Revision 4:dd8dc04d561a, committed 2015-10-16

Comitter:

jepickett

Date:

Fri Oct 16 17:12:47 2015 +0000

Parent:

3:fa15d594858c

Commit message:

initial commit of SparkFun moisture sensor on mDot

Changed in this revision

--- a/main.cpp	Thu Sep 10 18:23:17 2015 +0000
+++ b/main.cpp	Fri Oct 16 17:12:47 2015 +0000
@@ -4,17 +4,87 @@
 #include <vector>
 #include "MTSLog.h"
 
+// TODO: use config file for these
 // these options must match the settings on your Conduit
 // uncomment the following lines and edit their values to match your configuration
-//static std::string config_network_name = "<lora network id>";
-//static std::string config_network_pass = "<lora network key>";
-//static uint8_t config_frequency_sub_band = 1;
+static std::string config_network_name      = "Schakra_LoRa";
+static std::string config_network_pass      = "Schakra_password";
+static uint8_t config_frequency_sub_band    = 7;
+const uint32_t cSleepPeriodSeconds          = 15;
+const uint32_t cLoRaMaxPacketSize           = 246;
+const float cSensorStartupSeconds           = 0.1f;
+const float cAwakeLedCyclePeriod            = 0.3f;
+const uint32_t cMaxJoinRetries              = 5;
+const uint32_t cJoinRetryWait               = 5;
+
+//#define DEVELOPER_BOARD
+
+#ifdef DEVELOPER_BOARD
+// spark fun moisture sensor
+const PinName sensorPowerPin    = PA_11;    // D7           
+const PinName analogInputPin    = PB_1;     // A0           
+
+// Optional LED to demonstrate power to device/out of sleep. 
+const PinName awakeLedPin       = PA_2;     // D1           
+
+const int32_t onState = 0;
+const int32_t offState = 1;
+#else
+// spark fun moisture sensor
+const PinName sensorPowerPin    = PB_0;     // J3 pin 7     : active high
+const PinName analogInputPin    = PB_1;     // J3 pin 8     : 0V-1V
+                                            // J3 pin 10    : ground
+
+// Optional LED to demonstrate power to device/out of sleep. 
+const PinName awakeLedPin       = PA_5;     // J1 pin 15    : active low
+                                            // J1 pin 19    : GND
+
+const int32_t onState = 1;
+const int32_t offState = 0;
+#endif
 
-int main() {
+DigitalOut  awakeLed    (awakeLedPin,offState);
+DigitalOut  sensorPower (sensorPowerPin, offState);
+
+
+void TurnOnSensor()
+{
+    sensorPower = onState;
+    wait(cSensorStartupSeconds);
+}
+
+void TurnOffSensor()
+{
+    sensorPower = offState;
+#ifdef DEVELOPER_BOARD
+    wait(cSensorStartupSeconds);
+#endif    
+}
+                                          
+void awakeLedToggle(uint32_t cycles)
+{
+    for(uint32_t n = 0; n < cycles; n++)
+    {
+        awakeLed = onState; 
+        wait(cAwakeLedCyclePeriod/10);
+        awakeLed = offState; 
+        wait(cAwakeLedCyclePeriod/10);
+    }
+}
+
+int main()
+{
     int32_t ret;
+    
+    AnalogIn    analogValue (analogInputPin);
+
+    
     mDot* dot;
     std::vector<uint8_t> data;
-    std::string data_str = "hello world!";
+    char buf [cLoRaMaxPacketSize];
+    
+    // indicate device out of sleep
+    awakeLedToggle(1);
     
     // get a mDot handle
     dot = mDot::getInstance();
@@ -30,50 +100,93 @@
     
     dot->setLogLevel(mts::MTSLog::TRACE_LEVEL);
 
+    // max output power    
+    dot->setTxPower (20);
+    
+    // disable Ack return
+    dot->setAck(0);
+
     // set up the mDot with our network information: frequency sub band, network name, and network password
-    // these can all be saved in NVM so they don't need to be set every time - see mDot::saveConfig()
     logInfo("setting frequency sub band");
-    if ((ret = dot->setFrequencySubBand(config_frequency_sub_band)) != mDot::MDOT_OK) {
+    if ((ret = dot->setFrequencySubBand(config_frequency_sub_band)) != mDot::MDOT_OK)
+    {
         logError("failed to set frequency sub band %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
     }
     logInfo("setting network name");
-    if ((ret = dot->setNetworkName(config_network_name)) != mDot::MDOT_OK) {
+    if ((ret = dot->setNetworkName(config_network_name)) != mDot::MDOT_OK)
+    {
         logError("failed to set network name %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
     }
     logInfo("setting network password");
-    if ((ret = dot->setNetworkPassphrase(config_network_pass)) != mDot::MDOT_OK) {
+    if ((ret = dot->setNetworkPassphrase(config_network_pass)) != mDot::MDOT_OK)
+    {
         logError("failed to set network password %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
     }
     logInfo("saving config");
-    if (! dot->saveConfig()) {
+    if (! dot->saveConfig())
+    {
         logError("failed to save configuration");
-    }
+    }    
+
     //*******************************************
     // end of configuration
     //*******************************************
 
-    // attempt to join the network
+    // join the network
     logInfo("joining network");
-    while ((ret = dot->joinNetwork()) != mDot::MDOT_OK) {
-        logError("failed to join network %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
-        wait(2);
+    for(int32_t retry = 0; retry <= cMaxJoinRetries; retry++)
+    {
+        if((ret = dot->joinNetwork()) != mDot::MDOT_OK)
+        {
+            if(retry >= cMaxJoinRetries)
+            {
+                dot->sleep(cSleepPeriodSeconds);
+            }
+            else
+            {
+                logError("failed to join network %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
+                wait(cJoinRetryWait);
+            }
+        }
+        else
+        {
+            logInfo("joined network!!!");
+            break;
+        }
     }
 
+    awakeLedToggle(2);
+
+    TurnOnSensor();
+    wait(cSensorStartupSeconds);
+    float reading = analogValue.read();
+    TurnOffSensor();
+
     // format data for sending to the gateway
-    for (std::string::iterator it = data_str.begin(); it != data_str.end(); it++)
-        data.push_back((uint8_t) *it);
+    vector<uint8_t> buffer;
+    char* p = buf;
+    sprintf( buf, "Moisture=%f volts", reading);
+    while( *p != 0 )
+    {
+        buffer.push_back( *p);
+        p++;
+    }
 
-    while (true) {
-        // send the data
-        // ACKs are enabled by default, so we're expecting to get one back
-        if ((ret = dot->send(data)) != mDot::MDOT_OK) {
-            logError("failed to send", ret, mDot::getReturnCodeString(ret).c_str());
-        } else {
-            logInfo("successfully sent data to gateway");
-        }
+    // send the data
+    // ACKs are enabled by default, so we're expecting to get one back
+    if ((ret = dot->send(buffer)) != mDot::MDOT_OK)
+    {
+        logError("failed to send", ret, mDot::getReturnCodeString(ret).c_str());
+    }
+    else
+    {
+        logInfo("successfully sent data to gateway");
+    }
 
-        wait(5);
-    }
+    awakeLedToggle(3);
+
+    // Deep sleep and awake to RTC. Wake is essentially reboot.
+    dot->sleep(cSleepPeriodSeconds);
 
     return 0;
 }

--- a/mbed-rtos.lib	Thu Sep 10 18:23:17 2015 +0000
+++ b/mbed-rtos.lib	Fri Oct 16 17:12:47 2015 +0000
@@ -1,1 +1,1 @@
-http://mbed.org/users/mbed_official/code/mbed-rtos/#ef0a22cdf839
+http://mbed.org/users/mbed_official/code/mbed-rtos/#12552ef4e980

--- a/mbed.bld	Thu Sep 10 18:23:17 2015 +0000
+++ b/mbed.bld	Fri Oct 16 17:12:47 2015 +0000
@@ -1,1 +1,1 @@
-http://mbed.org/users/mbed_official/code/mbed/builds/8ed44a420e5c
\ No newline at end of file
+http://mbed.org/users/mbed_official/code/mbed/builds/34e6b704fe68
\ No newline at end of file