90 lines
2.7 KiB
C++
90 lines
2.7 KiB
C++
/*
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* Copyright (c) 2013 by Felix Rusu <felix@lowpowerlab.com>
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of either the GNU General Public License version 2
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* or the GNU Lesser General Public License version 2.1, both as
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* published by the Free Software Foundation.
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*/
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// This sketch is an example of using the SPIFlash library with a Moteino
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// that has an onboard SPI Flash chip. This sketch listens to a few serial commands
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// Hence type the following commands to interact with the SPI flash memory array:
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// - 'd' dumps the first 256bytes of the flash chip to screen
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// - 'e' erases the entire memory chip
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// - 'i' print manufacturer/device ID
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// - [0-9] writes a random byte to addresses [0-9] (either 0xAA or 0xBB)
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// Get the SPIFlash library from here: https://github.com/LowPowerLab/SPIFlash
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#include <SPIFlash.h>
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#include <RFM12B.h>
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#include <SPI.h>
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#include <avr/wdt.h>
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#define SERIAL_BAUD 115200
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char input = 0;
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long lastPeriod = -1;
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//////////////////////////////////////////
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// flash(SPI_CS, MANUFACTURER_ID)
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// SPI_CS - CS pin attached to SPI flash chip (8 in case of Moteino)
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// MANUFACTURER_ID - OPTIONAL, 0x1F44 for adesto(ex atmel) 4mbit flash
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// 0xEF30 for windbond 4mbit flash
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//////////////////////////////////////////
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SPIFlash flash(8, 0xEF30);
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void setup(){
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Serial.begin(SERIAL_BAUD);
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Serial.print("Start...");
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if (flash.initialize())
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Serial.println("Init OK!");
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else
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Serial.println("Init FAIL!");
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}
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void loop(){
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// Handle serial input (to allow basic DEBUGGING of FLASH chip)
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// ie: display first 256 bytes in FLASH, erase chip, write bytes at first 10 positions, etc
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if (Serial.available() > 0) {
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input = Serial.read();
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if (input == 'd') //d=dump flash area
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{
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Serial.println("Flash content:");
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int counter = 0;
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while(counter<=256){
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Serial.print(flash.readByte(counter++), HEX);
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Serial.print('.');
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}
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Serial.println();
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}
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else if (input == 'e')
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{
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Serial.print("Erasing Flash chip ... ");
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flash.chipErase();
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while(flash.busy());
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Serial.println("DONE");
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}
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else if (input == 'i')
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{
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Serial.print("DeviceID: ");
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Serial.println(flash.readDeviceId(), HEX);
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}
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else if (input >= 48 && input <= 57) //0-9
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{
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Serial.print("\nWriteByte("); Serial.print(input); Serial.print(")");
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flash.writeByte(input-48, millis()%2 ? 0xaa : 0xbb);
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}
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}
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// Periodically blink the onboard LED while listening for serial commands
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if ((int)(millis()/500) > lastPeriod)
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{
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lastPeriod++;
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pinMode(9, OUTPUT);
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digitalWrite(9, lastPeriod%2);
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}
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}
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