芯片复制CH32V103源程序
芯片复制CH32V103R8T6核心板I2C1同时加载DS3231和IIC接口0.91吋OLED的程序代码，读取DS3231的时间数据，然后显示在OLED上。
源程序如下:
- /*
- *@Note
- 用途：使用I2C1驱动SSD1306主控、i2c接口的0.91吋或0.96吋OLED。
- 如果使用I2C2，需要将SSet_IIC()和ssd1306.h中的OLED_WriteByte()函数中的I2C1改为I2C2
- 并且将Set_IIC()中的 GPIO_Pin_6 | GPIO_Pin_7 改为 GPIO_Pin_10 | GPIO_Pin_11
- */
- #include "codeTab.h"
- #include "ssd1306_i2c.h"
- #include "debug.h"
- /* Global typedef */
- /* Global define */
- /* Global Variable */
- u16 i; //计数用变量
- void Set_IIC(void) //选择I2C1
- {
- I2C_InitTypeDef I2C_InitStructure; //声明i2c
- GPIO_InitTypeDef GPIO_InitStructure; //声明GPIO
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1,ENABLE); //打开i2c1时钟
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE); //打开GPIO时钟
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7; //i2c1引脚
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //GPIO端口输出速率
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;//I2C必须复用开漏输出
- GPIO_Init(GPIOB, &GPIO_InitStructure); //GPIO端口B，SCL-PB10，SDA-PB11
- I2C_DeInit(I2C1); //外设寄存器配置为默认
- I2C_AcknowledgeConfig(I2C1,ENABLE);
- I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
- I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
- I2C_InitStructure.I2C_OwnAddress1 = 0x30;
- I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
- I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
- I2C_InitStructure.I2C_ClockSpeed = 400000;
- I2C_Cmd(I2C1, ENABLE);
- I2C_Init(I2C1, &I2C_InitStructure);
- }
- /************* @以上为i2c设置及数据发送函数 ****************/
- void DS3231_ByteWrite(u8 addr, u8 data)
- {
- I2C_AcknowledgeConfig(I2C1,ENABLE);
- I2C_GenerateSTART(I2C1,ENABLE);
- while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_MODE_SELECT));
- I2C_Send7bitAddress(I2C1,0xD1,I2C_Direction_Transmitter);
- while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
- I2C_SendData(I2C1,addr);
- while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_BYTE_TRANSMITTING));
- I2C_SendData(I2C1,data);
- while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_BYTE_TRANSMITTED));
- I2C_GenerateSTOP(I2C1,ENABLE);
- }
下一篇：芯片复制单片机定时器/计数器
芯片解密
