445 lines
11 KiB
C
445 lines
11 KiB
C
#include "lcds.h"
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#include "delay.h"
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#define ST_DISP_ON 0xAF // 显示开
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#define ST_DISP_OFF 0xAE // 显示关
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#define ST_START_LINE 0x40 // 设置Start Line
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#define ST_PAGE_ADDR 0xB0 // 设置Page Address
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#define ST_COL_ADDRM 0x10 // 设置Column Address MSB
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#define ST_COL_ADDRL 0x00 // 设置Column Address LSB
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#define ST_DISP_NORMAL 0xA6 // 正常显示,1-显示
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#define ST_DISP_REVERSE 0xA7 // 反向显示,0-显示
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#define ST_DISP_ALL_OFF 0xA4 // 正常显示
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#define ST_DISP_ALL_ON 0xA5 // 不管RAM内容，全部显示
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#define ST_RESET 0xE2 // 软件复位
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#define ST_BOOST 0x2F // 内部升压
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#define ST_DISP_0 0xC4 // 0度正常显示
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#define ST_DISP_180 0xC2 // 旋转180度显示
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#define ST_SET_EV 0x81 // 对比度控制
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/*
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驱动使用的数据结构，不对外
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*/
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struct _cog_drv_data
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{
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uint8_t gram[8][COL_DOT_MAX_192];
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/*刷新区域*/
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uint16_t sx;
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uint16_t ex;
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uint16_t sy;
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uint16_t ey;
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uint16_t disx;
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uint16_t disy;
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};
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/**
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* @brief 写命令
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* @param {uint8_t} cmd
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* @return {*}
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*/
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static void write_cmd(spi_t *handle, uint8_t cmd)
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{
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handle->interface.u.lcd.write_cmd(handle, cmd);
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}
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static void write_data(spi_t *handle, uint8_t *data, uint16_t len)
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{
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handle->interface.u.lcd.write_data(handle, data, len);
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}
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/**
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* @brief 设置起始页
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* @param {uint8_t} page
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* @return {*}
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*/
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static void start_page(spi_t *handle, uint8_t page)
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{
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page &= 0x07; // 定义低3 位
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page |= ST_PAGE_ADDR; // 第一页
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write_cmd(handle, page);
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}
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/**
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* @brief 设置起始列
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* @param {uint8_t} Column
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* @return {*}
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*/
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static void start_column(spi_t *handle, uint8_t column)
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{
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uint8_t temp, cmd;
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temp = column;
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cmd = (temp & 0x0F); // 定义A3-A0;
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cmd += ST_COL_ADDRL;
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write_cmd(handle, cmd);
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temp >>= 4;
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cmd = (temp & 0x0F); // 定义A7-A4;
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cmd += ST_COL_ADDRM;
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write_cmd(handle, cmd);
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}
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/**
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* @brief 设置起始行
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* @param {uint8_t} line
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* @return {*}
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*/
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static void start_line(spi_t *handle, uint8_t line)
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{
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line &= 0x3F; // 定义低6 位
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line |= ST_START_LINE; // 第一行或
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write_cmd(handle, line);
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}
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/**
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* @brief 初始化，包括硬件初始化和软件初始化
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* @param {lcd_t} *lcd
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* @return {*}
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*/
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static int32_t _init(lcd_t *lcd)
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{
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lcd->info.spi->gpios.rst->set(*lcd->info.spi->gpios.rst);
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delay_tick(50);
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lcd->info.spi->gpios.rst->reset(*lcd->info.spi->gpios.rst);
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delay_tick(50);
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lcd->info.spi->gpios.rst->set(*lcd->info.spi->gpios.rst);
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delay_tick(50);
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lcd->info.on = 0;
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lcd->info.pri = (void *)osel_mem_alloc(sizeof(struct _cog_drv_data));
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uint8_t *p = (uint8_t *)lcd->info.pri;
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osel_memset(p, 0x00, (lcd->info.height / 8) * lcd->info.width);
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write_cmd(lcd->info.spi, ST_RESET); // 软件复位
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delay_ms(20);
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write_cmd(lcd->info.spi, ST_BOOST); // 内部升压
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delay_ms(20);
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write_cmd(lcd->info.spi, ST_DISP_OFF); // display Off
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lcd->info.on = 0;
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write_cmd(lcd->info.spi, 0xa0);
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delay_ms(20);
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write_cmd(lcd->info.spi, ST_SET_EV);
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write_cmd(lcd->info.spi, 0x79);
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write_cmd(lcd->info.spi, 0xeb);
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start_line(lcd->info.spi, 0); // display start line=0
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write_cmd(lcd->info.spi, ST_DISP_NORMAL); // 正常显示,1-显示
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write_cmd(lcd->info.spi, ST_DISP_ALL_OFF); // 正常显示
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write_cmd(lcd->info.spi, ST_DISP_0); // 0度正常显示
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lcd->info.scandir = 0;
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// 应用层去清空并显示
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// lcd->driver.color_fill(lcd, 0, lcd->info.width, 0, lcd->info.height, WHITE);
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// lcd->driver.onoff(lcd, 1);
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return 0;
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}
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/**
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*@brief refresh_gram
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*@details: 刷新指定区域到屏幕上
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坐标是横屏模式坐标
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*@param[in] uint16_t sc
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uint16_t ec
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uint16_t sp
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uint16_t ep
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*@param[out] 无
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*@retval: static
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*/
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static uint32_t refresh_gram(lcd_t *lcd, uint16_t sc, uint16_t ec, uint16_t sp, uint16_t ep)
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{
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struct _cog_drv_data *drvdata;
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uint8_t i;
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drvdata = (struct _cog_drv_data *)lcd->info.pri;
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for (i = sp / 8; i <= ep / 8; i++)
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{
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// 设置页地址。每页是8行。一个画面的64行被分成8个页。我们平常所说的第1页，在LCD驱动IC里是第0页
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start_page(lcd->info.spi, i);
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// 设置列地址的高4位 和列地址的低4位
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start_column(lcd->info.spi, sc);
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write_data(lcd->info.spi, &(drvdata->gram[i][sc]), (ec - sc + 1));
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}
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return 0;
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}
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/**
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* @brief 画点
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* @param {lcd_t} *lcd
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* @param {uint16_t} x
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* @param {uint16_t} y
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* @param {uint16_t} color
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* @return {*}
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*/
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static int32_t _draw_point(lcd_t *lcd, uint16_t x, uint16_t y, uint16_t color)
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{
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uint16_t xtmp, ytmp;
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uint16_t page, colum;
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struct _cog_drv_data *drvdata;
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drvdata = (struct _cog_drv_data *)lcd->info.pri;
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if (x > lcd->info.width)
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return -1;
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if (y > lcd->info.height)
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return -1;
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if (lcd->info.dir == W_LCD)
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{
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xtmp = x;
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ytmp = y;
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}
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else // 如果是竖屏，XY轴跟显存的映射要对调
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{
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xtmp = y;
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ytmp = lcd->info.width - 1 - x;
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}
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page = ytmp / 8; // 页地址
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colum = xtmp; // 列地址
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if (color == BLACK)
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{
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drvdata->gram[page][colum] |= (0x01 << (ytmp % 8));
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}
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else
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{
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drvdata->gram[page][colum] &= ~(0x01 << (ytmp % 8));
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}
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// 设置页地址。每页是8行。一个画面的64行被分成8个页。我们平常所说的第1页，在LCD驱动IC里是第0页
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start_page(lcd->info.spi, page);
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// 设置列地址的高4位 和列地址的低4位
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start_column(lcd->info.spi, colum);
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write_data(lcd->info.spi, &drvdata->gram[page][colum], 1);
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return 0;
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}
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/**
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* @brief 将一块区域设定为某种颜色
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* @param {lcd_t} *lcd
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* @param {uint16_t} sx
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* @param {uint16_t} ex
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* @param {uint16_t} sy
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* @param {uint16_t} ey
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* @param {uint16_t} color
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* @return {*}
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*/
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static int32_t _color_fill(lcd_t *lcd, uint16_t sx, uint16_t ex, uint16_t sy, uint16_t ey, uint16_t color)
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{
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uint16_t i, j;
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uint16_t xtmp, ytmp;
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uint16_t page, colum;
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struct _cog_drv_data *drvdata;
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drvdata = (struct _cog_drv_data *)lcd->info.pri;
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/*防止坐标溢出*/
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if (sy >= lcd->info.height)
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{
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sy = lcd->info.height - 1;
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}
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if (sx >= lcd->info.width)
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{
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sx = lcd->info.width - 1;
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}
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if (ey >= lcd->info.height)
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{
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ey = lcd->info.height - 1;
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}
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if (ex >= lcd->info.width)
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{
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ex = lcd->info.width - 1;
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}
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for (j = sy; j <= ey; j++)
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{
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for (i = sx; i <= ex; i++)
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{
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if (lcd->info.dir == W_LCD)
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{
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xtmp = i;
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ytmp = j;
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}
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else // 如果是竖屏，XY轴跟显存的映射要对调
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{
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xtmp = j;
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ytmp = lcd->info.width - 1 - i;
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}
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page = ytmp / 8; // 页地址
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colum = xtmp; // 列地址
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if (color == BLACK)
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{
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drvdata->gram[page][colum] |= (0x01 << (ytmp % 8));
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}
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else
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{
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drvdata->gram[page][colum] &= ~(0x01 << (ytmp % 8));
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}
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}
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}
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/*
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只刷新需要刷新的区域
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坐标范围是横屏模式
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*/
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if (lcd->info.dir == W_LCD)
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{
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refresh_gram(lcd, sx, ex, sy, ey);
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}
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else
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{
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refresh_gram(lcd, sy, ey, lcd->info.width - ex - 1, lcd->info.width - sx - 1);
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}
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return 0;
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}
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/**
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* @brief 填充矩形区域,这个函数是用来填充数据的
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* @param {lcd_t} *lcd
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* @param {uint16_t} sx
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* @param {uint16_t} ex
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* @param {uint16_t} sy
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* @param {uint16_t} ey
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* @param {uint16_t} *color
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* @return {*}
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*/
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static int32_t _fill(lcd_t *lcd, uint16_t x, uint16_t y, uint8_t font_width, uint8_t font_hight, uint8_t *buf)
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{
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uint8_t i, j, n;
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n = y;
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for (i = 0; i < font_hight / 8; i++)
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{
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start_page(lcd->info.spi, x);
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for (j = 0; j < font_width; j++)
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{
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start_column(lcd->info.spi, y);
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write_data(lcd->info.spi, &buf[j + i * font_width], 1);
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y++;
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}
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x++;
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y = n;
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}
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return 0;
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}
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/**
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* @brief
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* @param {lcd_t} *lcd
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* @param {uint16_t} sx
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* @param {uint16_t} ex
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* @param {uint16_t} sy
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* @param {uint16_t} ey
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* @return {*}
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*/
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static int32_t _prepare_display(lcd_t *lcd, uint16_t sx, uint16_t ex, uint16_t sy, uint16_t ey)
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{
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return 0;
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}
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/**
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* @brief
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* @param {lcd_t} *lcd
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* @param {uint16_t} *color
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* @param {uint32_t} len
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* @return {*}
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*/
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static void _flush(lcd_t *lcd)
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{
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}
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/**
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* @brief 显示或关闭
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* @param {lcd_t} *lcd
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* @param {uint8_t} sta
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* @return {*}
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*/
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static int32_t _onoff(lcd_t *lcd, uint8_t sta)
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{
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if (lcd->info.on != sta)
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{
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lcd->info.on = sta;
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if (sta == 1)
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{
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write_cmd(lcd->info.spi, ST_DISP_ON); // display On
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}
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else
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{
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write_cmd(lcd->info.spi, ST_DISP_OFF); // display Off
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}
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}
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return 0;
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}
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/**
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* @brief 设置显存扫描方向
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* @param {lcd_t} *lcd
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* @param {uint8_t} scan_dir 0 = 0度扫描，1 = 180度扫描
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* @return {*}
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*/
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void _set_dir(lcd_t *lcd, uint8_t scan_dir)
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{
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if (lcd->info.scandir != scan_dir)
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{
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lcd->info.scandir = scan_dir;
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if (scan_dir == 0)
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{
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write_cmd(lcd->info.spi, ST_DISP_0); // 0度扫描
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}
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else
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{
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write_cmd(lcd->info.spi, ST_DISP_180); // 180度扫描
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}
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}
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}
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void _full_fill(lcd_t *lcd, uint16_t color)
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{
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uint16_t i;
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uint8_t val;
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val = color > 0 ? 0x00 : 0xff;
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for (i = 0; i < lcd->info.height / 8; i++)
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{
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// 设置页地址。每页是8行。一个画面的64行被分成8个页。我们平常所说的第1页，在LCD驱动IC里是第0页
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start_page(lcd->info.spi, i);
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// 设置列地址的高4位 和列地址的低4位
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start_column(lcd->info.spi, 0);
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write_data(lcd->info.spi, &val, lcd->info.width);
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}
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}
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/**
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* @brief
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* @param {lcd_t} *lcd
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* @param {uint8_t} sta
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* @return {*}
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*/
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void _backlight(lcd_t *lcd, uint8_t sta) {}
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void lcd_st7525_init(lcd_driver_t *driver)
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{
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driver->init = _init; // 已实现
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driver->set_point = _draw_point; // 已实现
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driver->color_fill = _color_fill; // 已实现
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driver->fill = _fill; // 已实现
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driver->prepare_display = _prepare_display;
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driver->flush = _flush;
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driver->onoff = _onoff; // 已实现
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driver->set_dir = _set_dir;
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driver->backlight = _backlight;
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driver->full_fill = _full_fill;
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}
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