C++ (Cpp) MAKE_I2C_CLASS Exemples

Exemple #1

Fichier : i2cSwBus.c Projet : kenzanin/webbotavrclib-1x

	scl_low(i2c);
	sda_high(i2c);

	return b;						// return received byte
}

// Send the stop
static void stop(const I2C_ABSTRACT_BUS* bus){
	const I2C_SOFTWARE_BUS* i2c = (const I2C_SOFTWARE_BUS*)bus;
	sda_low(i2c);
	halfDelay();
	scl_high(i2c);
	halfDelay();
	sda_high(i2c);
	halfDelay();
}

static void init(I2C_ABSTRACT_BUS* bus){
	const I2C_SOFTWARE_BUS* i2c = (I2C_SOFTWARE_BUS*)bus;

	// Make both pins high
	sda_high(i2c);
	scl_high(i2c);
}



// Expose this implementation to the linker
I2C_CLASS const c_sw_i2c = MAKE_I2C_CLASS(&init, &start,&stop, &getByte, &putByte, null);

Exemple #2

Fichier : i2cHwBus.c Projet : bechu/hexapod

	outb(TWCR, (inb(TWCR)&TWCR_CMD_MASK)|BV(TWINT)|BV(TWSTA));
	i2cWaitForComplete();

	// Send the device addr and direction
//	uint8_t addr = device->addr;
	if(writeMode==FALSE){
		addr |= 1;
	}else{
		addr &= 0xfe;
	}
	outb(TWDR, addr);
	// begin send
	outb(TWCR, (inb(TWCR)&TWCR_CMD_MASK)|BV(TWINT));
	i2cWaitForComplete();

	uint8_t got = inb(TWSR) & TWSR_STATUS_MASK;	// get the status
    return( (got == expect) ? TRUE : FALSE );

}

static void stop(const I2C_ABSTRACT_BUS* bus){
	// transmit stop condition
	// leave with TWEA on for slave receiving
	outb(TWCR, (inb(TWCR)&TWCR_CMD_MASK)|BV(TWINT)|BV(TWEA)|BV(TWSTO));
	i2cState = I2C_IDLE;
}


// Expose this implementation to the linker
const I2C_CLASS PROGMEM c_hw_i2c = MAKE_I2C_CLASS(&init, &start,&stop, &getByte, &putByte, &speed);