https://community.nxp.com/t5/NXP-Designs/PN5180-EEPROM-new-value-dont-writed-to-EEPROM/m-p/1295599#M904 <P>Hello developers</P><P>In my example, can't I write a new value to the EEPROM?<BR />I did not find an example for recording anywhere in the description.<BR />How to write a new value to the EEPROM correctly?</P><LI-CODE lang="cpp"> // 0x34 LPCD_REFERENCE_VALUE RW 1 //#define LPCD_REFERENCE_VALUE (0x34) Serial.println(F("----------------------------------")); Serial.println(F("Reading LPCD_REFERENCE_VALUE ...")); uint8_t LPCD_REFERENCE_VALUE_v[1]; nfc.readEEprom(LPCD_REFERENCE_VALUE, LPCD_REFERENCE_VALUE_v, sizeof(LPCD_REFERENCE_VALUE_v) ); Serial.print(F("LPCD_REFERENCE_VALUE= ")); Serial.print(LPCD_REFERENCE_VALUE_v[0], HEX); Serial.println(" "); // OLD Value LPCD_REFERENCE_VALUE= 8 dec 8 // New value LPCD_REFERENCE_VALUE= AC dec 172 uint8_t LPCD_REFERENCE_VALUE_vv[1]; LPCD_REFERENCE_VALUE_vv[0] = 172; nfc.writeEEPROM(LPCD_REFERENCE_VALUE, LPCD_REFERENCE_VALUE_vv, sizeof(LPCD_REFERENCE_VALUE_vv) ); Serial.println(F("------------ CHECK NEW VALUE ---------------")); Serial.println(F("Reading LPCD_REFERENCE_VALUE ...")); nfc.readEEprom(LPCD_REFERENCE_VALUE, LPCD_REFERENCE_VALUE_v, sizeof(LPCD_REFERENCE_VALUE_v) ); Serial.print(F("LPCD_REFERENCE_VALUE= ")); Serial.print(LPCD_REFERENCE_VALUE_v[0], HEX); Serial.println(" "); exit(- 1);</LI-CODE><P>Alexey.</P> Mon, 21 Jun 2021 18:10:32 GMT AlanSbor 2021-06-21T18:10:32Z https://community.nxp.com/t5/NXP-Designs/PN5180-EEPROM-new-value-dont-writed-to-EEPROM/m-p/1295599#M904 <P>Hello developers</P><P>In my example, can't I write a new value to the EEPROM?<BR />I did not find an example for recording anywhere in the description.<BR />How to write a new value to the EEPROM correctly?</P><LI-CODE lang="cpp"> // 0x34 LPCD_REFERENCE_VALUE RW 1 //#define LPCD_REFERENCE_VALUE (0x34) Serial.println(F("----------------------------------")); Serial.println(F("Reading LPCD_REFERENCE_VALUE ...")); uint8_t LPCD_REFERENCE_VALUE_v[1]; nfc.readEEprom(LPCD_REFERENCE_VALUE, LPCD_REFERENCE_VALUE_v, sizeof(LPCD_REFERENCE_VALUE_v) ); Serial.print(F("LPCD_REFERENCE_VALUE= ")); Serial.print(LPCD_REFERENCE_VALUE_v[0], HEX); Serial.println(" "); // OLD Value LPCD_REFERENCE_VALUE= 8 dec 8 // New value LPCD_REFERENCE_VALUE= AC dec 172 uint8_t LPCD_REFERENCE_VALUE_vv[1]; LPCD_REFERENCE_VALUE_vv[0] = 172; nfc.writeEEPROM(LPCD_REFERENCE_VALUE, LPCD_REFERENCE_VALUE_vv, sizeof(LPCD_REFERENCE_VALUE_vv) ); Serial.println(F("------------ CHECK NEW VALUE ---------------")); Serial.println(F("Reading LPCD_REFERENCE_VALUE ...")); nfc.readEEprom(LPCD_REFERENCE_VALUE, LPCD_REFERENCE_VALUE_v, sizeof(LPCD_REFERENCE_VALUE_v) ); Serial.print(F("LPCD_REFERENCE_VALUE= ")); Serial.print(LPCD_REFERENCE_VALUE_v[0], HEX); Serial.println(" "); exit(- 1);</LI-CODE><P>Alexey.</P> Mon, 21 Jun 2021 18:10:32 GMT https://community.nxp.com/t5/NXP-Designs/PN5180-EEPROM-new-value-dont-writed-to-EEPROM/m-p/1295599#M904 AlanSbor 2021-06-21T18:10:32Z