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- //Test extEEPROM library.
- //Writes the EEPROM full of 32-bit integers and reads them back to verify.
- //Wire a button from digital pin 6 to ground, this is used as a start button
- //so the sketch doesn't do unnecessary EEPROM writes every time it's reset.
- //Jack Christensen 09Jul2014
- //Paolo Paolucci 17Mar2016 (fix 28Jun2017)
- //Mik 03Jan2017 (configured Library to use the Wire1 as I2C channel)
-
- #include <extEEPROM.h> //https://github.com/PaoloP74/extEEPROM
-
- //One 24LC256 EEPROMs on the bus
- const uint32_t totalKBytes = 32; //for read and write test functions
- extEEPROM eep(kbits_256, 1, 64, 0x57); //device size, number of devices, page size
-
- const uint8_t btnStart = 6; //start button
-
- void setup(void)
- {
- uint8_t eepStatus;
- pinMode(btnStart, INPUT_PULLUP);
- Serial.begin(115200);
- while (!SerialUSB) {}
-
- bool channelInsert = false;
- Serial.println(F("Select the number of Wire channel use the eeprom"));
- Serial.println(F("0 = Wire"));
- Serial.println(F("1 = Wire1"));
- Serial.println(F("...."));
- Serial.println(F("x = WIRE_INTERFACES_COUNT"));
-
- do {
- if (Serial.available()) {
- char I2Cchannel = Serial.read();
-
- // only number that are less than WIRE_INTERFACES_COUNT are allowed
- if ((I2Cchannel > '0') && (I2Cchannel < ('0' + WIRE_INTERFACES_COUNT))) {
- channelInsert = true;
- }
-
- switch ((I2Cchannel - '0')) {
-
- case 0:
- Serial.println(F("Using the default Wire interface"));
- eepStatus = eep.begin(eep.twiClock400kHz); //go fast!
- break;
-
- case 1:
- Serial.println(F("Using the Wire1 interface"));
- eepStatus = eep.begin(eep.twiClock400kHz, &Wire1); //go fast!
- break;
-
- /*
- Uncomment till the number of WIRE_INTERFACES_COUNT of your Arduino board
- case 2:
- Serial.println(F("Using the Wire2 interface"));
- eepStatus = eep.begin(eep.twiClock400kHz, &Wire2); //go fast!
- break;
-
- case 3:
- Serial.println(F("Using the Wire3 interface"));
- eepStatus = eep.begin(eep.twiClock400kHz, &Wire3); //go fast!
- break;
-
- case 4:
- Serial.println(F("Using the Wire4 interface"));
- eepStatus = eep.begin(eep.twiClock400kHz, &Wire4); //go fast!
- break;
-
- case 5:
- Serial.println(F("Using the Wire5 interface"));
- eepStatus = eep.begin(eep.twiClock400kHz, &Wire5); //go fast!
- break;*/
-
- default:
- Serial.println(F("A wrong channel has been inserted (Arduino manage max 5)"));
- break;
- }
- }
- } while (!channelInsert);
-
- if (eepStatus) {
- Serial.print(F("extEEPROM.begin() failed, status = "));
- Serial.println(eepStatus);
- while (1);
- }
-
- Serial.println(F("Started !!"));
-
- uint8_t chunkSize =
- 64; //this can be changed, but must be a multiple of 4 since we're writing 32-bit integers
- // eeErase(chunkSize, 0, totalKBytes * 1024 - 1);
- eeWrite(chunkSize);
- eeRead(chunkSize);
-
- dump(0, 32); //the first 32 bytes
- dump(32256, 64); //the last 64 bytes
- //dump(32512, 64); //across the device boundary
- //dump(65520, 16); //the last 16 bytes
- }
-
- void loop(void)
- {
- }
-
- //write test data (32-bit integers) to eeprom, "chunk" bytes at a time
- void eeWrite(uint8_t chunk)
- {
- chunk &= 0xFC; //force chunk to be a multiple of 4
- uint8_t data[chunk];
- uint32_t val = 0;
- Serial.println(F("Writing..."));
- uint32_t msStart = millis();
-
- for (uint32_t addr = 0; addr < totalKBytes * 1024; addr += chunk) {
- if ( (addr & 0xFFF) == 0 ) {
- Serial.println(addr);
- }
- for (uint8_t c = 0; c < chunk; c += 4) {
- data[c + 0] = val >> 24;
- data[c + 1] = val >> 16;
- data[c + 2] = val >> 8;
- data[c + 3] = val;
- ++val;
- }
- eep.write(addr, data, chunk);
- }
- uint32_t msLapse = millis() - msStart;
- Serial.print(F("Write lapse: "));
- Serial.print(msLapse);
- Serial.println(F(" ms"));
- }
-
- //read test data (32-bit integers) from eeprom, "chunk" bytes at a time
- void eeRead(uint8_t chunk)
- {
- chunk &= 0xFC; //force chunk to be a multiple of 4
- uint8_t data[chunk];
- uint32_t val = 0, testVal;
- Serial.println(F("Reading..."));
- uint32_t msStart = millis();
-
- for (uint32_t addr = 0; addr < totalKBytes * 1024; addr += chunk) {
- if ( (addr & 0xFFF) == 0 ) {
- Serial.println(addr);
- }
- eep.read(addr, data, chunk);
- for (uint8_t c = 0; c < chunk; c += 4) {
- testVal = ((uint32_t)data[c + 0] << 24) + ((uint32_t)data[c + 1] << 16) + ((
- uint32_t)data[c + 2] << 8) + (uint32_t)data[c + 3];
- if (testVal != val) {
- Serial.print(F("Error @ addr "));
- Serial.print(addr + c);
- Serial.print(F(" Expected "));
- Serial.print(val);
- Serial.print(F(" Read "));
- Serial.print(testVal);
- Serial.print(F(" 0x"));
- Serial.println(testVal, HEX);
- }
- ++val;
- }
- }
- uint32_t msLapse = millis() - msStart;
- Serial.print(F("Last value: "));
- Serial.print(val);
- Serial.print(F(" Read lapse: "));
- Serial.print(msLapse);
- Serial.println(F(" ms"));
- }
-
- //write 0xFF to eeprom, "chunk" bytes at a time
- void eeErase(uint8_t chunk, uint32_t startAddr, uint32_t endAddr)
- {
- chunk &= 0xFC; //force chunk to be a multiple of 4
- uint8_t data[chunk];
- Serial.println(F("Erasing..."));
- for (int i = 0; i < chunk; i++) {
- data[i] = 0xFF;
- }
- uint32_t msStart = millis();
-
- for (uint32_t a = startAddr; a <= endAddr; a += chunk) {
- if ( (a & 0xFFF) == 0 ) {
- Serial.println(a);
- }
- eep.write(a, data, chunk);
- }
- uint32_t msLapse = millis() - msStart;
- Serial.print(F("Erase lapse: "));
- Serial.print(msLapse);
- Serial.print(F(" ms"));
- }
-
- //dump eeprom contents, 16 bytes at a time.
- //always dumps a multiple of 16 bytes.
- void dump(uint32_t startAddr, uint32_t nBytes)
- {
- Serial.print(F("EEPROM DUMP 0x"));
- Serial.print(startAddr, HEX);
- Serial.print(F(" 0x"));
- Serial.print(nBytes, HEX);
- Serial.print(F(" "));
- Serial.print(startAddr);
- Serial.print(F(" "));
- Serial.println(nBytes);
- uint32_t nRows = (nBytes + 15) >> 4;
-
- uint8_t d[16];
- for (uint32_t r = 0; r < nRows; r++) {
- uint32_t a = startAddr + 16 * r;
- eep.read(a, d, 16);
- Serial.print(F("0x"));
- if ( a < 16 * 16 * 16 ) {
- Serial.print(F("0"));
- }
- if ( a < 16 * 16 ) {
- Serial.print(F("0"));
- }
- if ( a < 16 ) {
- Serial.print(F("0"));
- }
- Serial.print(a, HEX);
- Serial.print(F(" "));
- for ( int c = 0; c < 16; c++ ) {
- if ( d[c] < 16 ) {
- Serial.print(F("0"));
- Serial.print(d[c], HEX);
- Serial.print( c == 7 ? " " : " ");
- }
- }
- Serial.println(F(""));
- }
- }
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