Fix battery level code in adafruit_ble.cpp (#6648)

[jackhill/qmk/firmware.git] / drivers / avr / analog.h

diff --git a/drivers/avr/analog.h b/drivers/avr/analog.h
index 32452a1..1b773d8 100644 (file)
--- a/drivers/avr/analog.h
+++ b/drivers/avr/analog.h
@@ -19,9 +19,15 @@
 
 #include <stdint.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 void    analogReference(uint8_t mode);
 int16_t analogRead(uint8_t pin);
 int16_t adc_read(uint8_t mux);
+#ifdef __cplusplus
+}
+#endif
 
 #define ADC_REF_POWER (1 << REFS0)
 #define ADC_REF_INTERNAL ((1 << REFS1) | (1 << REFS0))