port fix for issue #15

src/main.c

@@ -101,8 +101,8 @@ int main(void)
 		struct gs_host_frame *frame = queue_pop_front(q_from_host);
 		if (frame != 0) { // send can message from host
 			if (can_send(&hCAN, frame)) {
-			        // Echo sent frame back to host
-			        frame->timestamp_us = timer_get();
+				// Echo sent frame back to host
+				frame->timestamp_us = timer_get();
 				send_to_host_or_enqueue(frame);
 
 				led_indicate_trx(&hLED, led_2);
@@ -117,23 +117,26 @@ int main(void)
 
 		if (can_is_rx_pending(&hCAN)) {
 			struct gs_host_frame *frame = queue_pop_front(q_frame_pool);
-			if ((frame != 0) && can_receive(&hCAN, frame)) {
-             			received_count++;
+			if (frame != 0)
+			{
+				if (can_receive(&hCAN, frame)) {
+					received_count++;
 
-				frame->timestamp_us = timer_get();
-				frame->echo_id = 0xFFFFFFFF; // not a echo frame
-				frame->channel = 0;
-				frame->flags = 0;
-				frame->reserved = 0;
+					frame->timestamp_us = timer_get();
+					frame->echo_id = 0xFFFFFFFF; // not a echo frame
+					frame->channel = 0;
+					frame->flags = 0;
+					frame->reserved = 0;
 
-				send_to_host_or_enqueue(frame);
-
-				led_indicate_trx(&hLED, led_1);
+					send_to_host_or_enqueue(frame);
 
-			} else {
-				queue_push_back(q_frame_pool, frame);
+					led_indicate_trx(&hLED, led_1);
+				}
+				else
+				{
+					queue_push_back(q_frame_pool, frame);
+				}
 			}
-
 		}
 
 		uint32_t can_err = can_get_error_status(&hCAN);
@@ -227,15 +230,15 @@ bool send_to_host_or_enqueue(struct gs_host_frame *frame)
 
 void send_to_host()
 {
-        struct gs_host_frame *frame = queue_pop_front(q_to_host);
+	struct gs_host_frame *frame = queue_pop_front(q_to_host);
 
 	if(!frame)
 	  return;
 
 	if (USBD_GS_CAN_SendFrame(&hUSB, frame) == USBD_OK) {
-	        queue_push_back(q_frame_pool, frame);
+		queue_push_back(q_frame_pool, frame);
 	} else {
-	        queue_push_front(q_to_host, frame);
+		queue_push_front(q_to_host, frame);
 	}
 }