/*
 * This software is dual-licensed under GPLv3 and a commercial
 * license. See the file LICENSE.md distributed with this software for
 * full license information.
 */

/** \file
 * \brief
 * Module to convert EtherCAT errors to readable messages.
 *
 * SDO abort messages and AL status codes are used to relay slave errors to
 * the user application. This module converts the binary codes to readable text.
 * For the defined error codes see the EtherCAT protocol documentation.
 */

#include "soem/soem.h"
#include <stdio.h>
#include "oshw.h"

#define EC_MAXERRORNAME 127

/** SDO error list type definition */
typedef struct
{
   /** Error code returned from SDO */
   uint32 errorcode;
   /** Readable error description */
   char errordescription[EC_MAXERRORNAME + 1];
} ec_sdoerrorlist_t;

/** AL status code list type definition */
typedef struct
{
   /** AL status code */
   uint16 ALstatuscode;
   /** Readable description */
   char ALstatuscodedescription[EC_MAXERRORNAME + 1];
} ec_ALstatuscodelist_t;

/** SoE error list type definition */
typedef struct
{
   /** SoE error code */
   uint16 errorcode;
   /** Readable description */
   char errordescription[EC_MAXERRORNAME + 1];
} ec_soeerrorlist_t;

/** MBX error list type definition */
typedef struct
{
   /** MBX error code */
   uint16 errorcode;
   /** Readable description */
   char errordescription[EC_MAXERRORNAME + 1];
} ec_mbxerrorlist_t;

char estring[EC_MAXERRORNAME];

/** SDO error list definition */
const ec_sdoerrorlist_t ec_sdoerrorlist[] = {
    {0x00000000, "No error"},
    {0x05030000, "Toggle bit not changed"},
    {0x05040000, "SDO protocol timeout"},
    {0x05040001, "Client/Server command specifier not valid or unknown"},
    {0x05040005, "Out of memory"},
    {0x06010000, "Unsupported access to an object"},
    {0x06010001, "Attempt to read to a write only object"},
    {0x06010002, "Attempt to write to a read only object"},
    {0x06010003, "Subindex can not be written, SI0 must be 0 for write access"},
    {0x06010004, "SDO Complete access not supported for variable length objects"},
    {0x06010005, "Object length exceeds mailbox size"},
    {0x06010006, "Object mapped to RxPDO, SDO download blocked"},
    {0x06020000, "The object does not exist in the object directory"},
    {0x06040041, "The object can not be mapped into the PDO"},
    {0x06040042, "The number and length of the objects to be mapped would exceed the PDO length"},
    {0x06040043, "General parameter incompatibility reason"},
    {0x06040047, "General internal incompatibility in the device"},
    {0x06060000, "Access failed due to a hardware error"},
    {0x06070010, "Data type does not match, length of service parameter does not match"},
    {0x06070012, "Data type does not match, length of service parameter too high"},
    {0x06070013, "Data type does not match, length of service parameter too low"},
    {0x06090011, "Subindex does not exist"},
    {0x06090030, "Value range of parameter exceeded (only for write access)"},
    {0x06090031, "Value of parameter written too high"},
    {0x06090032, "Value of parameter written too low"},
    {0x06090036, "Maximum value is less than minimum value"},
    {0x08000000, "General error"},
    {0x08000020, "Data cannot be transferred or stored to the application"},
    {0x08000021, "Data cannot be transferred or stored to the application because of local control"},
    {0x08000022, "Data cannot be transferred or stored to the application because of the present device state"},
    {0x08000023, "Object dictionary dynamic generation fails or no object dictionary is present"},
    {0xffffffff, "Unknown"},
};

/** AL status code list definition */
const ec_ALstatuscodelist_t ec_ALstatuscodelist[] = {
    {0x0000, "No error"},
    {0x0001, "Unspecified error"},
    {0x0002, "No memory"},
    {0x0003, "Invalid device setup"},
    {0x0004, "Invalid revision"},
    {0x0006, "SII/EEPROM information does not match firmware"},
    {0x0007, "Firmware update not successful. Old firmware still running"},
    {0x000E, "License error"},
    {0x0011, "Invalid requested state change"},
    {0x0012, "Unknown requested state"},
    {0x0013, "Bootstrap not supported"},
    {0x0014, "No valid firmware"},
    {0x0015, "Invalid mailbox configuration"},
    {0x0016, "Invalid mailbox configuration"},
    {0x0017, "Invalid sync manager configuration"},
    {0x0018, "No valid inputs available"},
    {0x0019, "No valid outputs"},
    {0x001A, "Synchronization error"},
    {0x001B, "Sync manager watchdog"},
    {0x001C, "Invalid sync Manager types"},
    {0x001D, "Invalid output configuration"},
    {0x001E, "Invalid input configuration"},
    {0x001F, "Invalid watchdog configuration"},
    {0x0020, "Slave needs cold start"},
    {0x0021, "Slave needs INIT"},
    {0x0022, "Slave needs PREOP"},
    {0x0023, "Slave needs SAFEOP"},
    {0x0024, "Invalid input mapping"},
    {0x0025, "Invalid output mapping"},
    {0x0026, "Inconsistent settings"},
    {0x0027, "Freerun not supported"},
    {0x0028, "Synchronisation not supported"},
    {0x0029, "Freerun needs 3buffer mode"},
    {0x002A, "Background watchdog"},
    {0x002B, "No valid Inputs and Outputs"},
    {0x002C, "Fatal sync error"},
    {0x002D, "No sync error"}, // was "Invalid Output FMMU Configuration"
    {0x002E, "Invalid input FMMU configuration"},
    {0x0030, "Invalid DC SYNC configuration"},
    {0x0031, "Invalid DC latch configuration"},
    {0x0032, "PLL error"},
    {0x0033, "DC sync IO error"},
    {0x0034, "DC sync timeout error"},
    {0x0035, "DC invalid sync cycle time"},
    {0x0036, "DC invalid sync0 cycle time"},
    {0x0037, "DC invalid sync1 cycle time"},
    {0x0041, "MBX_AOE"},
    {0x0042, "MBX_EOE"},
    {0x0043, "MBX_COE"},
    {0x0044, "MBX_FOE"},
    {0x0045, "MBX_SOE"},
    {0x004F, "MBX_VOE"},
    {0x0050, "EEPROM no access"},
    {0x0051, "EEPROM error"},
    {0x0052, "External hardware not ready"},
    {0x0060, "Slave restarted locally"},
    {0x0061, "Device identification value updated"},
    {0x0070, "Detected Module Ident List does not match"},
    {0x0080, "Supply voltage too low"},
    {0x0081, "Supply voltage too high"},
    {0x0082, "Temperature too low"},
    {0x0083, "Temperature too high"},
    {0x00f0, "Application controller available"},
    {0xffff, "Unknown"}};

/** SoE error list definition */
const ec_soeerrorlist_t ec_soeerrorlist[] = {
    {0x0000, "No error"},
    {0x1001, "No IDN"},
    {0x1009, "Invalid access to element 1"},
    {0x2001, "No Name"},
    {0x2002, "Name transmission too short"},
    {0x2003, "Name transmission too long"},
    {0x2004, "Name cannot be changed (read only)"},
    {0x2005, "Name is write-protected at this time"},
    {0x3002, "Attribute transmission too short"},
    {0x3003, "Attribute transmission too long"},
    {0x3004, "Attribute cannot be changed (read only)"},
    {0x3005, "Attribute is write-protected at this time"},
    {0x4001, "No units"},
    {0x4002, "Unit transmission too short"},
    {0x4003, "Unit transmission too long"},
    {0x4004, "Unit cannot be changed (read only)"},
    {0x4005, "Unit is write-protected at this time"},
    {0x5001, "No minimum input value"},
    {0x5002, "Minimum input value transmission too short"},
    {0x5003, "Minimum input value transmission too long"},
    {0x5004, "Minimum input value cannot be changed (read only)"},
    {0x5005, "Minimum input value is write-protected at this time"},
    {0x6001, "No maximum input value"},
    {0x6002, "Maximum input value transmission too short"},
    {0x6003, "Maximum input value transmission too long"},
    {0x6004, "Maximum input value cannot be changed (read only)"},
    {0x6005, "Maximum input value is write-protected at this time"},
    {0x7002, "Operation data transmission too short"},
    {0x7003, "Operation data transmission too long"},
    {0x7004, "Operation data cannot be changed (read only)"},
    {0x7005, "Operation data is write-protected at this time (state)"},
    {0x7006, "Operation data is smaller than the minimum input value"},
    {0x7007, "Operation data is smaller than the maximum input value"},
    {0x7008, "Invalid operation data:Configured IDN will not be supported"},
    {0x7009, "Operation data write protected by a password"},
    {0x700A, "Operation data is write protected, it is configured cyclically"},
    {0x700B, "Invalid indirect addressing: (e.g., data container, list handling)"},
    {0x700C, "Operation data is write protected, due to other settings"},
    {0x700D, "Reserved"},
    {0x7010, "Procedure command already active"},
    {0x7011, "Procedure command not interruptible"},
    {0x7012, "Procedure command at this time not executable (state)"},
    {0x7013, "Procedure command not executable (invalid or false parameters)"},
    {0x7014, "No data state"},
    {0x8001, "No default value"},
    {0x8002, "Default value transmission too long"},
    {0x8004, "Default value cannot be changed, read only"},
    {0x800A, "Invalid drive number"},
    {0x800A, "General error"},
    {0x800A, "No element addressed"},
    {0xffff, "Unknown"},
};

/** MBX error list definition */
const ec_mbxerrorlist_t ec_mbxerrorlist[] = {
    {0x0000, "No error"},
    {0x0001, "Syntax of 6 octet Mailbox Header is wrong"},
    {0x0002, "The mailbox protocol is not supported"},
    {0x0003, "Channel Field contains wrong value"},
    {0x0004, "The service is no supported"},
    {0x0005, "Invalid mailbox header"},
    {0x0006, "Length of received mailbox data is too short"},
    {0x0007, "No more memory in slave"},
    {0x0008, "The length of data is inconsistent"},
    {0xffff, "Unknown"},
};

/** Look up text string that belongs to SDO error code.
 *
 * @param[in] sdoerrorcode   SDO error code as defined in EtherCAT protocol
 * @return readable string
 */
const char *ec_sdoerror2string(uint32 sdoerrorcode)
{
   int i = 0;

   while ((ec_sdoerrorlist[i].errorcode != 0xffffffffUL) &&
          (ec_sdoerrorlist[i].errorcode != sdoerrorcode))
   {
      i++;
   }

   return ec_sdoerrorlist[i].errordescription;
}

/** Look up text string that belongs to AL status code.
 *
 * @param[in] ALstatuscode   AL status code as defined in EtherCAT protocol
 * @return readable string
 */
char *ec_ALstatuscode2string(uint16 ALstatuscode)
{
   int i = 0;

   while ((ec_ALstatuscodelist[i].ALstatuscode != 0xffff) &&
          (ec_ALstatuscodelist[i].ALstatuscode != ALstatuscode))
   {
      i++;
   }

   return (char *)ec_ALstatuscodelist[i].ALstatuscodedescription;
}

/** Look up text string that belongs to SoE error code.
 *
 * @param[in] errorcode   SoE error code as defined in EtherCAT protocol
 * @return readable string
 */
char *ec_soeerror2string(uint16 errorcode)
{
   int i = 0;

   while ((ec_soeerrorlist[i].errorcode != 0xffff) &&
          (ec_soeerrorlist[i].errorcode != errorcode))
   {
      i++;
   }

   return (char *)ec_soeerrorlist[i].errordescription;
}

/** Look up text string that belongs to MBX error code.
 *
 * @param[in] errorcode   MBX error code as defined in EtherCAT protocol
 * @return readable string
 */
char *ec_mbxerror2string(uint16 errorcode)
{
   int i = 0;

   while ((ec_mbxerrorlist[i].errorcode != 0xffff) &&
          (ec_mbxerrorlist[i].errorcode != errorcode))
   {
      i++;
   }

   return (char *)ec_mbxerrorlist[i].errordescription;
}

/** Convert an error to text string.
 *
 * @param[in] Ec Struct describing the error.
 * @return readable string
 */
char *ecx_err2string(const ec_errort Ec)
{
   char timestr[20];
   snprintf(timestr, sizeof(timestr), "Time:%12.3f", Ec.Time.tv_sec + (Ec.Time.tv_nsec / 1000000000.0));
   switch (Ec.Etype)
   {
   case EC_ERR_TYPE_SDO_ERROR:
   {
      snprintf(estring, sizeof(estring), "%s SDO slave:%d index:%4.4x.%2.2x error:%8.8x %s\n",
              timestr, Ec.Slave, Ec.Index, Ec.SubIdx, (unsigned)Ec.AbortCode, ec_sdoerror2string(Ec.AbortCode));
      break;
   }
   case EC_ERR_TYPE_EMERGENCY:
   {
      snprintf(estring, sizeof(estring), "%s EMERGENCY slave:%d error:%4.4x\n",
              timestr, Ec.Slave, Ec.ErrorCode);
      break;
   }
   case EC_ERR_TYPE_PACKET_ERROR:
   {
      snprintf(estring, sizeof(estring), "%s PACKET slave:%d index:%4.4x.%2.2x error:%d\n",
              timestr, Ec.Slave, Ec.Index, Ec.SubIdx, Ec.ErrorCode);
      break;
   }
   case EC_ERR_TYPE_SDOINFO_ERROR:
   {
      snprintf(estring, sizeof(estring), "%s SDO slave:%d index:%4.4x.%2.2x error:%8.8x %s\n",
              timestr, Ec.Slave, Ec.Index, Ec.SubIdx, (unsigned)Ec.AbortCode, ec_sdoerror2string(Ec.AbortCode));
      break;
   }
   case EC_ERR_TYPE_SOE_ERROR:
   {
      snprintf(estring, sizeof(estring), "%s SoE slave:%d IDN:%4.4x error:%4.4x %s\n",
              timestr, Ec.Slave, Ec.Index, (unsigned)Ec.AbortCode, ec_soeerror2string(Ec.ErrorCode));
      break;
   }
   case EC_ERR_TYPE_MBX_ERROR:
   {
      snprintf(estring, sizeof(estring), "%s MBX slave:%d error:%4.4x %s\n",
              timestr, Ec.Slave, Ec.ErrorCode, ec_mbxerror2string(Ec.ErrorCode));
      break;
   }
   default:
   {
      snprintf(estring, sizeof(estring), "%s error:%8.8x\n",
              timestr, (unsigned)Ec.AbortCode);
      break;
   }
   }
   return (char *)estring;
}

/** Look up error in ec_errorlist and convert to text string.
 *
 * @param[in]  context        context struct
 * @return readable string
 */
char *ecx_elist2string(ecx_contextt *context)
{
   ec_errort Ec;

   if (ecx_poperror(context, &Ec))
   {
      return ecx_err2string(Ec);
   }
   else
   {
      return "";
   }
}