今天捣鼓了一下OLED
代码:
#include "at32f4xx.h"
#include "at32f4xx_i2c_ex.h"
#include "stdio.h"
#include "string.h"
#include "at32_board.h"
#include "oled.h"
/** @addtogroup AT32F407_StdPeriph_Examples
* @{
*/
/** @addtogroup Poll_MA_TX&SLA_RX
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define MASTER_BOARD
/* Private macro -------------------------------------------------------------*/
#define BUF_SIZE 8
/* Private variables ---------------------------------------------------------*/
u8 tx_buf[BUF_SIZE] = {0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8};
u8 rx_buf[BUF_SIZE] = {0};
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/**
* [url=home.php?mod=space&uid=247401]@brief[/url] Error handler program
* @param I2C_Status
* @retval None
*/
void Error_Handler(I2C_StatusType I2C_Status)
{
printf("Proc error I2C_ERROR_STEP_%d!!!\r\n", I2C_Status);
}
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
AT32_Board_Init();
//UART_Print_Init(115200);
I2Cx_Init(I2C_PORT);
//printf("Polling - Master Transmitter & Slave Receiver.\r\n");
OLED_Init();
fill_picture(0xff);
Ddl_Delay1ms(1000);
OLED_Clear();
OLED_ShowCHinese(16,0,5);//
OLED_ShowCHinese(32,0,6);//
OLED_ShowCHinese(48,0,7);//
OLED_ShowCHinese(64,0,8);//
OLED_ShowCHinese(80,0,9);//
OLED_ShowCHinese(96,0,10);//
OLED_ShowString(8,2,"AT32F407--21ic",16);
//OLED_ShowChar1(0,2,'1',16);
while(1)
{
}
}
#include "oled.h"
//OLED的显存
//存放格式如下.
//[0]0 1 2 3 ... 127
//[1]0 1 2 3 ... 127
//[2]0 1 2 3 ... 127
//[3]0 1 2 3 ... 127
//[4]0 1 2 3 ... 127
//[5]0 1 2 3 ... 127
//[6]0 1 2 3 ... 127
//[7]0 1 2 3 ... 127
void Ddl_Delay1ms(unsigned int x)
{
unsigned int i,j;
for(i=0;i<x;i++)
for(j=0;j<200;j++);
}
/**
* @brief Write_I2C_Data 向OLED写入数据
* @param I2C_Data:数据
* @retval 无
*/
static void Write_I2C_Data(uint8_t I2C_Data)//写数据
{
I2C_Master_Transmit1(I2C_PORT, OLED_ADDS, I2C_Data, 10000);
}
/**
* @brief Write_I2C_Command,向OLED写入命令
* @param I2C_Command
* @retval 无
*/
static void Write_I2C_Command(uint8_t I2C_Command)//写命令
{
I2C_Master_Transmit2(I2C_PORT, OLED_ADDS, I2C_Command, 10000);
}
void OLED_WR_Byte(unsigned dat,unsigned cmd)
{
if(cmd)
Write_I2C_Data(dat);
else
Write_I2C_Command(dat);
}
/********************************************
// fill_Picture
********************************************/
void fill_picture(uint8_t fill_Data)
{
uint8_t m,n;
for(m=0; m<8; m++)
{
OLED_WR_Byte(0xb0+m,0); //page0-page1
OLED_WR_Byte(0x00,0); //low column start address
OLED_WR_Byte(0x10,0); //high column start address
for(n=0; n<128; n++)
{
OLED_WR_Byte(fill_Data,1);
}
}
}
//坐标设置
void OLED_Set_Pos(uint8_t x, uint8_t y)
{
OLED_WR_Byte(0xb0+y, OLED_CMD);
OLED_WR_Byte(((x&0xf0)>>4)|0x10, OLED_CMD);
OLED_WR_Byte((x&0x0f), OLED_CMD);
}
//开启OLED显示
void OLED_Display_On(void)
{
OLED_WR_Byte(0X8D, OLED_CMD); //SET DCDC命令
OLED_WR_Byte(0X14, OLED_CMD); //DCDC ON
OLED_WR_Byte(0XAF, OLED_CMD); //DISPLAY ON
}
//关闭OLED显示
void OLED_Display_Off(void)
{
OLED_WR_Byte(0X8D, OLED_CMD); //SET DCDC命令
OLED_WR_Byte(0X10, OLED_CMD); //DCDC OFF
OLED_WR_Byte(0XAE, OLED_CMD); //DISPLAY OFF
}
//清屏函数,清完屏,整个屏幕是黑色的!和没点亮一样!!!
void OLED_Clear(void)
{
uint8_t i,n;
for(i=0; i<8; i++)
{
OLED_WR_Byte (0xb0+i, OLED_CMD); //设置页地址(0~7)
OLED_WR_Byte (0x00, OLED_CMD); //设置显示位置—列低地址
OLED_WR_Byte (0x10, OLED_CMD); //设置显示位置—列高地址
for(n=0; n<128; n++)
OLED_WR_Byte(0, OLED_DATA);
}
}
void OLED_ON(void)
{
uint8_t i,n;
for(i=0; i<8; i++)
{
OLED_WR_Byte (0xb0+i,OLED_CMD); //设置页地址(0~7)
OLED_WR_Byte (0x00,OLED_CMD); //设置显示位置—列低地址
OLED_WR_Byte (0x10,OLED_CMD); //设置显示位置—列高地址
for(n=0; n<128; n++)
OLED_WR_Byte(1, OLED_DATA);
}
}
//在指定位置显示一个字符,包括部分字符
//x:0~127
//y:0~63
//mode:0,反白显示;1,正常显示
//size:选择字体 16/12
void OLED_ShowChar(uint8_t x,uint8_t y,uint8_t chr,uint8_t Char_Size)
{
uint8_t c=0,i=0;
c=chr-' ';//得到偏移后的值
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);
}
}
void OLED_ShowChar1(uint8_t x,uint8_t y,uint8_t chr,uint8_t Char_Size)
{
uint8_t c=0,i=0;
c=chr-'0';//得到偏移后的值
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(F816[c*16 + i], OLED_DATA);
OLED_Set_Pos(x, y+1);
for(i=0; i<8; i++)
OLED_WR_Byte(F816[c*16 + i + 8], OLED_DATA);
}
}
//m^n函数
uint32_t OLED_pow(uint8_t m, uint8_t n)
{
uint32_t result = 1;
while(n--)
result *= m;
return result;
}
//显示2个数字
//x,y :起点坐标
//len :数字的位数
//size:字体大小
//mode:模式 0,填充模式;1,叠加模式
//num:数值(0~4294967295);
void OLED_ShowNum(uint8_t x, uint8_t y, uint32_t num, uint8_t len, uint8_t size2)
{
uint8_t t,temp;
uint8_t enshow = 0;
for(t=0; t<len; t++)
{
temp = (num/OLED_pow(10, len-t-1)) %10;
if(enshow == 0 && t<(len-1))
{
if(temp == 0)
{
OLED_ShowChar(x+(size2/2)*t, y, ' ', size2);
continue;
}
else
enshow = 1;
}
OLED_ShowChar(x+(size2/2)*t, y, temp+'0', size2);
}
}
//显示一个字符号串
void OLED_ShowString(uint8_t x, uint8_t y, char *chr, uint8_t Char_Size)
{
uint8_t j=0;
while (chr[j] != '\0')
{
OLED_ShowChar(x, y, chr[j], Char_Size);
x += 8;
if(x>120)
{
x=0;
y+=2;
}
j++;
}
}
//显示汉字
void OLED_ShowCHinese(uint8_t x, uint8_t y, uint8_t no)
{
uint8_t t,adder=0;
OLED_Set_Pos(x,y);
for(t=0;t<16;t++)
{
OLED_WR_Byte(Hzk[2*no][t],OLED_DATA);
adder+=1;
}
OLED_Set_Pos(x,y+1);
for(t=0;t<16;t++)
{
OLED_WR_Byte(Hzk[2*no+1][t],OLED_DATA);
adder+=1;
}
}
/***********功能描述:
显示显示BMP图片128×64起始点坐标(x,y),x的范围0~127,y为页的范围0~7
*****************/
void OLED_DrawBMP(uint8_t x0, uint8_t y0,uint8_t x1, uint8_t y1, uint8_t BMP[])
{
unsigned int j=0;
uint8_t x,y;
if(y1%8 == 0)
y = y1/8;
else
y = y1/8 + 1;
for(y=y0; y<y1; y++)
{
OLED_Set_Pos(x0, y);
for(x=x0; x<x1; x++)
{
OLED_WR_Byte(BMP[j++], OLED_DATA);
}
}
}
//初始化SSD1306
void OLED_Init(void)
{
Ddl_Delay1ms(100);
OLED_WR_Byte(0xAE,OLED_CMD);//关闭显示
OLED_WR_Byte(0x40,OLED_CMD);//---set low column address
OLED_WR_Byte(0xB0,OLED_CMD);//---set high column address
OLED_WR_Byte(0xC8,OLED_CMD);//-not offset
OLED_WR_Byte(0x81,OLED_CMD);//设置对比度
OLED_WR_Byte(0xff,OLED_CMD);
OLED_WR_Byte(0xa1,OLED_CMD);//段重定向设置
OLED_WR_Byte(0xa6,OLED_CMD);//
OLED_WR_Byte(0xa8,OLED_CMD);//设置驱动路数
OLED_WR_Byte(0x1f,OLED_CMD);
OLED_WR_Byte(0xd3,OLED_CMD);
OLED_WR_Byte(0x00,OLED_CMD);
OLED_WR_Byte(0xd5,OLED_CMD);
OLED_WR_Byte(0xf0,OLED_CMD);
OLED_WR_Byte(0xd9,OLED_CMD);
OLED_WR_Byte(0x22,OLED_CMD);
OLED_WR_Byte(0xda,OLED_CMD);
OLED_WR_Byte(0x02,OLED_CMD);
OLED_WR_Byte(0xdb,OLED_CMD);
OLED_WR_Byte(0x49,OLED_CMD);
OLED_WR_Byte(0x8d,OLED_CMD);
OLED_WR_Byte(0x14,OLED_CMD);
OLED_WR_Byte(0xaf,OLED_CMD);
OLED_Clear();
}
效果图:
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