seniordesign-firmware Changeset - f12f7ddbf232

Changeset - f12f7ddbf232

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ethanzonca@CL-ENS241-08.cedarville.edu - 12 years ago 2013-02-11 17:05:35
ethanzonca@CL-ENS241-08.cedarville.edu

Slave data aquisition fully functional with multiple slaves, fault-tolerant if slaves do not respond within timeout period

2 files changed with 77 insertions and 75 deletions:

master/master/lib/slavesensors.c

master/master/lib/slavesensors.h

0 comments (0 inline, 0 general)

master/master/lib/slavesensors.c

➞

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@@ @@ -360,24 +360,10 @@ int slavesensors_enterAT() @@
 int xbeeIsOk()
+{
 	uint32_t scanStart = time_millis();
 	uint32_t lastBlink = 0;
 	while(!serial0_hasChar())
+	{
 		if(time_millis() - scanStart > 7000)
+		{
 	if(waitTimeout(2000)) {
 			led_errorcode(ERROR_XBEETIMEOUT);
-			return;
+		return 1;
+		}
 		if(time_millis() - lastBlink > 50)
+		{
 			led_spin();
 			lastBlink = time_millis();
+		}
 		wdt_reset();
+	}
 	char* tmppntr = serial0_readLine();
 	if(strcmp(tmppntr, "OK") == 0)
+	{
@@ @@ -407,6 +393,7 @@ void slavesensors_startprocess() @@
+}
 // TODO: inline. static.
 uint32_t beginRequest = 0;
 void slavesensors_request()
+{
 	if(currentSlave == loggerIndex)
@@ @@ -419,70 +406,14 @@ void slavesensors_request() @@
+		}
+	}
 	slavesensors_selectnode(currentSlave);
 	beginRequest = time_millis();
 	serial_sendCommand("@"); // Request data!
+}
 uint8_t numReadingsToExpect = 0; // number of values that the slave is about to send (testing)
 // TODO: needs to skip logger!
 void slavesensors_process(uint8_t parseResult)
+{
 	if(!requesting)
+	{
 		// we got a command when we didn't request anything. probably skip it.
 		return;
+	}
 	// TODO: timeout. If we're at NODATA for a long time and we are requesting, that's an issue.
 	// TODO: If we time out, WE NEED TO RESET THE PARSER. It could be in a bad state.
 	else if(parseResult == PARSERESULT_NODATA)
+	{
 		// Wait for data
+	}
 	// Finished reception of a message (one sensor data value). If not finished, send out command to get the next one
 	else if(parseResult == PARSERESULT_PARSEOK)
+	{
 		#ifdef DEBUG_GETSLAVEDATA
 		char debug[50];
 		snprintf(debug, 50, "Slave %u sensor %u of total nodes %u\r\n", currentSlave, currentSlaveSensor,nodeCount);
 		serial0_sendString(debug);
 		#endif
 uint8_t numReadingsToExpect = 0; // number of values that the slave is about to send
 		// We got some data, let's handle it
 		// ASCII payload
 		uint8_t len = getPayloadLength();
 		char* load = getPayload();
 		uint8_t type = getPayloadType();
 		int32_t parsedVal = strtol(load, NULL, 10);//atoi(load);
 		// Special case for slave telling us how many things we're about to get
 		if(type + 0x30 == '@')
+		{
 			#ifdef DEBUG_GETSLAVEDATA
 			serial0_sendString("Got an awesome count!\r\n");
 			serial0_sendChar(parsedVal + 0x30);
 			serial0_sendString("\r\n");
 			#endif
 			numReadingsToExpect = parsedVal;
 			currentSlaveSensor = 0;
 			requesting = true;
+		}
 		else
+		{
 			// Store data in structure
 			sensordata_set(currentSlave,type,parsedVal);
 			#ifdef DEBUG_GETSLAVEDATA
 			serial0_sendString("Stored some sexy data!\r\n");
 			#endif
 void gotoNextSlaveOrSensor(bool fail) {
 			// If we finished all sensors for all slaves
 			if(currentSlave >= (nodeCount-1) && currentSlaveSensor >= (numReadingsToExpect-1))
@@ @@ -495,8 +426,13 @@ void slavesensors_process(uint8_t parseR @@
 				currentSlave = 0;
 				currentSlaveSensor = 0;
 				requesting = false;
 		if(!fail)
+		{
 				led_alert();
+			}
+	}
 			// If we finished up one slave, go to the next
 			else if(currentSlaveSensor >= (numReadingsToExpect-1))
+			{
@@ @@ -541,6 +477,71 @@ void slavesensors_process(uint8_t parseR @@
 				//slavesensors_request();	 slaves now send all values at once, we don't need to keep requesting
+			}
+		}
 // TODO: needs to skip logger!
 void slavesensors_process(uint8_t parseResult)
+{
 	if(!requesting)
+	{
 		// we got a command when we didn't request anything. probably skip it.
 		return;
+	}
 	// TODO: timeout. If we're at NODATA for a long time and we are requesting, that's an issue.
 	// TODO: If we time out, WE NEED TO RESET THE PARSER. It could be in a bad state.
 	else if(parseResult == PARSERESULT_NODATA)
+	{
 		// Wait for data
 		if(requesting && time_millis() - beginRequest > 1000) {
 			// if we're requesting, we have no data, and we're over the timeout, this is bad!
 			gotoNextSlaveOrSensor(true);
+		}
+	}
 	// Finished reception of a message (one sensor data value). If not finished, send out command to get the next one
 	else if(parseResult == PARSERESULT_PARSEOK)
+	{
 		#ifdef DEBUG_GETSLAVEDATA
 		char debug[50];
 		snprintf(debug, 50, "Slave %u sensor %u of total nodes %u\r\n", currentSlave, currentSlaveSensor,nodeCount);
 		serial0_sendString(debug);
 		#endif
 		// We got some data, let's handle it
 		// ASCII payload
 		uint8_t len = getPayloadLength();
 		char* load = getPayload();
 		uint8_t type = getPayloadType();
 		int32_t parsedVal = strtol(load, NULL, 10);//atoi(load);
 		// Special case for slave telling us how many things we're about to get
 		if(type + 0x30 == '@')
+		{
 			#ifdef DEBUG_GETSLAVEDATA
 			serial0_sendString("Got an awesome count!\r\n");
 			serial0_sendChar(parsedVal + 0x30);
 			serial0_sendString("\r\n");
 			#endif
 			numReadingsToExpect = parsedVal;
 			currentSlaveSensor = 0;
 			requesting = true;
+		}
 		else
+		{
 			// Store data in structure
 			sensordata_set(currentSlave,type,parsedVal);
 			#ifdef DEBUG_GETSLAVEDATA
 			serial0_sendString("Stored some sexy data!\r\n");
 			#endif
 			gotoNextSlaveOrSensor(false);
+		}
+	}
 	// If fail, try retransmit. Or we could skip and hit it next time.

master/master/lib/slavesensors.h

➞

Show inline comments

@@ @@ -41,6 +41,7 @@ uint8_t slavesensors_getselectednode(); @@
 void slavesensors_selectnode(uint8_t nodeIndex);
 void slavesensors_startprocess();
 void slavesensors_request();
 void gotoNextSlaveOrSensor(bool fail);
 void slavesensors_process(uint8_t parseResult);
 int xbeeIsOk();
 void slavesensors_selectlogger();

0 comments (0 inline, 0 general)