Debug new ethercat code.

Tested with beckhoff blocks connected.
(Still only one ethercat bus, multiple busses remains untested.)

controller/ec/block_ec.c

@@ -38,7 +38,7 @@ struct controller_block_private {
 	struct controller_bus *bus;
 };
 
-static void calculate(struct controller_block *ec)
+static void ec_calculate(struct controller_block *ec)
 {
 	struct controller_bus *bus = ec->private->bus;
 	
@@ -54,7 +54,7 @@ static void calculate(struct controller_block *ec)
 		ec->private->operational = true;
 }
 
-static void calculate_tx(struct controller_block *ec)
+static void ec_calculate_tx(struct controller_block *ec)
 {
 	ec_tx_pdo(ec->private->ec);
 }
@@ -138,6 +138,7 @@ static struct controller_block * block_ec_create(char *name, int argc, va_list a
 	ec_tx = controller_block_alloc("ec_tx", name_tx, 0);
 	if (!ec_tx)
 		goto err_ec_tx;
+	ec_tx->private = ec->private;
 
 	if (controller_block_outterm_list_init(ec, outterms))
 		goto err_outputs;	
@@ -161,8 +162,8 @@ static struct controller_block * block_ec_create(char *name, int argc, va_list a
 	ec->private->pdo_data = true;
 	ec->private->operational = false;
 
-	ec->calculate = calculate;
-	ec_tx->calculate = calculate_tx;
+	ec->calculate = ec_calculate;
+	ec_tx->calculate = ec_calculate_tx;
 
 	if (controller_block_add(ec))
 		goto err_add;