PIC16F877A 內(nèi)部EEPROM讀寫實(shí)驗(yàn)利用內(nèi)部函數(shù)

時(shí)間：2018-12-20 18:40:02

關(guān)鍵字： pic16f877a 內(nèi)部eeprom 內(nèi)部函數(shù) 讀寫實(shí)驗(yàn)

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[導(dǎo)讀]/************************************************PIC16F877A 內(nèi)部EEPROM讀寫實(shí)驗(yàn)*******Author:hnrainDate:2010-12-26Version:V0.1Email:hnrain1004@gmail.comForum:http://bbs.cepark.com______________________

/************************************************PIC16F877A 內(nèi)部EEPROM讀寫實(shí)驗(yàn)*******Author:hnrainDate:2010-12-26Version:V0.1Email:hnrain1004@gmail.comForum:http://bbs.cepark.com_______________________________實(shí)驗(yàn)現(xiàn)象:先給內(nèi)部EEPROM的0~7字節(jié)寫數(shù)據(jù)1~8,再讀出第0字節(jié)的內(nèi)容，并判斷讀出來的數(shù)據(jù)是不是1，如果是1則點(diǎn)亮RD0口的LED。重點(diǎn)內(nèi)容：在我們的PIC.h中，給我們提供了兩個(gè)函數(shù)操作內(nèi)部的EEPROM.兩個(gè)函數(shù)為：unsigned char eeprom_read(unsigned char addr);void eeprom_write(unsigned char addr, unsigned char value);*******************************************/#include __CONFIG(HS&WDTDIS&LVPDIS&PWRTEN);//HS振蕩,禁止看門狗,低壓編程關(guān)閉,啟動延時(shí)定時(shí)器unsigned chareeprom_read(unsigned charaddr);voideeprom_write(unsigned charaddr, unsigned charvalue);unsigned charcydata;voidmain(void){unsigned chark;PORTD = 0xff;TRISD = 0x00;for(k = 0; k < 7; k++){eeprom_write(k,k+1);}while(1){do{}while(WR == 1);//等待寫完成cydata = eeprom_read(0);if(cydata == 1){RD0 = 0;}}}