unsigned char I2Cm_ReadBytes(unsigned char SlaveAdr, unsigned char *RxArray, unsigned char SubAdr0, unsigned char SubAdr1, unsigned char RxByteCount)
{
unsigned char i=0;
SlaveAdr &= (~0x01); //for write // and the address with the Write bit.
I2Cm_Start();
if(I2Cm_Put(SlaveAdr))
{
I2Cm_Stop();
return 1; //exit with SlaveAddress error bit on
}
if(I2Cm_Put(SubAdr0))
{
I2Cm_Stop();
return 2; //exit with SubAddress0 error bit on
}
if(I2Cm_Put(SubAdr1))
{
I2Cm_Stop();
return 3; //exit with SubAddress1 error bit on
}
I2Cm_Stop();
udelay(50); // 50us
I2Cm_Start();
SlaveAdr |= 0x01; //for read //OR the address with the Read bit.
if(I2Cm_Put(SlaveAdr)) ;//return 4; //exit with SlaveAddress error bit on
udelay(50); // 50us
for(i=0; i<RxByteCount; i++)
{
RxArray[i] = I2Cm_Get();
if(i!=(RxByteCount-1)) I2Cm_ACKSend();
else I2Cm_NAKSend();
}
I2Cm_Stop();
return 0;
}
unsigned char I2Cm_WriteBytes(unsigned char SlaveAdr, unsigned char *TxArray, unsigned char SubAdr0, unsigned char SubAdr1, unsigned char TxByteCount)
{
unsigned char i=0;
SlaveAdr &= (~0x01); //for write //and the address with the Write bit.
I2Cm_Start();
if(I2Cm_Put(SlaveAdr))
{
I2Cm_Stop();
return 1; //exit with SlaveAddress error bit on
}
if(I2Cm_Put(SubAdr0))
{
I2Cm_Stop();
return 2; //exit with SubAddress0 error bit on
}
if(I2Cm_Put(SubAdr1))
{
I2Cm_Stop();
return 3; //exit with SubAddress1 error bit on
}
udelay(50); // 50us
for(i=0; i<TxByteCount; i++)
{
if(I2Cm_Put(TxArray[i]))
{
I2Cm_Stop();
return 8; //exit with write data error bit on
}
}
I2Cm_Stop();
return 0;
}
void main(void)
{
//Variables
char lcdFirstLine[LCD_LENGTH], lcdSecondLine[LCD_LENGTH];
int displaymode = 1;
int temperature[5];
int humidity[5];
/** init **/
// interrupt and SleepTimer init
M8C_EnableGInt ; // Turn on interrupts
SleepTimer_Start();
SleepTimer_SetInterval(SleepTimer_8_HZ); // Set interrupt to a
SleepTimer_EnableInt(); // 8 Hz rate
// LCD init
LCD_Init();
// print welcome screen to LCD
csprintf(lcdFirstLine," Welcome to ");
csprintf(lcdSecondLine, " Weatherstation ");
LCD_Position(0,0);
LCD_PrString(lcdFirstLine);
LCD_Position(1,0);
LCD_PrString(lcdSecondLine);
while(1) {
I2Cm_Start(); //Initialize I2C
I2Cm_fSendStart( 0x28, 0); //Send Measuring Request
measuring(temperature, humidity); //measuring temperature and humidity
switch(displaymode) {
case 0:
// overview();
break;
case 1:
printtemp(lcdFirstLine, lcdSecondLine, temperature); //write temp in the variable for the lcd
break;
case 2:
printhum(lcdFirstLine, lcdSecondLine, humidity); //wirte humidity in the variable for the lcd
break;
case 3:
// rain();
break;
case 4:
// wind();
break;
default:
displaymode = 0;
csprintf(lcdFirstLine," Error ");
csprintf(lcdSecondLine," ");
}
// lets see what we've got
LCD_Position(0,0);
LCD_PrString(lcdFirstLine);
LCD_Position(1,0);
LCD_PrString(lcdSecondLine);
// lets sleep for a while
SleepTimer_SyncWait(8, SleepTimer_WAIT_RELOAD);
}
}
