- YUYY_SOFTIIC_DEV_Type siic;
- void app_SoftI2cInit()
- {
- GPIO_Config_T gpioConfigStruct;
- RCM_EnableAHB1PeriphClock(RCM_AHB1_PERIPH_GPIOB);
- GPIO_ConfigStructInit(&gpioConfigStruct);
- gpioConfigStruct.mode = GPIO_MODE_OUT;
- gpioConfigStruct.speed = GPIO_SPEED_100MHz;
- gpioConfigStruct.pin = GPIO_PIN_6 | GPIO_PIN_7;
- gpioConfigStruct.otype = GPIO_OTYPE_OD;
- gpioConfigStruct.pupd = GPIO_PUPD_NOPULL;
- GPIO_Config(GPIOB, &gpioConfigStruct);
-
- siic.scl.gpio = GPIOB;
- siic.scl.pin = GPIO_PIN_6;
- siic.sda.gpio = GPIOB;
- siic.sda.pin = GPIO_PIN_7;
- YUYY_SOFTIIC_Init(&siic);
- }
模拟I2C代码
- #define YUYY_SOFT_IIC_ACK 0
- #define YUYY_SOFT_IIC_NACK 1
- #define YUYY_SOFT_IIC_PIN_SDA 0
- #define YUYY_SOFT_IIC_PIN_SCL 1
- void YUYY_SOFTIIC_GPIO_INOUT(YUYY_SOFTIIC_DEV_Type *iicx,uint8_t pin,uint8_t inout)
- {
- if(pin == YUYY_SOFT_IIC_PIN_SDA)
- iicx->gpio_inout_func(&(iicx->sda),inout);
- else if(pin == YUYY_SOFT_IIC_PIN_SCL)
- iicx->gpio_inout_func(&(iicx->scl),inout);
- }
- void YUYY_SOFTIIC_GPIO_SETLEV(YUYY_SOFTIIC_DEV_Type *iicx,uint8_t pin,YUYY_GPIO_LEV_TYPE lev)
- {
- if(pin == YUYY_SOFT_IIC_PIN_SDA)
- iicx->gpio_setlev_func(&(iicx->sda),lev);
- else if(pin == YUYY_SOFT_IIC_PIN_SCL)
- iicx->gpio_setlev_func(&(iicx->scl),lev);
- }
- YUYY_GPIO_LEV_TYPE YUYY_SOFTIIC_GPIO_GETLEV(YUYY_SOFTIIC_DEV_Type *iicx,uint8_t pin)
- {
- if(pin == YUYY_SOFT_IIC_PIN_SDA)
- return iicx->gpio_getlev_func(&(iicx->sda));
- else if(pin == YUYY_SOFT_IIC_PIN_SCL)
- return iicx->gpio_getlev_func(&(iicx->scl));
- return YUYY_GPIO_LEV0;
- }
- void YUYY_SOFTIIC_DELAYMS(YUYY_SOFTIIC_DEV_Type *iicx,uint32_t delay)
- {
- iicx->iic_delayus_func(delay);
- }
- uint8_t YUYY_SOFTIIC_WaitScl_Timeout(YUYY_SOFTIIC_DEV_Type *iicx,YUYY_GPIO_LEV_TYPE lev)
- {
- uint8_t i = 0;
- while(YUYY_SOFTIIC_GPIO_GETLEV(iicx,YUYY_SOFT_IIC_PIN_SCL) != YUYY_GPIO_LEV1)
- {
- i += 1;
- if (i == 10)
- {
- return 1;
- }
- YUYY_SOFTIIC_DELAYMS(iicx,iicx->iic_delay_time);
- }
- return 0;
- }
- uint8_t YUYY_SOFTIIC_Start(YUYY_SOFTIIC_DEV_Type *iicx)
- {
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SDA,YUYY_GPIO_ODOUT);
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_ODOUT);
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SDA,YUYY_GPIO_LEV1);
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_LEV1);
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_ODIN);
- if(YUYY_SOFTIIC_WaitScl_Timeout(iicx,YUYY_GPIO_LEV1))
- return 1;
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_ODOUT);
- YUYY_SOFTIIC_DELAYMS(iicx,iicx->iic_delay_time);
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SDA,YUYY_GPIO_LEV0);
- YUYY_SOFTIIC_DELAYMS(iicx,5*iicx->iic_delay_time);
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_LEV0);
- YUYY_SOFTIIC_DELAYMS(iicx,iicx->iic_delay_time);
- return YUYY_SOFTIIC_OK;
- }
- uint8_t YUYY_SOFTIIC_Stop(YUYY_SOFTIIC_DEV_Type *iicx)
- {
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SDA,YUYY_GPIO_ODOUT);
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_ODOUT);
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SDA,YUYY_GPIO_LEV0);
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_LEV1);
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_ODIN);
- if(YUYY_SOFTIIC_WaitScl_Timeout(iicx,YUYY_GPIO_LEV1))
- return 1;
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_ODOUT);
- YUYY_SOFTIIC_DELAYMS(iicx,iicx->iic_delay_time);
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SDA,YUYY_GPIO_LEV1);
- return YUYY_SOFTIIC_OK;
- }
- uint8_t YUYY_SOFTIIC_ReadACK(YUYY_SOFTIIC_DEV_Type *iicx)
- {
- uint8_t i=0,ack=YUYY_SOFT_IIC_ACK;
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SDA,YUYY_GPIO_ODIN);
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_LEV1);
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_ODIN);
- if(YUYY_SOFTIIC_WaitScl_Timeout(iicx,YUYY_GPIO_LEV1))
- return 1;
-
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_ODOUT);
- YUYY_SOFTIIC_DELAYMS(iicx,iicx->iic_delay_time);
- while(YUYY_SOFTIIC_GPIO_GETLEV(iicx,YUYY_SOFT_IIC_PIN_SDA)!=YUYY_GPIO_LEV0 && i<10)
- {
- YUYY_SOFTIIC_DELAYMS(iicx,iicx->iic_delay_time);
- i += 1;
- }
- if(i>8)
- ack = YUYY_SOFT_IIC_NACK;
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_LEV0);
- YUYY_SOFTIIC_DELAYMS(iicx,iicx->iic_delay_time);
- return ack;
- }
- uint8_t YUYY_SOFTIIC_SendACK(YUYY_SOFTIIC_DEV_Type *iicx,uint8_t ack)
- {
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SDA,YUYY_GPIO_ODOUT);
- if(ack == YUYY_SOFT_IIC_ACK)
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SDA,YUYY_GPIO_LEV0);
- else
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SDA,YUYY_GPIO_LEV1);
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_LEV1);
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_ODIN);
- if(YUYY_SOFTIIC_WaitScl_Timeout(iicx,YUYY_GPIO_LEV1))
- return 1;
-
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_ODOUT);
- YUYY_SOFTIIC_DELAYMS(iicx,iicx->iic_delay_time);
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_LEV0);
- YUYY_SOFTIIC_DELAYMS(iicx,iicx->iic_delay_time);
- return YUYY_SOFTIIC_OK;
- }
- uint8_t YUYY_SOFTIIC_SendByte(YUYY_SOFTIIC_DEV_Type *iicx,uint8_t dat)
- {
- uint8_t i = 0;
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SDA,YUYY_GPIO_ODOUT);
- while(i<8)
- {
- if(dat & 0x80)
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SDA,YUYY_GPIO_LEV1);
- else
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SDA,YUYY_GPIO_LEV0);
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_LEV1);
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_ODIN);
- if(YUYY_SOFTIIC_WaitScl_Timeout(iicx,YUYY_GPIO_LEV1))
- return 1;
-
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_ODOUT);
- YUYY_SOFTIIC_DELAYMS(iicx,iicx->iic_delay_time);
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_LEV0);
- YUYY_SOFTIIC_DELAYMS(iicx,iicx->iic_delay_time);
- dat = dat << 1;
- i += 1;
- }
- return YUYY_SOFTIIC_OK;
- }
- uint8_t YUYY_SOFTIIC_ReadByte(YUYY_SOFTIIC_DEV_Type *iicx,uint8_t *dat)
- {
- uint8_t i = 0;
- *dat = 0;
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SDA,YUYY_GPIO_ODIN);
- while(i<8)
- {
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_LEV1);
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_ODIN);
- if(YUYY_SOFTIIC_WaitScl_Timeout(iicx,YUYY_GPIO_LEV1))
- return 1;
-
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_ODOUT);
- YUYY_SOFTIIC_DELAYMS(iicx,iicx->iic_delay_time);
- *dat = *dat << 1;
- if(YUYY_SOFTIIC_GPIO_GETLEV(iicx,YUYY_SOFT_IIC_PIN_SDA) == YUYY_GPIO_LEV1)
- *dat |= 0x01;
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_LEV0);
- YUYY_SOFTIIC_DELAYMS(iicx,iicx->iic_delay_time);
- i += 1;
- }
- return YUYY_SOFTIIC_OK;
- }
- void YUYY_SOFTIIC_Init(YUYY_SOFTIIC_DEV_Type *iicx)
- {
- if(!iicx->iic_delayus_func)
- {
- iicx->iic_delayus_func = YUYY_DelayUs;
- iicx->iic_delay_time = 1;
- }
- if(!iicx->gpio_inout_func)
- iicx->gpio_inout_func = YUYY_GPIO_ODInOut;
- if(!iicx->gpio_setlev_func)
- iicx->gpio_setlev_func = YUYY_GPIO_SetLev;
- if(!iicx->gpio_getlev_func)
- iicx->gpio_getlev_func = YUYY_GPIO_GetLev;
- //SDA SCL需接上拉电阻,开漏输出
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SDA,YUYY_GPIO_ODOUT);
- YUYY_SOFTIIC_GPIO_INOUT(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_ODOUT);
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SDA,YUYY_GPIO_LEV1);
- YUYY_SOFTIIC_GPIO_SETLEV(iicx,YUYY_SOFT_IIC_PIN_SCL,YUYY_GPIO_LEV1);
- //YUYY_SOFTIIC_Stop(iicx);
- }
- //此处设备地址已经过移位处理,最低位0写1读
- uint8_t YUYY_SOFTIIC_MasterSendStart(YUYY_SOFTIIC_DEV_Type *iicx,uint8_t devaddr)
- {
- if(YUYY_SOFTIIC_Start(iicx) != YUYY_SOFTIIC_OK)
- return 1;
- if(YUYY_SOFTIIC_SendByte(iicx,devaddr) != YUYY_SOFTIIC_OK)
- return 2;
-
- if(YUYY_SOFTIIC_ReadACK(iicx) != YUYY_SOFT_IIC_ACK)
- return 3;
- return 0;
- }
- uint8_t YUYY_SOFTIIC_MasterSendDatasWithOption(YUYY_SOFTIIC_DEV_Type *iicx,uint8_t devaddr,uint8_t option,uint8_t *datas,uint16_t datalen)
- {
- uint8_t i = 0,err = YUYY_SOFTIIC_OK;
- if(!iicx)
- return 1;
- if(option & YUYY_IIC_SEND_START)
- {
- err = YUYY_SOFTIIC_MasterSendStart(iicx,(devaddr<<1)&0xFE);
- if(err != YUYY_SOFTIIC_OK)
- return err;
- }
- while (i < datalen)
- {
- YUYY_SOFTIIC_SendByte(iicx,datas[i]);
- if(YUYY_SOFTIIC_ReadACK(iicx) != YUYY_SOFT_IIC_ACK)
- return 4;
- i += 1;
- }
- if(option & YUYY_IIC_SEND_STOP)
- YUYY_SOFTIIC_Stop(iicx);
- return YUYY_SOFTIIC_OK;
- }
- uint8_t YUYY_SOFTIIC_MasterReadDatasWithOption(YUYY_SOFTIIC_DEV_Type *iicx,uint8_t devaddr,uint8_t option,uint8_t *datas,uint16_t datalen)
- {
- uint8_t i = 0,err = YUYY_SOFTIIC_OK,ack;
- if(!iicx)
- return 1;
- if(option & YUYY_IIC_SEND_START)
- {
- err = YUYY_SOFTIIC_MasterSendStart(iicx,(devaddr<<1)|0x01);
- if(err != YUYY_SOFTIIC_OK)
- return err;
- }
- while (i < datalen)
- {
- if(YUYY_SOFTIIC_ReadByte(iicx,&datas[i]) != YUYY_SOFTIIC_OK)
- return 4;
- if(i==datalen-1)
- ack = YUYY_SOFT_IIC_NACK;
- else
- ack = YUYY_SOFT_IIC_ACK;
- if(YUYY_SOFTIIC_SendACK(iicx,ack) != YUYY_SOFTIIC_OK)
- return 5;
- i += 1;
- }
- if(option & YUYY_IIC_SEND_STOP)
- YUYY_SOFTIIC_Stop(iicx);
- return YUYY_SOFTIIC_OK;
- }
- uint8_t testerr = 0;
- uint8_t YUYY_SOFTIIC_MasterSendRegDatas(YUYY_SOFTIIC_DEV_Type *iicx,uint8_t devaddr,uint8_t *reg,uint8_t reglen,uint8_t *datas,uint16_t datalen)
- {
- uint8_t i = 0,ack = YUYY_SOFT_IIC_ACK,err = YUYY_SOFTIIC_OK;
- if(!iicx)
- return 1;
- err = YUYY_SOFTIIC_MasterSendDatasWithOption(iicx,devaddr,YUYY_IIC_SEND_START,reg,reglen);
- testerr = err;
- if(err == YUYY_SOFTIIC_OK)
- err = YUYY_SOFTIIC_MasterSendDatasWithOption(iicx,devaddr,YUYY_IIC_SEND_STOP,datas,datalen);
- testerr = err;
- return err;
- }
- uint8_t YUYY_SOFTIIC_MasterReadRegDatas(YUYY_SOFTIIC_DEV_Type *iicx,uint8_t devaddr,uint8_t *reg,uint8_t reglen,uint8_t *datas,uint16_t datalen)
- {
- uint8_t i = 0,ack = YUYY_SOFT_IIC_ACK,err = YUYY_SOFTIIC_OK;
- if(!iicx)
- return 1;
- if(reglen > 0)
- {
- err = YUYY_SOFTIIC_MasterSendDatasWithOption(iicx,devaddr,YUYY_IIC_SEND_START,reg,reglen);
- }
- if(err == YUYY_SOFTIIC_OK)
- err = YUYY_SOFTIIC_MasterReadDatasWithOption(iicx,devaddr,YUYY_IIC_SEND_START|YUYY_IIC_SEND_STOP,datas,datalen);
- return err;
- }
- uint8_t YUYY_SOFTIIC_MasterSendDatas(YUYY_SOFTIIC_DEV_Type *iicx,uint8_t devaddr,uint8_t *datas,uint16_t datalen)
- {
- return YUYY_SOFTIIC_MasterSendDatasWithOption(iicx,devaddr,YUYY_IIC_SEND_START|YUYY_IIC_SEND_STOP,datas,datalen);
- }
- uint8_t YUYY_SOFTIIC_MasterReadDatas(YUYY_SOFTIIC_DEV_Type *iicx,uint8_t devaddr,uint8_t *datas,uint16_t datalen)
- {
- return YUYY_SOFTIIC_MasterReadDatasWithOption(iicx,devaddr,YUYY_IIC_SEND_START|YUYY_IIC_SEND_STOP,datas,datalen);
- }
- uint8_t YUYY_SOFTIIC_MasterSendReg8Datas(YUYY_SOFTIIC_DEV_Type *iicx,uint8_t devaddr,uint8_t reg,uint8_t *datas,uint16_t datalen)
- {
- return YUYY_SOFTIIC_MasterSendRegDatas(iicx,devaddr,®,1,datas,datalen);
- }
- uint8_t YUYY_SOFTIIC_MasterReadReg8Datas(YUYY_SOFTIIC_DEV_Type *iicx,uint8_t devaddr,uint8_t reg,uint8_t *datas,uint16_t datalen)
- {
- return YUYY_SOFTIIC_MasterReadRegDatas(iicx,devaddr,®,1,datas,datalen);
- }
OLED驱动代码
- #define YUYY_OLED_SSD1315_IIC_ADDR 0x3C
- const uint8_t oled_ssd1315_init_cmd[25]=
- {
- 0xAE,//关闭显示
- 0xD5,//设置时钟分频因子,震荡频率
- 0x80, //[3:0],分频因子;[7:4],震荡频率
- 0xA8,//设置驱动路数
- 0X3F,//默认0X3F(1/64)
- 0xD3,//设置显示偏移
- 0X00,//默认为0
- 0x40,//设置显示开始行 [5:0],行数.
- 0x8D,//电荷泵设置
- 0x14,//bit2,开启/关闭
- 0x20,//设置内存地址模式
- 0x02,//[1:0],00,列地址模式;01,行地址模式;10,页地址模式;默认10;
- 0xA1,//段重定义设置,bit0:0,0->0;1,0->127;
- 0xC8,//设置COM扫描方向;bit3:0,普通模式;1,重定义模式 COM[N-1]->COM0;N:驱动路数
- 0xDA,//设置COM硬件引脚配置
- 0x12,//[5:4]配置
- 0x81,//对比度设置
- 0xEF,//1~255;默认0X7F (亮度设置,越大越亮)
- 0xD9,//设置预充电周期
- 0xF1,//[3:0],PHASE 1;[7:4],PHASE 2;
- 0xDB,//设置VCOMH 电压倍率
- 0x30,//[6:4] 000,0.65*vcc;001,0.77*vcc;011,0.83*vcc;
- 0xA4,//全局显示开启;bit0:1,开启;0,关闭;(白屏/黑屏)
- 0xA6,//设置显示方式;bit0:1,反相显示;0,正常显示
- 0xAF,//开启显示
- };
- uint8_t YUYY_OLED_SSD1315_IICSendDatas(YUYY_OLED_SSD1315_DEV_Type *oled_ssd1315_dev,uint8_t cmd,uint8_t *datas,uint8_t datalen)
- {
- uint8_t err = 0;
- if(!oled_ssd1315_dev->iic_senddatas_func)
- return 1;
- err = oled_ssd1315_dev->iic_senddatas_func(oled_ssd1315_dev->iicx,YUYY_OLED_SSD1315_IIC_ADDR,cmd,datas,datalen);
- return err;
- }
- uint8_t YUYY_OLED_SSD1315_SendCmds(YUYY_OLED_SSD1315_DEV_Type *oled_ssd1315_dev,uint8_t *cmds,uint8_t cmdlen)
- {
- return YUYY_OLED_SSD1315_IICSendDatas(oled_ssd1315_dev,0x00,cmds,cmdlen);
- }
- uint8_t YUYY_OLED_SSD1315_SendDatas(YUYY_OLED_SSD1315_DEV_Type *oled_ssd1315_dev,uint8_t *datas,uint8_t datalen)
- {
- return YUYY_OLED_SSD1315_IICSendDatas(oled_ssd1315_dev,0x40,datas,datalen);
- }
- uint8_t YUYY_OLED_SSD1315_SetPageCol(YUYY_OLED_SSD1315_DEV_Type *oled_ssd1315_dev,uint8_t page,uint8_t col)
- {
- uint8_t cmds[3];
- if(page < 8 && col < 128)
- {
- cmds[0] = 0xB0+page;
- cmds[1] = 0x10|(col>>4);
- cmds[2] = 0x00|(col&0x0f);
- return YUYY_OLED_SSD1315_SendCmds(oled_ssd1315_dev,cmds,3);
- }
- return 1;
- }
- uint8_t YUYY_OLED_SSD1315_ClearScreen(YUYY_OLED_SSD1315_DEV_Type *oled_ssd1315_dev)
- {
- uint8_t i=0,datas[128]={0};
- while(i<8)
- {
- if(YUYY_OLED_SSD1315_SetPageCol(oled_ssd1315_dev,i,0))
- return 1;
- if(YUYY_OLED_SSD1315_SendDatas(oled_ssd1315_dev,datas,128))
- return 1;
- i += 1;
- }
- return 0;
- }
- uint8_t YUYY_OLED_SSD1315_TestScreen(YUYY_OLED_SSD1315_DEV_Type *oled_ssd1315_dev,uint8_t d1,uint8_t d2)
- {
- uint8_t i=0,datas[128]={0};
- while (i < 128)
- {
- datas[i] = d1;
- datas[i+1] = d2;
- i += 2;
- }
- i = 0;
- while(i<8)
- {
- if(YUYY_OLED_SSD1315_SetPageCol(oled_ssd1315_dev,i,0))
- return 1;
- if(YUYY_OLED_SSD1315_SendDatas(oled_ssd1315_dev,datas,128))
- return 1;
- i += 1;
- }
- return 0;
- }
- uint8_t YUYY_OLED_SSD1315_Init(YUYY_OLED_SSD1315_DEV_Type *oled_ssd1315_dev)
- {
- uint8_t err = 0;
- err = YUYY_OLED_SSD1315_SendCmds(oled_ssd1315_dev,(uint8_t *)oled_ssd1315_init_cmd,25);
- return err;
- }
- void YUYY_OLED_SSD1315_CopyDatas(uint8_t *dst,uint8_t *src,uint8_t len,uint8_t rev)
- {
- uint8_t i = 0;
- while (i < len)
- {
- if(rev)
- dst[i] = ~src[i];
- else
- dst[i] = src[i];
- i += 1;
- }
- }
- void YUYY_OLED_SSD1315_DisplayDatas(YUYY_OLED_SSD1315_DEV_Type *oled_ssd1315_dev,uint8_t option,uint8_t page,uint8_t column,uint8_t *dp,uint8_t width,uint8_t height)
- {
- uint8_t rev,i=0,j=0,k=0,hp=height/8;
- uint8_t datas[128] = {0};
- rev = option&YUYY_FONT_DATAS_REVERSE;
- if((option&YUYY_FONT_DATAS_COL_COL) == 0)
- {
- while (i<hp)
- {
- if(YUYY_OLED_SSD1315_SetPageCol(oled_ssd1315_dev,page+i,column))
- return;
- YUYY_OLED_SSD1315_CopyDatas(datas,dp,width,rev);
- if(YUYY_OLED_SSD1315_SendDatas(oled_ssd1315_dev,datas,width))
- return;
- i+=1;
- }
- }
- else
- {
- while (i<hp)
- {
- if(YUYY_OLED_SSD1315_SetPageCol(oled_ssd1315_dev,page+i,column))
- return;
- k=i;
- j=0;
- while (j<width)
- {
- if(rev == 0)
- datas[j] == dp[k];
- else
- datas[j] == ~dp[k];
- j+=1;
- k+=hp;
- }
- if(YUYY_OLED_SSD1315_SendDatas(oled_ssd1315_dev,datas,width))
- return;
- i+=1;
- }
- }
- }
- void YUYY_OLED_SSD1315_DisplayString8x16(YUYY_OLED_SSD1315_DEV_Type *oled_ssd1315_dev,uint8_t option,uint8_t page,uint8_t column,char *text)
- {
- uint8_t i=0,j = 0,rev = option&YUYY_FONT_DATAS_REVERSE;
- uint8_t datas1[128] = {0},datas2[128] = {0};
-
- while(text[i]>0x00 && j < 128)
- {
- if((text[i] > 0x1F)&&(text[i] < 0x7F))
- {
- YUYY_OLED_SSD1315_CopyDatas(&datas1[j],(uint8_t *)&YUYY_FONT_ASCII_TABLE_8x16[text[i]-0x20][0],8,rev);
- YUYY_OLED_SSD1315_CopyDatas(&datas2[j],(uint8_t *)&YUYY_FONT_ASCII_TABLE_8x16[text[i]-0x20][8],8,rev);
- }
- j += 8;
- i += 1;
- }
- if(YUYY_OLED_SSD1315_SetPageCol(oled_ssd1315_dev,page,column))
- return;
- if(YUYY_OLED_SSD1315_SendDatas(oled_ssd1315_dev,datas1,j))
- return;
- if(YUYY_OLED_SSD1315_SetPageCol(oled_ssd1315_dev,page+1,column))
- return;
- if(YUYY_OLED_SSD1315_SendDatas(oled_ssd1315_dev,datas2,j))
- return;
- }
- void YUYY_OLED_SSD1315_DisplayString6x8(YUYY_OLED_SSD1315_DEV_Type *oled_ssd1315_dev,uint8_t option,uint8_t page,uint8_t column,char *text)
- {
- uint8_t i=0,j = 0,rev = option&YUYY_FONT_DATAS_REVERSE;
- uint8_t datas[128] = {0};
- while(text[i]>0x00 && j < 128)
- {
- if((text[i] > 0x1F)&&(text[i] < 0x7F))
- {
- if(j < 126)
- YUYY_OLED_SSD1315_CopyDatas(&datas[j],(uint8_t *)YUYY_FONT_ASCII_TABLE_6x8[text[i]-0x20],6,rev);
- else
- YUYY_OLED_SSD1315_CopyDatas(&datas[j],(uint8_t *)YUYY_FONT_ASCII_TABLE_6x8[text[i]-0x20],2,rev);
- }
- j += 6;
- i += 1;
- }
- if(j > 128)
- j = 128;
- if(YUYY_OLED_SSD1315_SetPageCol(oled_ssd1315_dev,page,column))
- return;
- if(YUYY_OLED_SSD1315_SendDatas(oled_ssd1315_dev,datas,j))
- return;
- }
初始化OLED
- void oled_init()
- {
- // oled_dev.iicx = I2C1;
- // oled_dev.iic_senddatas_func = (YUYY_OLED_SSD1315_IICSendDatasFunc_Type)YUYY_HARDIIC_MasterSendReg8Datas;
- oled_dev.iicx = &siic;
- oled_dev.iic_senddatas_func = (YUYY_OLED_SSD1315_IICSendDatasFunc_Type)YUYY_SOFTIIC_MasterSendReg8Datas;
- YUYY_OLED_SSD1315_Init(&oled_dev);
- YUYY_OLED_SSD1315_ClearScreen(&oled_dev);
- YUYY_OLED_SSD1315_DisplayString8x16(&oled_dev,0,0,0," APM32F411 TEST");
- YUYY_OLED_SSD1315_DisplayString8x16(&oled_dev,0,2,0," I2C OLED");
- YUYY_OLED_SSD1315_DisplayString8x16(&oled_dev,0,4,0," bbs.21ic.com");
- YUYY_OLED_SSD1315_DisplayString8x16(&oled_dev,0,6,0,"Code by yuyy1989");
- }
运行效果
接下来读取DHTC12的温湿度数据并在OLED上显示出来
DHTC12驱动代码
- #define DHTC12_I2C_ADDR 0x44
- static uint16_t HumA,HumB;
- uint8_t YUYY_DHTC12_WriteCmd(YUYY_DHTC12_DEV_Type *dhtc12_dev,uint16_t cmd)
- {
- return dhtc12_dev->iic_sendregdatas_func(dhtc12_dev->iicx,DHTC12_I2C_ADDR,cmd,NULL,0);
- }
- uint8_t YUYY_DHTC12_ReadDatas(YUYY_DHTC12_DEV_Type *dhtc12_dev,uint8_t *rdatas,uint8_t rlen)
- {
- return dhtc12_dev->iic_readdatas_func(dhtc12_dev->iicx,DHTC12_I2C_ADDR,rdatas,rlen);
- }
- uint8_t YUYY_DHTC12_ReadCmd(YUYY_DHTC12_DEV_Type *dhtc12_dev,uint16_t cmd,uint8_t *rdatas,uint8_t rlen)
- {
- return dhtc12_dev->iic_readregdatas_func(dhtc12_dev->iicx,DHTC12_I2C_ADDR,cmd,rdatas,rlen);
- }
- //初始化,获取湿度运算系数
- uint8_t YUYY_DHTC12_Init(YUYY_DHTC12_DEV_Type *dhtc12_dev)
- {
- uint8_t x,err = 0,retry = 3;
- dhtc12_dev->inited = 0;
- if(!dhtc12_dev->delayms_func)
- dhtc12_dev->delayms_func = YUYY_DelayMs;
- //复位传感器
- err = YUYY_DHTC12_WriteCmd(dhtc12_dev,0x30A2);
- err = YUYY_DHTC12_ReadCmd(dhtc12_dev,0xD208,&x,1);
- HumA = (x<<8)&0xFF00;
- err = YUYY_DHTC12_ReadCmd(dhtc12_dev,0xD209,&x,1);
- HumA |= x;
-
- err = YUYY_DHTC12_ReadCmd(dhtc12_dev,0xD20A,&x,1);
- HumB = (x<<8)&0xFF00;
- err = YUYY_DHTC12_ReadCmd(dhtc12_dev,0xD20B,&x,1);
- HumB |= x;
- //HumA=0x7168; HumB=0x2D73;
- //ReadDatSH[6]={0xF3, 0xA9, 0xC0, 0x41, 0xB4, 0x87}
- //27.6 48.4%
- dhtc12_dev->inited = 1;
- return 0;
- }
- const uint16_t POLYNOMIAL = 0x131; //P(x)=x^8+x^5+x^4+1 = 100110001
- uint8_t YUYY_DHTC12_CheckCrc(uint8_t Data[], uint8_t nbrOfBytes)
- {
- uint8_t crc = 0xff; //0
- uint8_t byteCtr,Bit;
- //calculates 8-Bit checksum with given polynomial
- for (byteCtr = 0; byteCtr < nbrOfBytes; ++byteCtr)
- {
- crc ^= (Data[byteCtr]);
- for (Bit = 8; Bit > 0; --Bit)
- {
- if (crc & 0x80)
- crc = (crc << 1) ^ POLYNOMIAL;
- else
- crc = (crc << 1);
- }
- }
- if (crc != Data[nbrOfBytes])
- {
- Data[nbrOfBytes] = crc;
- return 0x01;
- }
- else
- return 0;
- }
- //单次触发温湿度测量
- uint8_t YUYY_DHTC12_ReadHT(YUYY_DHTC12_DEV_Type *dhtc12_dev,int16_t *tem,int16_t *hum)
- {
- uint8_t i=0,errRe,ReadDatSH[6],CalCRC[3],errorflag=0;
- int16_t TemBuf;
- uint16_t CapBuf;
- errRe = YUYY_DHTC12_WriteCmd(dhtc12_dev,0x2C10);
- if(errRe)
- errRe = YUYY_DHTC12_WriteCmd(dhtc12_dev,0x2C10);
- if(errRe)
- {
- return 0x10|errRe; //发送命令失败
- }
-
- dhtc12_dev->delayms_func(100);
- errRe = YUYY_DHTC12_ReadDatas(dhtc12_dev,ReadDatSH,6);
- if(errRe)
- {
- return 0x20|errRe; //接收数据失败
- }
- CalCRC[0] = ReadDatSH[0];
- CalCRC[1] = ReadDatSH[1];
- CalCRC[2] = ReadDatSH[2];
- errorflag = YUYY_DHTC12_CheckCrc(CalCRC,2);
- if(errorflag==0)
- {
- TemBuf = (int16_t)(((ReadDatSH[0]<<8)&0xFF00)|ReadDatSH[1]);
- *tem = TemBuf*10/256 + 400;
- }
- CalCRC[0] = ReadDatSH[3];
- CalCRC[1] = ReadDatSH[4];
- CalCRC[2] = ReadDatSH[5];
- errorflag <<= 1;
- errorflag |= YUYY_DHTC12_CheckCrc(CalCRC,2);
- if(errorflag==0)
- {
- CapBuf = (uint16_t)(((ReadDatSH[3]<<8)&0xFF00)|ReadDatSH[4]);
- *hum = (CapBuf-HumB)*600/(HumA-HumB)+300;
- //20℃为5个湿度点 即1℃为0.25个湿度点 0.1℃为0.025
- *hum = *hum+ 2.5*(*tem-250);
- if(*hum>1000)
- *hum = 999;
- else if(*hum<0)
- *hum = 0;
- }
- return errorflag;
- }
DHTC12初始化
- YUYY_DHTC12_DEV_Type dhtc12_dev;
- void dhtc12_init()
- {
- // dhtc12_dev.iicx = I2C1;
- dhtc12_dev.iicx = &siic;
- dhtc12_dev.delayms_func = YUYY_DelayMs;
- // dhtc12_dev.iic_readdatas_func = (YUYY_DHTC12_IICReadDatasFunc_Type)YUYY_HARDIIC_MasterReadDatas;
- // dhtc12_dev.iic_readregdatas_func = (YUYY_DHTC12_IICReadReg16BEDatasFunc_Type)YUYY_HARDIIC_MasterReadReg16BEDatas;
- // dhtc12_dev.iic_sendregdatas_func = (YUYY_DHTC12_IICSendReg16BEDatasFunc_Type)YUYY_HARDIIC_MasterSendReg16BEDatas;
- dhtc12_dev.iic_readdatas_func = (YUYY_DHTC12_IICReadDatasFunc_Type)YUYY_SOFTIIC_MasterReadDatas;
- dhtc12_dev.iic_readregdatas_func = (YUYY_DHTC12_IICReadReg16BEDatasFunc_Type)YUYY_SOFTIIC_MasterReadReg16BEDatas;
- dhtc12_dev.iic_sendregdatas_func = (YUYY_DHTC12_IICSendReg16BEDatasFunc_Type)YUYY_SOFTIIC_MasterSendReg16BEDatas;
- YUYY_DHTC12_Init(&dhtc12_dev);
- }
在main函数中调用
- int main(void)
- {
- uint8_t i = 0;
- int16_t temp,humi;
- char out[20];
- ConfigSysClock();
- yuyy_LedInit();
- tim9_init();
- // pwm_init();
- uart_init();
- // core_main();
- // app_I2CInit();
- //YUYY_HARDIIC_SetInitFunc(app_I2CInit);
- app_SoftI2cInit();
- oled_init();
- dhtc12_init();
- while (1)
- {
- i += 1;
- // printf("极海APM32F411串口Printf测试 by yuyy1989 当前数字是:%d\n",i);
- YUYY_DelayMs(1000);
- yuyy_LedToggle(YUYY_LED2);
- YUYY_DelayMs(1000);
- yuyy_LedToggle(YUYY_LED3);
- YUYY_DelayMs(1000);
- yuyy_LedToggle(YUYY_LED2|YUYY_LED3);
- if(!YUYY_DHTC12_ReadHT(&dhtc12_dev,&temp,&humi))
- {
- sprintf(out,"T:%03.1f H:%03.1f%%",temp/10.0,humi/10.0);
- YUYY_OLED_SSD1315_DisplayString8x16(&oled_dev,0,4,0,out);
- }
- }
- }
运行效果