// functions
void edpInit(void)
{
// initialize i2c interface and function library
i2cInit();
// set i2c bit rate to 30KHz
i2cSetBitrate(30);
// 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( edpSlaveReceiveService );
// 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( edpSlaveTransmitService );
}
int main(void) {
uchar i;
DDRC &= (~0x30);
_delay_ms(20);
DDRC |= (1U << 3);
PORTC |= (1U << 3);
i2cInit();
i2cSetBitrate(10);
i2cSetLocalDeviceAddr(0x80, TRUE);
i2cSetSlaveReceiveHandler(i2c_write);
_delay_ms(20);
PORTC ^= (1U << 3);
wdt_enable(WDTO_1S);
/* Even if you don't use the watchdog, turn it off here. On newer devices,
* the status of the watchdog (on/off, period) is PRESERVED OVER RESET!
*/
wdt_disable();
/* RESET status: all port bits are inputs without pull-up.
* That's the way we need D+ and D-. Therefore we don't need any
* additional hardware initialization.
*/
usbInit();
usbDeviceDisconnect(); /* enforce re-enumeration, do this while interrupts are disabled! */
i = 0;
while(--i){ /* fake USB disconnect for > 250 ms */
wdt_reset();
_delay_ms(1);
}
usbDeviceConnect();
sei();
for(;;) { /* main event loop */
wdt_reset();
usbPoll();
}
return 0;
}
int main(void) {
DDRD = 0xff;
DDRB = 0xff;
DDRA = 0xff;
clear();
init();
frame = 0;
i2cInit();
i2cSetBitrate(10);
i2cSetLocalDeviceAddr(LOCAL_ADDR, TRUE);
i2cSetSlaveReceiveHandler( i2cSlaveReceiveService );
i2cSetSlaveTransmitHandler( i2cSlaveTransmitService );
frameDelay = 100;
// continuously loop
while(1) {
// draw();
// updateOffsets();
// frame++;
// _delay_ms(frameDelay);
}
}
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();
}
}
