单片机模拟I2C总线及24C02(I2C EEPROM)读写实例（国外英文资料）.docVIP

单片机模拟I2C总线及24C02(I2C EEPROM)读写实例（国外英文资料） The single chip machine simulates the I2C bus and the 24C02 (I2C EEPROM) read-write instance (source code) Browse options: large and medium color default grey olive green, green, blue, red / * 51 series microcontroller when use, sometimes need to simulate I2C bus, * / / * here is an example (read and write serial EEPROM chip at2402) * / / * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * / / * Name: the read-write program for AT24C02, which USES the I2C bus and has a relatively independent I2C bus read and write function * / Language: / * * / C51 programming Language / * Platform: Win98, Intel Celeron 433 Processor, weifu emulator, simulation 8751 * / / * Author: StephenZhu javasdk@163.com * / / * Date: on May 21, 2003, May 22, on May 29, * / / * Version: 1.1.1 * / / * Others: None * / / * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * / # include string. H # include reg52. H # include intrins. H # define DELAY_TIME 60 / *, no less than 50! Otherwise, there may be a sequence of confusion 1 # define TRUE # define FALSE 0 Sbit SCL = P1 ^ 7; / * suppose P1.7 and P1.6 control * / Sbit SDA = P1 ^ 6; The Function Definition of a Function Definition is * * * * * * Void DELAY (unsigned int t) / * DELAY function * / { While (t! = 0) T --; } Void I2C_Start (void) { / * start the function of the I2C bus, which causes SDA to generate a negative jump * / when SCL is high SDA = 1; SCL = 1; DELAY (DELAY_TIME); SDA = 0; DELAY (DELAY_TIME); SCL = 0; DELAY (DELAY_TIME); } Void I2C_Stop (void) { / * terminate the I2C bus, which causes SDA to make a positive jump * / when SCL is high SDA = 0; SCL = 1; DELAY (DELAY_TIME); SDA = 1; DELAY (DELAY_TIME); SCL = 0; DELAY (DELAY_TIME); } Void SEND_0 (void) / * SEND ACK * / { / * send 0, which makes the SDA signa