显示图片函数：参数：（横坐标，纵坐标，图片像素大小长宽，图片数组指针）
1 /* 2 函数功能：显示图片 3 函数形参：x,y,width,height,*color_buff 4 */ 5 void lcd_dis_pic(u16 x, u16 y, u16 width, u16 height, u8 *color_buff) 6 { 7 u32 i = 0; 8 9 LCD_ILI9486_CMD(0x2A); //发送0x2A命令，设置X轴坐标 10 LCD_ILI9486_Parameter((x & 0xff00) >> 8); //发送X轴起始坐标的高8位 11 LCD_ILI9486_Parameter((x & 0x00ff)); //发送X轴起始坐标的低8位 12 LCD_ILI9486_Parameter(((x + width - 1) & 0xff00) >> 8); //发送X轴结束坐标的高8位 13 LCD_ILI9486_Parameter(((x + width - 1) & 0x00ff)); //发送X轴结束坐标的低8位 14 15 LCD_ILI9486_CMD(0x2B); //发送0x2B命令，设置Y轴坐标 16 LCD_ILI9486_Parameter((y & 0xff00) >> 8); //发送Y轴起始坐标的高8位 17 LCD_ILI9486_Parameter((y & 0x00ff)); //发送Y轴起始坐标的低8位 18 LCD_ILI9486_Parameter(((y + height - 1) & 0xff00) >> 8); //发送Y轴结束坐标的高8位 19 LCD_ILI9486_Parameter(((y + height - 1) & 0x00ff)); //发送Y轴结束坐标的低8位 20 21 LCD_ILI9486_CMD(0x2C); //发送0x2A命令，设置LCD显示颜色 22 for(i = 0; i < width * height; i++) //循环清屏区域的每一个像素点 23 { 24 LCD_ILI9486_Parameter((color_buff[2 * i] << 8) + color_buff[2 * i + 1]); 25 } 26 }
LCD初始化：
1 /******************** LCD引脚初始化函数 ******************* 2 LCD显示屏硬件管脚对应关系： 3 数据线： 4 DB0---PD14 DB1---PD15 DB2---PD0 DB3---PD1 5 DB4---PE7 DB5---PE8 DB6---PE9 DB7---PE10 6 DB8---PE11 DB9---PE12 DB10---PE13 DB11---PE14 7 DB12---PE15 DB13---PD8 DB14---PD9 DB15---PD10 8 控制线： 9 WR---PD5 RD---PD4 CS---PG12 RS---PF12 BL--PB15 10 **********************************************************/ 11 void LCD_Port_Init(void) 12 { 13 /* 使能LCD硬件管脚时钟 */ 14 RCC->AHB1ENR |= (1<<3);//开PD 15 RCC->AHB1ENR |= (1<<4);//开PE 16 RCC->AHB1ENR |= (1<<6);//开PG 17 RCC->AHB1ENR |= (1<<1);//开PB 18 RCC->AHB1ENR |= (1<<5);//开PF 19 20 21 /* 设置LCD硬件管脚模式 */ 22 /* DB0~DB15数据线：推挽输出 时钟50M */ 23 GPIOD->MODER |=(0X1<<(2*14))|(0X1<<(2*15)); //配置成通用输出 24 GPIOD->OSPEEDR |=(0X2<<(2*14))|(0X2ul<<(2*15)); //配置成输出速率50M 25 26 GPIOD->MODER |=(0X1<<(2*0))|(0X1<<(2*1)); //配置成通用输出 27 GPIOD->OSPEEDR |=(0X2<<(2*0))|(0X2<<(2*1)); //配置成输出速率50M 28 29 GPIOE->MODER |=0x55554000; //配置成通用输出 30 GPIOE->OTYPER |= 0; //配置成输出推挽 31 GPIOE->OSPEEDR |=0x55554000; //配置成输出速率50M 32 33 GPIOD->MODER |=(0X1<<(2*8))|(0X1<<(2*9))|(0X1<<(2*10)); //配置成通用输出 34 GPIOD->OSPEEDR |=(0X2<<(2*1))|(0X2<<(2*1))|(0X2<<(2*1)); //配置成输出速率50M 35 36 /* 控制线：推挽输出 时钟50M 空闲为高电平 */ 37 GPIOD->MODER |=(0X1<<(2*4))|(0X1<<(2*5)); //配置成通用输出 38 GPIOD->OSPEEDR |=(0X2<<(2*4))|(0X2<<(2*5)); 39 GPIOD->ODR |= (1<<4)|(1<<5); 40 41 GPIOG->MODER |=(0X1<<(2*12)); //配置成通用输出 42 GPIOG->OSPEEDR |=(0X2<<(2*12)); 43 GPIOG->ODR |= (1<<12); 44 45 GPIOF->MODER |=(0X1<<(2*12)); //配置成通用输出 46 GPIOF->OSPEEDR |=(0X2<<(2*12)); 47 GPIOF->ODR |= (1<<12); 48 49 GPIOB->MODER |=(0X1<<(2*15)); //配置成通用输出 50 GPIOB->OSPEEDR |=(0X2ul<<(2*15)); 51 GPIOB->ODR &= ~(1<<15); //关闭背光，在LCD初始化完后再打开 52 } 53 54 /******************* LCD写命令函数 ********************************* 55 参数：需要输入的命令 56 ********************************************************************/ 57 void LCD_ILI9486_CMD(u16 common) 58 { 59 GPIOG->ODR &= ~(1 << 12); //CS拉低 60 GPIOF->ODR &= ~(1 << 12); //D/C拉低 61 GPIOD->ODR &= ~(1 << 5); //WR拉低 62 //LCD_Output_Data(cmd); //输出命令数据 63 /* 把命令发送到数据总线 */ 64 if(common&0x01) GPIOD->BSRRL = (1<<14); else GPIOD->BSRRH = (1<<14); 65 if(common&0x02) GPIOD->BSRRL = (1<<15); else GPIOD->BSRRH = (1<<15); 66 if(common&0x04) GPIOD->BSRRL = (1<<0); else GPIOD->BSRRH = (1<<0); 67 if(common&0x08) GPIOD->BSRRL = (1<<1); else GPIOD->BSRRH = (1<<1); 68 if(common&0x10) GPIOE->BSRRL = (1<<7); else GPIOE->BSRRH = (1<<7); 69 if(common&0x20) GPIOE->BSRRL = (1<<8); else GPIOE->BSRRH = (1<<8); 70 if(common&0x40) GPIOE->BSRRL = (1<<9); else GPIOE->BSRRH = (1<<9); 71 if(common&0x80) GPIOE->BSRRL = (1<<10); else GPIOE->BSRRH = (1<<10); 72 if(common&0x0100) GPIOE->BSRRL = (1<<11); else GPIOE->BSRRH = (1<<11); 73 if(common&0x0200) GPIOE->BSRRL = (1<<12); else GPIOE->BSRRH = (1<<12); 74 if(common&0x0400) GPIOE->BSRRL = (1<<13); else GPIOE->BSRRH = (1<<13); 75 if(common&0x0800) GPIOE->BSRRL = (1<<14); else GPIOE->BSRRH = (1<<14); 76 if(common&0x1000) GPIOE->BSRRL = (1<<15); else GPIOE->BSRRH = (1<<15); 77 if(common&0x2000) GPIOD->BSRRL = (1<<8); else GPIOD->BSRRH = (1<<8); 78 if(common&0x4000) GPIOD->BSRRL = (1<<9); else GPIOD->BSRRH = (1<<9); 79 if(common&0x8000) GPIOD->BSRRL = (1<<10); else GPIOD->BSRRH = (1<<10); 80 GPIOD->ODR |= 1 << 5; //WR拉高 81 GPIOG->ODR |= 1 << 12; //拉高CS 82 } 83 84 /******************* LCD写数据函数 ********************************* 85 参数：需要输入的命令 86 ********************************************************************/ 87 void LCD_ILI9486_Parameter(u16 data) 88 { 89 GPIOG->ODR &= ~(1 << 12); //CS拉低 90 GPIOF->ODR |= 1 << 12; //D/C拉高 91 GPIOD->ODR &= ~(1 << 5); //WR拉低 92 //LCD_Output_Data(data); //输出命令数据 93 /* 把数据发送到数据总线 */ 94 if(data&0x01) GPIOD->BSRRL = (1<<14); else GPIOD->BSRRH = (1<<14); 95 if(data&0x02) GPIOD->BSRRL = (1<<15); else GPIOD->BSRRH = (1<<15); 96 if(data&0x04) GPIOD->BSRRL = (1<<0); else GPIOD->BSRRH = (1<<0); 97 if(data&0x08) GPIOD->BSRRL = (1<<1); else GPIOD->BSRRH = (1<<1); 98 if(data&0x10) GPIOE->BSRRL = (1<<7); else GPIOE->BSRRH = (1<<7); 99 if(data&0x20) GPIOE->BSRRL = (1<<8); else GPIOE->BSRRH = (1<<8); 100 if(data&0x40) GPIOE->BSRRL = (1<<9); else GPIOE->BSRRH = (1<<9); 101 if(data&0x80) GPIOE->BSRRL = (1<<10); else GPIOE->BSRRH = (1<<10); 102 if(data&0x0100) GPIOE->BSRRL = (1<<11); else GPIOE->BSRRH = (1<<11); 103 if(data&0x0200) GPIOE->BSRRL = (1<<12); else GPIOE->BSRRH = (1<<12); 104 if(data&0x0400) GPIOE->BSRRL = (1<<13); else GPIOE->BSRRH = (1<<13); 105 if(data&0x0800) GPIOE->BSRRL = (1<<14); else GPIOE->BSRRH = (1<<14); 106 if(data&0x1000) GPIOE->BSRRL = (1<<15); else GPIOE->BSRRH = (1<<15); 107 if(data&0x2000) GPIOD->BSRRL = (1<<8); else GPIOD->BSRRH = (1<<8); 108 if(data&0x4000) GPIOD->BSRRL = (1<<9); else GPIOD->BSRRH = (1<<9); 109 if(data&0x8000) GPIOD->BSRRL = (1<<10); else GPIOD->BSRRH = (1<<10); 110 GPIOD->ODR |= 1 << 5; //WR拉高 111 GPIOG->ODR |= 1 << 12; //拉高CS 112 } 113 114 /********************** LCD清屏函数 ****************************************** 115 参数： 116 SX、EX：X轴的起始坐标和结束坐标 117 SY、EY：Y轴的起始坐标和结束坐标 118 Color： 屏幕颜色 119 ******************************************************************************/ 120 void LCD_Clear(u16 SX, u16 EX, u16 SY, u16 EY, u16 Color) 121 { 122 u32 i; 123 124 LCD_ILI9486_CMD(0x2A); //发送0x2A命令，设置X轴坐标 125 LCD_ILI9486_Parameter((SX & 0xff00) >> 8); //发送X轴起始坐标的高8位 126 LCD_ILI9486_Parameter((SX & 0x00ff)); //发送X轴起始坐标的低8位 127 LCD_ILI9486_Parameter((EX & 0xff00) >> 8); //发送X轴结束坐标的高8位 128 LCD_ILI9486_Parameter((EX & 0x00ff)); //发送X轴结束坐标的低8位 129 130 LCD_ILI9486_CMD(0x2B); //发送0x2B命令，设置Y轴坐标 131 LCD_ILI9486_Parameter((SY & 0xff00) >> 8); //发送Y轴起始坐标的高8位 132 LCD_ILI9486_Parameter((SY & 0x00ff)); //发送Y轴起始坐标的低8位 133 LCD_ILI9486_Parameter((EY & 0xff00) >> 8); //发送Y轴结束坐标的高8位 134 LCD_ILI9486_Parameter((EY & 0x00ff)); //发送Y轴结束坐标的低8位 135 136 LCD_ILI9486_CMD(0x2C); //发送0x2A命令，设置LCD显示颜色 137 for(i = 0; i < (EX - SX + 1) * (EY - SY + 1); i++) //循环清屏区域的每一个像素点 138 { 139 LCD_ILI9486_Parameter(Color); 140 } 141 } 142 143 /********************** LCD初始化函数 *******************************************/ 144 void LCD_Init(void) 145 { 146 LCD_Port_Init(); 147 //************* Reset LCD Driver ****************// 148 systick_delay_ms(120); // Delay 120 ms 149 //************* Start Initial Sequence **********// 150 LCD_ILI9486_CMD(0XF2); 151 LCD_ILI9486_Parameter(0x18); 152 LCD_ILI9486_Parameter(0xA3); 153 LCD_ILI9486_Parameter(0x12); 154 LCD_ILI9486_Parameter(0x02); 155 LCD_ILI9486_Parameter(0XB2); 156 LCD_ILI9486_Parameter(0x12); 157 LCD_ILI9486_Parameter(0xFF); 158 LCD_ILI9486_Parameter(0x10); 159 LCD_ILI9486_Parameter(0x00); 160 LCD_ILI9486_CMD(0XF8); 161 LCD_ILI9486_Parameter(0x21); 162 LCD_ILI9486_Parameter(0x04); 163 LCD_ILI9486_CMD(0XF9); 164 LCD_ILI9486_Parameter(0x00); 165 LCD_ILI9486_Parameter(0x08); 166 LCD_ILI9486_CMD(0x36); 167 LCD_ILI9486_Parameter(0x08); //设置RGB,含排线的屏 168 // LCD_ILI9486_Parameter(0x00); //设置RGB，不含排线的屏BGR 169 LCD_ILI9486_CMD(0x3A); 170 LCD_ILI9486_Parameter(0x05); //设置16位BPP 171 LCD_ILI9486_CMD(0xB4); 172 LCD_ILI9486_Parameter(0x01);//0x00 173 LCD_ILI9486_CMD(0xB6); 174 LCD_ILI9486_Parameter(0x02); 175 LCD_ILI9486_Parameter(0x22); 176 LCD_ILI9486_CMD(0xC1); 177 LCD_ILI9486_Parameter(0x41); 178 LCD_ILI9486_CMD(0xC5); 179 LCD_ILI9486_Parameter(0x00); 180 LCD_ILI9486_Parameter(0x07);//0X18 181 LCD_ILI9486_CMD(0xE0); 182 LCD_ILI9486_Parameter(0x0F); 183 LCD_ILI9486_Parameter(0x1F); 184 LCD_ILI9486_Parameter(0x1C); 185 LCD_ILI9486_Parameter(0x0C); 186 LCD_ILI9486_Parameter(0x0F); 187 LCD_ILI9486_Parameter(0x08); 188 LCD_ILI9486_Parameter(0x48); 189 LCD_ILI9486_Parameter(0x98); 190 LCD_ILI9486_Parameter(0x37); 191 LCD_ILI9486_Parameter(0x0A); 192 LCD_ILI9486_Parameter(0x13); 193 LCD_ILI9486_Parameter(0x04); 194 LCD_ILI9486_Parameter(0x11); 195 LCD_ILI9486_Parameter(0x0D); 196 LCD_ILI9486_Parameter(0x00); 197 LCD_ILI9486_CMD(0xE1); 198 LCD_ILI9486_Parameter(0x0F); 199 LCD_ILI9486_Parameter(0x32); 200 LCD_ILI9486_Parameter(0x2E); 201 LCD_ILI9486_Parameter(0x0B); 202 LCD_ILI9486_Parameter(0x0D); 203 LCD_ILI9486_Parameter(0x05); 204 LCD_ILI9486_Parameter(0x47); 205 LCD_ILI9486_Parameter(0x75); 206 LCD_ILI9486_Parameter(0x37); 207 LCD_ILI9486_Parameter(0x06); 208 LCD_ILI9486_Parameter(0x10); 209 LCD_ILI9486_Parameter(0x03); 210 LCD_ILI9486_Parameter(0x24); 211 LCD_ILI9486_Parameter(0x20); 212 LCD_ILI9486_Parameter(0x00); 213 LCD_ILI9486_CMD(0x11); //退出睡眠 214 systick_delay_ms(120); 215 LCD_ILI9486_CMD(0x29); //开启显示 216 217 /* 以下由用户按实际编写 */ 218 LCD_Clear(0,319,0,479,0xffff); //把屏幕清成白色 219 GPIOB->ODR |= 1 << 15; //开LCD背光灯 220 }