fix: Fettling - More mocking exploration

Author: milesburton

.arduino-ci.cpp

@@ -3,17 +3,4 @@
 // Mock OneWire GPIO functions
 uint8_t digitalPinToBitMask(uint8_t pin) { return 1 << (pin % 8); }
 void* digitalPinToPort(uint8_t pin) { static uint8_t dummy; return &dummy; }
-void* portModeRegister(void* port) { return port; }
-
-// Mock CRC16 implementation
-uint16_t _crc16_update(uint16_t crc, uint8_t data) {
-    uint8_t i;
-    crc ^= data;
-    for (i = 0; i < 8; ++i) {
-        if (crc & 1)
-            crc = (crc >> 1) ^ 0xA001;
-        else
-            crc = (crc >> 1);
-    }
-    return crc;
-}
+void* portModeRegister(void* port) { return port; }

.arduino-ci.yml

@@ -10,7 +10,5 @@ unittest:
     - uno
   libraries:
     - "OneWire"
-  mocks:
-    - crc16.h
-    - OneWire_direct_gpio.h
-    - pins_arduino.h
+  mock_cfiles:
+    - .arduino-ci/crc16.h