restructuring

F0:F030,F042,F072/Chiller/mainloop.h

@@ -0,0 +1,55 @@
+/*
+ * This file is part of the Chiller project.
+ * Copyright 2019 Edward V. Emelianov <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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+#include "stm32f0.h"
+
+// temperature setpoint
+extern int16_t Tset;
+
+// temperatures of NTC
+extern int16_t NTCval[4];
+// meaning of each array member: in/out, heater and air
+#define TI_IDX              (0)
+#define TO_IDX              (1)
+#define TH_IDX              (2)
+#define TA_IDX              (3)
+#define INPUT_TEMPERATURE   NTCval[TI_IDX]
+#define OUTPUT_TEMPERATURE  NTCval[TO_IDX]
+#define HEATER_TEMPERATURE  NTCval[TH_IDX]
+#define AIR_TEMPERATURE     NTCval[TA_IDX]
+
+
+/* status bits */
+// ==1 if no changes
+#define ST_OK               (1<<0)
+// (ST_OK=0) == 1 if moving faster (or hotter), 0 if slower (or cooler)
+#define ST_FASTER           (1<<1)
+// turn OFF
+#define ST_OFF              (1<<2)
+// critical error
+#define ST_CRITICAL         (1<<7)
+
+/* chiller status codes */
+typedef struct{
+    uint8_t common_state; // common state != ST_OK if some other states changed
+    uint8_t heater_state;
+    uint8_t cooler_state;
+    uint8_t pump_state;
+} chiller_state;
+
+chiller_state *mainloop();
+