added bus string determination

afsk/telem.c

@@ -247,15 +247,18 @@ int main(int argc, char *argv[]) {
 int test_i2c_bus(int bus)
 {
 	int output = 1;
-	char *busString = "/dev/i2c-3";
+	char *busDev = "/dev/i2c-";
+	char *busString[25];
 	char *busS[5];
+	sprintf(busS, "%d", bus);
+	strcat (busString, busDev);
+	strcat (busString, busS);	
+	printf("Bus Dev String: %s \n", busString);
 	
 	if (access(busString, W_OK | R_OK) >= 0)  {   // Test if I2C Bus 0 is present			
 //	  	printf("bus is present\n\n");	    
     	  	char result[128];		
     	  	char command[50] = "timeout 10 i2cdetect -y ";
-		sprintf(busS, "%d", bus);
-		printf("Bus String: %s \n", busS);
     	 	strcat (command, busS);
 //     	 	printf("Command: %s \n", command);
     	 	FILE *i2cdetect = popen(command, "r");