Ny structure. Start of the "main" branch

Cards/EaserCAT-2000/Firmware/lib/soes/esc_eep.h

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+/*
+ * Licensed under the GNU General Public License version 2 with exceptions. See
+ * LICENSE file in the project root for full license information
+ */
+
+/** \file
+ * \brief
+ * Headerfile for esc_eep.c
+ */
+
+#ifndef __esc_eep__
+#define __esc_eep__
+
+#include <cc.h>
+#include "esc.h"
+
+/* EEPROM commands */
+#define EEP_CMD_IDLE        0x0
+#define EEP_CMD_READ        0x1
+#define EEP_CMD_WRITE       0x2
+#define EEP_CMD_RELOAD      0x3
+
+/* read/write size */
+#define EEP_READ_SIZE       8
+#define EEP_WRITE_SIZE      2
+
+/* CONSTAT register content */
+typedef struct CC_PACKED
+{
+   union {
+     uint16_t reg;
+     struct {
+        uint8_t wrEnable:1;
+        uint8_t reserved:4;
+        uint8_t eeEmulated:1;
+        uint8_t eightByteRead:1;
+        uint8_t twoByteAddr:1;
+
+        uint8_t cmdReg:3;
+        uint8_t csumErr:1;
+        uint8_t eeLoading:1;
+        uint8_t ackErr:1;
+        uint8_t wrErr:1;
+        uint8_t busy:1;
+      } bits;
+   } contstat;
+
+   uint32_t addr;
+} eep_stat_t;
+
+/**
+ * ECAT EEPROM configuration area data structure
+ */
+typedef union eep_config
+{
+  struct
+  {
+    uint16_t pdi_control;
+    uint16_t pdi_configuration;
+    uint16_t sync_impulse_len;
+    uint16_t pdi_configuration2;
+    uint16_t configured_station_alias;
+    uint8_t  reserved[4];
+    uint16_t checksum;
+  };
+  uint32_t dword[4]; /**< Four 32 bit double word equivalent to 8 16 bit configuration area word. */
+}eep_config_t;
+
+/* periodic task */
+void EEP_process (void);
+
+/* From hardware file */
+void EEP_init (void);
+int8_t EEP_read (uint32_t addr, uint8_t *data, uint16_t size);
+int8_t EEP_write (uint32_t addr, uint8_t *data, uint16_t size);
+
+#endif