From d27e4cb4ec0e00228eaa66732ab35fe0a4aa9d6d Mon Sep 17 00:00:00 2001
From: Federico Briata <federico@briata.org>
Date: Fri, 15 Nov 2024 19:31:13 +0100
Subject: [PATCH] RF12.cpp - make external interrupt configurable

---
 RF12.cpp | 23 ++++++++++++++++-------
 1 file changed, 16 insertions(+), 7 deletions(-)

diff --git a/RF12.cpp b/RF12.cpp
index 4996a827..6c3bb2a2 100644
--- a/RF12.cpp
+++ b/RF12.cpp
@@ -53,6 +53,7 @@
 #if defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1280__)
 
 #define RFM_IRQ     2
+#define RFM_INT     INT0
 #define SS_DDR      DDRB
 #define SS_PORT     PORTB
 #define SS_BIT      0
@@ -65,6 +66,7 @@
 #elif defined(__AVR_ATmega644P__)
 
 #define RFM_IRQ     10
+#define RFM_INT     INT0
 #define SS_DDR      DDRB
 #define SS_PORT     PORTB
 #define SS_BIT      4
@@ -77,6 +79,7 @@
 #elif defined(__AVR_ATtiny84__) || defined(__AVR_ATtiny44__)
 
 #define RFM_IRQ     2
+#define RFM_INT     INT0
 #define SS_DDR      DDRB
 #define SS_PORT     PORTB
 #define SS_BIT      1
@@ -86,12 +89,17 @@
 #define SPI_MOSI    5     // PA5, pin 8
 #define SPI_SCK     6     // PA4, pin 9
 
-#elif defined(__AVR_ATmega32U4__) //Arduino Leonardo, YUN
+#elif defined(__AVR_ATmega32U4__) //Arduino Leonardo
 
-#define RFM_IRQ     2      // PD1, pin 19, INT1, Digital2
+#define RFM_IRQ     0       // PD0, pin 19, INT0, Digital3
+#define RFM_INT     INT0
+//#define RFM_IRQ     2       // PD1, pin 19, INT1, Digital2
+//#define RFM_INT     INT1
+//#define RFM_IRQ     7     // PE6, INT4, Digital7 - Adafruit Feather M0 RFM96
+//#define RFM_INT     INT4
 #define SS_DDR      DDRB
 #define SS_PORT     PORTB
-#define SS_BIT      6       // Dig10, PB6
+#define SS_BIT      6	    // PB6, pin 30, Digital10
 
 #define SPI_SS      10    // PB6, pin 30, Digital10
 #define SPI_MISO    14    // PB3, pin 11, Digital14
@@ -102,6 +110,7 @@
 
 // ATmega168, ATmega328, etc.
 #define RFM_IRQ     2     // 2=JeeNode, 18=JeeNode pin change
+#define RFM_INT     INT0
 //#define RFM_IRQ       1     // PCINT1=JeeNode Block pin change
 #define SS_DDR      DDRB
 #define SS_PORT     PORTB
@@ -294,7 +303,7 @@ uint16_t rf12_control(uint16_t cmd) {
         bitClear(PCICR, PCIE2);
     #endif
 #else
-    bitClear(EIMSK, INT1);
+    bitClear(EIMSK, RFM_INT);
 #endif
    uint16_t r = rf12_xferSlow(cmd);
 #if PINCHG_IRQ
@@ -306,13 +315,13 @@ uint16_t rf12_control(uint16_t cmd) {
         bitSet(PCICR, PCIE2);
     #endif
 #else
-    bitSet(EIMSK, INT1);
+    bitSet(EIMSK, RFM_INT);
 #endif
 #else
     // ATtiny
-    bitClear(GIMSK, INT0);
+    bitClear(GIMSK, RFM_INT);
     uint16_t r = rf12_xferSlow(cmd);
-    bitSet(GIMSK, INT0);
+    bitSet(GIMSK, RFM_INT);
 #endif
     return r;
 }