Mikroelektronika MIKROE-724 データシート

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mikoBasic PRO for dsPIC30/33 and PIC24

MikroElektronika

Library Example

This code demonstrates working with the I²C library. Program sends data to EEPROM (data is written at the address 

2). After that, program reads data from the same EEPROM address and displays it on PORTB for visual check. See the 

figure below how to interface the 24C02 to dsPIC30/33 and PIC24.

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program I2C_Simple

main:

  ADPCFG = 0xFFFF        ‘ initialize AN pins as digital

  LATB = 0

  TRISB = 0              ‘ Configure PORTB as output

  I2C1_Init(100000)      ‘ initialize I2C communication

  I2C1_Start()           ‘ issue I2C start signal

  I2C1_Write(0xA2)       ‘ send byte via I2C  (device address + W)

  I2C1_Write(2)          ‘ send byte (address of EEPROM location)

  I2C1_Write(0xAA)       ‘ send data (data to be written)

  I2C1_Stop()            ‘ issue I2C stop signal

  Delay_100ms()

  I2C1_Start()           ‘ issue I2C start signal

  I2C1_Write(0xA2)       ‘ send byte via I2C  (device address + W)

  I2C1_Write(2)          ‘ send byte (data address)

  I2C1_Restart()         ‘ issue I2C signal repeated start

  I2C1_Write(0xA3)       ‘ send byte (device address + R)

  PORTB = I2C1_Read(1)   ‘ Read the data (NO acknowledge)

  I2C1_Stop()            ‘ issue I2C stop signal

HW Connection

Interfacing 24c02 to dsPIC30/33 and PIC24 via I²C