improved error handling of OW devices

src/CANNode.cpp

@@ -29,7 +29,7 @@
 #define DS2406_WRITE_STATUS 0x55
 #define DS2406_READ_STATUS  0xaa
 #define DS2406_CHANNEL_ACCESS  0xf5
-#define DS2406_CHANNEL_CONTROL1 0x4c // 01001100 - Read Both Pins
+#define DS2406_CHANNEL_CONTROL1 0xcc // 11001100 - Read Both Pins, reset alarm
 #define DS2406_CHANNEL_CONTROL2 0xff // for future dev
 #define SKIP_ROM 0xCC
 #define PIO_A 0x20
@@ -230,7 +230,7 @@ void loop(void)
 {
   // service software timers based on Metro tick
   if ( METRO_OW_search.check() ) {
-    OW_1.reset_search();
+  OW_1.reset_search();
     while(OW_1.search(addr) == 1) {
         if ( OneWire::crc8( addr, 7) != addr[7]) {
             Serial.print("CRC is not valid!\n");
@@ -260,9 +260,25 @@ void loop(void)
       }
   }
   if (METRO_OW_read.check() ) {
+    int8_t retry = 0;
     for (uint8_t s_idx = 0; switches[s_idx].nick != 0; ++s_idx ){
       readout = read_DS2406(switches[s_idx].addr);
-      //if ((switches_state[s_idx] != readout) && (readout & 1<<7)) {
+      if (readout == 255){
+        if (switches_state[s_idx] != 255) {
+          ++retry;
+          if (retry <= 3) {
+            #if DEBUG
+              Serial.print(F("Retrying "));
+              Serial.print(switches[s_idx].nick);
+              Serial.print(F(" for "));
+              Serial.println(retry);
+            #endif /* DEBUG */
+            --s_idx; }
+          else { retry=0;}
+        }
+        continue;
+      }
+//      if ((switches_state[s_idx] != readout) && (readout != 255 )) {
       if (switches_state[s_idx] != readout) {
         tmp = readout ^ switches_state[s_idx];
         switches_state[s_idx] = readout;

src/Node_3_def.h

@@ -28,14 +28,12 @@
 static uint8_t node_id PROGMEM= { NODE_ID };
 static OW_switch_t switches[N_SWITCHES] PROGMEM={
 //  nick, addr[8], event_tag[pioA_FALL, pioA_RISE, pioB_FALL, pioB_RISE]
- { 255, { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0, 0, 0, 0 } },
- { 11, { 0x12, 0xF2, 0x2A, 0x66, 0x0, 0x0, 0x0, 0x41 }, { 0, 0, 0, 0 } }, // EZ -> Flur
- { 12, { 0x12, 0x37, 0x8A, 0x4F, 0x0, 0x0, 0x0, 0xE5 }, { 10, 10, 10, 10 } },
+ { 11, { 0x12, 0xF2, 0x2A, 0x66, 0x0, 0x0, 0x0, 0x41 }, { 1, 1, 0, 0 } }, // EZ -> Flur
+ { 12, { 0x12, 0x37, 0x8A, 0x4F, 0x0, 0x0, 0x0, 0xE5 }, { 2, 2, 2, 2 } }, // im keller TEST
  { 13, { 0x12, 0x71, 0x51, 0x57, 0x0, 0x0, 0x0, 0x28 }, { 2, 2, 0, 0 } }, // Küche  Kühlschank
- { 21, { 0x12, 0x86, 0xB4, 0x54, 0x0, 0x0, 0x0, 0x5F }, { 3, 3, 4, 4 } },
+ //{ 21, { 0x12, 0x86, 0xB4, 0x54, 0x0, 0x0, 0x0, 0x5F }, { 3, 3, 4, 4 } },
  { 22, { 0x12, 0x84, 0xAD, 0x4F, 0x0, 0x0, 0x0, 0x12 }, { 1, 1, 2, 2 } }, // EZ -> Küche
- { 31, { 0x12, 0x88, 0xDD, 0x53, 0x0, 0x0, 0x0, 0x28 }, { 210, 211, 220, 221 } }, // Roldenschalter (A - UP, B - DOWN)
- { 0, { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0, 0, 0, 0 } }
+// { 31, { 0x12, 0x88, 0xDD, 0x53, 0x0, 0x0, 0x0, 0x28 }, { 210, 211, 220, 221 } }, // Roldenschalter (A - UP, B - DOWN)
 };
 static uint8_t switches_state[N_SWITCHES];
 static outputs_t outputs[N_OUTPUTS] PROGMEM={