/modules/nrfx/mdk/nrf52840.svd"
       debug_start_from_entry_point_symbol="No"
diff --git a/pca10100/s140/config/sdk_config.h b/pca10100/s140/config/sdk_config.h
index ed6724a..301aa86 100644
--- a/pca10100/s140/config/sdk_config.h
+++ b/pca10100/s140/config/sdk_config.h
@@ -5719,7 +5719,7 @@
 // <e> TWI_ENABLED - nrf_drv_twi - TWI/TWIM peripheral driver - legacy layer
 //==========================================================
 #ifndef TWI_ENABLED
-#define TWI_ENABLED 0
+#define TWI_ENABLED 1
 #endif
 // <o> TWI_DEFAULT_CONFIG_FREQUENCY  - Frequency
  
diff --git a/pca10100/s140/ses/ble_app_uart_pca10100_s140.emProject b/pca10100/s140/ses/ble_app_uart_pca10100_s140.emProject
index 9e41783..6b0d85a 100644
--- a/pca10100/s140/ses/ble_app_uart_pca10100_s140.emProject
+++ b/pca10100/s140/ses/ble_app_uart_pca10100_s140.emProject
@@ -70,6 +70,10 @@
       <file file_name="../../../../../../components/libraries/strerror/nrf_strerror.c" />
       <file file_name="../../../../../../components/libraries/uart/retarget.c" />
     </folder>
+    <folder Name="cus_ext_drv">
+      <file file_name="heartrate_cus.c" />
+      <file file_name="accel5_cus.c" />
+    </folder>
     <folder Name="None">
       <file file_name="../../../../../../modules/nrfx/mdk/ses_startup_nrf52833.s" />
       <file file_name="../../../../../../modules/nrfx/mdk/ses_startup_nrf_common.s" />
