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-rw-r--r--stmhal/adc.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/stmhal/adc.h b/stmhal/adc.h
index ebaccbee3d..6ec5584643 100644
--- a/stmhal/adc.h
+++ b/stmhal/adc.h
@@ -23,6 +23,10 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
+#ifndef MICROPY_INCLUDED_STMHAL_ADC_H
+#define MICROPY_INCLUDED_STMHAL_ADC_H
extern const mp_obj_type_t pyb_adc_type;
extern const mp_obj_type_t pyb_adc_all_type;
+
+#endif // MICROPY_INCLUDED_STMHAL_ADC_H