X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=firmware%2Fmodbus.h;h=937b8e8d71adb618581cd06f10216583ad281f0d;hb=1d97e30f53c89725c8acf446bac51f295193d41f;hp=4218317c54f627dae421c996f57e04b4c73d2cc1;hpb=86f8e5bfd1c753034b9ca876dac7d18720ab8808;p=openparking.git

diff --git a/firmware/modbus.h b/firmware/modbus.h
old mode 100755
new mode 100644
index 4218317..937b8e8
--- a/firmware/modbus.h
+++ b/firmware/modbus.h
@@ -8,7 +8,22 @@
  * All bugs by Jan "Yenya" Kasprzak <kas@fi.muni.cz> :-)
  */
 
-void modbus_init();
+void modbus_init(uint8_t unit_id);
 void modbus_poll();
 
+typedef enum {
+	MB_OK = 0,
+	MB_ILLEGAL_FUNC = 1,
+	MB_ILLEGAL_ADDR = 2,
+	MB_ILLEGAL_VAL  = 3,
+} mb_exception;
+
+#define MB_HOLD_REGS_BASE	1000
+#define MB_N_HOLD_REGS		40
+#define MB_N_HOLD_REGS_EEPROM	20
+extern uint16_t hold_regs[MB_N_HOLD_REGS];
+#define mb_unit_id	(hold_regs[0])
+
+uint8_t hold_reg_is_valid(uint16_t reg, uint16_t val);
+
 #endif /* MODBUS_H__ */