From 6b4666f8cf93121af00014351a659216824214e1 Mon Sep 17 00:00:00 2001
From: Damien George <damien.p.george@gmail.com>
Date: Mon, 23 Sep 2019 23:45:07 +1000
Subject: [PATCH] stm32/can: Guard header file by MICROPY_HW_ENABLE_CAN.

Because not all MCU series have a CAN peripheral.
---
 ports/stm32/can.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ports/stm32/can.h b/ports/stm32/can.h
index 085070b601..bb26c0b7e2 100644
--- a/ports/stm32/can.h
+++ b/ports/stm32/can.h
@@ -28,6 +28,8 @@
 
 #include "py/obj.h"
 
+#if MICROPY_HW_ENABLE_CAN
+
 #define PYB_CAN_1 (1)
 #define PYB_CAN_2 (2)
 #define PYB_CAN_3 (3)
@@ -86,4 +88,6 @@ int can_receive(CAN_HandleTypeDef *can, int fifo, CanRxMsgTypeDef *msg, uint8_t
 HAL_StatusTypeDef CAN_Transmit(CAN_HandleTypeDef *hcan, uint32_t Timeout);
 void pyb_can_handle_callback(pyb_can_obj_t *self, uint fifo_id, mp_obj_t callback, mp_obj_t irq_reason);
 
+#endif // MICROPY_HW_ENABLE_CAN
+
 #endif // MICROPY_INCLUDED_STM32_CAN_H