存器/数据选择信号0寄存器1数据self.SDI 23 # MOSI 写self.SCK 18 # 时钟self.LED 4 # 背光控制高电平点亮self.SDO 19 # MISO 读self.T_CLK 14 # 触摸时钟self.T_CS 27 # 片选低电平使能self.T_DIN 13 # 总线输入接MOSIself.T_DO 12 # 总线输出接MISOself.T_IRQ 33 # 中断检测到触摸时为低电平
core/screen/test.pyfrom lib.ili9341 import Display, color565
from lib.xpt2046 import Touch
from machine import Pin, SPI, idle
from core.screen.TLedCfg import TLedConfig
from time import sleepdef ScreenTest():ledCfg TLedConfig()power Pin(ledCfg.LED, Pin.OUT)power.value(1)spi SPI(2, baudrate40000000, sckPin(ledCfg.SCK), mosiPin(ledCfg.SDI))display Display(spi, dcPin(ledCfg.DC), csPin(ledCfg.CS), rstPin(ledCfg.RESET))display.clear(color565(64, 0, 255))sleep(1)display.clear()display.draw_hline(10, 319, 229, color565(255, 0, 255))sleep(1)display.draw_vline(10, 0, 319, color565(0, 255, 255))sleep(1)display.fill_hrect(23, 50, 30, 75, color565(255, 255, 255))sleep(1)display.draw_hline(0, 0, 222, color565(255, 0, 0))sleep(1)display.draw_line(127, 0, 64, 127, color565(255, 255, 0))sleep(2)display.clear()coords [[0, 63], [78, 80], [122, 92], [50, 50], [78, 15], [0, 63]]display.draw_lines(coords, color565(0, 255, 255))sleep(1)display.clear()display.fill_polygon(7, 120, 120, 100, color565(0, 255, 0))sleep(1)display.fill_rectangle(0, 0, 15, 227, color565(255, 0, 0))sleep(1)display.clear()display.fill_rectangle(0, 0, 163, 163, color565(128, 128, 255))sleep(1)display.draw_rectangle(0, 64, 163, 163, color565(255, 0, 255))sleep(1)display.fill_rectangle(64, 0, 163, 163, color565(128, 0, 255))sleep(1)display.draw_polygon(3, 120, 286, 30, color565(0, 64, 255), rotate15)sleep(3)display.clear()display.fill_circle(132, 132, 70, color565(0, 255, 0))sleep(1)display.draw_circle(132, 96, 70, color565(0, 0, 255))sleep(1)display.fill_ellipse(96, 96, 30, 16, color565(255, 0, 0))sleep(1)display.draw_ellipse(96, 256, 16, 30, color565(255, 255, 0))sleep(5)display.cleanup()class Demo(object):Touchscreen simple demo.CYAN color565(0, 255, 255)PURPLE color565(255, 0, 255)WHITE color565(255, 255, 255)def __init__(self, display, spi2):Initialize box.Args:display (ILI9341): display objectspi2 (SPI): SPI busledCfg TLedConfig()self.display displayself.touch Touch(spi2, csPin(ledCfg.T_CS), int_pinPin(ledCfg.T_IRQ),int_handlerself.touchscreen_press)# Display initial messageself.display.draw_text8x8(self.display.width // 2 - 32,self.display.height - 9,TOUCH ME,self.WHITE,backgroundself.PURPLE)# A small 5x5 sprite for the dotself.dot bytearray(b\x00\x00\x07\xE0\xF8\x00\x07\xE0\x00\x00\x07\xE0\xF8\x00\xF8\x00\xF8\x00\x07\xE0\xF8\x00\xF8\x00\xF8\x00\xF8\x00\xF8\x00\x07\xE0\xF8\x00\xF8\x00\xF8\x00\x07\xE0\x00\x00\x07\xE0\xF8\x00\x07\xE0\x00\x00)def touchscreen_press(self, x, y):Process touchscreen press events.print(touch once ... ...)# Y needs to be flipped# y (self.display.height - 1) - y# Display coordinatesself.display.draw_text8x8(self.display.width // 2 - 32,self.display.height - 9,{0:03d}, {1:03d}.format(x, y),self.CYAN)# Draw dotself.display.draw_sprite(self.dot, x ,y, 5, 5)def TouchTest():Test code.ledCfg TLedConfig()power Pin(ledCfg.LED, Pin.OUT)power.value(1)spi1 SPI(2, baudrate32000000, sckPin(ledCfg.SCK), mosiPin(ledCfg.SDI))spi2 SPI(1, baudrate1000000, sckPin(ledCfg.T_CLK), mosiPin(ledCfg.T_DIN))display Display(spi1, dcPin(ledCfg.DC), csPin(ledCfg.CS), rstPin(ledCfg.RESET))# display Display(spi1, dcPin(4), csPin(16), rstPin(17))# spi2 SPI(2, baudrate1000000, sckPin(18), mosiPin(23), misoPin(19))Demo(display, spi2)try:while True:idle()except KeyboardInterrupt:print(\nCtrl-C pressed. Cleaning up and exiting...)finally:display.cleanup()main.pyfrom core.WifiManager import WifiManager
from core.screen.TLedCfg import TLedConfig
from core.screen.test import ScreenTest,TouchTestdef main():print(Welcome to MicroPython!)# wifi WifiManager()# wifi.start_ap(esp32,12345678)if __name__ __main__:main()ScreenTest()# TouchTest()main函数里测试哪个就把另一个注释就好。附录驱动和参考主要来自如下https://github.com/rdagger/micropython-ili9341LVGLhttps://github.com/lvgl/lvgl/tree/b66512183ab0ba3b36e8175504fa6fe9cd6e5312ESP32引脚参考大全ESP32 – GPIO 引脚参考大全 – 凌顺实验室 (lingshunlab.com)
