wg_util.h

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#pragma once
 
#include <stdint.h>
#include "ethercat_hardware/ethercat_com.h"
#include "ethercat_hardware/ethercat_device.h"
 
namespace ethercat_hardware
{
 
// Syncmanger control register 0x804+N*8
struct SyncManControl {
  union {
    uint8_t raw;
    struct {
      uint8_t mode            : 2;
      uint8_t direction       : 2;
      uint8_t ecat_irq_enable : 1;
      uint8_t pdi_irq_enable  : 1;
      uint8_t watchdog_enable : 1;
      uint8_t res1            : 1;
    } __attribute__ ((__packed__));      
  } __attribute__ ((__packed__));
  //static const unsigned BASE_ADDR=0x804;
  //static unsigned base_addr(unsigned num);
  //void print(std::ostream &os=std::cout) const;
} __attribute__ ((__packed__));
 
// Syncmanger status register 0x805+N*8
struct SyncManStatus {
  union {
    uint8_t raw;
    struct {
      uint8_t interrupt_write : 1;
      uint8_t interrupt_read  : 1;
      uint8_t res1            : 1;
      uint8_t mailbox_status  : 1;
      uint8_t buffer_status   : 2;
      uint8_t res2            : 2;
    } __attribute__ ((__packed__));      
  } __attribute__ ((__packed__));
  //static const unsigned BASE_ADDR=0x805;
  //static unsigned base_addr(unsigned num);
  //void print(std::ostream &os=std::cout) const;
} __attribute__ ((__packed__));
 
// Syncmanger activation register 0x806+N*8
struct SyncManActivate {
  union {
    uint8_t raw;
    struct {
      uint8_t enable : 1;
      uint8_t repeat_request : 1;
      uint8_t res4 : 4;
      uint8_t ecat_latch_event : 1;
      uint8_t pdi_latch_event : 1;
    } __attribute__ ((__packed__));      
  } __attribute__ ((__packed__));
  static const unsigned BASE_ADDR=0x806;
  static unsigned baseAddress(unsigned num);
  //void print(std::ostream &os=std::cout) const;  
  bool writeData(EthercatCom *com, EtherCAT_SlaveHandler *sh, EthercatDevice::AddrMode addrMode, unsigned num) const;
} __attribute__ ((__packed__));
 
// Syncmanger PDI control register 0x807+N*8
struct SyncManPDIControl {
  union {
    uint8_t raw;
    struct {
      uint8_t deactivate : 1;
      uint8_t repeat_ack : 1;
      uint8_t res6 : 6;
    } __attribute__ ((__packed__));
  } __attribute__ ((__packed__));      
  //static const unsigned BASE_ADDR=0x807;
  //static unsigned base_addr(unsigned num);
  //void print(std::ostream &os=std::cout) const;
} __attribute__ ((__packed__));
 
 
// For SyncManager settings REG 0x800+8*N
struct SyncMan {
  union {
    uint8_t raw[8];
    struct {
      uint16_t start_addr;
      uint16_t length;
      SyncManControl control;
      SyncManStatus status;
      SyncManActivate activate;
      SyncManPDIControl pdi_control;
    } __attribute__ ((__packed__));
  } __attribute__ ((__packed__));
  
  // Base address for first syncmanager
  static const unsigned BASE_ADDR=0x800;
  // Base address of Nth syncmanager for N=0-7
  static unsigned baseAddress(unsigned num);
  
  bool readData(EthercatCom *com, EtherCAT_SlaveHandler *sh, EthercatDevice::AddrMode addrMode, unsigned num);
  //void print(unsigned num, std::ostream &os=std::cout) const;
} __attribute__ ((__packed__));
 
namespace wg_util
{
unsigned computeChecksum(void const *data, unsigned length);
unsigned int rotateRight8(unsigned in);
};
 
}; // end namespace ethercat_hardware