diff --git a/tests/unit/modules/motion/CMakeLists.txt b/tests/unit/modules/motion/CMakeLists.txt
index b7d93fc..ce17dff 100644
--- a/tests/unit/modules/motion/CMakeLists.txt
+++ b/tests/unit/modules/motion/CMakeLists.txt
@@ -1,9 +1,13 @@
 # common include and source directories
 set(include_common ${CMAKE_SOURCE_DIR}/src/modules ${CMAKE_SOURCE_DIR}/src/hal)
 set(source_common
-    ${CMAKE_SOURCE_DIR}/src/modules/motion.cpp ${CMAKE_SOURCE_DIR}/src/modules/speed_table.cpp
-    ${CMAKE_SOURCE_DIR}/src/modules/pulse_gen.cpp ${MODULES_STUBS_DIR}/stub_gpio.cpp
-    ${MODULES_STUBS_DIR}/stub_shr16.cpp ${MODULES_STUBS_DIR}/stub_tmc2130.cpp
+    ${CMAKE_SOURCE_DIR}/src/modules/motion.cpp
+    ${CMAKE_SOURCE_DIR}/src/modules/speed_table.cpp
+    ${CMAKE_SOURCE_DIR}/src/modules/pulse_gen.cpp
+    ${MODULES_STUBS_DIR}/stub_gpio.cpp
+    ${CMAKE_SOURCE_DIR}/src/hal/avr/tmc2130.cpp
+    ${MODULES_STUBS_DIR}/stub_shr16.cpp
+    ${MODULES_STUBS_DIR}/stub_spi.cpp
     )
 
 # general motion tests
diff --git a/tests/unit/modules/stubs/stub_spi.cpp b/tests/unit/modules/stubs/stub_spi.cpp
new file mode 100644
index 0000000..030338b
--- /dev/null
+++ b/tests/unit/modules/stubs/stub_spi.cpp
@@ -0,0 +1,14 @@
+#include "spi.h"
+
+namespace hal {
+namespace spi {
+
+void Init(SPI_TypeDef *const hspi, SPI_InitTypeDef *const conf) {
+}
+
+uint8_t TxRx(SPI_TypeDef *hspi, uint8_t val) {
+    return 0;
+}
+
+} // namespace spi
+} // namespace hal