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| CPU主頻 | ROM大小 | RAM大小 |
|---|---|---|
| 24 MHZ | 29KB | 9KB |
void OLED_WR_Byte(u8 dat,u8 cmd)和?void OLED_Init(void)函數分別替換為下面的內容：OLED_WR_Byte：
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);?
}?
OLED_Init：
//初始化SSD1306?????????
void?OLED_Init(void)
{????????
?OLED_WR_Byte(0xAE,OLED_CMD);?//關閉顯示
?OLED_WR_Byte(0xD5,OLED_CMD);?//設置時鐘分頻因子,震蕩頻率
?OLED_WR_Byte(80,OLED_CMD);???//[3:0],分頻因子;[7:4],震蕩頻率
?OLED_WR_Byte(0xA8,OLED_CMD);?//設置驅動路數
?OLED_WR_Byte(0X3F,OLED_CMD);?//默認0X3F(1/64)?
?OLED_WR_Byte(0xD3,OLED_CMD);?//設置顯示偏移
?OLED_WR_Byte(0X00,OLED_CMD);?//默認為0
?OLED_WR_Byte(0x40,OLED_CMD);?//設置顯示開始行?[5:0],行數.
?????????????????
?OLED_WR_Byte(0x8D,OLED_CMD);?//電荷泵設置
?OLED_WR_Byte(0x14,OLED_CMD);?//bit2，開啟/關閉
?OLED_WR_Byte(0x20,OLED_CMD);?//設置內存地址模式
?OLED_WR_Byte(0x02,OLED_CMD);?//[1:0],00，列地址模式;01，行地址模式;10,頁地址模式;默認10;
?OLED_WR_Byte(0xA1,OLED_CMD);?//段重定義設置,bit0:0,0->0;1,0->127;
?OLED_WR_Byte(0xC0,OLED_CMD);?//設置COM掃描方向;bit3:0,普通模式;1,重定義模式?COM[N-1]->COM0;N:驅動路數
?OLED_WR_Byte(0xDA,OLED_CMD);?//設置COM硬件引腳配置
?OLED_WR_Byte(0x12,OLED_CMD);?//[5:4]配置
???
?OLED_WR_Byte(0x81,OLED_CMD);?//對比度設置
?OLED_WR_Byte(0xEF,OLED_CMD);?//1~255;默認0X7F?(亮度設置,越大越亮)
?OLED_WR_Byte(0xD9,OLED_CMD);?//設置預充電周期
?OLED_WR_Byte(0xf1,OLED_CMD);?//[3:0],PHASE?1;[7:4],PHASE?2;
?OLED_WR_Byte(0xDB,OLED_CMD);?//設置VCOMH?電壓倍率
?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);?//全局顯示開啟;bit0:1,開啟;0,關閉;(白屏/黑屏)
?OLED_WR_Byte(0xA6,OLED_CMD);?//設置顯示方式;bit0:1,反相顯示;0,正常顯示??????????????
?OLED_WR_Byte(0xAF,OLED_CMD);?//開啟顯示??
?OLED_Clear();
}??
下載程序，觀看現象。
//畫點函數接口
void?gfx_draw_pixel(int?x,?int?y,?unsigned?int?rgb)
{
????OLED_DrawPoint(x,y,rgb);
}
//畫面函數(未使用)
void?gfx_draw_fill(int?x,?int?y,int?w,?int?q,?unsigned?int?rgb)
{?
}
//創建一個函數指針結構體
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);
//設定延時函數接口
void?delay_ms(int?milli_seconds)
{
?HAL_Delay(milli_seconds);
}
//傳遞函數指針
my_gfx_op.draw_pixel?=?gfx_draw_pixel;
my_gfx_op.fill_rect?=?NULL;//gfx_fill_rect;
//啟動畫圓
startHelloCircle(NULL,?128,?64,?1,?&my_gfx_op);
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