#include "sys.h" #include "lcd.h" #include "font.h" #include "spi3.h" #include "alientek_log.h" /********************************************************************************* ___ _ _____ _____ _ _ _____ _____ _ __ / _ \ | | |_ _|| ___|| \ | ||_ _|| ___|| | / / / /_\ \| | | | | |__ | \| | | | | |__ | |/ / | _ || | | | | __| | . ` | | | | __| | \ | | | || |_____| |_ | |___ | |\ | | | | |___ | |\ \ \_| |_/\_____/\___/ \____/ \_| \_/ \_/ \____/ \_| \_/ * ****************************************************************************** * 本程序只供学习使用，未经作者许可，不得用于其它任何用途 * ALIENTEK Pandora STM32L475 IOT开发板 * LCD TFT驱动代码 * 正点原子@ALIENTEK * 技术论坛:www.openedv.com * 创建日期:2018/10/27 * 版本：V1.0 * 版权所有，盗版必究。 * Copyright(C) 广州市星翼电子科技有限公司 2014-2024 * All rights reserved * ****************************************************************************** * 初始版本 * ******************************************************************************/ //LCD缓存大小设置，修改此值时请注意！！！！修改这两个值时可能会影响以下函数 LCD_Clear/LCD_Fill/LCD_DrawLine #define LCD_TOTAL_BUF_SIZE (240*240*2) #define LCD_Buf_Size 1152 static u8 lcd_buf[LCD_Buf_Size]; u16 POINT_COLOR = BLACK; //画笔颜色 默认为黑色 u16 BACK_COLOR = WHITE; //背景颜色 默认为白色 /** * @brief LCD控制接口初始化 * * @param void * * @return void */ static void LCD_Gpio_Init(void) { GPIO_InitTypeDef GPIO_InitStruct; __HAL_RCC_GPIOB_CLK_ENABLE(); __HAL_RCC_GPIOD_CLK_ENABLE(); /* LCD_PWR: PB7 LCD_RST: PB6 LCD_DC: PB4 LCD_CS: PD7 */ GPIO_InitStruct.Pin = GPIO_PIN_4 | GPIO_PIN_6 | GPIO_PIN_7; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_PULLUP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); HAL_GPIO_WritePin(GPIOB, GPIO_PIN_4 | GPIO_PIN_6 | GPIO_PIN_7, GPIO_PIN_RESET); GPIO_InitStruct.Pin = GPIO_PIN_7; HAL_GPIO_Init(GPIOD, &GPIO_InitStruct); HAL_GPIO_WritePin(GPIOD, GPIO_PIN_7, GPIO_PIN_RESET); LCD_CS(0); LCD_PWR(0); LCD_RST(0); HAL_Delay(120); LCD_RST(1); SPI3_Init(); //初始化SPI3接口 } /** * @brief LCD底层SPI发送数据函数 * * @param data 数据的起始地址 * @param size 发送数据大小 * * @return void */ static void LCD_SPI_Send(u8 *data, u32 size) { u32 i; u32 delta; delta = size/0xFFFF; for(i = 0; i<=delta; i++) { if( i==delta ) /* 发送最后一帧数据 */ SPI3_WriteByte(&data[i*0xFFFF], size%0xFFFF); else /* 超长数据一次发送0xFFFF字节数据 */ SPI3_WriteByte(&data[i*0xFFFF], 0xFFFF); } } /** * @brief 写命令到LCD * * @param cmd 需要发送的命令 * * @return void */ static void LCD_Write_Cmd(u8 cmd) { LCD_DC(0); LCD_SPI_Send(&cmd, 1); } /** * @brief 写数据到LCD * * @param cmd 需要发送的数据 * * @return void */ static void LCD_Write_Data(u8 data) { LCD_DC(1); LCD_SPI_Send(&data, 1); } /** * @brief 写半个字的数据到LCD * * @param cmd 需要发送的数据 * * @return void */ void LCD_Write_HalfWord(const u16 da) { u8 data[2] = {0}; data[0] = da >> 8; data[1] = da; LCD_DC(1); LCD_SPI_Send(data, 2); } /** * 设置数据写入LCD缓存区域 * * @param x1,y1 起点坐标 * @param x2,y2 终点坐标 * * @return void */ void LCD_Address_Set(u16 x1, u16 y1, u16 x2, u16 y2) { LCD_Write_Cmd(0x2a); LCD_Write_Data(x1 >> 8); LCD_Write_Data(x1); LCD_Write_Data(x2 >> 8); LCD_Write_Data(x2); LCD_Write_Cmd(0x2b); LCD_Write_Data(y1 >> 8); LCD_Write_Data(y1); LCD_Write_Data(y2 >> 8); LCD_Write_Data(y2); LCD_Write_Cmd(0x2C); } /** * 打开LCD显示 * * @param void * * @return void */ void LCD_DisplayOn(void) { LCD_PWR(1); } /** * 关闭LCD显示 * * @param void * * @return void */ void LCD_DisplayOff(void) { LCD_PWR(0); } /** * 以一种颜色清空LCD屏 * * @param color 清屏颜色 * * @return void */ void LCD_Clear(u16 color) { u16 i, j; u8 data[2] = {0}; data[0] = color >> 8; data[1] = color; LCD_Address_Set(0, 0, LCD_Width - 1, LCD_Height - 1); for(j = 0; j < LCD_Buf_Size / 2; j++) { lcd_buf[j * 2] = data[0]; lcd_buf[j * 2 + 1] = data[1]; } LCD_DC(1); for(i = 0; i < (LCD_TOTAL_BUF_SIZE / LCD_Buf_Size); i++) { LCD_SPI_Send(lcd_buf, LCD_Buf_Size); } } /** * 用一个颜色填充整个区域 * * @param x_start,y_start 起点坐标 * @param x_end,y_end 终点坐标 * @param color 填充颜色 * * @return void */ void LCD_Fill(u16 x_start, u16 y_start, u16 x_end, u16 y_end, u16 color) { u16 i = 0; u32 size = 0, size_remain = 0; size = (x_end - x_start + 1) * (y_end - y_start + 1) * 2; if(size > LCD_Buf_Size) { size_remain = size - LCD_Buf_Size; size = LCD_Buf_Size; } LCD_Address_Set(x_start, y_start, x_end, y_end); while(1) { for(i = 0; i < size / 2; i++) { lcd_buf[2 * i] = color >> 8; lcd_buf[2 * i + 1] = color; } LCD_DC(1); LCD_SPI_Send(lcd_buf, size); if(size_remain == 0) break; if(size_remain > LCD_Buf_Size) { size_remain = size_remain - LCD_Buf_Size; } else { size = size_remain; size_remain = 0; } } } /** * 用颜色缓冲区填充区域 * * @param x_start,y_start 起点坐标 * @param x_end,y_end 终点坐标 * @param clr_buf 颜色缓冲区 * * @return void */ void LCD_Fill_Buf(u16 x_start, u16 y_start, u16 x_end, u16 y_end, u16* clr_buf) { u16 i = 0; u32 size = 0, size_remain = 0; size = (x_end - x_start + 1) * (y_end - y_start + 1) * 2; if(size > LCD_Buf_Size) { size_remain = size - LCD_Buf_Size; size = LCD_Buf_Size; } LCD_Address_Set(x_start, y_start, x_end, y_end); while(1) { for(i = 0; i < size / 2; i++) { lcd_buf[2 * i] = clr_buf[i] >> 8; lcd_buf[2 * i + 1] = clr_buf[i]; } LCD_DC(1); LCD_SPI_Send(lcd_buf, size); if(size_remain == 0) break; if(size_remain > LCD_Buf_Size) { size_remain = size_remain - LCD_Buf_Size; } else { size = size_remain; size_remain = 0; } } } /** * 画点函数 * * @param x,y 画点坐标 * * @return void */ void LCD_Draw_Point(u16 x, u16 y) { LCD_Address_Set(x, y, x, y); LCD_Write_HalfWord(POINT_COLOR); } /** * 画点带颜色函数 * * @param x,y 画点坐标 * * @return void */ void LCD_Draw_ColorPoint(u16 x, u16 y,u16 color) { LCD_Address_Set(x, y, x, y); LCD_Write_HalfWord(color); } /** * @brief 画线函数(直线、斜线) * * @param x1,y1 起点坐标 * @param x2,y2 终点坐标 * * @return void */ void LCD_DrawLine(u16 x1, u16 y1, u16 x2, u16 y2) { u16 t; int xerr = 0, yerr = 0, delta_x, delta_y, distance; int incx, incy, row, col; u32 i = 0; if(y1 == y2) { /*快速画水平线*/ LCD_Address_Set(x1, y1, x2, y2); for(i = 0; i < x2 - x1; i++) { lcd_buf[2 * i] = POINT_COLOR >> 8; lcd_buf[2 * i + 1] = POINT_COLOR; } LCD_DC(1); LCD_SPI_Send(lcd_buf, (x2 - x1) * 2); return; } delta_x = x2 - x1; delta_y = y2 - y1; row = x1; col = y1; if(delta_x > 0)incx = 1; else if(delta_x == 0)incx = 0; else { incx = -1; delta_x = -delta_x; } if(delta_y > 0)incy = 1; else if(delta_y == 0)incy = 0; else { incy = -1; delta_y = -delta_y; } if(delta_x > delta_y)distance = delta_x; else distance = delta_y; for(t = 0; t <= distance + 1; t++) { LCD_Draw_Point(row, col); xerr += delta_x ; yerr += delta_y ; if(xerr > distance) { xerr -= distance; row += incx; } if(yerr > distance) { yerr -= distance; col += incy; } } } /** * @brief 画一个矩形 * * @param x1,y1 起点坐标 * @param x2,y2 终点坐标 * * @return void */ void LCD_DrawRectangle(u16 x1, u16 y1, u16 x2, u16 y2) { LCD_DrawLine(x1, y1, x2, y1); LCD_DrawLine(x1, y1, x1, y2); LCD_DrawLine(x1, y2, x2, y2); LCD_DrawLine(x2, y1, x2, y2); } /** * @brief 画一个圆 * * @param x0,y0 圆心坐标 * @param r 圆半径 * * @return void */ void LCD_Draw_Circle(u16 x0, u16 y0, u8 r) { int a, b; int di; a = 0; b = r; di = 3 - (r << 1); while(a <= b) { LCD_Draw_Point(x0 - b, y0 - a); LCD_Draw_Point(x0 + b, y0 - a); LCD_Draw_Point(x0 - a, y0 + b); LCD_Draw_Point(x0 - b, y0 - a); LCD_Draw_Point(x0 - a, y0 - b); LCD_Draw_Point(x0 + b, y0 + a); LCD_Draw_Point(x0 + a, y0 - b); LCD_Draw_Point(x0 + a, y0 + b); LCD_Draw_Point(x0 - b, y0 + a); a++; if(di < 0)di += 4 * a + 6; else { di += 10 + 4 * (a - b); b--; } LCD_Draw_Point(x0 + a, y0 + b); } } /** * @brief 显示一个ASCII码字符 * * @param x,y 显示起始坐标 * @param chr 需要显示的字符 * @param size 字体大小(支持16/24/32号字体) * * @return void */ void LCD_ShowChar(u16 x, u16 y, char chr, u8 size) { u8 temp, t1, t; u8 csize; //得到字体一个字符对应点阵集所占的字节数 u16 colortemp; u8 sta; chr = chr - ' '; //得到偏移后的值（ASCII字库是从空格开始取模，所以-' '就是对应字符的字库） if((x > (LCD_Width - size / 2)) || (y > (LCD_Height - size))) return; LCD_Address_Set(x, y, x + size / 2 - 1, y + size - 1);//(x,y,x+8-1,y+16-1) if((size == 16) || (size == 32) ) //16和32号字体 { csize = (size / 8 + ((size % 8) ? 1 : 0)) * (size / 2); for(t = 0; t < csize; t++) { if(size == 16)temp = asc2_1608[chr][t]; //调用1608字体 else if(size == 32)temp = asc2_3216[chr][t]; //调用3216字体 else return; //没有的字库 for(t1 = 0; t1 < 8; t1++) { if(temp & 0x80) colortemp = POINT_COLOR; else colortemp = BACK_COLOR; LCD_Write_HalfWord(colortemp); temp <<= 1; } } } else if (size == 12) //12号字体 { csize = (size / 8 + ((size % 8) ? 1 : 0)) * (size / 2); for(t = 0; t < csize; t++) { temp = asc2_1206[chr][t]; for(t1 = 0; t1 < 6; t1++) { if(temp & 0x80) colortemp = POINT_COLOR; else colortemp = BACK_COLOR; LCD_Write_HalfWord(colortemp); temp <<= 1; } } } else if(size == 24) //24号字体 { csize = (size * 16) / 8; for(t = 0; t < csize; t++) { temp = asc2_2412[chr][t]; if(t % 2 == 0)sta = 8; else sta = 4; for(t1 = 0; t1 < sta; t1++) { if(temp & 0x80) colortemp = POINT_COLOR; else colortemp = BACK_COLOR; LCD_Write_HalfWord(colortemp); temp <<= 1; } } } } /** * @brief m^n函数 * * @param m,n 输入参数 * * @return m^n次方 */ static u32 LCD_Pow(u8 m, u8 n) { u32 result = 1; while(n--)result *= m; return result; } /** * @brief 显示数字,高位为0不显示 * * @param x,y 起点坐标 * @param num 需要显示的数字,数字范围(0~4294967295) * @param len 需要显示的位数 * @param size 字体大小 * * @return void */ void LCD_ShowNum(u16 x, u16 y, u32 num, u8 len, u8 size) { u8 t, temp; u8 enshow = 0; for(t = 0; t < len; t++) { temp = (num / LCD_Pow(10, len - t - 1)) % 10; if(enshow == 0 && t < (len - 1)) { if(temp == 0) { LCD_ShowChar(x + (size / 2)*t, y, ' ', size); continue; } else enshow = 1; } LCD_ShowChar(x + (size / 2)*t, y, temp + '0', size); } } /** * @brief 显示数字,高位为0,可以控制显示为0还是不显示 * * @param x,y 起点坐标 * @param num 需要显示的数字,数字范围(0~999999999) * @param len 需要显示的位数 * @param size 字体大小 * @param mode 1:高位显示0 0:高位不显示 * * @return void */ void LCD_ShowxNum(u16 x, u16 y, u32 num, u8 len, u8 size, u8 mode) { u8 t, temp; u8 enshow = 0; for(t = 0; t < len; t++) { temp = (num / LCD_Pow(10, len - t - 1)) % 10; if(enshow == 0 && t < (len - 1)) { if(temp == 0) { if(mode)LCD_ShowChar(x + (size / 2)*t, y, '0', size); else LCD_ShowChar(x + (size / 2)*t, y, ' ', size); continue; } else enshow = 1; } LCD_ShowChar(x + (size / 2)*t, y, temp + '0', size); } } /** * @brief 显示字符串 * * @param x,y 起点坐标 * @param width 字符显示区域宽度 * @param height 字符显示区域高度 * @param size 字体大小 * @param p 字符串起始地址 * * @return void */ void LCD_ShowString(u16 x, u16 y, u16 width, u16 height, u8 size, char *p) { u8 x0 = x; width += x; height += y; while((*p <= '~') && (*p >= ' ')) //判断是不是非法字符! { if(x >= width) { x = x0; y += size; } if(y >= height)break; //退出 LCD_ShowChar(x, y, *p, size); x += size / 2; p++; } } /** * @brief 显示图片 * * @remark Image2Lcd取模方式： C语言数据/水平扫描/16位真彩色(RGB565)/高位在前 其他的不要选 * * @param x,y 起点坐标 * @param width 图片宽度 * @param height 图片高度 * @param p 图片缓存数据起始地址 * * @return void */ void LCD_Show_Image(u16 x, u16 y, u16 width, u16 height, const u8 *p) { if(x + width > LCD_Width || y + height > LCD_Height) { return; } LCD_Address_Set(x, y, x + width - 1, y + height - 1); LCD_DC(1); LCD_SPI_Send((u8 *)p, width * height * 2); } /** * @brief LCD初始化 * * @param x,y 显示坐标 * * @return void */ void Display_ALIENTEK_LOGO(u16 x, u16 y) { LCD_Show_Image(x, y, 240, 82, ALIENTEK_LOGO); } /** * @brief LCD初始化 * * @param void * * @return void */ void LCD_Init(void) { LCD_Gpio_Init(); //硬件接口初始化 HAL_Delay(120); /* Sleep Out */ LCD_Write_Cmd(0x11); /* wait for power stability */ HAL_Delay(120); /* Memory Data Access Control */ LCD_Write_Cmd(0x36); LCD_Write_Data(0x00); /* RGB 5-6-5-bit */ LCD_Write_Cmd(0x3A); LCD_Write_Data(0x65); /* Porch Setting */ LCD_Write_Cmd(0xB2); LCD_Write_Data(0x0C); LCD_Write_Data(0x0C); LCD_Write_Data(0x00); LCD_Write_Data(0x33); LCD_Write_Data(0x33); /* Gate Control */ LCD_Write_Cmd(0xB7); LCD_Write_Data(0x72); /* VCOM Setting */ LCD_Write_Cmd(0xBB); LCD_Write_Data(0x3D); //Vcom=1.625V /* LCM Control */ LCD_Write_Cmd(0xC0); LCD_Write_Data(0x2C); /* VDV and VRH Command Enable */ LCD_Write_Cmd(0xC2); LCD_Write_Data(0x01); /* VRH Set */ LCD_Write_Cmd(0xC3); LCD_Write_Data(0x19); /* VDV Set */ LCD_Write_Cmd(0xC4); LCD_Write_Data(0x20); /* Frame Rate Control in Normal Mode */ LCD_Write_Cmd(0xC6); LCD_Write_Data(0x0F); //60MHZ /* Power Control 1 */ LCD_Write_Cmd(0xD0); LCD_Write_Data(0xA4); LCD_Write_Data(0xA1); /* Positive Voltage Gamma Control */ LCD_Write_Cmd(0xE0); LCD_Write_Data(0xD0); LCD_Write_Data(0x04); LCD_Write_Data(0x0D); LCD_Write_Data(0x11); LCD_Write_Data(0x13); LCD_Write_Data(0x2B); LCD_Write_Data(0x3F); LCD_Write_Data(0x54); LCD_Write_Data(0x4C); LCD_Write_Data(0x18); LCD_Write_Data(0x0D); LCD_Write_Data(0x0B); LCD_Write_Data(0x1F); LCD_Write_Data(0x23); /* Negative Voltage Gamma Control */ LCD_Write_Cmd(0xE1); LCD_Write_Data(0xD0); LCD_Write_Data(0x04); LCD_Write_Data(0x0C); LCD_Write_Data(0x11); LCD_Write_Data(0x13); LCD_Write_Data(0x2C); LCD_Write_Data(0x3F); LCD_Write_Data(0x44); LCD_Write_Data(0x51); LCD_Write_Data(0x2F); LCD_Write_Data(0x1F); LCD_Write_Data(0x1F); LCD_Write_Data(0x20); LCD_Write_Data(0x23); /* Display Inversion On */ LCD_Write_Cmd(0x21); LCD_Write_Cmd(0x29); LCD_Address_Set(0, 0, LCD_Width - 1, LCD_Height - 1); LCD_Clear(WHITE); /*打开显示*/ LCD_PWR(1); }