X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=src%2Fserver%2Fhandler_coke.c;h=79d0a4697b2bdb4218a43cf119bb7d2a6e84c26e;hb=aab09714f5780d2d7eeb7f1f94a624e0535bdb22;hp=a34d88b9603f720114f877c1282ccc4cc56695bd;hpb=a024e27494af5e9273c18b77d5ad73b6d20223e2;p=tpg%2Fopendispense2.git

diff --git a/src/server/handler_coke.c b/src/server/handler_coke.c
index a34d88b..79d0a46 100644
--- a/src/server/handler_coke.c
+++ b/src/server/handler_coke.c
@@ -21,7 +21,7 @@
 #include <pthread.h>
 
 #define READ_TIMEOUT	2	// 2 seconds for ReadChar
-#define TRACE_COKE	0
+#define TRACE_COKE	1
 
 #if TRACE_COKE
 # define TRACE(v...) do{printf("%s: ",__func__);printf(v);}while(0)
@@ -53,13 +53,14 @@ char	*gsCoke_SerialPort = "/dev/ttyS0";
 regex_t	gCoke_StatusRegex;
  int	gaCoke_CachedStatus[7];
 pthread_mutex_t	gCoke_Mutex = PTHREAD_MUTEX_INITIALIZER;
+time_t	gtCoke_LastDispenseTime;
 
 // == CODE ===
 int Coke_InitHandler()
 {
 	CompileRegex(&gCoke_StatusRegex, "^slot\\s+([0-9]+)\\s+([^:]+):([a-zA-Z]+)\\s*", REG_EXTENDED);
 	
-	printf("connecting to coke machine...\n");
+	printf("Connecting to coke machine on '%s'\n", gsCoke_SerialPort);
 	
 	giCoke_SerialFD = InitSerial(gsCoke_SerialPort, 9600);
 	if( giCoke_SerialFD == -1 ) {
@@ -89,6 +90,8 @@ int Coke_InitHandler()
 			
 			Coke_int_UpdateSlotStatuses();
 		}
+		else
+			fprintf(stderr, "Coke machine timed out.\n");
 	}
 	
 	AddPeriodicFunction(Coke_int_UpdateSlotStatuses);
@@ -153,7 +156,8 @@ void Coke_int_UpdateSlotStatuses(void)
 	
 	for( i = 0; i <= 6; i ++ )
 	{
-		len = ReadLine(sizeof tmp, tmp);
+		// Read until non-blank line
+		while( (len = ReadLine(sizeof tmp, tmp)) == 0 )	;
 		if( len == -1 ) {
 			TRACE("Read failed on slot %i\n", i);
 			goto ret;	// I give up :(
@@ -199,6 +203,14 @@ int Coke_DoDispense(int UNUSED(User), int Item)
 	// Can't dispense if the machine is not connected
 	if( giCoke_SerialFD == -1 )
 		return -2;
+
+	// Make sure there are not two dispenses within n seconds
+	if( time(NULL) - gtCoke_LastDispenseTime < 10 )
+	{
+		printf("Wait %li seconds?\n", 10 - (time(NULL) - gtCoke_LastDispenseTime));
+		sleep( 10 - (time(NULL) - gtCoke_LastDispenseTime) );
+		printf("wait done\n");
+	}
 	
 	// LOCK
 	pthread_mutex_lock(&gCoke_Mutex);
@@ -206,11 +218,6 @@ int Coke_DoDispense(int UNUSED(User), int Item)
 	TRACE("flushing input\n");
 	
 
-	{
-		char buf[512];
-		while( ReadLine(512, buf) != -1 );
-	}
-		
 	// Wait for prompt
 	ret = 0;
 	while( WaitForColon() && ret < 3 )
@@ -262,6 +269,7 @@ int Coke_DoDispense(int UNUSED(User), int Item)
 	TRACE("Updating slot status\n");
 	
 	// Update status
+	WaitForColon();
 	Writef("s%i\r\n", Item);
 	len = ReadLine(sizeof tmp, tmp);
 	if(len == -1)	gaCoke_CachedStatus[Item] = -1;
@@ -270,6 +278,8 @@ int Coke_DoDispense(int UNUSED(User), int Item)
 		char buf[512];
 		read(giCoke_SerialFD, buf, 512);	// Flush
 	}
+
+	gtCoke_LastDispenseTime = time(NULL);
 	
 	// Release and return
 	pthread_mutex_unlock(&gCoke_Mutex);