【ACM32G103RCT6开发板测评】+ I2C之OELD驱动测试

TL-LED

【ACM32G103RCT6开发板测评】+ I2C之OELD驱动测试 [复制链接]

 

测试下使用ACM32G103RCT6硬件i2c驱动OLED显示屏

 

一、硬件部分

 

驱动OLED硬件使用了I2C1的PB6和PB7引脚。

 

二、程序部分

2.1、i2c初始化部分

这部分和上篇https://bbs.eeworld.com.cn/thread-1270022-1-1.html配置一样。

 

2.2、oled.c

#include "main.h"
#include "oled/oled.h"
#include "oled/codetab.h"

//extern I2C_HandleTypeDef hi2c1;
#define OLED_HANDLE             I2C_Handle

void I2C_WriteByte(uint8_t addr, uint8_t dat)
{
  uint8_t temp[2];
  temp[0] = dat;
	HAL_I2C_Mem_Write(&OLED_HANDLE,OLED_ADDRESS,addr,I2C_MEMADD_SIZE_8BIT,temp,1,10);
}


void WriteCmd(unsigned char I2C_Command)
{
    I2C_WriteByte(0x00, I2C_Command);
}

void WriteDat(unsigned char I2C_Data) 
{
    I2C_WriteByte(0x40, I2C_Data);
}

void OLED_WrCmd(unsigned char IIC_Command)
{
	WriteCmd(IIC_Command);
}

void OLED_Init(void)
{
	HAL_Delay(100);
	WriteCmd(0xAE); //display off
	WriteCmd(0x20);	//Set Memory Addressing Mode	
	WriteCmd(0x10);	//00,Horizontal Addressing Mode;01,Vertical Addressing Mode;10,Page Addressing Mode (RESET);11,Invalid
	WriteCmd(0xb0);	//Set Page Start Address for Page Addressing Mode,0-7
	WriteCmd(0xc8);	//Set COM Output Scan Direction
	WriteCmd(0x00); //---set low column address
	WriteCmd(0x10); //---set high column address
	WriteCmd(0x40); //--set start line address
	WriteCmd(0x81); //--set contrast control register
	WriteCmd(0xff); //亮度调节 0x00~0xff
	WriteCmd(0xa1); //--set segment re-map 0 to 127
	WriteCmd(0xa6); //--set normal display
	WriteCmd(0xa8); //--set multiplex ratio(1 to 64)
	WriteCmd(0x3F); //
	WriteCmd(0xa4); //0xa4,Output follows RAM content;0xa5,Output ignores RAM content
	WriteCmd(0xd3); //-set display offset
	WriteCmd(0x00); //-not offset
	WriteCmd(0xd5); //--set display clock divide ratio/oscillator frequency
	WriteCmd(0xf0); //--set divide ratio
	WriteCmd(0xd9); //--set pre-charge period
	WriteCmd(0x22); //
	WriteCmd(0xda); //--set com pins hardware configuration
	WriteCmd(0x12);
	WriteCmd(0xdb); //--set vcomh
	WriteCmd(0x40); //0x20,0.77xVcc
	WriteCmd(0x8d); //--set DC-DC enable
	WriteCmd(0x14); //
	WriteCmd(0xaf); //--turn on oled panel
}

void OLED_SetPos(unsigned char x, unsigned char y) 
{ 
	WriteCmd(0xb0+y);
	WriteCmd(((x&0xf0)>>4)|0x10);
	WriteCmd((x&0x0f)|0x01);
}

void OLED_Fill(unsigned char fill_Data)//全屏填充
{
	unsigned char m,n;
	for(m=0;m<8;m++)
	{
		WriteCmd(0xb0+m);		//page0-page1
		WriteCmd(0x00);		//low column start address
		WriteCmd(0x10);		//high column start address
		for(n=0;n<128;n++)
			{
				WriteDat(fill_Data);
			}
	}
}

void OLED_CLS(void)//清屏
{
	OLED_Fill(0xff);
}

void OLED_ON(void)
{
	WriteCmd(0X8D);  //设置电荷泵
	WriteCmd(0X14);  //开启电荷泵
	WriteCmd(0XAF);  //OLED唤醒
}

void OLED_OFF(void)
{
	WriteCmd(0X8D);  //设置电荷泵
	WriteCmd(0X10);  //关闭电荷泵
	WriteCmd(0XAE);  //OLED休眠
}

void OLED_ShowStr(unsigned char x, unsigned char y, unsigned char ch[], unsigned char TextSize)
{
	unsigned char c = 0,i = 0,j = 0;
	switch(TextSize)
	{
		case 1:
		{
			while(ch[j] != '\0')
			{
				c = ch[j] - 32;
				if(x > 126)
				{
					x = 0;
					y++;
				}
				OLED_SetPos(x,y);
				for(i=0;i<6;i++)
					WriteDat(F6x8[c][i]);
				x += 6;
				j++;
			}
		}break;
		case 2:
		{
			while(ch[j] != '\0')
			{
				c = ch[j] - 32;
				if(x > 120)
				{
					x = 0;
					y++;
				}
				OLED_SetPos(x,y);
				for(i=0;i<8;i++)
					WriteDat(F8X16[c*16+i]);
				OLED_SetPos(x,y+1);
				for(i=0;i<8;i++)
					WriteDat(F8X16[c*16+i+8]);
				x += 8;
				j++;
			}
		}break;
	}
}

void OLED_ShowCN(unsigned char x, unsigned char y, unsigned char N)
{
	unsigned char wm=0;
	unsigned int  adder=32*N;
	OLED_SetPos(x , y);
	for(wm = 0;wm < 16;wm++)
	{
		WriteDat(F16x16[adder]);
		adder += 1;
	}
	OLED_SetPos(x,y + 1);
	for(wm = 0;wm < 16;wm++)
	{
		WriteDat(F16x16[adder]);
		adder += 1;
	}
}

void OLED_DrawBMP(unsigned char x0,unsigned char y0,unsigned char x1,unsigned char y1,unsigned char BMP[])
{
	unsigned int j=0;
	unsigned char x,y;

  if(y1%8==0)
		y = y1/8;
  else
		y = y1/8 + 1;
	for(y=y0;y<y1;y++)
	{
		OLED_SetPos(x0,y);
    for(x=x0;x<x1;x++)
		{
			WriteDat(BMP[j++]);
		}
	}
}

void oled_test(void)
{
	OLED_Init();
	OLED_Fill(0x00);
	OLED_ShowStr(0,0,"ACM32G103RCT6",2);
	OLED_ShowStr(0,2,"I2C OLED TEST",2);	
}

 

2.3、main.c

#include "main.h" 

int main(void)
{
	HAL_Init();  
	SystemClock_Config();    
	usart_init(115200);
	printf("\r\n\r\n====== ACM32G103 MCU is runing ======\r\nSysCoreClk: %dHz, HCLK:%dHz\r\nPCLK1:%dHz, PCLK2:%dHz\r\n\r\n",g_SystemCoreClock, HAL_RCC_GetHCLKFreq(),HAL_RCC_GetPCLK1Freq(),HAL_RCC_GetPCLK2Freq());  
   
	init_led();
	init_tim2();
	init_key();
	I2C_Init();
	//adc_test();
	//eeprom_test();
	oled_test();
	while(1)
	{
		//HAL_Delay(500);
		//led1_tog();
		//printf("https://bbs.eeworld.com.cn/\r\n");
	}
}

 

 

三、程序运行

下载程序后，复位开发板，OLED显示如下