DigitalIO driver with dynamic channel count

lib/GPIO/TCA9554PWR_Driver.cpp

@@ -39,7 +39,7 @@ namespace drivers
     uint8_t currState(0);
     uint8_t newState(0);
 
-    if (ch < OUT_PIN1 || ch > OUT_PIN8)
+    if (ch < DO1 || ch > DO8)
     {
       LOG_ERROR("Invalid write to output channel: [%d]", ch);
       return false;
@@ -64,7 +64,7 @@ namespace drivers
   const bool TCA9554PWR::readOut(const uint8_t ch)
   {
     uint8_t currState(0);
-    if (ch < OUT_PIN1 || ch > OUT_PIN8)
+    if (ch < DO1 || ch > DO8)
     {
       LOG_ERROR("Invalid read to output channel: [%d]", ch);
       return false;

lib/GPIO/TCA9554PWR_Driver.h

@@ -21,18 +21,18 @@ namespace drivers
     {
 
     public:
-        enum
+        typedef enum
         {
-            OUT_PIN1,
-            OUT_PIN2,
-            OUT_PIN3,
-            OUT_PIN4,
-            OUT_PIN5,
-            OUT_PIN6,
-            OUT_PIN7,
-            OUT_PIN8,
-            OUT_PIN_MAX
-        };
+            DO1,
+            DO2,
+            DO3,
+            DO4,
+            DO5,
+            DO6,
+            DO7,
+            DO8,
+            DO_MAX
+        } channel_t;
 
         TCA9554PWR(I2C &i2c, const uint8_t address);
         ~TCA9554PWR();