rt-thread-official/bsp/stm32/stm32l475-atk-pandora/board/ports/drv_lcd.c

997 lines
26 KiB
C

/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2018-08-14 flybreak the first version
* 2018-09-18 balanceTWK add sleep mode function
* 2018-09-27 ZYLX optimized display speed
*/
#include <rtdevice.h>
#include "drv_spi.h"
#include "drv_lcd.h"
#include "drv_lcd_font.h"
#include "drv_gpio.h"
#define DBG_SECTION_NAME "LCD"
#define DBG_COLOR
#define DBG_LEVEL DBG_LOG
#include <rtdbg.h>
#define LCD_PWR_PIN GET_PIN(B, 7)
#define LCD_DC_PIN GET_PIN(B, 4)
#define LCD_RES_PIN GET_PIN(B, 6)
#define LCD_CLEAR_SEND_NUMBER 5760
rt_uint16_t BACK_COLOR = WHITE, FORE_COLOR = BLACK;
static struct rt_spi_device *spi_dev_lcd;
static int rt_hw_lcd_config(void)
{
spi_dev_lcd = (struct rt_spi_device *)rt_device_find("spi30");
/* config spi */
{
struct rt_spi_configuration cfg;
cfg.data_width = 8;
cfg.mode = RT_SPI_MASTER | RT_SPI_MODE_0 | RT_SPI_MSB;
cfg.max_hz = 42 * 1000 * 1000; /* 42M,SPI max 42MHz,lcd 4-wire spi */
rt_spi_configure(spi_dev_lcd, &cfg);
}
return RT_EOK;
}
static rt_err_t lcd_write_cmd(const rt_uint8_t cmd)
{
rt_size_t len;
rt_pin_write(LCD_DC_PIN, PIN_LOW);
len = rt_spi_send(spi_dev_lcd, &cmd, 1);
if (len != 1)
{
LOG_I("lcd_write_cmd error. %d", len);
return -RT_ERROR;
}
else
{
return RT_EOK;
}
}
static rt_err_t lcd_write_data(const rt_uint8_t data)
{
rt_size_t len;
rt_pin_write(LCD_DC_PIN, PIN_HIGH);
len = rt_spi_send(spi_dev_lcd, &data, 1);
if (len != 1)
{
LOG_I("lcd_write_data error. %d", len);
return -RT_ERROR;
}
else
{
return RT_EOK;
}
}
static rt_err_t lcd_write_half_word(const rt_uint16_t da)
{
rt_size_t len;
char data[2] = {0};
data[0] = da >> 8;
data[1] = da;
rt_pin_write(LCD_DC_PIN, PIN_HIGH);
len = rt_spi_send(spi_dev_lcd, data, 2);
if (len != 2)
{
LOG_I("lcd_write_half_word error. %d", len);
return -RT_ERROR;
}
else
{
return RT_EOK;
}
}
static void lcd_gpio_init(void)
{
rt_hw_lcd_config();
rt_pin_mode(LCD_DC_PIN, PIN_MODE_OUTPUT);
rt_pin_mode(LCD_RES_PIN, PIN_MODE_OUTPUT);
rt_pin_mode(LCD_PWR_PIN, PIN_MODE_OUTPUT);
rt_pin_write(LCD_PWR_PIN, PIN_LOW);
rt_pin_write(LCD_RES_PIN, PIN_LOW);
//wait at least 100ms for reset
rt_thread_delay(RT_TICK_PER_SECOND / 10);
rt_pin_write(LCD_RES_PIN, PIN_HIGH);
}
static int rt_hw_lcd_init(void)
{
__HAL_RCC_GPIOD_CLK_ENABLE();
rt_hw_spi_device_attach("spi3", "spi30", GPIOD, GPIO_PIN_7);
lcd_gpio_init();
/* 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(0x35);
/* VCOM Setting */
lcd_write_cmd(0xBB);
lcd_write_data(0x19);
/* 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(0x12);
/* VDV Set */
lcd_write_cmd(0xC4);
lcd_write_data(0x20);
/* Frame Rate Control in Normal Mode */
lcd_write_cmd(0xC6);
lcd_write_data(0x0F);
/* 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);
/* Sleep Out */
lcd_write_cmd(0x11);
/* wait for power stability */
rt_thread_mdelay(100);
lcd_clear(WHITE);
/* display on */
rt_pin_write(LCD_PWR_PIN, PIN_HIGH);
lcd_write_cmd(0x29);
return RT_EOK;
}
INIT_DEVICE_EXPORT(rt_hw_lcd_init);
/**
* Set background color and foreground color
*
* @param back background color
* @param fore fore color
*
* @return void
*/
void lcd_set_color(rt_uint16_t back, rt_uint16_t fore)
{
BACK_COLOR = back;
FORE_COLOR = fore;
}
void lcd_display_on(void)
{
rt_pin_write(LCD_PWR_PIN, PIN_HIGH);
}
void lcd_display_off(void)
{
rt_pin_write(LCD_PWR_PIN, PIN_LOW);
}
/* lcd enter the minimum power consumption mode and backlight off. */
void lcd_enter_sleep(void)
{
rt_pin_write(LCD_PWR_PIN, PIN_LOW);
rt_thread_mdelay(5);
lcd_write_cmd(0x10);
}
/* lcd turn off sleep mode and backlight on. */
void lcd_exit_sleep(void)
{
rt_pin_write(LCD_PWR_PIN, PIN_HIGH);
rt_thread_mdelay(5);
lcd_write_cmd(0x11);
rt_thread_mdelay(120);
}
/**
* Set drawing area
*
* @param x1 start of x position
* @param y1 start of y position
* @param x2 end of x position
* @param y2 end of y position
*
* @return void
*/
void lcd_address_set(rt_uint16_t x1, rt_uint16_t y1, rt_uint16_t x2, rt_uint16_t 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);
}
/**
* clear the lcd.
*
* @param color Fill color
*
* @return void
*/
void lcd_clear(rt_uint16_t color)
{
rt_uint16_t i, j;
rt_uint8_t data[2] = {0};
rt_uint8_t *buf = RT_NULL;
data[0] = color >> 8;
data[1] = color;
lcd_address_set(0, 0, LCD_W - 1, LCD_H - 1);
/* 5760 = 240*240/20 */
buf = rt_malloc(LCD_CLEAR_SEND_NUMBER);
if (buf)
{
/* 2880 = 5760/2 color is 16 bit */
for (j = 0; j < LCD_CLEAR_SEND_NUMBER / 2; j++)
{
buf[j * 2] = data[0];
buf[j * 2 + 1] = data[1];
}
rt_pin_write(LCD_DC_PIN, PIN_HIGH);
for (i = 0; i < 20; i++)
{
rt_spi_send(spi_dev_lcd, buf, LCD_CLEAR_SEND_NUMBER);
}
rt_free(buf);
}
else
{
rt_pin_write(LCD_DC_PIN, PIN_HIGH);
for (i = 0; i < LCD_W; i++)
{
for (j = 0; j < LCD_H; j++)
{
rt_spi_send(spi_dev_lcd, data, 2);
}
}
}
}
/**
* display a point on the lcd.
*
* @param x x position
* @param y y position
*
* @return void
*/
void lcd_draw_point(rt_uint16_t x, rt_uint16_t y)
{
lcd_address_set(x, y, x, y);
lcd_write_half_word(FORE_COLOR);
}
/**
* display a point on the lcd using the given colour.
*
* @param x x position
* @param y y position
* @param color color of point
*
* @return void
*/
void lcd_draw_point_color(rt_uint16_t x, rt_uint16_t y, rt_uint16_t color)
{
lcd_address_set(x, y, x, y);
lcd_write_half_word(color);
}
/**
* full color on the lcd.
*
* @param x_start start of x position
* @param y_start start of y position
* @param x_end end of x position
* @param y_end end of y position
* @param color Fill color
*
* @return void
*/
void lcd_fill(rt_uint16_t x_start, rt_uint16_t y_start, rt_uint16_t x_end, rt_uint16_t y_end, rt_uint16_t color)
{
rt_uint16_t i = 0, j = 0;
rt_uint32_t size = 0, size_remain = 0;
rt_uint8_t *fill_buf = RT_NULL;
size = (x_end - x_start) * (y_end - y_start) * 2;
if (size > LCD_CLEAR_SEND_NUMBER)
{
/* the number of remaining to be filled */
size_remain = size - LCD_CLEAR_SEND_NUMBER;
size = LCD_CLEAR_SEND_NUMBER;
}
lcd_address_set(x_start, y_start, x_end, y_end);
fill_buf = (rt_uint8_t *)rt_malloc(size);
if (fill_buf)
{
/* fast fill */
while (1)
{
for (i = 0; i < size / 2; i++)
{
fill_buf[2 * i] = color >> 8;
fill_buf[2 * i + 1] = color;
}
rt_pin_write(LCD_DC_PIN, PIN_HIGH);
rt_spi_send(spi_dev_lcd, fill_buf, size);
/* Fill completed */
if (size_remain == 0)
break;
/* calculate the number of fill next time */
if (size_remain > LCD_CLEAR_SEND_NUMBER)
{
size_remain = size_remain - LCD_CLEAR_SEND_NUMBER;
}
else
{
size = size_remain;
size_remain = 0;
}
}
rt_free(fill_buf);
}
else
{
for (i = y_start; i <= y_end; i++)
{
for (j = x_start; j <= x_end; j++)lcd_write_half_word(color);
}
}
}
/**
* display a line on the lcd.
*
* @param x1 x1 position
* @param y1 y1 position
* @param x2 x2 position
* @param y2 y2 position
*
* @return void
*/
void lcd_draw_line(rt_uint16_t x1, rt_uint16_t y1, rt_uint16_t x2, rt_uint16_t y2)
{
rt_uint16_t t;
rt_uint32_t i = 0;
int xerr = 0, yerr = 0, delta_x, delta_y, distance;
int incx, incy, row, col;
if (y1 == y2)
{
/* fast draw transverse line */
lcd_address_set(x1, y1, x2, y2);
rt_uint8_t line_buf[480] = {0};
for (i = 0; i < x2 - x1; i++)
{
line_buf[2 * i] = FORE_COLOR >> 8;
line_buf[2 * i + 1] = FORE_COLOR;
}
rt_pin_write(LCD_DC_PIN, PIN_HIGH);
rt_spi_send(spi_dev_lcd, line_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;
}
}
}
/**
* display a rectangle on the lcd.
*
* @param x1 x1 position
* @param y1 y1 position
* @param x2 x2 position
* @param y2 y2 position
*
* @return void
*/
void lcd_draw_rectangle(rt_uint16_t x1, rt_uint16_t y1, rt_uint16_t x2, rt_uint16_t y2)
{
lcd_draw_line(x1, y1, x2, y1);
lcd_draw_line(x1, y1, x1, y2);
lcd_draw_line(x1, y2, x2, y2);
lcd_draw_line(x2, y1, x2, y2);
}
/**
* display a circle on the lcd.
*
* @param x x position of Center
* @param y y position of Center
* @param r radius
*
* @return void
*/
void lcd_draw_circle(rt_uint16_t x0, rt_uint16_t y0, rt_uint8_t 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++;
//Bresenham
if (di < 0)di += 4 * a + 6;
else
{
di += 10 + 4 * (a - b);
b--;
}
lcd_draw_point(x0 + a, y0 + b);
}
}
static void lcd_show_char(rt_uint16_t x, rt_uint16_t y, rt_uint8_t data, rt_uint32_t size)
{
rt_uint8_t temp;
rt_uint8_t num = 0;;
rt_uint8_t pos, t;
rt_uint16_t colortemp = FORE_COLOR;
rt_uint8_t *font_buf = RT_NULL;
if (x > LCD_W - size / 2 || y > LCD_H - size)return;
data = data - ' ';
#ifdef ASC2_1608
if (size == 16)
{
lcd_address_set(x, y, x + size / 2 - 1, y + size - 1);//(x,y,x+8-1,y+16-1)
font_buf = (rt_uint8_t *)rt_malloc(size * size);
if (!font_buf)
{
/* fast show char */
for (pos = 0; pos < size * (size / 2) / 8; pos++)
{
temp = asc2_1608[(rt_uint16_t)data * size * (size / 2) / 8 + pos];
for (t = 0; t < 8; t++)
{
if (temp & 0x80)colortemp = FORE_COLOR;
else colortemp = BACK_COLOR;
lcd_write_half_word(colortemp);
temp <<= 1;
}
}
}
else
{
for (pos = 0; pos < size * (size / 2) / 8; pos++)
{
temp = asc2_1608[(rt_uint16_t)data * size * (size / 2) / 8 + pos];
for (t = 0; t < 8; t++)
{
if (temp & 0x80)colortemp = FORE_COLOR;
else colortemp = BACK_COLOR;
font_buf[2 * (8 * pos + t)] = colortemp >> 8;
font_buf[2 * (8 * pos + t) + 1] = colortemp;
temp <<= 1;
}
}
rt_pin_write(LCD_DC_PIN, PIN_HIGH);
rt_spi_send(spi_dev_lcd, font_buf, size * size);
rt_free(font_buf);
}
}
else
#endif
#ifdef ASC2_2412
if (size == 24)
{
lcd_address_set(x, y, x + size / 2 - 1, y + size - 1);
font_buf = (rt_uint8_t *)rt_malloc(size * size);
if (!font_buf)
{
/* fast show char */
for (pos = 0; pos < (size * 16) / 8; pos++)
{
temp = asc2_2412[(rt_uint16_t)data * (size * 16) / 8 + pos];
if (pos % 2 == 0)
{
num = 8;
}
else
{
num = 4;
}
for (t = 0; t < num; t++)
{
if (temp & 0x80)colortemp = FORE_COLOR;
else colortemp = BACK_COLOR;
lcd_write_half_word(colortemp);
temp <<= 1;
}
}
}
else
{
for (pos = 0; pos < (size * 16) / 8; pos++)
{
temp = asc2_2412[(rt_uint16_t)data * (size * 16) / 8 + pos];
if (pos % 2 == 0)
{
num = 8;
}
else
{
num = 4;
}
for (t = 0; t < num; t++)
{
if (temp & 0x80)colortemp = FORE_COLOR;
else colortemp = BACK_COLOR;
if (num == 8)
{
font_buf[2 * (12 * (pos / 2) + t)] = colortemp >> 8;
font_buf[2 * (12 * (pos / 2) + t) + 1] = colortemp;
}
else
{
font_buf[2 * (8 + 12 * (pos / 2) + t)] = colortemp >> 8;
font_buf[2 * (8 + 12 * (pos / 2) + t) + 1] = colortemp;
}
temp <<= 1;
}
}
rt_pin_write(LCD_DC_PIN, PIN_HIGH);
rt_spi_send(spi_dev_lcd, font_buf, size * size);
rt_free(font_buf);
}
}
else
#endif
#ifdef ASC2_3216
if (size == 32)
{
lcd_address_set(x, y, x + size / 2 - 1, y + size - 1);
font_buf = (rt_uint8_t *)rt_malloc(size * size);
if (!font_buf)
{
/* fast show char */
for (pos = 0; pos < size * (size / 2) / 8; pos++)
{
temp = asc2_3216[(rt_uint16_t)data * size * (size / 2) / 8 + pos];
for (t = 0; t < 8; t++)
{
if (temp & 0x80)colortemp = FORE_COLOR;
else colortemp = BACK_COLOR;
lcd_write_half_word(colortemp);
temp <<= 1;
}
}
}
else
{
for (pos = 0; pos < size * (size / 2) / 8; pos++)
{
temp = asc2_3216[(rt_uint16_t)data * size * (size / 2) / 8 + pos];
for (t = 0; t < 8; t++)
{
if (temp & 0x80)colortemp = FORE_COLOR;
else colortemp = BACK_COLOR;
font_buf[2 * (8 * pos + t)] = colortemp >> 8;
font_buf[2 * (8 * pos + t) + 1] = colortemp;
temp <<= 1;
}
}
rt_pin_write(LCD_DC_PIN, PIN_HIGH);
rt_spi_send(spi_dev_lcd, font_buf, size * size);
rt_free(font_buf);
}
}
else
#endif
{
LOG_E("There is no any define ASC2_1208 && ASC2_2412 && ASC2_2416 && ASC2_3216 !");
}
}
/**
* display the number on the lcd.
*
* @param x x position
* @param y y position
* @param num number
* @param len length of number
* @param size size of font
*
* @return void
*/
void lcd_show_num(rt_uint16_t x, rt_uint16_t y, rt_uint32_t num, rt_uint8_t len, rt_uint32_t size)
{
lcd_show_string(x, y, size, "%d", num);
}
/**
* display the string on the lcd.
*
* @param x x position
* @param y y position
* @param size size of font
* @param p the string to be display
*
* @return 0: display success
* -1: size of font is not support
*/
rt_err_t lcd_show_string(rt_uint16_t x, rt_uint16_t y, rt_uint32_t size, const char *fmt, ...)
{
#define LCD_STRING_BUF_LEN 128
va_list args;
rt_uint8_t buf[LCD_STRING_BUF_LEN] = {0};
rt_uint8_t *p = RT_NULL;
if (size != 16 && size != 24 && size != 32)
{
LOG_E("font size(%d) is not support!", size);
return -RT_ERROR;
}
va_start(args, fmt);
rt_vsnprintf((char *)buf, 100, (const char *)fmt, args);
va_end(args);
p = buf;
while (*p != '\0')
{
if (x > LCD_W - size / 2)
{
x = 0;
y += size;
}
if (y > LCD_H - size)
{
y = x = 0;
lcd_clear(RED);
}
lcd_show_char(x, y, *p, size);
x += size / 2;
p++;
}
return RT_EOK;
}
/**
* display the image on the lcd.
*
* @param x x position
* @param y y position
* @param length length of image
* @param wide wide of image
* @param p image
*
* @return 0: display success
* -1: the image is too large
*/
rt_err_t lcd_show_image(rt_uint16_t x, rt_uint16_t y, rt_uint16_t length, rt_uint16_t wide, const rt_uint8_t *p)
{
RT_ASSERT(p);
if (x + length > LCD_W || y + wide > LCD_H)
{
return -RT_ERROR;
}
lcd_address_set(x, y, x + length - 1, y + wide - 1);
rt_pin_write(LCD_DC_PIN, PIN_HIGH);
rt_spi_send(spi_dev_lcd, p, length * wide * 2);
return RT_EOK;
}
#ifdef PKG_USING_QRCODE
QRCode qrcode;
static rt_uint8_t get_enlargement_factor(rt_uint16_t x, rt_uint16_t y, rt_uint8_t size)
{
rt_uint8_t enlargement_factor = 1 ;
if (x + size * 8 <= LCD_W && y + size * 8 <= LCD_H)
{
enlargement_factor = 8;
}
else if (x + size * 4 <= LCD_W &&y + size * 4 <= LCD_H)
{
enlargement_factor = 4;
}
else if (x + size * 2 <= LCD_W && y + size * 2 <= LCD_H)
{
enlargement_factor = 2;
}
return enlargement_factor;
}
static void show_qrcode_by_point(rt_uint16_t x, rt_uint16_t y, rt_uint8_t size, rt_uint8_t enlargement_factor)
{
rt_uint32_t width = 0, high = 0;
for (high = 0; high < size; high++)
{
for (width = 0; width < size; width++)
{
if (qrcode_getModule(&qrcode, width, high))
{
/* magnify pixel */
for (rt_uint32_t offset_y = 0; offset_y < enlargement_factor; offset_y++)
{
for (rt_uint32_t offset_x = 0; offset_x < enlargement_factor; offset_x++)
{
lcd_draw_point(x + enlargement_factor * width + offset_x, y + enlargement_factor * high + offset_y);
}
}
}
}
}
}
static void show_qrcode_by_line(rt_uint16_t x, rt_uint16_t y, rt_uint8_t size, rt_uint8_t enlargement_factor,rt_uint8_t *qrcode_buf)
{
rt_uint32_t width = 0, high = 0;
for (high = 0; high < qrcode.size; high++)
{
for (width = 0; width < qrcode.size; width++)
{
if (qrcode_getModule(&qrcode, width, high))
{
/* magnify pixel */
for (rt_uint32_t offset_y = 0; offset_y < enlargement_factor; offset_y++)
{
for (rt_uint32_t offset_x = 0; offset_x < enlargement_factor; offset_x++)
{
/* save the information of modules */
qrcode_buf[2 * (enlargement_factor * width + offset_x + offset_y * qrcode.size * enlargement_factor)] = FORE_COLOR >> 8;
qrcode_buf[2 * (enlargement_factor * width + offset_x + offset_y * qrcode.size * enlargement_factor) + 1] = FORE_COLOR;
}
}
}
else
{
/* magnify pixel */
for (rt_uint32_t offset_y = 0; offset_y < enlargement_factor; offset_y++)
{
for (rt_uint32_t offset_x = 0; offset_x < enlargement_factor; offset_x++)
{
/* save the information of blank */
qrcode_buf[2 * (enlargement_factor * width + offset_x + offset_y * qrcode.size * enlargement_factor)] = BACK_COLOR >> 8;
qrcode_buf[2 * (enlargement_factor * width + offset_x + offset_y * qrcode.size * enlargement_factor) + 1] = BACK_COLOR;
}
}
}
}
/* display a line of qrcode */
lcd_show_image(x, y + high * enlargement_factor, qrcode.size * enlargement_factor, enlargement_factor, qrcode_buf);
}
}
/**
* display the qrcode on the lcd.
* size = (4 * version +17) * enlargement
*
* @param x x position
* @param y y position
* @param version version of qrcode
* @param ecc level of error correction
* @param data string
* @param enlargement enlargement_factor
*
* @return 0: display success
* -1: generate qrcode failed
* -5: memory low
*/
rt_err_t lcd_show_qrcode(rt_uint16_t x, rt_uint16_t y, rt_uint8_t version, rt_uint8_t ecc, const char *data, rt_uint8_t enlargement)
{
RT_ASSERT(data);
rt_int8_t result = 0;
rt_uint8_t enlargement_factor = 1;
rt_uint8_t *qrcode_buf = RT_NULL;
if (x + version * 4 + 17 > LCD_W || y + version * 4 + 17 > LCD_H)
{
LOG_E("The qrcode is too big!");
return -RT_ERROR;
}
rt_uint8_t *qrcodeBytes = (rt_uint8_t *)rt_calloc(1, qrcode_getBufferSize(version));
if (qrcodeBytes == RT_NULL)
{
LOG_E("no memory for qrcode!");
return -RT_ENOMEM;
}
/* generate qrcode */
result = qrcode_initText(&qrcode, qrcodeBytes, version, ecc, data);
if (result >= 0)
{
/* set enlargement factor */
if(enlargement == 0)
{
enlargement_factor = get_enlargement_factor(x, y, qrcode.size);
}
else
{
enlargement_factor = enlargement;
}
/* malloc memory for quick display of qrcode */
qrcode_buf = rt_malloc(qrcode.size * 2 * enlargement_factor * enlargement_factor);
if (qrcode_buf == RT_NULL)
{
/* clear lcd */
lcd_fill(x, y, x + qrcode.size, y + qrcode.size, BACK_COLOR);
/* draw point to display qrcode */
show_qrcode_by_point(x, y, qrcode.size, enlargement_factor);
}
else
{
/* quick display of qrcode */
show_qrcode_by_line(x, y, qrcode.size, enlargement_factor,qrcode_buf);
}
result = RT_EOK;
}
else
{
LOG_E("QRCODE(%s) generate falied(%d)\n", data, result);
result = -RT_ENOMEM;
goto __exit;
}
__exit:
if (qrcodeBytes)
{
rt_free(qrcodeBytes);
}
if (qrcode_buf)
{
rt_free(qrcode_buf);
}
return result;
}
#endif