EEPW论坛

上篇稍微介绍了我画的扩展板,今天主要对上边的一个模块进行操作,就是这个OLED模块,就是使用I2C驱动0.96’OLED屏幕,因为不习惯用ST的硬件IIC,所以我直接是用了软件模拟IIC配置IIC端口

添加库文件

我们这里直接使用现成的库,因为是模拟IIC,所以只用修改GPIO驱动即可

我们需要4个文件oled.c,oled.h,bmp.h,oledfont.h oled.c:IIC驱动,OLED初始化函数以及显示函数 oled.h:GPIO操作的宏定义 bmp.h:图片取的模 oledfont.h:字模

修改GPIO驱动

#define OLED_SCLK_Clr() HAL_GPIO_WritePin(SCL_GPIO_Port,SCL_Pin,GPIO_PIN_RESET) //SCL #define OLED_SCLK_Set() HAL_GPIO_WritePin(SCL_GPIO_Port,SCL_Pin,GPIO_PIN_SET) #define OLED_SDIN_Clr() HAL_GPIO_WritePin(SDA_GPIO_Port,SDA_Pin,GPIO_PIN_RESET); //SDA #define OLED_SDIN_Set() HAL_GPIO_WritePin(SDA_GPIO_Port,SDA_Pin,GPIO_PIN_SET)

编写函数

首先main函数中以用头文件

#include "oled.h" #include "bmp.h"

然后初始化OLED屏,添加一个变量和一个数组,让OLED显示变量

OLED_Init(); uint8_t num = 0; uint8_t buf[3];

然后while(1)中编写程序

num++; OLED_Fill(0x00); OLED_ShowCHinese(0u,0u,0); OLED_ShowCHinese(16u,0u,1); OLED_ShowCHinese(32u,0u,2); OLED_ShowCHinese(48u,0u,3); OLED_ShowCHinese(64u,0u,4); OLED_ShowCHinese(80u,0u,5); OLED_P8x16Str(16u,2u,(uint8_t *)"EEPW & STM32"); OLED_P8x16Str(0u,4u,(uint8_t *)"variable:"); sprintf(buf,"%d",num); OLED_P8x16Str(73u,4u,(uint8_t *)buf); HAL_Delay(5000); OLED_Fill(0x00); Draw_BMP(0u,0u,128u,8u,BMP1); HAL_Delay(5000);

效果如下

下边写一下如何取字模

首先到网上下载这个软件

下载打开

修改选项

点生成字模,生成的字模复制到oledfont.h中Hzk数组里

char Hzk[][32]={ {0x00,0x00,0xF8,0x88,0x88,0x88,0x88,0xFF,0x88,0x88,0x88,0x88,0xF8,0x00,0x00,0x00}, {0x00,0x00,0x1F,0x08,0x08,0x08,0x08,0x7F,0x88,0x88,0x88,0x88,0x9F,0x80,0xF0,0x00},/*"电",0*/ /* (16 X 16 , 宋体 )*/ {0x80,0x82,0x82,0x82,0x82,0x82,0x82,0xE2,0xA2,0x92,0x8A,0x86,0x82,0x80,0x80,0x00}, {0x00,0x00,0x00,0x00,0x00,0x40,0x80,0x7F,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*"子",1*/ /* (16 X 16 , 宋体 )*/ {0x00,0x04,0x84,0x84,0x94,0xE4,0x85,0x86,0x84,0xC4,0xB4,0x84,0x84,0x84,0x80,0x00}, {0x80,0x60,0x1F,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*"产",2*/ /* (16 X 16 , 宋体 )*/ {0x00,0x00,0x00,0x7E,0x42,0x42,0x42,0x42,0x42,0x42,0x42,0x7E,0x00,0x00,0x00,0x00}, {0x00,0xFE,0x42,0x42,0x42,0xFE,0x00,0x00,0x00,0xFE,0x42,0x42,0x42,0xFE,0x00,0x00},/*"品",3*/ /* (16 X 16 , 宋体 )*/ {0x20,0x20,0x20,0xFE,0x20,0x20,0xFF,0x20,0x20,0x20,0xFF,0x20,0x20,0x20,0x20,0x00}, {0x00,0x00,0x00,0x7F,0x40,0x40,0x47,0x44,0x44,0x44,0x47,0x40,0x40,0x40,0x00,0x00},/*"世",4*/ /* (16 X 16 , 宋体 )*/ {0x00,0x00,0x00,0xFE,0x92,0x92,0x92,0xFE,0x92,0x92,0x92,0xFE,0x00,0x00,0x00,0x00}, {0x08,0x08,0x04,0x84,0x62,0x1E,0x01,0x00,0x01,0xFE,0x02,0x04,0x04,0x08,0x08,0x00},/*"界",5*/ /* (16 X 16 , 宋体 )*/ };

然后按顺序显示即可

OLED_ShowCHinese(0u,0u,0); OLED_ShowCHinese(16u,0u,1); OLED_ShowCHinese(32u,0u,2); OLED_ShowCHinese(48u,0u,3); OLED_ShowCHinese(64u,0u,4); OLED_ShowCHinese(80u,0u,5);