diff --git a/framework/resources.c b/framework/resources.c
index 2fe7748..96c2181 100644
--- a/framework/resources.c
+++ b/framework/resources.c
@@ -14,24 +14,37 @@ static ResourceMap global_rscmap;
 
 // here are the resource names for better debugging
 
-// this list doesn't include GPIO names, they can be easily generated
+// this list doesn't include GPIO and EXTI names, they can be easily generated
 const char *const rsc_names[] = {
 #define X(res_name) #res_name,
     XX_RESOURCES
 #undef X
 };
 
+// Check that EXTI have higher values than GPIOs in the enum
+// (determines the logic in the name generation code below)
+COMPILER_ASSERT(R_EXTI0 > R_PA0);
+
 /** Get rsc name */
 const char * rsc_get_name(Resource rsc)
 {
     assert_param(rsc < RESOURCE_COUNT);
 
-    static char gpionamebuf[5];
+    static char gpionamebuf[8];
+    // we assume the returned value is not stored anywhere
+    // and is directly used in a sprintf call, hence a static buffer is OK to use
+
+    if (rsc >= R_EXTI0) {
+        uint8_t index = rsc - R_EXTI0;
+        SNPRINTF(gpionamebuf, 8, "EXTI%d", index);
+        return gpionamebuf;
+    }
+
     if (rsc >= R_PA0) {
         // we assume the returned value is not stored anywhere
         // and is directly used in a sprintf call.
         uint8_t index = rsc - R_PA0;
-        SNPRINTF(gpionamebuf, 5, "P%c%d", 'A'+(index/16), index%16);
+        SNPRINTF(gpionamebuf, 8, "P%c%d", 'A'+(index/16), index%16);
         return gpionamebuf;
     }
 
diff --git a/framework/rsc_enum.h b/framework/rsc_enum.h
index 6854825..db312c9 100644
--- a/framework/rsc_enum.h
+++ b/framework/rsc_enum.h
@@ -45,29 +45,10 @@
     X(PF0) X(PF1) X(PF2) X(PF3) X(PF4) X(PF5) X(PF6) X(PF7) \
     X(PF8) X(PF9) X(PF10) X(PF11) X(PF12) X(PF13) X(PF14) X(PF15) \
 
-// GPIOs are allocated whenever the pin is needed
-//  (e.g. when used for SPI, the R_SPI resource as well as the corresponding R_GPIO resources must be claimed)
+#define XX_RESOURCES_EXTI \
+    X(EXTI0) X(EXTI1) X(EXTI2) X(EXTI3) X(EXTI4) X(EXTI5) X(EXTI6) X(EXTI7) \
+    X(EXTI8) X(EXTI9) X(EXTI10) X(EXTI11) X(EXTI12) X(EXTI13) X(EXTI14) X(EXTI15)
 
-// Peripheral blocks (IPs) - not all chips have all blocks, usually the 1 and 2 are present as a minimum, if any.
-//  It doesn't really make sense to expose multiple instances of buses that support addressing
-
-// ADCs - some more advanced chips support differential input mode on some (not all!) inputs
-//  Usually only one or two instances are present
-
-// DAC - often only one is present, or none.
-
-// UARTs
-//  - 1 and 2 are present universally, 2 is connected to VCOM on Nucleo/Discovery boards, good for debug messages
-//  4 and 5 don't support synchronous mode.
-
-// Timers
-//  - some support quadrature input, probably all support external clock / gating / clock-out/PWM generation
-//  Not all chips have all timers and not all timers are equal.
-
-// DMA - Direct memory access lines
-
-// The resource registry will be pre-loaded with platform-specific config of which blocks are available - the rest will be "pre-claimed"
-// (i.e. unavailable to functional modules)
 
 typedef enum hw_resource Resource;
 
@@ -75,6 +56,7 @@ enum hw_resource {
 #define X(res_name) R_##res_name,
     XX_RESOURCES
     XX_RESOURCES_GPIO
+    XX_RESOURCES_EXTI
 #undef X
     R_NONE,
     RESOURCE_COUNT = R_NONE,