在CodeBlocks搭建SDL2工程OLED液晶模拟器虚拟OLED单色液晶
例程说明
参考例程: 在CodeBlocks下搭建SDL2开发工程
参考例程: STM32F103xx TFT液晶显示ASCII字符串、中文、图片并且显示带有镜像和旋转功能
1. 在CodeBlocks下搭建SDL2工程,并且虚拟OLED单色液晶的显示
源码下载目录
源码下载目录: 在CodeBlocks搭建SDL2工程OLED液晶模拟器虚拟OLED单色液晶(128x64)
工程配置
一、SDL2的初始化和退出
/* 初始化SDL2 */
static u8 xInit_SDL2(void)
{
/* 初始化SDL */
if (SDL_Init(SDL_INIT_AUDIO | SDL_INIT_VIDEO) < 0)
{
SDL_Log("SDL Init Fail......%s\r\n", SDL_GetError());
return 1;
}
/* 创建窗口 */
AppMainWin = SDL_CreateWindow("SDL2 Demo", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, WINDOW_PHY_WIDTH, WINDOW_PHY_HEIGHT, SDL_WINDOW_SHOWN);
if (AppMainWin == NULL)
{
SDL_Log("SDL Create Window Fail......%s\r\n", SDL_GetError());
return 2;
}
/* 创建渲染器 */
AppRender = SDL_CreateRenderer(AppMainWin, -1, SDL_RENDERER_ACCELERATED);
if (AppRender == NULL)
{
SDL_Log("SDL Create Renderer......%s", SDL_GetError());
return 3;
}
// 清空渲染器
SDL_Rect rect = {
0, 0, (OLED_PHY_XWIDTH * A_PIXEL_SIZE), (OLED_PHY_YHEIGHT * A_PIXEL_SIZE)};
SDL_RenderClear(AppRender);
SDL_SetRenderDrawColor(AppRender, OLED_DEF_BACK_COLOR); //背景色
SDL_RenderFillRect(AppRender, &rect);
SDL_RenderPresent(AppRender);
return 0;
}
/* 退出SDL2 */
static void vQuit_SDL2(void)
{
SDL_Log("Complier Date: %s %s\r\n", __DATE__, __TIME__);
/* 销毁渲染器 */
if (AppRender != NULL) SDL_DestroyRenderer(AppRender);
/* 销毁窗口 */
if (AppMainWin != NULL) SDL_DestroyWindow(AppMainWin);
/* 退出SDL */
SDL_Quit();
}
二、OLED画点和读点
/* 画点 */
void vOLED_DrawPoint(u16 x, u16 y, u8 mode)
{
u8 yTemp = 0;
u16 yPost = 0;
yPost = y / 8; /* 页位置 */
yTemp = 0x01 << (y % 8); /* 页偏移位置 */
if (mode) OLED_DISP_GRAM[x][yPost] |= yTemp; /* 置位 */
else OLED_DISP_GRAM[x][yPost] &= (~yTemp); /* 清零 */
}
/* 读点 */
u8 xOLED_ReadPoint(u16 x, u16 y)
{
u8 yTemp = 0;
u16 yPost = 0;
yPost = y / 8; /* 页位置 */
yTemp = 0x01 << (y % 8); /* 页偏移位置 */
return ((OLED_DISP_GRAM[x][yPost] & yTemp) ? 0x01 : 0x00);
}
三、更新OLDE的GRAM
/* 写GRAM */
void vOLED_UpdateGRAM(void)
{
// SDL_Log("OLED Update Start......%llu\r\n", SDL_GetTicks64());
SDL_Rect rect = {
0, 0, A_PIXEL_SIZE, A_PIXEL_SIZE};
u16 x = 0, y = 0, i = 0;
u8 dat = 0;
for (x = 0; x < OLED_DISP_GRAM_XWIDTH_MAX; ++x)
{
rect.x = x * A_PIXEL_SIZE;/* 实际绘制X */
for (y = 0; y < OLED_DISP_GRAM_YHEIGHT_MAX; ++y)
{
dat = OLED_DISP_GRAM[x][y];
for (i = 0; i < 8; ++i)
{
rect.y = ((y << 3) + i) * A_PIXEL_SIZE;/* 实际绘制Y */
if ((dat >> i) & 0x01) SDL_SetRenderDrawColor(AppRender, OLED_DEF_FORE_COLOR); //前景色
else SDL_SetRenderDrawColor(AppRender, OLED_DEF_BACK_COLOR); //背景色
SDL_RenderFillRect(AppRender, &rect); // 填充矩形
}
}
}
SDL_RenderPresent(AppRender); /* 更新屏幕 */
// SDL_Log("OLED Update End......%llu\r\n", SDL_GetTicks64());
}
四、清屏和清某区域
/* 清屏 */
void vOLED_ClearScreen(void)
{
u16 x = 0, y = 0;
for (x = 0; x < OLED_DISP_GRAM_XWIDTH_MAX; ++x)
{
for (y = 0; y < OLED_DISP_GRAM_YHEIGHT_MAX; ++y)
{
OLED_DISP_GRAM[x][y] = 0;
}
}
SDL_Rect rect = {
0, 0, (OLED_PHY_XWIDTH * A_PIXEL_SIZE), (OLED_PHY_YHEIGHT * A_PIXEL_SIZE)};
SDL_SetRenderDrawColor(AppRender, OLED_DEF_BACK_COLOR);
SDL_RenderFillRect(AppRender, &rect);
SDL_RenderPresent(AppRender);
}
void vOLED_ClearArea(u16 x0, u16 y0, u16 x1, u16 y1, u8 mode)
{
u16 x = 0, y = 0;
for (x = x0; x <= x1; x++)
{
for (y = y0; y <= y1; y++)
{
if ((x < AppDevOLED.xWidth) && (y < AppDevOLED.yHeight))
{
vOLED_DrawPoint(x, y