1 files changed, 61 insertions, 0 deletions

diff --git a/arduino/rpmcount/config.cpp b/arduino/rpmcount/config.cpp
new file mode 100755
index 0000000..a46c663
--- /dev/null
+++ b/arduino/rpmcount/config.cpp
@@ -0,0 +1,61 @@
+#include "config.h"
+
+#include <Arduino.h>
+#include <EEPROM.h>
+
+#define ROM_INITIALISED 17
+
+#define DEFAULT_SIGNALS_PER_RPM 133
+#define DEFAULT_START_DELAY_MILLIS 1000
+#define DEFAULT_RPM_COUNT 5000
+
+static Config config;
+
+int writeLong (int address, unsigned long val)
+{
+    const char* p = (char*) &val;
+    int i = 0;
+    for (; i < sizeof(val); ++i, ++p)
+    {
+        EEPROM.write(address + i, *p);
+    }
+    return address + i;
+}
+
+int readLong (int address, unsigned long& val)
+{
+    char* p = (char*) &val;
+    int i = 0;
+    for (; i < sizeof(val); ++i, ++p)
+    {
+        *p = EEPROM.read(address + i);
+    }
+    return address + i;
+}
+
+const Config& readConfig ()
+{
+    byte initialised = EEPROM.read(0);
+    if (initialised != ROM_INITIALISED)
+    {
+        int addr = 1;
+        addr = writeLong(addr, DEFAULT_START_DELAY_MILLIS);
+        addr = writeLong(addr, DEFAULT_RPM_COUNT);
+        addr = writeLong(addr, DEFAULT_SIGNALS_PER_RPM);
+        EEPROM.write(0, ROM_INITIALISED);
+    }
+    int addr = 1;
+    addr = readLong(addr, config.startDelay);
+    addr = readLong(addr, config.rpmCount);
+    addr = readLong(addr, config.signalsPerRPM);
+    return config;
+}
+
+void writeConfig (const Config& config)
+{
+    int addr = 1;
+    addr = writeLong(addr, config.startDelay);
+    addr = writeLong(addr, config.rpmCount);
+    addr = writeLong(addr, config.signalsPerRPM);
+    EEPROM.write(0, ROM_INITIALISED);
+}