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来源 | Top嵌入式
void OLED_WR_Byte(u8 dat,u8 cmd)和 void OLED_Init(void)函数分别替换为下面的内容：void OLED_WR_Byte(u8 dat,u8 cmd)
{
if(cmd)
HAL_I2C_Mem_Write(&hi2c1 ,0x78,0x40,I2C_MEMADD_SIZE_8BIT,&dat,1,0x100);
else
HAL_I2C_Mem_Write(&hi2c1 ,0x78,0x00,I2C_MEMADD_SIZE_8BIT,&dat,1,0x100);
}
//初始化SSD1306
void OLED_Init(void)
{
OLED_WR_Byte(0xAE,OLED_CMD); //关闭显示
OLED_WR_Byte(0xD5,OLED_CMD); //设置时钟分频因子,震荡频率
OLED_WR_Byte(80,OLED_CMD); //[3:0],分频因子;[7:4],震荡频率
OLED_WR_Byte(0xA8,OLED_CMD); //设置驱动路数
OLED_WR_Byte(0X3F,OLED_CMD); //默认0X3F(1/64)
OLED_WR_Byte(0xD3,OLED_CMD); //设置显示偏移
OLED_WR_Byte(0X00,OLED_CMD); //默认为0
OLED_WR_Byte(0x40,OLED_CMD); //设置显示开始行 [5:0],行数.
OLED_WR_Byte(0x8D,OLED_CMD); //电荷泵设置
OLED_WR_Byte(0x14,OLED_CMD); //bit2，开启/关闭
OLED_WR_Byte(0x20,OLED_CMD); //设置内存地址模式
OLED_WR_Byte(0x02,OLED_CMD); //[1:0],00，列地址模式;01，行地址模式;10,页地址模式;默认10;
OLED_WR_Byte(0xA1,OLED_CMD); //段重定义设置,bit0:0,0->0;1,0->127;
OLED_WR_Byte(0xC0,OLED_CMD); //设置COM扫描方向;bit3:0,普通模式;1,重定义模式 COM[N-1]->COM0;N:驱动路数
OLED_WR_Byte(0xDA,OLED_CMD); //设置COM硬件引脚配置
OLED_WR_Byte(0x12,OLED_CMD); //[5:4]配置
OLED_WR_Byte(0x81,OLED_CMD); //对比度设置
OLED_WR_Byte(0xEF,OLED_CMD); //1~255;默认0X7F (亮度设置,越大越亮)
OLED_WR_Byte(0xD9,OLED_CMD); //设置预充电周期
OLED_WR_Byte(0xf1,OLED_CMD); //[3:0],PHASE 1;[7:4],PHASE 2;
OLED_WR_Byte(0xDB,OLED_CMD); //设置VCOMH 电压倍率
OLED_WR_Byte(0x30,OLED_CMD); //[6:4] 000,0.65*vcc;001,0.77*vcc;011,0.83*vcc;
OLED_WR_Byte(0xA4,OLED_CMD); //全局显示开启;bit0:1,开启;0,关闭;(白屏/黑屏)
OLED_WR_Byte(0xA6,OLED_CMD); //设置显示方式;bit0:1,反相显示;0,正常显示
OLED_WR_Byte(0xAF,OLED_CMD); //开启显示
OLED_Clear();
}
//画点函数接口
void gfx_draw_pixel(int x, int y, unsigned int rgb)
{
OLED_DrawPoint(x,y,rgb);
}
//画面函数(未使用)
void gfx_draw_fill(int x, int y,int w, int q, unsigned int rgb)
{
}
//创建一个函数指针结构体
struct EXTERNAL_GFX_OP
{
void (*draw_pixel)(int x, int y, unsigned int rgb);
void (*fill_rect)(int x0, int y0, int x1, int y1, unsigned int rgb);
} my_gfx_op;
extern void startHelloCircle(void* phy_fb, int width, int height, int color_bytes, struct EXTERNAL_GFX_OP* gfx_op);
//设定延时函数接口
void delay_ms(int milli_seconds)
{
HAL_Delay(milli_seconds);
}
//传递函数指针
my_gfx_op.draw_pixel = gfx_draw_pixel;
my_gfx_op.fill_rect = NULL;//gfx_fill_rect;
//启动画圆
startHelloCircle(NULL, 128, 64, 1, &my_gfx_op);
