3d9d6198c8
How To Run:
see TencentOS-tiny\board\ALPHA_I.MX_emmc_256ddr\README.md
TODO Next:
1. VFP support
2. fault diagnosis support
3. qemu vexpress ca9 support
4. raspberry pi support
5. SMP support
414 lines
13 KiB
C
414 lines
13 KiB
C
/***************************************************************
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Copyright © zuozhongkai Co., Ltd. 1998-2019. All rights reserved.
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文件名 : bsp_lcd.c
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作者 : 左忠凯
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版本 : V1.0
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描述 : LCD驱动文件。
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其他 : 无
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论坛 : www.openedv.com
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日志 : 初版V1.0 2019/1/3 左忠凯创建
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***************************************************************/
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#include "bsp_lcd.h"
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#include "bsp_gpio.h"
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#include "bsp_delay.h"
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#include "printf.h"
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/* 液晶屏参数结构体 */
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struct tftlcd_typedef tftlcd_dev;
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/*
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* @description : 始化LCD
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* @param : 无
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* @return : 无
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*/
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void lcd_init(void)
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{
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lcdgpio_init(); /* 初始化IO */
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lcdclk_init(32, 3, 5); /* 初始化LCD时钟 */
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lcd_reset(); /* 复位LCD */
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delayms(10); /* 延时10ms */
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lcd_noreset(); /* 结束复位 */
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/* TFTLCD参数结构体初始化 */
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tftlcd_dev.height = 600;
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tftlcd_dev.width = 1024;
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tftlcd_dev.pixsize = 4; /* ARGB8888模式，每个像素4字节 */
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tftlcd_dev.vspw = 3;
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tftlcd_dev.vbpd = 20;
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tftlcd_dev.vfpd = 12;
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tftlcd_dev.hspw = 20;
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tftlcd_dev.hbpd = 140;
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tftlcd_dev.hfpd = 160;
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tftlcd_dev.framebuffer = LCD_FRAMEBUF_ADDR;
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tftlcd_dev.backcolor = LCD_WHITE; /* 背景色为白色 */
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tftlcd_dev.forecolor = LCD_BLACK; /* 前景色为黑色 */
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/* 初始化ELCDIF的CTRL寄存器
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* bit [31] 0 : 停止复位
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* bit [19] 1 : 旁路计数器模式
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* bit [17] 1 : LCD工作在dotclk模式
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* bit [15:14] 00 : 输入数据不交换
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* bit [13:12] 00 : CSC不交换
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* bit [11:10] 11 : 24位总线宽度
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* bit [9:8] 11 : 24位数据宽度,也就是RGB888
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* bit [5] 1 : elcdif工作在主模式
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* bit [1] 0 : 所有的24位均有效
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*/
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LCDIF->CTRL |= (1 << 19) | (1 << 17) | (0 << 14) | (0 << 12) |
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(3 << 10) | (3 << 8) | (1 << 5) | (0 << 1);
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/*
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* 初始化ELCDIF的寄存器CTRL1
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* bit [19:16] : 0X7 ARGB模式下，传输24位数据，A通道不用传输
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*/
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LCDIF->CTRL1 = 0X7 << 16;
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/*
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* 初始化ELCDIF的寄存器TRANSFER_COUNT寄存器
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* bit [31:16] : 高度
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* bit [15:0] : 宽度
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*/
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LCDIF->TRANSFER_COUNT = (tftlcd_dev.height << 16) | (tftlcd_dev.width << 0);
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/*
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* 初始化ELCDIF的VDCTRL0寄存器
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* bit [29] 0 : VSYNC输出
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* bit [28] 1 : 使能ENABLE输出
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* bit [27] 0 : VSYNC低电平有效
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* bit [26] 0 : HSYNC低电平有效
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* bit [25] 0 : DOTCLK上升沿有效
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* bit [24] 1 : ENABLE信号高电平有效
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* bit [21] 1 : DOTCLK模式下设置为1
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* bit [20] 1 : DOTCLK模式下设置为1
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* bit [17:0] : vsw参数
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*/
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LCDIF->VDCTRL0 = 0; //先清零
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LCDIF->VDCTRL0 = (0 << 29) | (1 << 28) | (0 << 27) |
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(0 << 26) | (0 << 25) | (1 << 24) |
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(1 << 21) | (1 << 20) | (tftlcd_dev.vspw << 0);
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/*
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* 初始化ELCDIF的VDCTRL1寄存器
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* 设置VSYNC总周期
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*/
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LCDIF->VDCTRL1 = tftlcd_dev.height + tftlcd_dev.vspw + tftlcd_dev.vfpd + tftlcd_dev.vbpd; //VSYNC周期
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/*
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* 初始化ELCDIF的VDCTRL2寄存器
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* 设置HSYNC周期
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* bit[31:18] ：hsw
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* bit[17:0] : HSYNC总周期
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*/
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LCDIF->VDCTRL2 = (tftlcd_dev.hspw << 18) | (tftlcd_dev.width + tftlcd_dev.hspw + tftlcd_dev.hfpd + tftlcd_dev.hbpd);
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/*
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* 初始化ELCDIF的VDCTRL3寄存器
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* 设置HSYNC周期
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* bit[27:16] ：水平等待时钟数
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* bit[15:0] : 垂直等待时钟数
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*/
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LCDIF->VDCTRL3 = ((tftlcd_dev.hbpd + tftlcd_dev.hspw) << 16) | (tftlcd_dev.vbpd + tftlcd_dev.vspw);
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/*
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* 初始化ELCDIF的VDCTRL4寄存器
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* 设置HSYNC周期
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* bit[18] 1 : 当使用VSHYNC、HSYNC、DOTCLK的话此为置1
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* bit[17:0] : 宽度
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*/
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LCDIF->VDCTRL4 = (1<<18) | (tftlcd_dev.width);
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/*
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* 初始化ELCDIF的CUR_BUF和NEXT_BUF寄存器
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* 设置当前显存地址和下一帧的显存地址
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*/
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LCDIF->CUR_BUF = (unsigned int)tftlcd_dev.framebuffer;
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LCDIF->NEXT_BUF = (unsigned int)tftlcd_dev.framebuffer;
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lcd_enable(); /* 使能LCD */
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delayms(10);
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lcd_clear(LCD_WHITE); /* 清屏 */
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}
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/*
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* IO引脚: LCD_DATA00 -> LCD_B0
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* LCD_DATA01 -> LCD_B1
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* LCD_DATA02 -> LCD_B2
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* LCD_DATA03 -> LCD_B3
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* LCD_DATA04 -> LCD_B4
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* LCD_DATA05 -> LCD_B5
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* LCD_DATA06 -> LCD_B6
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* LCD_DATA07 -> LCD_B7
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*
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* LCD_DATA08 -> LCD_G0
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* LCD_DATA09 -> LCD_G1
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* LCD_DATA010 -> LCD_G2
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* LCD_DATA011 -> LCD_G3
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* LCD_DATA012 -> LCD_G4
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* LCD_DATA012 -> LCD_G4
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* LCD_DATA013 -> LCD_G5
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* LCD_DATA014 -> LCD_G6
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* LCD_DATA015 -> LCD_G7
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*
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* LCD_DATA016 -> LCD_R0
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* LCD_DATA017 -> LCD_R1
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* LCD_DATA018 -> LCD_R2
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* LCD_DATA019 -> LCD_R3
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* LCD_DATA020 -> LCD_R4
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* LCD_DATA021 -> LCD_R5
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* LCD_DATA022 -> LCD_R6
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* LCD_DATA023 -> LCD_R7
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*
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* LCD_CLK -> LCD_CLK
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* LCD_VSYNC -> LCD_VSYNC
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* LCD_HSYNC -> LCD_HSYNC
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* LCD_DE -> LCD_DE
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* LCD_BL -> GPIO1_IO08
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*/
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/*
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* @description : LCD GPIO初始化
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* @param : 无
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* @return : 无
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*/
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void lcdgpio_init(void)
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{
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gpio_pin_config_t gpio_config;
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/* 1、IO初始化复用功能 */
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA00_LCDIF_DATA00,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA01_LCDIF_DATA01,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA02_LCDIF_DATA02,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA03_LCDIF_DATA03,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA04_LCDIF_DATA04,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA05_LCDIF_DATA05,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA06_LCDIF_DATA06,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA07_LCDIF_DATA07,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA08_LCDIF_DATA08,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA09_LCDIF_DATA09,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA10_LCDIF_DATA10,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA11_LCDIF_DATA11,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA12_LCDIF_DATA12,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA13_LCDIF_DATA13,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA14_LCDIF_DATA14,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA15_LCDIF_DATA15,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA16_LCDIF_DATA16,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA17_LCDIF_DATA17,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA18_LCDIF_DATA18,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA19_LCDIF_DATA19,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA20_LCDIF_DATA20,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA21_LCDIF_DATA21,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA22_LCDIF_DATA22,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_DATA23_LCDIF_DATA23,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_CLK_LCDIF_CLK,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_ENABLE_LCDIF_ENABLE,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_HSYNC_LCDIF_HSYNC,0);
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IOMUXC_SetPinMux(IOMUXC_LCD_VSYNC_LCDIF_VSYNC,0);
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IOMUXC_SetPinMux(IOMUXC_GPIO1_IO08_GPIO1_IO08,0); /* 背光BL引脚 */
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/* 2、配置LCD IO属性
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*bit 16:0 HYS关闭
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*bit [15:14]: 0 默认22K上拉
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*bit [13]: 0 pull功能
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*bit [12]: 0 pull/keeper使能
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*bit [11]: 0 关闭开路输出
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*bit [7:6]: 10 速度100Mhz
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*bit [5:3]: 111 驱动能力为R0/7
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*bit [0]: 1 高转换率
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*/
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA00_LCDIF_DATA00,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA01_LCDIF_DATA01,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA02_LCDIF_DATA02,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA03_LCDIF_DATA03,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA04_LCDIF_DATA04,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA05_LCDIF_DATA05,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA06_LCDIF_DATA06,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA07_LCDIF_DATA07,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA08_LCDIF_DATA08,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA09_LCDIF_DATA09,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA10_LCDIF_DATA10,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA11_LCDIF_DATA11,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA12_LCDIF_DATA12,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA13_LCDIF_DATA13,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA14_LCDIF_DATA14,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA15_LCDIF_DATA15,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA16_LCDIF_DATA16,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA17_LCDIF_DATA17,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA18_LCDIF_DATA18,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA19_LCDIF_DATA19,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA20_LCDIF_DATA20,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA21_LCDIF_DATA21,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA22_LCDIF_DATA22,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_DATA23_LCDIF_DATA23,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_CLK_LCDIF_CLK,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_ENABLE_LCDIF_ENABLE,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_HSYNC_LCDIF_HSYNC,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_LCD_VSYNC_LCDIF_VSYNC,0xB9);
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IOMUXC_SetPinConfig(IOMUXC_GPIO1_IO08_GPIO1_IO08,0xB9); /* 背光BL引脚 */
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/* GPIO初始化 */
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gpio_config.direction = kGPIO_DigitalOutput; /* 输出 */
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gpio_config.outputLogic = 1; /* 默认关闭背光 */
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gpio_init(GPIO1, 8, &gpio_config); /* 背光默认打开 */
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gpio_pinwrite(GPIO1, 8, 1); /* 打开背光 */
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}
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/*
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* @description : LCD时钟初始化, LCD时钟计算公式如下：
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* LCD CLK = 24 * loopDiv / prediv / div
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* @param - loopDiv : loopDivider值
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* @param - loopDiv : lcdifprediv值
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* @param - div : lcdifdiv值
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* @return : 无
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*/
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void lcdclk_init(unsigned char loopDiv, unsigned char prediv, unsigned char div)
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{
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/* 先初始化video pll
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* VIDEO PLL = OSC24M * (loopDivider + (denominator / numerator)) / postDivider
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*不使用小数分频器，因此denominator和numerator设置为0
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*/
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CCM_ANALOG->PLL_VIDEO_NUM = 0; /* 不使用小数分频器 */
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CCM_ANALOG->PLL_VIDEO_DENOM = 0;
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/*
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* PLL_VIDEO寄存器设置
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* bit[13]: 1 使能VIDEO PLL时钟
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* bit[20:19] 2 设置postDivider为1分频
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* bit[6:0] : 32 设置loopDivider寄存器
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*/
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CCM_ANALOG->PLL_VIDEO = (2 << 19) | (1 << 13) | (loopDiv << 0);
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/*
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* MISC2寄存器设置
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* bit[31:30]: 0 VIDEO的post-div设置，时钟源来源于postDivider，1分频
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*/
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CCM_ANALOG->MISC2 &= ~(3 << 30);
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CCM_ANALOG->MISC2 = 0 << 30;
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/* LCD时钟源来源与PLL5，也就是VIDEO PLL */
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CCM->CSCDR2 &= ~(7 << 15);
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CCM->CSCDR2 |= (2 << 15); /* 设置LCDIF_PRE_CLK使用PLL5 */
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/* 设置LCDIF_PRE分频 */
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CCM->CSCDR2 &= ~(7 << 12);
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CCM->CSCDR2 |= (prediv - 1) << 12; /* 设置分频 */
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/* 设置LCDIF分频 */
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CCM->CBCMR &= ~(7 << 23);
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CCM->CBCMR |= (div - 1) << 23;
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/* 设置LCD时钟源为LCDIF_PRE时钟 */
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CCM->CSCDR2 &= ~(7 << 9); /* 清除原来的设置 */
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CCM->CSCDR2 |= (0 << 9); /* LCDIF_PRE时钟源选择LCDIF_PRE时钟 */
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}
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/*
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* @description : 复位ELCDIF接口
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* @param : 无
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* @return : 无
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*/
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void lcd_reset(void)
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{
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LCDIF->CTRL = 1<<31; /* 强制复位 */
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}
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/*
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* @description : 结束复位ELCDIF接口
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* @param : 无
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* @return : 无
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*/
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void lcd_noreset(void)
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{
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LCDIF->CTRL = 0<<31; /* 取消强制复位 */
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}
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/*
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* @description : 使能ELCDIF接口
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* @param : 无
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* @return : 无
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*/
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void lcd_enable(void)
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{
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LCDIF->CTRL |= 1<<0; /* 使能ELCDIF */
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}
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/*
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* @description : 画点函数
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* @param - x : x轴坐标
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* @param - y : y轴坐标
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* @param - color : 颜色值
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* @return : 无
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*/
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void lcd_drawpoint(unsigned short x,unsigned short y,unsigned int color)
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{
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*(unsigned int*)((unsigned int)tftlcd_dev.framebuffer +
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tftlcd_dev.pixsize * (tftlcd_dev.width * y+x))=color;
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}
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/*
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* @description : 读取指定点的颜色值
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* @param - x : x轴坐标
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* @param - y : y轴坐标
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* @return : 读取到的指定点的颜色值
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*/
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inline unsigned int lcd_readpoint(unsigned short x,unsigned short y)
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{
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return *(unsigned int*)((unsigned int)tftlcd_dev.framebuffer +
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tftlcd_dev.pixsize * (tftlcd_dev.width * y + x));
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}
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/*
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* @description : 清屏
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* @param - color : 颜色值
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* @return : 读取到的指定点的颜色值
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*/
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void lcd_clear(unsigned int color)
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{
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unsigned int num;
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unsigned int i = 0;
|
||
|
||
unsigned int *startaddr=(unsigned int*)tftlcd_dev.framebuffer; //指向帧缓存首地址
|
||
num=(unsigned int)tftlcd_dev.width * tftlcd_dev.height; //缓冲区总长度
|
||
for(i = 0; i < num; i++)
|
||
{
|
||
startaddr[i] = color;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* @description : 以指定的颜色填充一块矩形
|
||
* @param - x0 : 矩形起始点坐标X轴
|
||
* @param - y0 : 矩形起始点坐标Y轴
|
||
* @param - x1 : 矩形终止点坐标X轴
|
||
* @param - y1 : 矩形终止点坐标Y轴
|
||
* @param - color : 要填充的颜色
|
||
* @return : 读取到的指定点的颜色值
|
||
*/
|
||
void lcd_fill(unsigned short x0, unsigned short y0,
|
||
unsigned short x1, unsigned short y1, unsigned int color)
|
||
{
|
||
unsigned short x, y;
|
||
|
||
if(x0 < 0) x0 = 0;
|
||
if(y0 < 0) y0 = 0;
|
||
if(x1 >= tftlcd_dev.width) x1 = tftlcd_dev.width - 1;
|
||
if(y1 >= tftlcd_dev.height) y1 = tftlcd_dev.height - 1;
|
||
|
||
for(y = y0; y <= y1; y++)
|
||
{
|
||
for(x = x0; x <= x1; x++)
|
||
lcd_drawpoint(x, y, color);
|
||
}
|
||
}
|
||
|