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/** **************************************************************************************************** * @file spilcd.cpp * @author * @version V1.0 * @date 2023-12-01 * @brief SPILCD 驱动代码 * 修改说明 * V1.0 20231201 * 第一次发布 * **************************************************************************************************** */ #include "spilcd.h" #include "font.h" #include <SPI.h> #include "xl9555.h" #define SPI_LCD_TYPE 1 /* SPI接口屏幕类型（1：2.4寸SPILCD 0：1.3寸SPILCD） */ /* LCD的宽和高定义 */ #if SPI_LCD_TYPE /* 2.4寸SPI_LCD屏幕 */ uint16_t spilcd_width = 240; /* 屏幕的宽度 240(竖屏) */ uint16_t spilcd_height = 320; /* 屏幕的宽度 320(竖屏) */ #else uint16_t spilcd_width = 240; /* 屏幕的宽度 240(竖屏) */ uint16_t spilcd_height = 240; /* 屏幕的宽度 240(竖屏) */ #endif /* 1.3寸SPI_LCD屏幕 */ uint8_t spilcd_dir = 1; /* 默认横屏(1)、竖屏(0) */ #define USE_LCD_BUF 1 /* 默认使用lcd_buf,使用lcd_buf刷屏速度会大幅度提升,牺牲空间提高速度,内存不够时,置0即可 */ #if USE_LCD_BUF #if SPI_LCD_TYPE uint16_t lcd_buf[320 * 240]; /* 存放一帧图像数据 */ #else uint16_t lcd_buf[240 * 240]; /* 存放一帧图像数据 */ #endif #endif /* LCD的画笔颜色和背景色 */ uint32_t g_point_color = 0XF800; /* 画笔颜色 */ uint32_t g_back_color = 0XFFFF; /* 背景色 */ static const int SPICLK = 80000000; /* SPI通信速率(屏幕显示异常,调低SPICLK) */ SPIClass* spi_lcd = NULL; /* 定义一个未初始化指向SPI对象的指针 */ /** * @brief 往LCD写命令 * @param cmd:命令 * @retval 无 */ static void lcd_write_cmd(uint8_t cmd) { LCD_WR(0); spi_lcd->transfer(cmd); } /** * @brief 往LCD写数据 * @param data:数据 * @retval 无 */ static void lcd_write_data(uint8_t data) { LCD_WR(1); spi_lcd->transfer(data); } /** * @brief 往LCD写指定数量的数据 * @param data:数据的起始地址 * @param size:发送数据大小 * @return 无 */ static void lcd_write_bytes(uint8_t *data, uint32_t size) { LCD_WR(1); spi_lcd->transfer(data, size); } /** * @brief 往LCD写像素数据 * @param data:像素数据 * @retval 无 */ static void lcd_write_pixeldata(uint16_t data) { LCD_WR(1); spi_lcd->transfer16(data); } /** * @brief 设置LCD行列地址 * @param xs: 列起始地址 * ys: 行起始地址 * xe: 列结束地址 * ye: 行结束地址 * @retval 无 */ void lcd_set_address(uint16_t xs, uint16_t ys, uint16_t xe, uint16_t ye) { lcd_write_cmd(0x2A); lcd_write_data((uint8_t)(xs >> 8) & 0xFF); lcd_write_data((uint8_t)xs & 0xFF); lcd_write_data((uint8_t)(xe >> 8) & 0xFF); lcd_write_data((uint8_t)xe & 0xFF); lcd_write_cmd(0x2B); lcd_write_data((uint8_t)(ys >> 8) & 0xFF); lcd_write_data((uint8_t)ys & 0xFF); lcd_write_data((uint8_t)(ye >> 8) & 0xFF); lcd_write_data((uint8_t)ye & 0xFF); lcd_write_cmd(0x2C); } /** * @brief 设置LCD的自动扫描方向 * @note 一般设置为L2R_U2D即可,如果设置为其他扫描方式,可能导致显示不正常. * @param dir:0~7,代表8个方向(具体定义见lcd.h) * @retval 无 */ void lcd_scan_dir(uint8_t dir) { uint16_t regval = 0; uint16_t dirreg = 0; uint16_t temp; if (spilcd_dir == 1) /* 横屏时，需改变扫描方向！ */ { switch (dir) /* 方向转换 */ { case 0: dir = 5; break; case 1: dir = 7; break; case 2: dir = 4; break; case 3: dir = 6; break; case 4: dir = 1; break; case 5: dir = 0; break; case 6: dir = 3; break; case 7: dir = 2; break; } } /* 根据扫描方式 设置 0x36 寄存器 bit 5,6,7 位的值 */ switch (dir) { case L2R_U2D:/* 从左到右,从上到下 */ regval |= (0 << 7) | (0 << 6) | (0 << 5); break; case L2R_D2U:/* 从左到右,从下到上 */ regval |= (1 << 7) | (0 << 6) | (0 << 5); break; case R2L_U2D:/* 从右到左,从上到下 */ regval |= (0 << 7) | (1 << 6) | (0 << 5); break; case R2L_D2U:/* 从右到左,从下到上 */ regval |= (1 << 7) | (1 << 6) | (0 << 5); break; case U2D_L2R:/* 从上到下,从左到右 */ regval |= (0 << 7) | (0 << 6) | (1 << 5); break; case U2D_R2L:/* 从上到下,从右到左 */ regval |= (0 << 7) | (1 << 6) | (1 << 5); break; case D2U_L2R:/* 从下到上,从左到右 */ regval |= (1 << 7) | (0 << 6) | (1 << 5); break; case D2U_R2L:/* 从下到上,从右到左 */ regval |= (1 << 7) | (1 << 6) | (1 << 5); break; } dirreg = 0x36; spi_lcd->beginTransaction(SPISettings(SPICLK, MSBFIRST, SPI_MODE3)); LCD_CS(0); lcd_write_cmd(dirreg); lcd_write_data(regval); if (regval & 0x20) { if (spilcd_width < spilcd_height) /* 交换X,Y */ { temp = spilcd_width; spilcd_width = spilcd_height; spilcd_height = temp; } } else { if (spilcd_width > spilcd_height) /* 交换X,Y */ { temp = spilcd_width; spilcd_width = spilcd_height; spilcd_height = temp; } } lcd_set_address(0, 0, spilcd_width - 1, spilcd_height - 1); LCD_CS(1); spi_lcd->endTransaction(); } /** * @brief 设置LCD显示方向 * @param dir:0,竖屏; 1,横屏 * @retval 无 */ void lcd_display_dir(uint8_t dir) { spilcd_dir = dir; if (SPI_LCD_TYPE) /* 2.4寸屏需要做处理，1.3寸屏不需要处理 */ { if (dir == 0) /* 竖屏 */ { spilcd_width = 240; spilcd_height = 320; } else /* 横屏 */ { spilcd_width = 320; spilcd_height = 240; } } lcd_scan_dir(DFT_SCAN_DIR); } /** * @brief 清屏函数 * @param color: 要清屏的颜色 * @retval 无 */ void lcd_clear(uint16_t color) { uint32_t index = 0; uint32_t totalpoint = spilcd_width * spilcd_height; spi_lcd->beginTransaction(SPISettings(SPICLK, MSBFIRST, SPI_MODE3)); LCD_CS(0); lcd_set_address(0, 0, spilcd_width - 1 ,spilcd_height - 1); LCD_WR(1); #if USE_LCD_BUF uint16_t color_tmp = ((color & 0x00FF) << 8) | ((color & 0xFF00) >> 8); /* 需要转换一下颜色值 */ for (uint32_t i = 0; i < spilcd_width * spilcd_height; i++) /* 对lcd_buf填满数据 */ { lcd_buf[i] = color_tmp; } spi_lcd->transfer(lcd_buf, spilcd_width * spilcd_height * 2); /* 发送一帧图像数据(单位:字节) */ #else for (index = 0; index < totalpoint; index++) { spi_lcd->transfer16(color); } #endif LCD_CS(1); spi_lcd->endTransaction(); } /**