今天搞了一下OLED。模拟I2C时序。
PC0接SCL，PC1接SDA。
代码：
#include "main.h"
#include "oled.h"
/** @addtogroup Examples
@{
*/
uint8_t temp;
uint8_t txBuffer[50];
uint8_t rxBuffer[10];
uint8_t cord_h,cord_l;//???????
volatile uint32_t nBytesRead = 0;
//volatile bool txThresholdEventReceived = false;
//volatile bool rxThresholdEventReceived = false;
/** @addtogroup USART_Printf
@{
*/
/** @addtogroup USART_Printf_Variables Variables
@{
*/
volatile uint32_t tick = 0;
uint8_t txBuf[] = "Key Value = : \r\n";
/**@} end of group USART_Printf_Variables */
void DelayMs(uint16_t nms)
{
uint16_t i,j;
for(i=0;i<nms;i++)
for(j=0;j<200;j++);
}
/** @addtogroup USART_Printf_Functions Functions
@{
*/
//void PORT_Initialize1(void)
//{
// /************************** GROUP 0 Initialization *************************/
// GPIO_Config_T GPIO_ConfigStruct;
// /************************** GROUP 1 Initialization *************************/
// RCM_EnableAPB2PeriphClock(RCM_APB2_PERIPH_GPIOA | RCM_APB2_PERIPH_GPIOC);
//
// GPIO_ConfigStruct.mode = GPIO_MODE_OUT_PP;
// GPIO_ConfigStruct.pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3;
// GPIO_ConfigStruct.speed = GPIO_SPEED_50MHz;
// GPIO_Config(GPIOC, &GPIO_ConfigStruct);
// GPIO_ConfigStruct.mode = GPIO_MODE_IN_PU;
// GPIO_ConfigStruct.pin = GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7;
// GPIO_ConfigStruct.speed = GPIO_SPEED_50MHz;
// GPIO_Config(GPIOA, &GPIO_ConfigStruct);
//}
//void PORT_Initialize2(void)
//{
// GPIO_Config_T GPIO_ConfigStruct;
// /************************** GROUP 1 Initialization *************************/
// RCM_EnableAPB2PeriphClock(RCM_APB2_PERIPH_GPIOA | RCM_APB2_PERIPH_GPIOC);
//
// GPIO_ConfigStruct.mode = GPIO_MODE_OUT_PP;
// GPIO_ConfigStruct.pin = GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7;
// GPIO_ConfigStruct.speed = GPIO_SPEED_50MHz;
// GPIO_Config(GPIOA, &GPIO_ConfigStruct);
// GPIO_ConfigStruct.mode = GPIO_MODE_IN_PU;
// GPIO_ConfigStruct.pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3;
// GPIO_ConfigStruct.speed = GPIO_SPEED_50MHz;
// GPIO_Config(GPIOC, &GPIO_ConfigStruct);
//}
/*!
* [url=home.php?mod=space&uid=247401]@brief[/url] Main program
*
* @param None
*
* @retval None
*
*/
int main(void)
{
uint8_t i;
GPIO_Config_T GPIO_ConfigStruct;
USART_Config_T USART_ConfigStruct;
APM_MINI_LEDInit(LED2);
RCM_EnableAPB2PeriphClock((RCM_APB2_PERIPH_T)(RCM_APB2_PERIPH_GPIOA | RCM_APB2_PERIPH_USART1));
GPIO_ConfigStruct.mode = GPIO_MODE_AF_PP;
GPIO_ConfigStruct.pin = GPIO_PIN_9;
GPIO_ConfigStruct.speed = GPIO_SPEED_50MHz;
GPIO_Config(GPIOA, &GPIO_ConfigStruct);
USART_ConfigStruct.baudRate = 115200;
USART_ConfigStruct.hardwareFlow = USART_HARDWARE_FLOW_NONE;
USART_ConfigStruct.mode = USART_MODE_TX;
USART_ConfigStruct.parity = USART_PARITY_NONE;
USART_ConfigStruct.stopBits = USART_STOP_BIT_1;
USART_ConfigStruct.wordLength = USART_WORD_LEN_8B;
USART_Config(USART1, &USART_ConfigStruct);
USART_Enable(USART1);
SysTick_Config(SystemCoreClock / 1000);
I2C_Init();
OLED_Init();
// OLED_ShowChar(0,0,'1',16);
//OLED_ShowNum(0,2,123,3,16);
OLED_ShowString(10,0,"21ic",16);
OLED_ShowCHinese(10,2,0);
OLED_ShowCHinese(26,2,1);
OLED_ShowCHinese(42,2,2);
OLED_ShowCHinese(58,2,3);
OLED_ShowCHinese(74,2,4);
while(1)
{
for(i = 0; i < sizeof(txBuf); i++)
{
while(USART_ReadStatusFlag(USART1, USART_FLAG_TXBE) == RESET);
USART_TxData(USART1, txBuf[i]);
}
}
}
/*!
* @brief Delay
*
* @param None
*
* @retval None
*
*/
void Delay(void)
{
tick = 0;
while(tick < 500);
}
/**@} end of group USART_Printf_Functions */
/**@} end of group USART_Printf */
/**@} end of group Examples */
#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
/**
* @brief Write_I2C_Data 向OLED写入数据
* @param I2C_Data：数据
* @retval 无
*/
/**********************************************************************************************************
* 函 数 名: AT24Cxx_WriteOneByte
* 功能说明: AT24Cxx_WriteOneByte 写一个字节
* 形 参：无
* 返 回 值: 无
**********************************************************************************************************/
void WriteOneByte1(u8 dt)
{
I2C_Start();
I2C_Send_Byte(0x78);//器件地址+数据地址
I2C_Wait_Ack();
I2C_Send_Byte(0x40);//双字节是数据地址低位
//单字节是数据地址低位
I2C_Wait_Ack();
I2C_Send_Byte(dt);
I2C_Wait_Ack();
I2C_Stop();
//delay_ms(10);
}
void WriteOneByte2(u8 dt)
{
I2C_Start();
I2C_Send_Byte(0x78);//器件地址+数据地址
I2C_Wait_Ack();
I2C_Send_Byte(0x00);//双字节是数据地址低位
//单字节是数据地址低位
I2C_Wait_Ack();
I2C_Send_Byte(dt);
I2C_Wait_Ack();
I2C_Stop();
//delay_ms(10);
}
static void Write_I2C_Data(uint8_t I2C_Data)//写数据
{
WriteOneByte1(I2C_Data);
}
/**
* @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
{
WriteOneByte2(I2C_Command);
}
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);
}
}
//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)
{
long int i;
for(i=0;i<20000;i++);
//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();
}
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