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- /*
- Copyright (c) 2014 Arduino. All right reserved.
-
- This library is free software; you can redistribute it and / or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- See the GNU Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, write to the Free Software
- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110 - 1301 USA
- */
-
- #include "extEEPROM.h"
-
- extEEPROM myEEPROM(kbits_256, 1, 64, 0x57);
-
- void setup(void)
- {
- SerialUSB.begin(115200);
- while (!SerialUSB) {
- ;
- }
-
- byte i2cStat = myEEPROM.begin(myEEPROM.twiClock100kHz);
- if ( i2cStat != 0 ) {
- SerialUSB.println(F("I2C Problem"));
- }
-
- SerialUSB.println(
- F("EEPROM Memory commands: read:(a)(l)(r) , write:(a)(d)(w), next read data (n)"));
- SerialUSB.println(F("- Commands TO PRESS:"));
- SerialUSB.println(F("\t a : memory address to read / write"));
- SerialUSB.println(F("\t d : data to write"));
- SerialUSB.println(F("\t l : data to write"));
- SerialUSB.println(F("\t r : read command"));
- SerialUSB.println(F("\t w : write command"));
- }
-
- unsigned long address = 0;
- const unsigned int maxDataSize = 1024; //0x8000; // 32 k bytes (32768 = 0x8000) = 256 kbits
-
- byte data[maxDataSize] = {'p', 'i', 'p', 'p', 'o'};
- unsigned int dataSize = 5;
-
- void eprom_read_write(bool write)
- {
- byte i2cStat = 0;
- if (write) {
- i2cStat = myEEPROM.write(address, data, dataSize);
- } else {
- memset(data, 0, maxDataSize);
- i2cStat = myEEPROM.read(address, data, dataSize);
- }
- if ( i2cStat != 0 ) {
- //there was a problem
- SerialUSB.print(F("I2C Problem: "));
- if ( i2cStat == EEPROM_ADDR_ERR) {
- SerialUSB.println(F("Wrong address"));
- } else {
- SerialUSB.print(F("I2C error: "));
- SerialUSB.print(i2cStat);
- SerialUSB.println(F(""));
- }
- }
- }
-
-
- void parse(char inChar)
- {
- const char addr_len = 5;
- char addr_char[addr_len] = "";
- const char data_len = 3;
- char data_char[data_len] = "";
- char size_char[data_len] = "";
- char inc = 0, i = 0, j = 0;
-
- switch (inChar) {
- case 'a':
- SerialUSB.print(F("Insert Address as 4 Hex chars (without '0x'): "));
-
- while (i < 4) {
- while (SerialUSB.available() <= 0)
- ;
- inc = SerialUSB.read();
-
- if (inc == 'q') {
- return;
- }
-
- addr_char[i] = inc;
- ++i;
- }
- address = (unsigned long)strtol(addr_char, NULL, 16);
- SerialUSB.println(address);
- break;
-
- case 'd':
- SerialUSB.print(F("Insert Hex data sequence (without '0x'), return to enter: "));
- memset(data, 0, maxDataSize);
- while (true) {
- while (SerialUSB.available() <= 0)
- ;
- inc = SerialUSB.read();
- if (inc == 'q') {
- return;
- }
- if (inc == '\r' || inc == '\n') {
- break;
- }
-
- if (inc >= 'a' && inc <= 'f') {
- data[j] += inc - 'a' + 10;
- } else if (inc >= 'A' && inc <= 'F') {
- data[j] += inc - 'A' + 10;
- } else if (inc >= '0' && inc <= '9') {
- data[j] += inc - '0';
- } else {
- return;
- }
-
- if (i % 2) {
- j++;
- } else {
- data[j] = data[j] << 4;
- }
- i++;
- }
- dataSize = j;
- SerialUSB.println(dataSize);
- SerialUSB.println(F(""));
- break;
- case 'l':
- SerialUSB.print(F("Insert data len as 2 Hex chars (without '0x'): "));
- while (i < 2) {
- while (SerialUSB.available() <= 0)
- ;
- inc = SerialUSB.read();
- if (inc == 'q') {
- return;
- }
-
- size_char[i] = inc;
- ++i;
- if (inc == '\n') {
- return;
- }
- }
-
- dataSize = (unsigned int)strtol(size_char, NULL, 16);
- SerialUSB.println(dataSize);
- break;
-
-
- case 'n':
- address += dataSize;
- /* FALLTHROUGH */
- case 'r':
- SerialUSB.print(F("reading address: "));
- SerialUSB.println(address, HEX);
-
- eprom_read_write(false);
- for (i = 0; i < dataSize ; ++i) {
- SerialUSB.print(data[i], HEX);
- SerialUSB.print(F(" "));
- }
- SerialUSB.println();
-
- break;
-
- case 'w':
- SerialUSB.print(F("writing at address: "));
- SerialUSB.print(address, HEX);
- SerialUSB.print(F(", len: "));
- SerialUSB.println(address, dataSize);
- for (i = 0; i < dataSize ; ++i) {
- SerialUSB.print(data[i], HEX);
- SerialUSB.print(F(" "));
- }
- eprom_read_write(true);
- SerialUSB.println();
-
- break;
- case 'T':
- SerialUSB.println(F("Memory test: writing and verifying the whole memory"));
- break;
-
- default:
- break;
- }
- }
-
-
- void loop(void)
- {
- if (SerialUSB.available() > 0) {
- char inChar = SerialUSB.read();
- SerialUSB.print(inChar);
- parse(inChar);
- }
-
- delay(10);
- }
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