3 files changed, 24 insertions, 9 deletions
diff --git a/main/config.def.h b/main/config.def.h
index 3d325fe..e9503ed 100644
--- a/main/config.def.h
+++ b/main/config.def.h
@@ -56,11 +56,10 @@
 #endif
 /** \} */
 
-#ifndef CFG_LED_PIN
-//! status LED pin
-#define CFG_LED_PIN CYW43_WL_GPIO_LED_PIN
-#endif
-
+/**
+ * \name I2C configuration
+ * \{
+ */
 #ifndef CFG_SDA_PIN
 //! I^2^C SDA pin
 #define CFG_SDA_PIN 16
@@ -69,4 +68,15 @@
 //! I^2^C SCL pin
 #define CFG_SCL_PIN 17
 #endif
+/** \} */
+
+#ifndef CFG_LED_PIN
+//! status LED pin
+#define CFG_LED_PIN CYW43_WL_GPIO_LED_PIN
+#endif
+
+#ifndef CFG_PB_MOD_MAX
+//! maximum number of simultaniously connected puzzle modules
+#define CFG_PB_MOD_MAX 8
+#endif
 
diff --git a/main/i2c.c b/main/i2c.c
index ccd6b46..612075b 100644
--- a/main/i2c.c
+++ b/main/i2c.c
@@ -9,15 +9,19 @@
 #include "i2c.h"
 #include "pb-mod.h"
 #include "pbdrv.h"
+#include "config.h"
+
+i2c_addr_t modules[CFG_PB_MOD_MAX];
+size_t modules_size = 0;
 
 void bus_task() {
-	vTaskDelay(1000 / portTICK_PERIOD_MS);
-	
 	bus_scan();
 	vTaskDelete(NULL);
 }
 
 void pb_route_cmd_magic_res(pb_msg_t * msg) {
-	printf("got a magic response from 0x%02x!\n", msg->sender);
+	if (modules_size == CFG_PB_MOD_MAX) return;
+	modules[modules_size++] = msg->sender;
+	printf("i2c: registered puzzle module w/ address 0x%02x\n", msg->sender);
 }
 
diff --git a/main/mod.c b/main/mod.c
index b234f97..11a1bb7 100644
--- a/main/mod.c
+++ b/main/mod.c
@@ -1,5 +1,6 @@
+#include "pb.h"
 #include "pb-mod.h"
 
 const char * PB_MOD_NAME = "main controller";
-const i2c_addr_t PB_MOD_ADDR = 0x20;
+const i2c_addr_t PB_MOD_ADDR = PB_ADDR_MOD_MAIN;