- //I2C初始化
- void I2C_Init(void)
- {
- I2C_InitTypeDef I2C_InitStruct;
- GPIO_InitTypeDef GPIO_InitStructure;
- RCC_AHBPeriphClk_Enable(SDA_GPIO_CRM_CLK, ENABLE);
- RCC_APBPeriphClk_Enable1(RCC_APB1_PERIPH_I2C2, ENABLE);
- PA01_AFx_I2C2SCL();
- PA02_AFx_I2C2SDA();
- GPIO_InitStructure.Pins = SCL_PIN | SDA_PIN;
- GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_OD;
- GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
- GPIO_Init(SCL_GPIO, &GPIO_InitStructure);
- //I2C初始化
- I2C_InitStruct.I2C_BaudEn = ENABLE;
- I2C_InitStruct.I2C_Baud = 0x01; //500K=(8000000/(8*(1+1))
- I2C_InitStruct.I2C_FLT = DISABLE;
- I2C_InitStruct.I2C_AA = DISABLE;
- I2C_Master_Init(I2C_MASTER, &I2C_InitStruct); //初始化模块
- I2C_Cmd(I2C_MASTER, ENABLE); //模块使能
- }
OLED代码:
- //向设备写控制命令
- static void OLED_Write_CMD(unsigned char cmd)
- {
- #ifdef HW_I2C
- unsigned char tx_buf[BUF_SIZE] = {0x00, cmd};
- I2C_MasterSendDataToSlave(CW_I2C2, tx_buf, BUF_SIZE);
- #endif
- #ifdef SW_I2C
- I2C_Start();
- I2C_Send_Byte(0x78);
- I2C_Wait_Ack();
- I2C_Send_Byte(0x00);
- I2C_Wait_Ack();
- I2C_Send_Byte(cmd);
- I2C_Wait_Ack();
- I2C_Stop();
- #endif
- #ifdef HW_SPI
- OLED_CS_LOW;
- OLED_DC_LOW;
- while (SPI_GetFlagStatus(SPI_MASTER, SPI_FLAG_TXE) == RESET);
- SPI_SendData(SPI_MASTER, cmd);
- while (SPI_GetFlagStatus(SPI_MASTER, SPI_FLAG_RXNE) == RESET);
- SPI_ReceiveData(SPI_MASTER);
- OLED_CS_HIGH;
- #endif
- #ifdef SW_SPI
- OLED_CS_LOW;
- OLED_DC_LOW;
- SPI_WriteByte(cmd);
- OLED_CS_HIGH;
- #endif
- }
- //向设备写数据
- static void OLED_Write_Date(unsigned char date)
- {
- #ifdef HW_I2C
- unsigned char tx_buf[BUF_SIZE] = {0x40, date};
- I2C_MasterSendDataToSlave(CW_I2C2, tx_buf, BUF_SIZE);
- #endif
- #ifdef SW_I2C
- I2C_Start();
- I2C_Send_Byte(0x78);
- I2C_Wait_Ack();
- I2C_Send_Byte(0x40);
- I2C_Wait_Ack();
- I2C_Send_Byte(date);
- I2C_Wait_Ack();
- I2C_Stop();
- #endif
- #ifdef HW_SPI
- OLED_CS_LOW;
- OLED_DC_HIGH;
- while (SPI_GetFlagStatus(SPI_MASTER, SPI_FLAG_TXE) == RESET);
- SPI_SendData(SPI_MASTER, date);
- while (SPI_GetFlagStatus(SPI_MASTER, SPI_FLAG_RXNE) == RESET);
- SPI_ReceiveData(SPI_MASTER);
- OLED_CS_HIGH;
- #endif
- #ifdef SW_SPI
- OLED_CS_LOW;
- OLED_DC_HIGH;
- SPI_WriteByte(date);
- OLED_CS_HIGH;
- #endif
- }
- //坐标设置
- static void OLED_Set_Pos(unsigned char x, unsigned char y)
- {
- OLED_Write_CMD(0xB0 + y);
- OLED_Write_CMD(((x & 0xF0) >> 4) | 0x10);
- OLED_Write_CMD(x & 0x0F);
- }
- //开启OLED显示
- static void OLED_Display_On(void)
- {
- OLED_Write_CMD(0x8D); //SET DCDC命令
- OLED_Write_CMD(0x14); //DCDC ON
- OLED_Write_CMD(0xAF); //DISPLAY ON
- }
- //关闭OLED显示
- static void OLED_Display_Off(void)
- {
- OLED_Write_CMD(0x8D); //SET DCDC命令
- OLED_Write_CMD(0x10); //DCDC OFF
- OLED_Write_CMD(0xAE); //DISPLAY OFF
- }
- //OLED清屏
- void OLED_Clear(void)
- {
- unsigned char cnt, count;
- for(cnt = 0; cnt < 8; cnt++)
- {
- OLED_Write_CMD(0xB0 + cnt);
- OLED_Write_CMD(0x00);
- OLED_Write_CMD(0x10);
- for(count = 0; count < 128; count++)
- {
- OLED_Write_Date(0x00);
- }
- }
- }
- //OLED清行
- void OLED_Clear_Row(unsigned char n)
- {
- unsigned char count;
- OLED_Write_CMD(0xB0 + n);
- OLED_Write_CMD(0x00);
- OLED_Write_CMD(0x10);
- for(count = 0; count < 128; count++)
- {
- OLED_Write_Date(0x00);
- }
- }
- //OLED填满屏幕
- void OLED_Fill(void)
- {
- unsigned char cnt, count;
- for(cnt = 0; cnt < 8; cnt++)
- {
- OLED_Write_CMD(0xB0 + cnt); //设置页地址(0~7)
- OLED_Write_CMD(0x00); //设置显示位置—列低地址
- OLED_Write_CMD(0x10); //设置显示位置—列高地址
- for(count = 0; count < 128; count++)
- {
- OLED_Write_Date(0x01);
- }
- }
- }
- //指定位置显示一个字符
- //x:0~127
- //y:0~63
- //chr:字符
- //mode:0,反白显示;1,正常显示
- //size:选择字体 16/12
- void OLED_ShowChar(unsigned char x, unsigned char y, unsigned char chr, unsigned char size)
- {
- unsigned char offset = 0, cnt = 0;
- offset = chr - ' '; //计算偏移量
- if(x > 128 - 1)
- {
- x = 0;
- y = y + 2;
- }
- if(size == 16)
- {
- OLED_Set_Pos(x, y);
- for(cnt = 0; cnt < 8; cnt++)
- {
- OLED_Write_Date(F8x16[offset * 16 + cnt]);
- }
- OLED_Set_Pos(x, y + 1);
- for(cnt = 0; cnt < 8; cnt++)
- {
- OLED_Write_Date(F8x16[offset * 16 + cnt + 8]);
- }
- }
- else
- {
- OLED_Set_Pos(x, y);
- for(cnt = 0; cnt < 6; cnt++)
- {
- OLED_Write_Date(F6x8[offset][cnt]);
- }
- }
- }
- unsigned int oled_pow(unsigned char m, unsigned char n)
- {
- unsigned int result = 1;
- while(n--)
- {
- result *= m;
- }
- return result;
- }
- //指定位置显示一个数字
- //x,y:起点坐标
- //num:数值(0~4294967295)
- //len:数字的位数
- //size:字体大小
- //mode:模式 0,填充模式;1,叠加模式
- void OLED_ShowNum(unsigned char x, unsigned char y, unsigned int num, unsigned char len, unsigned char size)
- {
- unsigned char cnt, temp;
- unsigned char show = 0;
- for(cnt = 0; cnt < len; cnt++)
- {
- temp = (num / oled_pow(10, len - cnt - 1)) % 10;
- if(show == 0 && cnt < (len - 1))
- {
- if(temp == 0)
- {
- OLED_ShowChar(x + (size / 2) * cnt, y, ' ', size);
- continue;
- }
- else
- {
- show = 1;
- }
- }
- OLED_ShowChar(x + (size / 2) * cnt, y, temp + '0', size);
- }
- }
- //指定位置显示字符串
- void OLED_ShowString(unsigned char x, unsigned char y, unsigned char *chr, unsigned char size)
- {
- unsigned char cnt = 0;
- while(chr[cnt] != '\0')
- {
- OLED_ShowChar(x, y, chr[cnt], size);
- x += 8;
- if(x > 120)
- {
- x = 0;
- y += 2;
- }
- cnt++;
- }
- }
- //显示汉字
- void OLED_ShowCHinese(unsigned char x, unsigned char y, unsigned char no)
- {
- unsigned char cnt, addr = 0;
- OLED_Set_Pos(x, y);
- for(cnt = 0; cnt < 16; cnt++)
- {
- OLED_Write_Date(Hzk[2 * no][cnt]);
- addr++;
- }
- OLED_Set_Pos(x, y + 1);
- for(cnt = 0; cnt < 16; cnt++)
- {
- OLED_Write_Date(Hzk[2 * no + 1][cnt]);
- addr++;
- }
- }
- //显示图片
- /*
- @brief 显示图片
- @param x0:起始列地址
- y0:起始页地址
- x1:终止列地址
- y1:终止页地址
- BMP[]:存放图片代码的数组
- @retval 无
- */
- void OLED_DrawBMP(unsigned char x0, unsigned char y0, unsigned char x1, unsigned char y1, unsigned char BMP[])
- {
- unsigned int j = 0; //定义变量
- unsigned char x, y; //定义变量
- if(y1 % 8 == 0)
- {
- y = y1 / 8; //判断终止页是否为8的整数倍
- }
- else
- {
- y = y1 / 8 + 1;
- }
- for(y = y0; y < y1; y++) //从起始页开始,画到终止页
- {
- OLED_Set_Pos(x0, y); //在页的起始列开始画
- for(x = x0; x < x1; x++) //画x1 - x0 列
- {
- OLED_Write_Date(BMP[j++]); //画图片的点
- }
- }
- }
- //显示动图
- /*
- @brief 显示动图
- @param x0:起始列地址
- y0:起始页地址
- x1:终止列地址
- y1:终止页地址
- k: 帧个数
- m: 单帧数组大小
- BMP[][m]:存放动图代码的数组
- @retval 无
- */
- void OLED_DrawGIF(unsigned char x0, unsigned char y0, unsigned char x1, unsigned char y1, unsigned char k, int m, const unsigned char GIF[][m])
- {
- unsigned int j = 0; //定义变量
- unsigned char x, y, i; //定义变量
- if(y1 % 8 == 0)
- {
- y = y1 / 8; //判断终止页是否为8的整数倍
- }
- else
- {
- y = y1 / 8 + 1;
- }
- for (i = 0; i < k; i++) //从第一帧开始画
- {
- j = 0;
- for(y = y0; y < y1; y++) //从起始页开始,画到终止页
- {
- OLED_Set_Pos(x0, y); //在页的起始列开始画
- for(x = x0; x < x1; x++) //画x1 - x0 列
- {
- OLED_Write_Date(GIF[i][j++]); //画图片的点
- }
- }
- //Delay_Ms(80);
- }
- }
- #if defined SW_SPI || defined HW_SPI
- //SPI驱动方式DC、RES引脚初始化
- void OLED_SPI_GPIO_Init(void)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- //根据GPIO组初始化GPIO时钟
- RCC_AHBPeriphClk_Enable( RCC_OLED_DC | RCC_OLED_RES, ENABLE);
- //GPIO_DC初始化设置
- GPIO_InitStructure.Pins = PIN_OLED_DC;
- GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
- GPIO_InitStructure.IT = GPIO_IT_NONE;
- GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
- GPIO_Init(PORT_OLED_DC, &GPIO_InitStructure);
- //GPIO_RES初始化设置
- GPIO_InitStructure.Pins = PIN_OLED_RES;
- GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
- GPIO_InitStructure.IT = GPIO_IT_NONE;
- GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
- GPIO_Init(PORT_OLED_RES, &GPIO_InitStructure);
- OLED_RES_LOW;
- Delay_Ms(200);
- OLED_RES_HIGH;
- }
- #endif
- //OLED初始化
- void OLED_Init(void)
- {
- #ifdef SW_I2C
- I2C_Init();
- #endif
- #ifdef HW_I2C
- I2C_Init();
- #endif
- #ifdef SW_SPI
- SPI_Initial();
- OLED_SPI_GPIO_Init();
- #endif
- #ifdef HW_SPI
- SPI_Initial();
- OLED_SPI_GPIO_Init();
- #endif
- Delay_Ms(200);
- OLED_Write_CMD(0xAE); //display off
- OLED_Write_CMD(0x00); //set low column address
- OLED_Write_CMD(0x10); //set high column address
- OLED_Write_CMD(0x40); //set start line address
- OLED_Write_CMD(0xB0); //set page address
- OLED_Write_CMD(0x81); //contract control
- OLED_Write_CMD(0xFF); //128
- OLED_Write_CMD(0xA1); //set segment remap
- OLED_Write_CMD(0xA6); //normal / reverse
- OLED_Write_CMD(0xA8); //set multiplex ratio(1 to 64)
- OLED_Write_CMD(0x3F); //1/32 duty
- OLED_Write_CMD(0xC8); //Com scan direction
- OLED_Write_CMD(0xD3); //set display offset
- OLED_Write_CMD(0x00); //
- OLED_Write_CMD(0xD5); //set osc division
- OLED_Write_CMD(0x80); //
- OLED_Write_CMD(0xD8); //set area color mode off
- OLED_Write_CMD(0x05); //
- OLED_Write_CMD(0xD9); //Set Pre-Charge Period
- OLED_Write_CMD(0xF1); //
- OLED_Write_CMD(0xDA); //set com pin configuartion
- OLED_Write_CMD(0x12); //
- OLED_Write_CMD(0xDB); //set Vcomh
- OLED_Write_CMD(0x30); //
- OLED_Write_CMD(0x8D); //set charge pump enable
- OLED_Write_CMD(0x14); //
- OLED_Write_CMD(0xAF); //turn on oled panel
- }
运行测试
测试代码
CW32F030CxTx_HW_I2C_OLED.zip
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