add copy of TSYS

F0:F030,F042,F072/TSYS_controller/can.h

@@ -0,0 +1,73 @@
+/*
+ *                                                                                                  geany_encoding=koi8-r
+ * can.h
+ *
+ * Copyright 2018 Edward V. Emelianov <eddy@sao.ru, edward.emelianoff@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ *
+ */
+#pragma once
+#ifndef __CAN_H__
+#define __CAN_H__
+
+#include "hardware.h"
+
+// identifier mask
+#define CAN_ID_MASK     ((uint16_t)0x7F0)
+// prefix of identifiers
+#define CAN_ID_PREFIX   ((uint16_t)0xAAA)
+// this is master - Controller_address==0
+#define MASTER_ID       (CAN_ID_PREFIX & CAN_ID_MASK)
+// broadcasting to every slave
+#define BCAST_ID        ((uint16_t)0x7F7)
+// send dummy message to this ID for testing CAN bus status
+#define NOONE_ID        ((uint16_t)0x7FF)
+
+extern uint16_t curcanspeed;
+extern uint16_t CANID;
+extern int8_t cansniffer;
+
+typedef struct{
+    uint8_t data[8];
+    uint8_t length;
+    uint16_t ID;        // ID of receiver
+} CAN_message;
+
+typedef enum{
+    CAN_NOTMASTER,      // can't send command - not a master
+    CAN_STOP,           // CAN stopped
+    CAN_READY,          // ready to send
+    CAN_BUSY,           // bus is busy
+    CAN_OK,             // all OK?
+    CAN_FIFO_OVERRUN,   // FIFO overrun
+    CAN_ERROR           // no recipients on bus or too many errors
+} CAN_status;
+
+CAN_status CAN_get_status();
+
+void readCANID();
+
+void CAN_setup(uint16_t speed);
+void CAN_listenall();
+void CAN_listenone();
+
+void can_proc();
+CAN_status can_send(uint8_t *msg, uint8_t len, uint16_t target_id);
+
+CAN_message *CAN_messagebuf_pop();
+
+#endif // __CAN_H__