Diff: prefs.cpp

Revision:

0:f6e68b4ce169

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/prefs.cpp	Mon Feb 09 13:40:46 2015 +0000
@@ -0,0 +1,185 @@
+/*
+ * VFD Modular Clock - mbed
+ * (C) 2011-14 Akafugu Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option) any later
+ * version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ */
+
+#include "global.h"
+
+#include "prefs.h"
+#include "DipCortex-EEprom.h"
+
+#include "VFDDisplay.h"
+#include "IV18Display.h"
+#include "flw.h"
+
+const uint8_t sig0 = 0x42;
+const uint8_t sig1 = 0x66;
+
+PrefsData prefs_data;
+
+extern IV18Display display;
+extern DigitalOut led;
+extern FourLetterWord flw;
+
+static int s_pref_year;
+static int s_pref_month;
+static int s_pref_day;
+
+uint8_t crc8(const void *vptr, int len)
+{
+    const uint8_t *data = static_cast<const uint8_t *>(vptr);
+    unsigned crc = 0;
+    int i, j;
+    
+    for (j = len; j; j--, data++) {
+        crc ^= (*data << 8);
+        for(i = 8; i; i--) {
+            if (crc & 0x8000)
+                crc ^= (0x1070 << 3);
+            crc <<= 1;
+        }
+    }
+    
+    return (uint8_t)(crc >> 8);
+}
+
+void init_prefs()
+{
+    IAP_Init();
+    
+    IAP_Eeprom_Read(0, prefs_data.buf, PREFS_SIZE);
+    
+    bool initialized = false;
+    
+    // check if eeprom has been initialized
+    if (prefs_data.buf[0] == sig0 && prefs_data.buf[1] == sig1) {
+        // check crc
+        uint8_t calc_crc = crc8(prefs_data.buf, PREFS_SIZE-1);
+        
+        if (calc_crc == prefs_data.prefs.crc)
+            initialized = true;
+    }
+    
+    if (!initialized) {        
+        memset(prefs_data.buf, 0, PREFS_SIZE);
+        prefs_data.prefs.sig0 = sig0;
+        prefs_data.prefs.sig1 = sig1;
+        prefs_data.prefs.disp_24h = 1;
+        prefs_data.prefs.brightness = 10;
+        prefs_data.prefs.dots = 1;
+        prefs_data.prefs.gps = 1;
+        prefs_data.prefs.gps_tzh = 9; // Tokyo, Japan
+        prefs_data.prefs.gps_tzm = 0;
+        prefs_data.prefs.auto_date = 1;
+        prefs_data.prefs.flw = 0;
+        prefs_data.prefs.crc = crc8(prefs_data.buf, PREFS_SIZE-1);
+        
+        IAP_Eeprom_Write(0, prefs_data.buf, PREFS_SIZE);
+    }
+}
+
+void save_prefs()
+{
+    uint8_t calc_crc = crc8(prefs_data.buf, PREFS_SIZE-1);
+    
+    if (calc_crc != prefs_data.prefs.crc) {
+        prefs_data.prefs.crc = calc_crc;
+        IAP_Eeprom_Write(0, prefs_data.buf, PREFS_SIZE);
+    }
+}
+
+PrefsData* get_prefs()
+{
+    if (prefs_data.prefs.flw == 2)
+        flw.setCensored(false);
+    else
+        flw.setCensored(true); 
+
+    return &prefs_data;    
+}
+
+void set_year(int year)
+{
+    s_pref_year = year;
+}
+
+void set_month(int month)
+{
+    s_pref_month = month;
+}
+
+void set_day(int day)
+{
+    s_pref_day = day;
+}
+
+
+void set_extra_prefs(int year, int month, int day)
+{
+    s_pref_year = year;
+    s_pref_month = month;
+    s_pref_day = day;
+}
+
+void get_extra_prefs(int& year, int& month, int& day)
+{
+    year = s_pref_year;
+    month = s_pref_month;
+    day = s_pref_day;
+}
+
+void set_pref(PREFS pref, uint32_t value)
+{
+    switch (pref) {
+    case PREF_24H:
+        prefs_data.prefs.disp_24h = value;
+        break;
+    case PREF_BRIGHTNESS:
+        prefs_data.prefs.brightness = value;
+        display.setBrightness(value);
+        break;
+    case PREF_ALARM:
+        prefs_data.prefs.alarm = value;
+        break;
+    case PREF_YEAR:
+        s_pref_year = value;
+        break;
+    case PREF_MONTH:
+        s_pref_month = value;
+        break;
+    case PREF_DAY:
+        s_pref_day = value;
+        break;
+    case PREF_DOTS:
+        prefs_data.prefs.dots = value;
+        break;
+    case PREF_GPS:
+        prefs_data.prefs.gps = value;
+        break;
+    case PREF_GPS_TZH:
+        prefs_data.prefs.gps_tzh = value;
+        break;
+    case PREF_GPS_TZM:
+        prefs_data.prefs.gps_tzm = value;
+        break;
+    case PREF_AUTODATE:
+        prefs_data.prefs.auto_date = value;
+        break;
+    case PREF_FLW:
+        prefs_data.prefs.flw = value;
+        break;
+    default:
+        break;
+    }        
+}
+