基于NV32F100 MCU的OLED屏RTC计时器

ID:776997 · 发表于 2020-8-15 10:54

OLED屏是一种小巧的显示器件，特别是I2C接口的OLED 屏更能节省I/O口资源。本次使用的是一款0.91'的单色OLED屏，它比常规的OLED屏要长且窄，故更适于显示信息和参数，也更适于用在便携装置上。

1. OLED屏显示

1）OLED屏与NV32F100的连接关系如下：

SCL --- PE1

SDA --- PE0

2）为进行显示定义引脚输出高低电平的语句为：

#defineOLED_SCLK_Clr() GPIO_PinClear(GPIO_PTE1);

#defineOLED_SCLK_Set() GPIO_PinSet(GPIO_PTE1);

#defineOLED_SDIN_Clr() GPIO_PinClear(GPIO_PTE0);

#defineOLED_SDIN_Set() GPIO_PinSet(GPIO_PTE0);

3）OLED屏初始化函数为：

void OLED_Init(void)
{
Delay_1ms(800);
OLED_WR_Byte(0xAE,OLED_CMD);//--display off
OLED_WR_Byte(0x40,OLED_CMD);//--set start line address
OLED_WR_Byte(0xB0,OLED_CMD);//--set page address
OLED_WR_Byte(0xC8,OLED_CMD);//Com scan direction
OLED_WR_Byte(0x81,OLED_CMD); // contract control
OLED_WR_Byte(0xFF,OLED_CMD);//--128
OLED_WR_Byte(0xA1,OLED_CMD);//set segment remap
OLED_WR_Byte(0xA6,OLED_CMD);//--normal / reverse
OLED_WR_Byte(0xA8,OLED_CMD);//--set multiplex ratio(1 to 64)
OLED_WR_Byte(0x1F,OLED_CMD);//--1/32 duty
OLED_WR_Byte(0xD3,OLED_CMD);//-set display offset
OLED_WR_Byte(0x00,OLED_CMD);
OLED_WR_Byte(0xD5,OLED_CMD);//set osc division
OLED_WR_Byte(0xF0,OLED_CMD);
OLED_WR_Byte(0xD9,OLED_CMD);//Set Pre-Charge Period
OLED_WR_Byte(0x22,OLED_CMD);
OLED_WR_Byte(0xDA,OLED_CMD);//set com pin configuartion
OLED_WR_Byte(0x02,OLED_CMD);
OLED_WR_Byte(0xDB,OLED_CMD);//set Vcomh
OLED_WR_Byte(0x49,OLED_CMD);//30
OLED_WR_Byte(0x8D,OLED_CMD);//set charge pump enable
OLED_WR_Byte(0x14,OLED_CMD);
OLED_WR_Byte(0xAF,OLED_CMD);//--turn on oled panel
OLED_Clear();
}
4）字符串显示函数为：
void OLED_ShowChar(unsigned char x,unsigned char y,unsigned char chr,unsigned char Char_Size)
{
unsigned char c=0,i=0;
c=chr-' ';
if(x>Max_Column-1){x=0;y=y+2;}
if(Char_Size ==16)
{
OLED_Set_Pos(x,y);
for(i=0;i<8;i++)
OLED_WR_Byte(F8X16[c*16+i],OLED_DATA);
OLED_Set_Pos(x,y+1);
for(i=0;i<8;i++)
OLED_WR_Byte(F8X16[c*16+i+8],OLED_DATA);
}
else
{
OLED_Set_Pos(x,y);
for(i=0;i<6;i++)
OLED_WR_Byte(F6x8[c][i],OLED_DATA);
}
}