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這里提供了CH32V103R8T6核心板I2C1同時(shí)加載DS3231和IIC接口0.91吋OLED的程序代碼，讀取DS3231的時(shí)間數(shù)據(jù)，然后顯示在OLED上。
源程序如下:
- /*
- *@Note
- 用途：使用I2C1驅(qū)動(dòng)SSD1306主控、i2c接口的0.91吋或0.96吋OLED。
- 如果使用I2C2，需要將SSet_IIC()和ssd1306.h中的OLED_WriteByte()函數(shù)中的I2C1改為I2C2
- 并且將Set_IIC()中的 GPIO_Pin_6 | GPIO_Pin_7 改為 GPIO_Pin_10 | GPIO_Pin_11
- */
- #include "codeTab.h"
- #include "ssd1306_i2c.h"
- #include "debug.h"
- /* Global typedef */
- /* Global define */
- /* Global Variable */
- u16 i; //計(jì)數(shù)用變量
- void Set_IIC(void) //選擇I2C1
- {
- I2C_InitTypeDef I2C_InitStructure; //聲明i2c
- GPIO_InitTypeDef GPIO_InitStructure; //聲明GPIO
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1,ENABLE); //打開i2c1時(shí)鐘
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE); //打開GPIO時(shí)鐘
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7; //i2c1引腳
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //GPIO端口輸出速率
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;//I2C必須復(fù)用開漏輸出
- GPIO_Init(GPIOB, &GPIO_InitStructure); //GPIO端口B，SCL-PB10，SDA-PB11
- I2C_DeInit(I2C1); //外設(shè)寄存器配置為默認(rèn)
- 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);
- }
- /************* @以上為i2c設(shè)置及數(shù)據(jù)發(fā)送函數(shù) ****************/
- 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);
- }
- u8 DS3231_ByteRead(u8 nAddr)
- {
- I2C_AcknowledgeConfig(I2C1,ENABLE);
- I2C_GenerateSTART(I2C1,ENABLE);
- while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_MODE_SELECT)){;}
- I2C_Send7bitAddress(I2C1,0xD0,I2C_Direction_Transmitter);
- while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED)){;}
- I2C_SendData(I2C1,nAddr);
- while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_BYTE_TRANSMITTED)){;}
- I2C_GenerateSTART(I2C1,ENABLE);
- while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_MODE_SELECT)){;}
- I2C_Send7bitAddress(I2C1,0xD1,I2C_Direction_Receiver);
- while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED)){;}
- I2C_AcknowledgeConfig(I2C1,DISABLE);
- I2C_GenerateSTOP(I2C1,ENABLE);
- while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_BYTE_RECEIVED)){;}
- return I2C_ReceiveData(I2C1);
- }
- u8 BCD2HEX(u8 val) //BCD轉(zhuǎn)換為Byte
- {
- u8 i;
- i= val&0x0f;
- val >>= 4;
- val &= 0x0f;
- val *= 10;
- i += val;
- return i;
- }
- u16 B_BCD(u8 val)//B碼轉(zhuǎn)換為BCD碼
- {
- u8 i,j,k;
- i=val/10;
- j=val%10;
- k=j+(i<<4);
- return k;
- }
- /************* @以上為DS3231相關(guān)函數(shù) ****************/
- int main(void)
- {
- NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
- Delay_Init();
- USART_Printf_Init(115200);
- printf("****************\r\n");
- printf("This is DS3231 example\r\n");
- Set_IIC();
- printf("Set IIC OK!\r\n");
- Delay_Ms(3000);
- OLED_Init(); //OLED初始化
- OLED_Fill(0xff); //滿屏點(diǎn)亮，提示OLED能夠工作
- Delay_Ms(500);
- OLED_Fill(0x00); //清屏
- OLED_ShowStr(0, 0, "I2C1-DS3231-OLED", 2);
- OLED_ShowSZ(0, 32, 2, 2);
- OLED_ShowSZ(0, 40, 2, 2);
- OLED_ShowStr(48, 3, ":",1);
- OLED_ShowSZ(0, 56, 2, 2);
- OLED_ShowSZ(0, 64, 2, 2);
- OLED_ShowStr(72, 3, ":",1);
- OLED_ShowSZ(0, 80, 2, 2);
- OLED_ShowSZ(0, 88, 2, 2);
- u8 tt=0;
- u8 aa=0;
- u8 bb=0;
- while(1)
- {
- printf("********* \r\n");
- tt=BCD2HEX(DS3231_ByteRead(0x06));
- //printf(" year:%d\n",tt);
- tt=BCD2HEX(DS3231_ByteRead(0x05));
- //printf(" month:%d\n",tt);
- tt=BCD2HEX(DS3231_ByteRead(0x04));
- //printf(" day:%d\n",tt);
- tt=BCD2HEX(DS3231_ByteRead(0x02));
- //printf(" hour:%d\n",tt);
- aa=tt/10;
- bb=tt-aa*10;
- OLED_ShowSZ(aa, 32, 2, 2);
- OLED_ShowSZ(bb, 40, 2, 2);
- tt=BCD2HEX(DS3231_ByteRead(0x01));
- //printf(" min:%d\n",tt);
- aa=tt/10;
- bb=tt-aa*10;
- OLED_ShowSZ(aa, 56, 2, 2);
- OLED_ShowSZ(bb, 64, 2, 2);
- tt=BCD2HEX(DS3231_ByteRead(0x00));
- //printf(" sec:%d\n",tt);
- //printf(" ********* %d\n");
- aa=tt/10;
- bb=tt-aa*10;
- OLED_ShowSZ(aa, 80, 2, 2);
- OLED_ShowSZ(bb, 88, 2, 2);
- Delay_Ms(995);
- }
- }
MounRiver_Studio代碼工程下載:51hei附件下載:
test.7z
(338.32 KB, 下載次數(shù): 16)
2022-4-19 16:12 上傳
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