SX1231 - Added fixes for old silicon revisions

src/modules/SX1231.cpp

@@ -80,5 +80,20 @@ uint8_t SX1231::begin(float freq = 434.0, float br = 48.0, float rxBw = 125.0, f
     return(state);
   }
   
+  // SX1231 V2a only
+  if(_chipRevision == SX1231_CHIP_REVISION_2_A) {
+    // modify default OOK threshold value
+    state = _mod->SPIsetRegValue(SX1231_REG_TEST_OOK, SX1231_OOK_DELTA_THRESHOLHD);
+    if(state != ERR_NONE) {
+      return(state);
+    }
+    
+    // enable OCP with 95 mA limit
+    state = _mod->SPIsetRegValue(RF69_REG_OCP, SX1231_OOK_DELTA_THRESHOLHD, RF69_OCP_ON | RF69_OCP_TRIM, 4, 0);
+    if(state != ERR_NONE) {
+      return(state);
+    }
+  }
+  
   return(ERR_NONE);
 }

src/modules/SX1231.h

@@ -9,6 +9,12 @@
 #define SX1231_CHIP_REVISION_2_B                      0x22
 #define SX1231_CHIP_REVISION_2_C                      0x23
 
+//SX1231 specific register map
+#define SX1231_REG_TEST_OOK                           0x6E
+
+//SX1231_REG_TEST_OOK
+#define SX1231_OOK_DELTA_THRESHOLHD                   0x0C
+
 class SX1231: public RF69  {
   public:
     // constructor