pbio/sys/status: Add setter for slot.

Author: laurensvalk

lib/pbio/include/pbsys/status.h

@@ -22,6 +22,7 @@ bool pbsys_status_test_debounce(pbio_pybricks_status_flags_t status, bool state,
 uint32_t pbsys_status_get_flags(void);
 uint32_t pbsys_status_get_status_report(uint8_t *buf);
 void pbsys_status_increment_selected_slot(bool increment);
+void pbsys_status_set_selected_slot(uint8_t slot);
 pbio_pybricks_user_program_id_t pbsys_status_get_selected_slot(void);
 
 #endif // _PBSYS_STATUS_H_

lib/pbio/sys/status.c

@@ -98,6 +98,24 @@ void pbsys_status_increment_selected_slot(bool increment) {
     #endif
 }
 
+/**
+ * Sets the currently active slot if it is valid.
+ *
+ * @param [in]  slot   Slot id to set.
+ */
+void pbsys_status_set_selected_slot(uint8_t slot) {
+    #if PBSYS_CONFIG_HMI_NUM_SLOTS
+    if (pbsys_status_test(PBIO_PYBRICKS_STATUS_FILE_IO_IN_PROGRESS)) {
+        return;
+    }
+
+    if (slot < PBSYS_CONFIG_HMI_NUM_SLOTS) {
+        pbsys_status.slot = slot;
+        pbsys_status_update_emit();
+    }
+    #endif
+}
+
 /**
  * Gets the currently selected program slot.
  *