diff --git a/src/test/unit/baro_bmp280_unittest.cc b/src/test/unit/baro_bmp280_unittest.cc
index 3ab6dd6fb2..482a398a61 100644
--- a/src/test/unit/baro_bmp280_unittest.cc
+++ b/src/test/unit/baro_bmp280_unittest.cc
@@ -148,4 +148,28 @@ bool i2cRead(uint8_t, uint8_t, uint8_t, uint8_t) {
     return true;
 }
 
+bool spiWriteRegister(uint8_t, uint8_t, uint8_t) {
+    return true;
+}
+
+bool spiReadRegisterBuffer(uint8_t, uint8_t, uint8_t, uint8_t) {
+    return true;
+}
+
+void spiSetDivisor() {
+}
+
+void IOConfigGPIO() {
+}
+
+void IOHi() {
+}
+
+void IOInit() {
+}
+
+void IORelease() {
+}
+
+
 }
diff --git a/src/test/unit/baro_ms5611_unittest.cc b/src/test/unit/baro_ms5611_unittest.cc
index ede91fced5..8826409743 100644
--- a/src/test/unit/baro_ms5611_unittest.cc
+++ b/src/test/unit/baro_ms5611_unittest.cc
@@ -149,4 +149,28 @@ bool i2cRead(uint8_t, uint8_t, uint8_t, uint8_t) {
     return true;
 }
 
+
+bool spiWriteRegister(uint8_t, uint8_t, uint8_t) {
+    return true;
+}
+
+bool spiReadRegisterBuffer(uint8_t, uint8_t, uint8_t, uint8_t) {
+    return true;
+}
+
+void spiSetDivisor() {
+}
+
+void IOConfigGPIO() {
+}
+
+void IOHi() {
+}
+
+void IOInit() {
+}
+
+void IORelease() {
+}
+
 }