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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-11-09 bigmagic first version
*/
#include "lcd_console.h"
#include "lcd_font_20.h"
#define LCD_CONSOLE_FLUSH_NOW 1
#define CONSOLE_NAME "hdmi"
#define COLOR_DELTA 0.05
#ifndef LCD_CONSOLE_FLUSH_NOW
static rt_thread_t console_flush_thread_tid = RT_NULL;
#define CONSOLE_FLUSH_THREAD_STACK_SIZE (1024)
#define CONSOLE_FLUSH_THREAD_PRIORITY (20)
#define CONSOLE_FLUSH_THREAD_TIMESLICE (10)
#define LCD_CONSOLE_DELAY (100) //100ms
#endif
static rt_device_t console_dev = RT_NULL;
static fb_t console_fb;
static rt_uint8_t* virt_buffer;
static rt_uint32_t CHAR_W = 8;
static rt_uint32_t CHAR_H = 20;
static int prev_x_offset = 0;
static void newline(fb_t* fb)
{
uint8_t* to;
uint8_t* from;
int i;
fb->y++;
fb->x = 5 * fb->depth;
if (fb->y == (fb->height / CHAR_H))
{
to = (uint8_t*) fb->vaddr;
from = to + (CHAR_H * fb->pitch);
for (i = 0; i < ((fb->height - CHAR_H) * fb->pitch); i++)
{
*to++ = *from++;
}
if(fb->depth >= 3)
{
uint32_t *addr_32bit = (uint32_t*) (fb->vaddr) + (fb->height - CHAR_H) * fb->width;
for (i = 0; i < (CHAR_H * fb->width); i++)
{
*addr_32bit++ = fb->back;
}
}
else
{
uint16_t *addr_16bit = (uint16_t*) (fb->vaddr) + (fb->height - CHAR_H) * fb->width;
for (i = 0; i < (CHAR_H * fb->width); i++)
{
*addr_16bit++ = fb->back;
}
}
fb->y = fb->y - 1;
}
}
static void fb_draw_char(fb_t *fb, char s)
{
unsigned char* addr = (unsigned char*) fb->vaddr;
unsigned char *glyph = (unsigned char *)lcd_console_font_dejavu_20_glyph_bitmap + lcd_console_font_dejavu_20_glyph_dsc[s - 32].glyph_index;
CHAR_W = lcd_console_font_dejavu_20_glyph_dsc[s - 32].w_px;
fb->x = fb->x + prev_x_offset * fb->depth;
int i, j, line, mask, bytesperline = (CHAR_W + 7) / 8;
int kk = (bytesperline) * 8;
prev_x_offset = CHAR_W + 2;
// calculate the offset on screen
int offs = (fb->y * CHAR_H * fb->pitch) + fb->x;
// display a character
for (j = 0; j < CHAR_H; j++)
{
// display one row
line = offs;
mask = 1;
mask = 0x80;
for (i = 0; i < kk; i++)
{
if(fb->depth >= 3)
{
*((unsigned int*) (addr + line)) = ((int) *(glyph + ((i)/8)) * 1) & mask ? fb->fore : fb->back;
}
else
{
*((unsigned short*) (addr + line)) = ((int) *(glyph + ((i)/8)) * 1) & mask ? fb->fore : fb->back;
}
mask >>= 1;
if(mask == 0)
{
mask = 0x80;
}
line += fb->depth;
}
// adjust to next line
glyph += bytesperline;
offs += fb->pitch;
}
}
void fb_print(char *s)
{
fb_t *fb = &console_fb;
// draw next character if it's not zero
while (*s)
{
// handle carrige return
if (*s == '\r')
{
fb->x = 5 * fb->depth;
}
else if (*s == '\n')
{
newline(fb);
}
else if (*s == '\t')
{
//tab is 8 spaces
if((fb->x + 8 * fb->depth) < (fb->width) * fb->depth)
{
fb->x = fb->x + 8 * fb->depth;
}
}
else if (*s == '\b')
{
if (fb->x > 5 * fb->depth)
{
fb->x = fb->x - prev_x_offset * fb->depth;
fb_draw_char(fb, ' ');
}
}
else if((fb->x + prev_x_offset * fb->depth + 5 * fb->depth) >= (fb->width * fb->depth))
{
newline(fb);
fb_draw_char(fb, *s);
}
else
{
fb_draw_char(fb, *s);
}
s++;
}
#ifdef LCD_CONSOLE_FLUSH_NOW
rt_memcpy((void *)fb->paddr, (void *)fb->vaddr, fb->size);
if(console_dev != RT_NULL)
{
rt_device_control(console_dev,RTGRAPHIC_CTRL_RECT_UPDATE, RT_NULL);
}
#endif
}
#ifndef LCD_CONSOLE_FLUSH_NOW
void lcd_console_task_entry(void *param)
{
fb_t *fb = (fb_t *)param;
while (1)
{
rt_memcpy((void *)fb->paddr, (void *)fb->vaddr, fb->size);
if(console_dev != RT_NULL)
{
rt_device_control(console_dev,RTGRAPHIC_CTRL_RECT_UPDATE, RT_NULL);
}
rt_thread_mdelay(LCD_CONSOLE_DELAY);
}
}
#endif
int lcd_console_init(void)
{
struct rt_device_graphic_info info;
console_dev = rt_device_find(CONSOLE_NAME);
if(console_dev == RT_NULL)
{
rt_kprintf("no console dev!\n");
return 0;
}
if(console_dev->ref_count >= 1)
{
rt_kprintf("lcd console has open!\n");
return 0;
}
rt_device_open(console_dev,RT_DEVICE_OFLAG_RDWR);
rt_device_control(console_dev, RTGRAPHIC_CTRL_GET_INFO, &info);
virt_buffer = (rt_uint8_t* )rt_malloc(info.width * info.height * (info.bits_per_pixel/8));
rt_memset(virt_buffer, 0 , info.width * info.height * (info.bits_per_pixel/8));
console_fb.width = info.width;
console_fb.height = info.height;
console_fb.pitch = info.width * (info.bits_per_pixel/8);
console_fb.vaddr = (rt_uint32_t)virt_buffer;
console_fb.paddr = (rt_uint32_t)info.framebuffer;
console_fb.size = info.width * info.height * (info.bits_per_pixel/8);
console_fb.depth = info.bits_per_pixel/8;
console_fb.x = 0;
console_fb.y = 0;
if(console_fb.depth >= 3)
{
console_fb.fore = CONSOLE_WHITE_32;
console_fb.back = CONSOLE_BLACK_32;
}
else
{
console_fb.fore = CONSOLE_WHITE_16;
console_fb.back = CONSOLE_BLACK_16;
}
#ifndef LCD_CONSOLE_FLUSH_NOW
console_flush_thread_tid = rt_thread_create("lcd_console", lcd_console_task_entry, (void *)&console_fb,
CONSOLE_FLUSH_THREAD_STACK_SIZE,
CONSOLE_FLUSH_THREAD_PRIORITY, CONSOLE_FLUSH_THREAD_TIMESLICE);
if (console_flush_thread_tid != RT_NULL)
rt_thread_startup(console_flush_thread_tid);
#endif
/*
* note:
* if serial console and lcd console together
* you can add /src/kservice.c:rt_kprintf
* #ifdef USING_LCD_CONSOLE
* fb_print((char*)rt_log_buf);
* #endif
*
* remove rt_console_set_device(CONSOLE_NAME);
*/
rt_console_set_device(CONSOLE_NAME);
rt_show_version();//show rt-thread logo
return 0;
}
INIT_APP_EXPORT(lcd_console_init);
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