/* * Copyright (c) 2006-2018, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2020-04-12 Jonne first version from 4.3 inch lcd(480x272) */ #include #include /* LCD driver for N3'5 */ #define LCD_WIDTH 480 #define LCD_HEIGHT 272 #define LCD_PIXCLOCK 4 #define LCD_RIGHT_MARGIN 2 #define LCD_LEFT_MARGIN 2 #define LCD_HSYNC_LEN 41 #define LCD_UPPER_MARGIN 2 #define LCD_LOWER_MARGIN 2 #define LCD_VSYNC_LEN 10 #define LCD_XSIZE LCD_WIDTH #define LCD_YSIZE LCD_HEIGHT #define SCR_XSIZE LCD_WIDTH #define SCR_YSIZE LCD_HEIGHT #define RT_HW_LCD_WIDTH LCD_WIDTH #define RT_HW_LCD_HEIGHT LCD_HEIGHT #define MVAL (13) #define MVAL_USED (0) //0=each frame 1=rate by MVAL #define INVVDEN (1) //0=normal 1=inverted #define BSWP (0) //Byte swap control #define HWSWP (1) //Half word swap control #define GPB1_TO_OUT() (GPBUP &= 0xfffd, GPBCON &= 0xfffffff3, GPBCON |= 0x00000004) #define GPB1_TO_1() (GPBDAT |= 0x0002) #define GPB1_TO_0() (GPBDAT &= 0xfffd) #define S3C2410_LCDCON1_CLKVAL(x) ((x) << 8) #define S3C2410_LCDCON1_MMODE (1<<7) #define S3C2410_LCDCON1_DSCAN4 (0<<5) #define S3C2410_LCDCON1_STN4 (1<<5) #define S3C2410_LCDCON1_STN8 (2<<5) #define S3C2410_LCDCON1_TFT (3<<5) #define S3C2410_LCDCON1_STN1BPP (0<<1) #define S3C2410_LCDCON1_STN2GREY (1<<1) #define S3C2410_LCDCON1_STN4GREY (2<<1) #define S3C2410_LCDCON1_STN8BPP (3<<1) #define S3C2410_LCDCON1_STN12BPP (4<<1) #define S3C2410_LCDCON1_TFT1BPP (8<<1) #define S3C2410_LCDCON1_TFT2BPP (9<<1) #define S3C2410_LCDCON1_TFT4BPP (10<<1) #define S3C2410_LCDCON1_TFT8BPP (11<<1) #define S3C2410_LCDCON1_TFT16BPP (12<<1) #define S3C2410_LCDCON1_TFT24BPP (13<<1) #define S3C2410_LCDCON1_ENVID (1) #define S3C2410_LCDCON1_MODEMASK 0x1E #define S3C2410_LCDCON2_VBPD(x) ((x) << 24) #define S3C2410_LCDCON2_LINEVAL(x) ((x) << 14) #define S3C2410_LCDCON2_VFPD(x) ((x) << 6) #define S3C2410_LCDCON2_VSPW(x) ((x) << 0) #define S3C2410_LCDCON2_GET_VBPD(x) ( ((x) >> 24) & 0xFF) #define S3C2410_LCDCON2_GET_VFPD(x) ( ((x) >> 6) & 0xFF) #define S3C2410_LCDCON2_GET_VSPW(x) ( ((x) >> 0) & 0x3F) #define S3C2410_LCDCON3_HBPD(x) ((x) << 19) #define S3C2410_LCDCON3_WDLY(x) ((x) << 19) #define S3C2410_LCDCON3_HOZVAL(x) ((x) << 8) #define S3C2410_LCDCON3_HFPD(x) ((x) << 0) #define S3C2410_LCDCON3_LINEBLANK(x)((x) << 0) #define S3C2410_LCDCON3_GET_HBPD(x) ( ((x) >> 19) & 0x7F) #define S3C2410_LCDCON3_GET_HFPD(x) ( ((x) >> 0) & 0xFF) #define S3C2410_LCDCON4_MVAL(x) ((x) << 8) #define S3C2410_LCDCON4_HSPW(x) ((x) << 0) #define S3C2410_LCDCON4_WLH(x) ((x) << 0) #define S3C2410_LCDCON4_GET_HSPW(x) ( ((x) >> 0) & 0xFF) #define S3C2410_LCDCON5_BPP24BL (1<<12) #define S3C2410_LCDCON5_FRM565 (1<<11) #define S3C2410_LCDCON5_INVVCLK (1<<10) #define S3C2410_LCDCON5_INVVLINE (1<<9) #define S3C2410_LCDCON5_INVVFRAME (1<<8) #define S3C2410_LCDCON5_INVVD (1<<7) #define S3C2410_LCDCON5_INVVDEN (1<<6) #define S3C2410_LCDCON5_INVPWREN (1<<5) #define S3C2410_LCDCON5_INVLEND (1<<4) #define S3C2410_LCDCON5_PWREN (1<<3) #define S3C2410_LCDCON5_ENLEND (1<<2) #define S3C2410_LCDCON5_BSWP (1<<1) #define S3C2410_LCDCON5_HWSWP (1<<0) #define S3C2410_LCDINT_FRSYNC (1<<1) static volatile rt_uint16_t _rt_framebuffer[RT_HW_LCD_HEIGHT][RT_HW_LCD_WIDTH]; //static volatile rt_uint16_t _rt_hw_framebuffer[RT_HW_LCD_HEIGHT][RT_HW_LCD_WIDTH]; static struct rt_device_graphic_info _lcd_info; static void lcd_power_enable(int invpwren, int pwren) { //GPG4 is setted as LCD_PWREN GPGUP = GPGUP | (1<<4); // Pull-up disable GPGCON = GPGCON | (3<<8); //GPG4=LCD_PWREN //Enable LCD POWER ENABLE Function LCDCON5 = LCDCON5&(~(1<<3))|(pwren<<3); // PWREN LCDCON5 = LCDCON5&(~(1<<5))|(invpwren<<5); // INVPWREN } static void lcd_envid_on_off(int onoff) { if(onoff==1) /*ENVID=ON*/ LCDCON1|=1; else /*ENVID Off*/ LCDCON1 =LCDCON1 & 0x3fffe; } //********************** BOARD LCD backlight **************************** static void LcdBkLtSet(rt_uint32_t HiRatio) { #define FREQ_PWM1 1000 if(!HiRatio) { GPBCON = GPBCON & (~(3<<2)) | (1<<2) ; GPBDAT &= ~(1<<1); return; } GPBCON = GPBCON & (~(3<<2)) | (2<<2) ; if( HiRatio > 100 ) HiRatio = 100 ; TCON = TCON & (~(0xf<<8)) ; // clear manual update bit, stop Timer1 TCFG0 &= 0xffffff00; // set Timer 0&1 prescaler 0 TCFG0 |= 15; //prescaler = 15+1 TCFG1 &= 0xffffff0f; // set Timer 1 MUX 1/16 TCFG1 |= 0x00000030; // set Timer 1 MUX 1/16 TCNTB1 = ( 100000000>>8 )/FREQ_PWM1; //if set inverter off, when TCNT2<=TCMP2, TOUT is high, TCNT2>TCMP2, TOUT is low TCMPB1 = ( TCNTB1*(100-HiRatio))/100 ; //if set inverter on, when TCNT2<=TCMP2, TOUT is low, TCNT2>TCMP2, TOUT is high TCON = TCON & (~(0xf<<8)) | (0x0e<<8) ; TCON = TCON & (~(0xf<<8)) | (0x0d<<8) ; } /* RT-Thread Device Interface */ static rt_err_t rt_lcd_init (rt_device_t dev) { GPB1_TO_OUT(); GPB1_TO_1(); GPCUP = 0x00000000; GPCCON = 0xaaaa02a9; GPDUP = 0x00000000; GPDCON = 0xaaaaaaaa; #define M5D(n) ((n)&0x1fffff) #define LCD_ADDR ((rt_uint32_t)_rt_framebuffer) LCDCON1 = (LCD_PIXCLOCK << 8) | (3 << 5) | (12 << 1); LCDCON2 = ((LCD_UPPER_MARGIN - 1) << 24) | ((LCD_HEIGHT - 1) << 14) | ((LCD_LOWER_MARGIN - 1) << 6) | ((LCD_VSYNC_LEN - 1) << 0); LCDCON3 = ((LCD_RIGHT_MARGIN - 1) << 19) | ((LCD_WIDTH - 1) << 8) | ((LCD_LEFT_MARGIN - 1) << 0); LCDCON4 = (13 << 8) | ((LCD_HSYNC_LEN - 1) << 0); #if !defined(LCD_CON5) #define LCD_CON5 ((1<<11) | (0<<10) | (1<<9) | (1<<8) | (1<<0)) #endif LCDCON5 = LCD_CON5; LCDSADDR1 = ((LCD_ADDR >> 22) << 21) | ((M5D(LCD_ADDR >> 1)) << 0); LCDSADDR2 = M5D((LCD_ADDR + LCD_WIDTH * LCD_HEIGHT * 2) >> 1); LCDSADDR3 = LCD_WIDTH; LCDINTMSK |= (3); LPCSEL &= (~7) ; TPAL=0; LcdBkLtSet(70) ; lcd_power_enable(0, 1); lcd_envid_on_off(1); return RT_EOK; } static rt_err_t rt_lcd_control (rt_device_t dev, int cmd, void *args) { switch (cmd) { case RTGRAPHIC_CTRL_RECT_UPDATE: break; case RTGRAPHIC_CTRL_POWERON: break; case RTGRAPHIC_CTRL_POWEROFF: break; case RTGRAPHIC_CTRL_GET_INFO: rt_memcpy(args, &_lcd_info, sizeof(_lcd_info)); break; case RTGRAPHIC_CTRL_SET_MODE: break; } return RT_EOK; } int rt_hw_lcd_init(void) { rt_device_t lcd = rt_malloc(sizeof(struct rt_device)); if (lcd == RT_NULL) return -RT_ERROR; /* no memory yet */ _lcd_info.bits_per_pixel = 16; _lcd_info.pixel_format = RTGRAPHIC_PIXEL_FORMAT_RGB565P; _lcd_info.framebuffer = (void*)_rt_framebuffer; _lcd_info.width = LCD_WIDTH; _lcd_info.height = LCD_HEIGHT; /* init device structure */ lcd->type = RT_Device_Class_Unknown; lcd->init = rt_lcd_init; lcd->open = RT_NULL; lcd->close = RT_NULL; lcd->control = rt_lcd_control; lcd->user_data = (void*)&_lcd_info; /* register lcd device to RT-Thread */ rt_device_register(lcd, "lcd", RT_DEVICE_FLAG_RDWR); } INIT_BOARD_EXPORT(rt_hw_lcd_init);