User manual

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5.3.8.9 I2C voorbeeld
Voorbeeld: EEPROM 24C64 lezen en schrijven zonder I2C_status opvragen
// I2C initialisatie, bit rate 100kHz
main(void)
{
word address;
byte data,EEPROM_data;
address=0x20;
data=0x42;
I2C_Init(12C_100kHz );
// write data to 24C64 (8k x 8) EEPROM
I2C_Start();
I2C_Write(0xA0); // DEVICE ADDRESS : A0
I2C_Write(address>>8); // HIGH WORD ADDRESS
I2C_Write (address); // LOW WORD ADDRESS
I2C_Write(data); // Write Data
I2C_Stop();
AbsDelay(5); // delay for EEPROM Write Cycle
// read data from 24C64 (8k x 8) EEPROM
I2C_Start();
I2C_Write(0xA0) ; // DEVICE ADDRESS : A0
I2C_Write(address>>8); // HIGH WORD ADDRESS
I2C_Write (address) ; // LOW WORD ADDRESS
I2C_Start(); // RESTART
I2C_Write(0xA1); // DEVICE ADDRESS :A1
EEPROM_data=I2C_Read_NACK();
I2C_Stop();
Mag_WriteHex(EEPROM_data);