void in() {
const char *s = "abcdef";
showByte((byte_pointer) s, sizeof(s));
int a = 1;
int b = 1;
int c = a ^ b;
printf("%d", c);
int arr[] = { 1, 2, 3, 4, 5, 6 };
reverse_array(arr, 6);
int i;
for (i = 0; i < 6; i++) {
printf("%d", arr[i]);
}
printf("\n--show int--\n");
showInt(100);
}
// slave operations
void i2cSlaveReceiveService(u08 receiveDataLength, u08* receiveData)
{
u08 i;
// this function will run when a master somewhere else on the bus
// addresses us and wishes to write data to us
showByte(*receiveData);
cbi(PORTB, PB6);
// copy the received data to a local buffer
for(i=0; i<receiveDataLength; i++)
{
localBuffer[i] = *receiveData++;
}
localBufferLength = receiveDataLength;
}
u08 i2cSlaveTransmitService(u08 transmitDataLengthMax, u08* transmitData)
{
u08 i;
// this function will run when a master somewhere else on the bus
// addresses us and wishes to read data from us
showByte(*transmitData);
cbi(PORTB, PB7);
// copy the local buffer to the transmit buffer
for(i=0; i<localBufferLength; i++)
{
*transmitData++ = localBuffer[i];
}
localBuffer[0]++;
return localBufferLength;
}
void i2cTest(void)
{
u08 c=0;
showByte(0x55);
// initialize i2c function library
i2cInit();
// set local device address and allow response to general call
i2cSetLocalDeviceAddr(LOCAL_ADDR, TRUE);
// set the Slave Receive Handler function
// (this function will run whenever a master somewhere else on the bus
// writes data to us as a slave)
i2cSetSlaveReceiveHandler( i2cSlaveReceiveService );
// set the Slave Transmit Handler function
// (this function will run whenever a master somewhere else on the bus
// attempts to read data from us as a slave)
i2cSetSlaveTransmitHandler( i2cSlaveTransmitService );
timerPause(500);
showByte(0xAA);
while(1)
{
rprintf("Command>");
while(!c) uartReceiveByte(&c);
switch(c)
{
case 's':
rprintf("Send: ");
// get string from terminal
localBufferLength = 0;
c = 0;
while((c != 0x0D) && (localBufferLength < 0x20))
{
while(!uartReceiveByte(&c));
localBuffer[localBufferLength++] = c;
uartSendByte(c);
}
// switch CR to NULL to terminate string
localBuffer[localBufferLength-1] = 0;
// send string over I2C
i2cMasterSend(TARGET_ADDR, localBufferLength, localBuffer);
//i2cMasterSendNI(TARGET_ADDR, localBufferLength, localBuffer);
rprintfCRLF();
break;
case 'r':
rprintf("Receive: ");
// receive string over I2C
i2cMasterReceive(TARGET_ADDR, 0x10, localBuffer);
//i2cMasterReceiveNI(TARGET_ADDR, 0x10, localBuffer);
// format buffer
localBuffer[0x10] = 0;
rprintfStr(localBuffer);
rprintfCRLF();
break;
case 'm':
testI2cMemory();
break;
default:
rprintf("Unknown Command!");
break;
}
c = 0;
rprintfCRLF();
}
}
void showPointer(void *x) {
showByte((byte_pointer) &x, sizeof(x));
}
void showFloat(float x) {
showByte((byte_pointer) &x, sizeof(x));
}
void showInt(int x) {
showByte((byte_pointer) &x, sizeof(x));
}
