Add sleep

MultiNode-Tester/MultiNode-Tester.ino

@@ -2,7 +2,7 @@
 #include <RHReliableDatagram.h>
 #include <RH_RF95.h>
 #include <SPI.h>
-#include <TemperatureZero.h>
+#include <TemperatureZero.h>´
 
 
 #define CLIENT_ADDRESS 1
@@ -44,7 +44,7 @@ void setup()
   pinMode(LED_BUILTIN, OUTPUT);
   digitalWrite(LED_BUILTIN, HIGH);
 
-  // Acivating Motor and Digital Outputs, but at LOW level 
+  /*// Acivating Motor and Digital Outputs, but at LOW level
     pinMode(10, OUTPUT);
     digitalWrite(10, LOW);
     pinMode(12, OUTPUT);
@@ -113,6 +113,15 @@ void setup()
 
     // switch of LED after startup
     digitalWrite(LED_BUILTIN, LOW);
+    rfm95.sleep();*/
+  digitalWrite(LED_BUILTIN, LOW);
+  for (int i = 0; i < 10; i++)
+  {
+    digitalWrite(LED_BUILTIN, HIGH);
+    delay(100);
+    digitalWrite(LED_BUILTIN, LOW);
+    delay(100);
+  }
 }
 
 
@@ -125,6 +134,29 @@ uint8_t buf[RH_RF95_MAX_MESSAGE_LEN];
 
 void loop()
 {
+  while (!USBDevice.connected())
+  {
+    LowPower.sleep(1000);
+    USBDevice.init();
+  }
+  for (int i = 0; i < 10; i++)
+  {
+    digitalWrite(LED_BUILTIN, HIGH);
+    delay(100);
+    digitalWrite(LED_BUILTIN, LOW);
+    delay(100);
+  }
+  /*if (USBDevice.connected())
+    digitalWrite(LED_BUILTIN, HIGH);
+    else
+    digitalWrite(LED_BUILTIN, LOW);*/
+  return;
+  digitalWrite(BOOSTEN_PIN, HIGH);
+  delay(2000);
+  digitalWrite(BOOSTEN_PIN, LOW);
+  delay(2000);
+  LowPower.deepSleep(4000);
+  return;
 
   /*
     SerialUSB.println("Sending to rf95_reliable_datagram_server");

MultiNode/Configurator.py

@@ -36,7 +36,7 @@ client_address = 0x1234
 server_address = 0x0001
 
 # In ms
-sensor_update_interval = 3000
+sensor_update_interval = 5000
 device_update_interval = 7000
 jitter = 1000
 

MultiNode/MNLib.cpp

@@ -2,6 +2,7 @@
 #define FLASH_DEBUG 0
 #define EEPROM_EMULATION_SIZE 1024
 #include <FlashStorage_SAMD.h>
+#include <ArduinoLowPower.h>
 
 MNConfiguration configuration;
 RH_RF95 radio(RF_SS_PIN, RF_IRQ_PIN);
@@ -16,6 +17,9 @@ uint32_t last_server_message_id = 0;
 //void init_mn(bool is_client = true)
 void initMN()
 {
+  if (batteryVoltage() < 3.5 && !USBDevice.connected()) // Shut off below this voltage, down to 3.1 V should be OK if the regulator has a dropout of 400 mV and conducts fully if its output is below 3.3 V
+    LowPower.deepSleep();
+    
   //_is_client = is_client;
 
   EEPROM.setCommitASAP(false); // Don't unnecessarily write to the EEPROM
@@ -90,6 +94,7 @@ void initMN()
   temperature_sensor.init();
 
   initializeDevices();
+  initRTC();
 }
 
 void test()
@@ -266,6 +271,8 @@ bool send(uint8_t data[], uint8_t len)
   bool success = true;
   success = success & radio.send(full_data, 2 + 2 + 4 + 1 + len + HASH_LENGTH);
   radio.waitPacketSent(); // What does the returned value here indicate?
+  radio.setModeIdle();
+  radio.sleep();
   return success;
 }
 
@@ -276,6 +283,8 @@ bool receive()
 
   if (radio.recv(buffer, &len))
   {
+    radio.setModeIdle();
+    radio.sleep();
     uint16_t target_address = buffer[0] + ((uint16_t)buffer[1] << 8);
     if ((target_address == configuration.client_address || target_address == 0xFFFF) && buffer[2] == (configuration.server_address & 0xFF) && buffer[3] == (configuration.server_address >> 8 & 0xFF))
     {
@@ -344,9 +353,7 @@ DeviceBase* getDevice(uint8_t pointer)
     device->pin = 0xFF;
   }
   else
-  {
     memcpy(reinterpret_cast<uint8_t*>(device) + 4, &configuration_memory[pointer], device->size());
-  }
 
   return device;
 }
@@ -401,3 +408,41 @@ void sendDeviceData()
   memcpy(&data[5], &temperature, 4);
   send(data, 9);
 }
+
+void initRTC() // https://github.com/arduino-libraries/RTCZero/blob/master/src/RTCZero.cpp
+{
+  PM->APBAMASK.reg |= PM_APBAMASK_RTC;
+#ifndef CRYSTALLESS
+  SYSCTRL->XOSC32K.reg = SYSCTRL_XOSC32K_ONDEMAND |
+                         SYSCTRL_XOSC32K_RUNSTDBY |
+                         SYSCTRL_XOSC32K_EN32K |
+                         SYSCTRL_XOSC32K_XTALEN |
+                         SYSCTRL_XOSC32K_STARTUP(6) |
+                         SYSCTRL_XOSC32K_ENABLE;
+#endif
+
+  GCLK->GENDIV.reg = GCLK_GENDIV_ID(2) | GCLK_GENDIV_DIV(4);
+  while (GCLK->STATUS.reg & GCLK_STATUS_SYNCBUSY);
+#ifdef CRYSTALLESS
+  GCLK->GENCTRL.reg = (GCLK_GENCTRL_GENEN | GCLK_GENCTRL_SRC_OSCULP32K | GCLK_GENCTRL_ID(2) | GCLK_GENCTRL_DIVSEL );
+#else
+  GCLK->GENCTRL.reg = (GCLK_GENCTRL_GENEN | GCLK_GENCTRL_SRC_XOSC32K | GCLK_GENCTRL_ID(2) | GCLK_GENCTRL_DIVSEL );
+#endif
+  while (GCLK->STATUS.reg & GCLK_STATUS_SYNCBUSY);
+  GCLK->CLKCTRL.reg = (uint32_t)((GCLK_CLKCTRL_CLKEN | GCLK_CLKCTRL_GEN_GCLK2 | (RTC_GCLK_ID << GCLK_CLKCTRL_ID_Pos)));
+  while (GCLK->STATUS.bit.SYNCBUSY);
+
+  RTC->MODE0.CTRL.reg &= ~RTC_MODE0_CTRL_ENABLE; // disable RTC
+
+  RTC->MODE0.CTRL.reg |= RTC_MODE0_CTRL_SWRST; // software reset
+
+  RTC->MODE0.CTRL.reg = RTC_MODE0_CTRL_PRESCALER_DIV1024 | RTC_MODE0_CTRL_MODE_COUNT32;
+  RTC->MODE0.CTRL.reg &= ~RTC_MODE0_CTRL_MATCHCLR; // disable clear on match
+
+  RTC->MODE0.CTRL.reg |= RTC_MODE0_CTRL_ENABLE; // enable RTC
+}
+
+uint32_t getRTC()
+{
+  return RTC->MODE1.COUNT.reg;
+}

MultiNode/MNLib.h

@@ -189,4 +189,6 @@ void storeDevice(uint8_t pointer, DeviceBase* device); // Stores a device at the
 void loopMN();
 void sendSensorData();
 void sendDeviceData();
+void initRTC();
+uint32_t getRTC();
 #endif

MultiNode/MultiNode.ino

@@ -5,19 +5,11 @@
 //#define IS_CLIENT
 //#define IS_SERVER
 
-
 unsigned long tick_tracker_sensors = 0;
 unsigned long tick_tracker_device = 0;
 unsigned long next_tick_sensors = 0;
 unsigned long next_tick_device = 0;
-
+unsigned long offset = 0;
-
-
-// Class to manage message delivery and receipt, using the rfm95 declared above
-//RHReliableDatagram rfManager(rfm95, CLIENT_ADDRESS);
-
-// Internal on-chip Temperature sensor
-
 
 void setup()
 {
@@ -39,7 +31,6 @@ void setup()
   tick_tracker_device = millis();
 }
 
-
 void loop()
 {
   if (SerialUSB.available())
@@ -84,10 +75,8 @@ void loop()
         SerialUSB.print("Battery voltage: ");
         SerialUSB.println(batteryVoltage());
 
-        SerialUSB.println();
+        SerialUSB.print("RTC time: ");
-        SerialUSB.println(sizeof(uint16_t) + 1 * (sizeof(float) + sizeof(uint8_t) * 2));
+        SerialUSB.println(RTC->MODE1.COUNT.reg);
-        SerialUSB.println(sizeof(uint16_t));
-        SerialUSB.println(1 * (sizeof(float) + sizeof(uint8_t) * 2));
         SerialUSB.println("END");
         break;
 
@@ -140,7 +129,9 @@ void loop()
 
   loopMN();
 
-  if (millis() >= next_tick_sensors)
+  long now_time = millis() + offset;
+
+  if (now_time >= next_tick_sensors)
   {
     sendSensorData();
     tick_tracker_sensors = tick_tracker_sensors + configuration.sensor_update_interval;
@@ -150,7 +141,7 @@ void loop()
     digitalWrite(LED_BUILTIN, LOW);
   }
 
-  if (millis() >= next_tick_device)
+  if (now_time >= next_tick_device)
   {
     sendDeviceData();
     tick_tracker_device = tick_tracker_device + configuration.device_update_interval;
@@ -159,4 +150,25 @@ void loop()
     delay(2);
     digitalWrite(LED_BUILTIN, LOW);
   }
+
+  long next_tick_device_dt = next_tick_device - now_time;
+  long next_tick_sensors_dt = next_tick_sensors - now_time;
+  long min_delay = min(next_tick_device_dt, next_tick_sensors_dt);
+  
+  if (min_delay > 1000 && !USBDevice.connected())
+  {
+    power_sleep(min_delay);
+    offset += min_delay;
+    //USBDevice.init()
+  }
+}
+
+void power_sleep(uint32_t milliseconds)
+{
+  radio.setModeIdle();
+  //radio.sleep(); Doesn't work
+  setLoopPower(OFF);
+  LowPower.sleep(milliseconds);
+  radio.setModeIdle();
+  delay(100);
 }

Readme.md

@@ -16,3 +16,9 @@ RasPi:
 	C++ programs need to be executed with sudo, or set permissions to use bcm2835 as user
 
 	Execute RasPi/RXTest.py
+
+Reconfiguring a node:
+
+	Attach it via USB
+    Press the reset button (left of USB connector)
+    It will not enter sleep until it is unplugged