@@ -195,6 +195,7 @@ SYS_INIT(maybe_flash_bootloader, POST_KERNEL, CONFIG_FILE_SYSTEM_INIT_PRIORITY);
195195
196196int analog_reference (uint8_t reference ) {
197197 uint8_t init_status ;
198+
198199 /* VREF+ is connected to VDDA by default */
199200 const struct gpio_dt_spec spec =
200201 GPIO_DT_SPEC_GET_BY_IDX (DT_PATH (zephyr_user ), analog_switch_gpios , 0 );
@@ -210,7 +211,7 @@ int analog_reference(uint8_t reference) {
210211 if (reference == AR_DEFAULT ) {
211212 /* VREF+ is connected to VDDA */
212213 gpio_pin_set_dt (& spec , 0 );
213- return ;
214+ return 0 ;
214215 }
215216
216217 gpio_pin_set_dt (& spec , 1 );
@@ -236,7 +237,7 @@ int analog_reference(uint8_t reference) {
236237 }
237238
238239 HAL_SYSCFG_VREFBUF_VoltageScalingConfig (voltageScaling );
239- HAL_SYSCFG_EnableVREFBUF ();
240+ init_status = HAL_SYSCFG_EnableVREFBUF ();
240241 HAL_SYSCFG_VREFBUF_HighImpedanceConfig (SYSCFG_VREFBUF_HIGH_IMPEDANCE_DISABLE );
241242
242243 __ASSERT (init_status == HAL_OK , "ADC Conversion value may be incorrect" );
@@ -248,7 +249,7 @@ EXPORT_SYMBOL(analog_reference);
248249
249250int disable_vrefbuf () {
250251 // This is the safe HW configuration
251- analog_reference (AR_DEFAULT );
252+ return analog_reference (AR_DEFAULT );
252253}
253254
254255SYS_INIT (disable_vrefbuf , POST_KERNEL , 0 );
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