TI芯片RTC时钟BQ32000 - 智能车制作

//BQ32000Ð´¼Ä´æÆ÷
void BQ3200_WriteRegister(uint32_t I2Cx, unsigned char RegisterAddress, unsigned char Data)
{
//·¢ËÍµØÖ·
I2C_GenerateSTART(BQ32000_I2C_PORT);
I2C_Send7bitAddress(BQ32000_I2C_PORT,BQ32000_IIC_ADDRESS,kI2C_Write);
I2C_WaitAck(BQ32000_I2C_PORT);
//·¢ËÍÐèÒªÐ´ÈëµÄ¼Ä´æÆ÷µØÖ·
I2C_SendData(BQ32000_I2C_PORT,RegisterAddress);
I2C_WaitAck(BQ32000_I2C_PORT);
//·¢ËÍÊý¾Ý
I2C_SendData(BQ32000_I2C_PORT,Data);
I2C_WaitAck(BQ32000_I2C_PORT);
//½áÊø
I2C_GenerateSTOP(BQ32000_I2C_PORT);
while(I2C_IsBusy(BQ32000_I2C_PORT) == 0);
}
//BQ32000¶Á¼Ä´æÆ÷
uint8_t BQ32000_ReadRegister(uint32_t I2Cx, uint8_t Addr)
{
uint8_t result;
//·¢ËÍ´Ó»úµØÖ·
I2C_GenerateSTART(I2Cx);
I2C_Send7bitAddress(I2Cx,BQ32000_IIC_ADDRESS,kI2C_Write);
I2C_WaitAck(I2Cx);
//ÐèÒª¶ÁÈ¡µÄ¼Ä´æÆ÷
I2C_SendData(I2Cx, Addr);
I2C_WaitAck(I2Cx);
//ÖØÐÂ¿ªÊ¼
I2C_GenerateRESTART(I2Cx);
//Ö÷»ú¶Á
I2C_Send7bitAddress(I2Cx,BQ32000_IIC_ADDRESS,kI2C_Read);
I2C_WaitAck(I2Cx);
//ÉèÖÃKinetisÎª½ÓÊÕÄ£Ê½
I2C_SetMasterMode(I2Cx,kI2C_Read);
result = I2C_ReadData(I2Cx);
I2C_GenerateAck(I2Cx);
I2C_WaitAck(I2Cx);
//·¢ËÍÍ£Ö¹ÐÅºÅ
I2C_GenerateSTOP(I2Cx);
//¶ÁÈ¡Êý¾Ý
result = I2C_ReadData(I2Cx);
while(I2C_IsBusy(BQ32000_I2C_PORT) == 0);
return result;
}
//³õÊ¼»¯BQ32000
void BQ32000_Init(void)
{
I2C_QuickInit(I2C0_SCL_PB00_SDA_PB01, 96000);
}
//ÉèÖÃ³õÊ¼Ê±¼ä
void Settime(char tyear,char tmonth,char tdayofweek,char tdate,char thour, char tminute, char tseconds)
{
secondunits=(tseconds%10);
secondtens=(tseconds/10);
mintens=(tminute/10);
minunits=(tminute%10);
hourtens=(thour/10);
hourunits=(thour%10);
tdayofweek=tdayofweek;
datetens=(tdate/10);
dateunits=(tdate%10);
monthtens=(tmonth/10);
monthunits=(tmonth%10);
yeartens=(tyear/10);
yearunits=(tyear%10);
timearrW[0]=secondunits+(secondtens<<4);
BQ3200_WriteRegister(BQ32000_I2C_PORT,0x00,timearrW[0]);
timearrW[1]=minunits+(mintens<<4);
BQ3200_WriteRegister(BQ32000_I2C_PORT,0x01,timearrW[1]);
timearrW[2]=hourunits+(hourtens<<4);
BQ3200_WriteRegister(BQ32000_I2C_PORT,0x02,timearrW[2]);
timearrW[3]=tdayofweek;
BQ3200_WriteRegister(BQ32000_I2C_PORT,0x03,timearrW[3]);
timearrW[4]=dateunits+(datetens<<4);
BQ3200_WriteRegister(BQ32000_I2C_PORT,0x04,timearrW[4]);
timearrW[5]=monthunits+(monthtens<<4);
BQ3200_WriteRegister(BQ32000_I2C_PORT,0x05,timearrW[5]);
timearrW[6]=yearunits+(yeartens<<4);
BQ3200_WriteRegister(BQ32000_I2C_PORT,0x06,timearrW[6]);
}
void Readtime(void)
{
timearrR[0] = BQ32000_ReadRegister(BQ32000_I2C_PORT,0x00);
timearrR[1] = BQ32000_ReadRegister(BQ32000_I2C_PORT,0x01);
timearrR[2] = BQ32000_ReadRegister(BQ32000_I2C_PORT,0x02);
timearrR[3] = BQ32000_ReadRegister(BQ32000_I2C_PORT,0x03);
timearrR[4] = BQ32000_ReadRegister(BQ32000_I2C_PORT,0x04);
timearrR[5] = BQ32000_ReadRegister(BQ32000_I2C_PORT,0x05);
timearrR[6] = BQ32000_ReadRegister(BQ32000_I2C_PORT,0x06);
}

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