diff --git a/driver b/driver
index 42a63d0f..60dc30bc 160000
--- a/driver
+++ b/driver
@@ -1 +1 @@
-Subproject commit 42a63d0fda862aa673b210b20bf40402efcf655b
+Subproject commit 60dc30bc1c3b1bf934fa0340115aced56b0fce7d
diff --git a/init/rev3/config/Src/stm32h7xx_it.c b/init/rev3/config/Src/stm32h7xx_it.c
index 8e8df7d3..85b3a787 100644
--- a/init/rev3/config/Src/stm32h7xx_it.c
+++ b/init/rev3/config/Src/stm32h7xx_it.c
@@ -20,6 +20,9 @@
 /* Includes ------------------------------------------------------------------*/
 #include "main.h"
 #include "stm32h7xx_it.h"
+#include "baro.h"
+#include "sdr_pin_defines_A0010.h"
+
 /* Private includes ----------------------------------------------------------*/
 /* USER CODE BEGIN Includes */
 /* USER CODE END Includes */
@@ -213,5 +216,26 @@ void OTG_HS_IRQHandler(void)
 }
 
 /* USER CODE BEGIN 1 */
+#if 0 // This is Proof-of-Concept Code, disabled to prevent breaking builds
+void HAL_SPI_TxCpltCallback( SPI_HandleTypeDef *hspi ) {
+    if ( hspi == &( BARO_SPI ) ) {
+        baro_IT_handler(BARO_EVENT_TX_CPLT);
+    }
+}
 
+void HAL_SPI_TxRxCpltCallback( SPI_HandleTypeDef *hspi ) {
+    if ( hspi == &( BARO_SPI ) ) {
+        baro_IT_handler(BARO_EVENT_TXRX_CPLT);
+    }
+}
+
+HAL_TIM_OC_DelayElapsedCallback( TIM_HandleTypeDef *htim ) {
+    // TODO add MICRO_TIM and BARO_TIM_CHANNEL macros to rev3 pin defines
+    if ( htim->Instance == MICRO_TIM ) {
+        if( htim->Channel == BARO_TIM_CHANNEL ) {
+            baro_IT_handler(BARO_EVENT_DELAY_ELAPSED);
+        }
+    }
+}
+#endif
 /* USER CODE END 1 */
diff --git a/mod b/mod
index 690f370d..95482a45 160000
--- a/mod
+++ b/mod
@@ -1 +1 @@
-Subproject commit 690f370d123ae97ce51bcff911b79703235791b8
+Subproject commit 95482a458fcd84dd52cbb0a70a7999c93e145feb