應(yīng)廣單片機(jī)讀寫24C02程序代碼

1、應(yīng)廣單片機(jī)讀寫24C02程序代碼#include extern. h#include ，zmain. h f 1 I I I I I I I 1 I I I I I I I 1 I I I I I I I 1 I I I I I I I 1 I I I I I I I 1 I I I I I I I 1 I I 1 /t f w vVw vTw vVw W VBW VgW VlW vaw vVw vTw vVw W VBW VgW VlW vaw vVw vTw vVw W VBW VgW VlW vaw vVw vTw vVw W VBW VgW VlW vaw vVw vTw vVw W

2、VBW VgW VlW vaw vVw vTw vVw W VBW VgW VlW vaw VBW vTw/?0aI2C?0?0I2C_SDA equ pb. 2I2C_SCL equ pb. 0I2C_SDA_DIR equ pbc. 2I2C_SCL_DIR equ pbc. 0I2C_L0NG_DLY equ 50I2C_SH0RT_DLY equ 20I2C_SDA_HIGH equ setl I2C.SDA I2C_SDA_L0W equ setO I2C.SDAI2C_SCL_HIGH equ setl I2C.SCL I2C_SCL_L0W equ setO I2C.SCLI2C

3、 SDA OUTPUT equ setl I2C SDA DIR I2C SDA INPUT equ setO I2C SDA DIRI2C SCL OUTPUT equ setl I2C SCL DIR I2C SCL INPUT equ setO I2C SCL DIR /?0aI2C?aA?uchar i2c_rw_addr; /?AD?M0O? uchar i2c_rw_byte; /?AD?fiy?Y uchar i2c_rw_cmd; /?AD?MAJ?t)M0O? uchar i2c_rw_temp; /?AD?y?10D?a?aA? uchar i2c_rw_cnt; /?AD

4、?y?tOD?a?aA?/?uuSTARTDAAi2c_start:I2C SDA OUTPUTI2C_SCL_0UTPUTI2C_SDA_HIGHdelay I2C_L0NG_DLYI2C_SCL_HIGHdelay I2C_L0NG_DLYI2C_SDA_L0Wdelay I2C_L0NG_DLYI2C_SCL_L0Wdelay I2C_L0NG_DLY ret/?ufiiiSTOPDA0 A/i2c_stop：I2C_SCL_L0Wdelay I2C_L0NG_DLYI2C_SDA_L0Wdelay I2C_L0NG_DLYI2C_SCL_HIGHdelay I2C_L0NG_DLYI2

5、C_SDA_HIGHdelay I2C_L0NG_DLY ret/?1?QSALVE ACKDAoA /i2c_slave_ack：/dont check ACKI2C_SDA_INPUTdelay I2C_SH0RT_DLYI2C_SCL_HIGHdelay I2C_SH0RT_DLYI2C_SCL_LOWdelay I2C_SH0RT_DLYI2C_SDA_0UTPUTI2C_SDA_L0Wdelay I2C_SH0RT_DLYret/餡?6MASTER ACKDAA /i2c_master_ack：I2C_SDA_0UTPUTI2C_SDA_L0Wdelay I2C_SH0RT_DLYI

6、2C_SCL_HIGHdelay I2C_SH0RT_DLYI2C_SCL_LOWdelay I2C_SH0RT_DLYret/骼?6MASTER NACKDAoA /i2c_master_nack:I2C_SDA_0UTPUTI2C_SDA_HIGHdelay I2C_SH0RT_DLYI2C_SCL_HIGHdelay I2C_SH0RT_DLYI2C_SCL_L0Wdelay I2C_SH0RT_DLY ret/D?0?oXO?0/Input: i2c_rw_temp/Used: i2c_ _rw_cnt/i2c_write_8bit：i2c rw ent = 8;i 2c_wr i t

7、 e_8b i t_loop:sic i2c_rw_tempswapc I2C_SDAdelay I2C_SHORT_DLYI2C_SCL_HIGHdelay I2C_SHORT_DLYI2C SCL LOWdelay I2C_SH0RT_DLYdzsn i2c_rw_cntgoto i2c_write_8bit_loopret/?A0?dxo?0/Used: i2c_ _rw_cnt/Output: i2c_rw_temp /i2c_read_8bit：i2c_rw_temp = 0;i2c rw ent = 8;delay I2C_SHORT_DLYi2c_read_8bit_loop:I

8、2C_SCL_HIGHdelay I2C_SHORT_DLYswapc I2C_SDAsic i2c_rw_tempI2C_SCL_LOWdelay I2C_SHORT_DLYdzsn i2c_rw_cntgoto i2c_read_8bit_loopret/Input: i2c_rw_addr / i2c_rw_cmd/Used: i2c_ _rw_cnt/ i2c_rw_temp /Output: i2c_rw_bytei2c_read_byte：/startcall i2c_start/write device address(write) i2c_rw_temp = i2c_rw_cm

9、d; call i2c_write_8bit/slave ackcal1 i2c_slave_ack/write register address i2c_rw_temp = i2c_rw_addr;call i2c_write_8bit/slave ack/dont check ACKcal1 i2c_slave_ack/start repeatcall i2c_start/write device address(read) i2c_rw_temp = i2c_rw_cmd; i2c_rw_temp 0 二 1;call i2c_write_8bit/slave ack/dont chec

10、k ACKI2C_SDA_INPUTdelay I2C_SHORT_DLYI2C_SCL_HIGHdelay I2C_SHORT_DLYI2C_SCL_LOWdelay I2C_SHORT_DLY /OaAi? 10fia（；6?dI2C_SDA?6Axa ? fia?d/read datai2c_rw_temp = 0;call i2c_read_8biti2c_rw_byte = i2c_rw_temp; /store data/master nackcall i2c_master_nack/stopcall i2c_stop/retunedelay I2C_LONG_DLYwdreset

11、ret/Input: i2c_rw_addr / i2c_rw_byte / i2c_rw_cmd /Used: i2c_rw_cnt/ i2c_rw_temp /i2c_write_byte:/startcall i2c_start/write device address i2c_rw_temp = i2c_rw_cmd;call i2c_write_8bit/slave ack/dont check ACKcall i2c_slave_ack/write register address i2c_rw_temp = i2c_rw_addr;call i2c_write_8bit/slav

12、e ack/dont check ACKcal1 i2c_slave_ack/write datai2c_rw_temp = i2c_rw_byte;call i2c_write_8bit/slave ack/dont check ACKcall i2c_slave_ack/stopcall i2c_stop/retunedelay I2C_L0NG_DLYwdresetretEEPRONLRW.CN equ OxAO/?CyAu: eeprom_read_byte /Input:i2c_rw_addr/Used: i2c. _rw_cnt/ i2c_rw_temp/Output: i2c_rw_byte/eeprom_read_byte:i2c_rw_cmd = EEPROM_RW_CMD;goto i2c_read_byte / X ?0a0aA 1 6AmA( 10 Xa/ /?yAu: eeprom_write_byte /In