1 | /*-----------------------------------------------------------------------------
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2 | cms.h -- CAN Message Specification CMS
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3 |
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4 | Copyright (c) 1994 JANZ Computer AG
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5 | All Rights Reserved
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6 |
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7 | Created 94/10/11 by Soenke Hansen
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8 | Version 1.32 of 99/06/18
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9 |
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10 | Definitions and type definitions for COB's and CMS Objects.
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11 | Prototypes of functions defined in cms.c.
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12 |
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13 | -----------------------------------------------------------------------------*/
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14 |
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15 |
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16 | #ifndef cms_DEFINED
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17 | #define cms_DEFINED
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18 |
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19 | #ifdef __cplusplus
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20 | extern "C" {
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21 | #endif
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22 |
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23 | #include "defs.h"
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24 |
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25 | #define COB_LEN 8 /* max. data length of CAN message */
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26 | #define CMS_NAME_LEN 13 /* cf. CiA/DS207 */
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27 | #define COB_NAME_LEN 14 /* CMS_NAME_LEN + 1 */
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28 |
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29 |
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30 | /* COB types */
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31 | #define COB_RECEIVE 0
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32 | #define COB_TRANSMIT 1
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33 |
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34 |
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35 | /* Kinds of CMS objects */
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36 | #define CMS_VARIABLE 0x0000
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37 | #define CMS_VARSET 0x1000
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38 | #define CMS_DOMAIN 0x2000
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39 | #define CMS_EVENT 0x3000
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40 | #define cmso_kind(type) ((type) & 0xf000)
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41 |
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42 | /* Classes of CMS objects */
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43 | #define CMS_BASIC 0x0100
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44 | #define CMS_MULTIPLEXED 0x0200
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45 | #define CMS_CONTROLLED 0x0100
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46 | #define CMS_UNCONTROLLED 0x0200
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47 | #define CMS_STORED 0x0300
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48 | #define cmso_class(type) ((type) & 0x0300)
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49 |
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50 | /* User types of CMS objects */
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51 | #define CMS_CLIENT 0x0010
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52 | #define CMS_SERVER 0x0020
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53 | #define cmso_user(type) ((type) & 0x0030)
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54 |
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55 | /* Access types of Variables */
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56 | #define CMS_READ_ONLY 0x0001
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57 | #define CMS_WRITE_ONLY 0x0002
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58 | #define CMS_READ_WRITE 0x0003
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59 | #define cmso_access(type) ((type) & 0x0007)
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60 |
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61 |
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62 | #ifdef FIRMWARE
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63 |
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64 | /* CAN Communication Object */
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65 | struct cob {
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66 | BYTE_t tc; /* COB type and class */
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67 | BYTE_t prio; /* priority */
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68 | WORD_t inht; /* inhibit time */
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69 | WORD_t head; /* COB head (descriptor) */
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70 | BYTE_t *nmcms; /* name of CMS object */
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71 | BYTE_t nmsfx; /* suffix of COB name */
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72 | struct calo *co; /* parent CAL object */
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73 | struct cob *next; /* list of used COBs */
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74 | };
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75 |
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76 | #define NIL_COB (struct cob *)0
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77 |
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78 | /* Set and get COB attributes */
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79 | #define cob_length(cob) ((cob)->head & 0x000f)
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80 | #define cob_tc(t,c) (((c) & 0x07) | (((t) & 0x01) << 4))
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81 | #define cob_class(cob) ((cob)->tc & 0x07)
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82 | #define cob_type(cob) (((cob)->tc >> 4) & 0x01)
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83 |
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84 |
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85 | /* Data set size type (for domains) */
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86 | #if TYPEDEFS == 1
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87 | typedef unsigned long DSIZE_t; /* 32 bit unsigned integer */
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88 | #else
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89 | #define DSIZE_t unsigned long
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90 | #endif
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91 |
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92 | /* Components of messages in domain call-backs */
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93 | #define dom_spec u.m2.r /* sub-specifier MS_DOM_* */
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94 | #define dom_reason u.m2.b[0] /* reason for failure */
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95 |
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96 | #define cms_spec u.m2.r /* cms sub-specifier MS_CMS_DATA */
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97 | #define cms_id u.m2.d /* cms object id */
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98 | #define cms_failure u.m2.b[0] /* cms failure code */
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99 |
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100 | /* Location of data set size in message. */
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101 | #define dsize_in_msg(m) (&(m)->u.m2.b[4])
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102 |
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103 | /* Convert between data set size and an array of 4 bytes */
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104 | #define dsize_from_bytes(b) ((DSIZE_t)(b)[0] + ((DSIZE_t)(b)[1] << 8) + \
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105 | ((DSIZE_t)(b)[2] << 16) + ((DSIZE_t)(b)[3] << 24))
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106 |
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107 | /* Domain specific state */
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108 | struct domain {
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109 | BYTE_t *data; /* data buffer provided by application */
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110 | DSIZE_t len; /* allocated length of buffer */
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111 | DSIZE_t rlen; /* actual length of data received */
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112 | DSIZE_t dsize; /* data set size if positive */
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113 | BYTE_t ics; /* initial command specifier */
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114 | BYTE_t cs; /* segment command spec. except for "n" */
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115 | BYTE_t csb; /* backup of command specifier */
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116 | BYTE_t more; /* more data blocks to be transferred? */
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117 | BYTE_t pos; /* position in CAN message buffer */
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118 | BYTE_t mux[3]; /* buffer for multiplexer */
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119 | int muxlen; /* length of multiplexer */
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120 | struct message *dm; /* delayed message */
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121 | WORD_t config; /* some configurations */
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122 | int pend_ack; /* flags for pending acknowlegdes */
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123 | int del_ack; /* does delayed message need ack? */
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124 | int delayed; /* set if delay occurs */
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125 | };
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126 |
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127 | #endif /* FIRMWARE */
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128 |
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129 |
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130 | /* Flags in config/pend_ack */
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131 | #define CMS_INHIBIT_CONFIG 1 /* multiplexor */
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132 | /* flags will be interpreted as default inhibit time (for CANopen PDOs) */
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133 |
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134 | #define CMS_DOMAIN_GENERAL_CONFIG 0 /* multiplexor */
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135 | #define DOM_ACKNOWLEDGE (1<<0)
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136 | #define DOM_SDO_EVERY_STATE_ACTIV (1<<8)
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137 | #define DOM_RCPT_ACKNOWLEDGE (1<<1)
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138 |
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139 | /* Flags for configuring CMS domains at their creation */
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140 | #define DOM_SDO_DBT_CAPABILITY (1<<0)
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141 | /* Flag specifies, if it is allowed to distribute the SDO-CMS
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142 | * object`s identifier by DBT services in preparing phases
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143 | * (CAL boot up for CANopen slaves).
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144 | */
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145 |
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146 | #ifdef FIRMWARE
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147 |
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148 | /* Domains must be in the idle state to accept service requests. */
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149 | #define dom_set_idle(dom) ((dom)->ics = 0xff)
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150 | #define dom_is_idle(dom) ((dom)->ics == 0xff)
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151 |
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152 | #define dom_is_delayed(dom) ((dom)->delayed != 0)
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153 |
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154 | /* True if the COB is a data COB with type COB_RECEIVE or is a remote COB
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155 | with type COB_TRANSMIT */
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156 | #define cob_accept(cob) ((((cob)->head ^ (WORD_t)((cob)->tc)) & 0x0010) == 0)
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157 |
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158 |
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159 |
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160 | /* This linked list holds the created (and enabled, coded!) TPDOs */
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161 | struct pdoSendList {
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162 | struct cmso *cmsIdOfPdo; /* cms object id of TPDO */
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163 | struct pdoSendList *next; /* pointer to next object */
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164 | };
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165 | #define NIL_PDO_SEND_LIST (struct pdoSendList *)0
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166 |
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167 | struct pdoMapList {
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168 | #ifdef CAL_CANOPEN_CLAMPED
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169 | LWORD_t cmsObjectMappingEntry;
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170 | #else
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171 | unsigned char *offsetInDpm;
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172 | #endif
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173 | BYTE_t mapLength;
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174 | struct pdoMapList *next;
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175 | };
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176 | #define NIL_PDO_MAP_LIST (struct pdoMapList *)0
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177 |
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178 | /* CANopen add on to CMS Object; is only used at PDOs */
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179 | struct copAddOn {
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180 | BYTE_t transType;
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181 | BYTE_t actualTransCount;
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182 | BYTE_t state;
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183 | struct pdoMapList *mapList;
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184 | };
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185 | #define NIL_COP_ADD_ON (struct copAddOn *)0
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186 | /* values of state of PDO */
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187 | #define BIT_PDO_ENABLED (1 << 0)
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188 | #define BIT_PDO_DISABLED (0 << 0)
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189 |
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190 |
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191 |
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192 | /* CMS Object */
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193 | struct cmso {
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194 | BYTE_t *name; /* name of CMS Object */
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195 | WORD_t type; /* var/dom/evt,bas/mux,user,access */
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196 | BYTE_t *buf; /* buffer pointer */
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197 | BYTE_t dbuf[COB_LEN]; /* data buffer */
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198 | BYTE_t mux; /* save multiplexor here */
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199 | struct domain *dom; /* domain specific */
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200 | WORD_t flags; /* special flags for internal use */
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201 | WORD_t tid; /* id for usage with timer timeout ? */
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202 | WORD_t hid; /* host assigned object id */
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203 | OBJECT adata; /* application data */
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204 | void (*ahdl)(); /* application handler CMS messages */
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205 | struct cob *cobs; /* list of used COBs */
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206 | struct cob rxcob; /* receive COB */
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207 | struct cob txcob; /* transmit COB */
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208 | struct cmso *next; /* list of CMS Objects */
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209 | OBJECT obj; /* associated CAL Object */
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210 | #ifdef nodef
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211 | perhaps TODO: inhibit the possibility to send user-data in cms-objects
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212 | which will be driven by e.g. TPU irqs and get their data from module!
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213 | BYTE_t canopen_flags /* signals special canopen behavior */
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214 | /* of cms-object (e.g. TIME, SYNC) */
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215 | #endif
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216 | struct copAddOn *canOpenControls;
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217 | };
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218 |
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219 | #define NIL_CMSO (struct cmso *)0
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220 |
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221 | #endif /* FIRMWARE */
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222 |
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223 | /* Various flags */
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224 | #define INHIBITED 0x01
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225 | #define TX_REQUEST 0x02
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226 | #define TX_REQUEST_CON 0x04
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227 | #define ENABLED 0x08
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228 |
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229 | #define OUTSTANDING 0x10
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230 | #define RW_REQUEST_MASK 0x20
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231 | #define WRITE_REQUEST 0x20
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232 |
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233 |
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234 | /* Timer/BCAN request Id modifiers */
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235 | #define REQ_INHIBIT_TIME (0x1000 & ~CALID_MASK)
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236 | #define REQ_CON_TIMEOUT (0x2000 & ~CALID_MASK)
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237 |
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238 | #ifdef FIRMWARE
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239 |
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240 | /* Disable CMS Definition services */
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241 | extern int DisableDefCms(void);
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242 |
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243 | /* Enable CMS Definition services */
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244 | extern void EnableDefCms(void);
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245 |
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246 | /* Check if CMS Definition services are disabled */
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247 | extern int IsDisabledDefCms(void);
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248 |
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249 | /* Initialize the CMS Object Directory */
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250 | extern void InitCms(WORD_t);
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251 |
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252 | /* Create a CMS Object */
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253 | struct cmso *NewCmsO(BYTE_t *);
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254 |
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255 | /* Create a special CMS Object without adding it to directory */
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256 | struct cmso *NewCmsONoDBT(BYTE_t *);
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257 |
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258 | /* Set host assigned id for a CMS Object */
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259 | void SetCmsOhid(struct cmso *co, WORD_t id);
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260 |
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261 | /* Delete a CMS Object */
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262 | extern void DeleteCmsO(struct cmso *);
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263 |
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264 | /* Get a CMS Object by name */
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265 | extern struct cmso *GetCmsO(BYTE_t *);
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266 |
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267 | /* Get next CMS Object. Used when looping through the defined CMS Objects. */
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268 | extern struct cmso *GetNextCmsO(int);
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269 |
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270 | /* Get next COB used by a CMS Object. */
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271 | extern struct cob *GetNextCobCms(int);
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272 |
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273 | /* Construct COB name */
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274 | extern void cob_name(struct cob *, BYTE_t *);
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275 |
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276 | /* Invocation of (remote) CMS service for a CMS object. */
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277 | extern int cms_invoke(struct cmso *, BYTE_t *, int);
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278 |
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279 | /* Handler for non-CAN messages to CMS objects. */
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280 | extern void cms_no_can_hdl(struct cmso *, struct message *);
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281 |
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282 |
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283 | /*------ Application handler function --------------------------------------*/
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284 |
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285 | /* Default application handler for CMS objects. */
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286 | extern void DfltApplHdlCms(struct cmso *, struct message *);
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287 | #define NIL_AHDL DfltApplHdlCms
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288 |
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289 | #endif /* FIRMWARE */
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290 |
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291 | /* Specific flags for JANZ */
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292 | #define CMS_USE_HOST_ID (1<<0)
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293 |
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294 |
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295 | /*------ CMS Variables -----------------------------------------------------*/
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296 |
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297 | #ifdef FIRMWARE
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298 |
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299 | /* Definition of a CMS Multiplexed Variable */
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300 | struct cmso *MultiplexedVariable(
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301 | BYTE_t *, /* name of CMS object to be created */
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302 | WORD_t , /* user and access type */
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303 | int , /* length of data type (<=8) */
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304 | int , /* range: [0,7] */
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305 | OBJECT , /* application data */
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306 | void (*)() /* appl. handler for CMS messages */
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307 | );
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308 |
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309 |
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310 | /* Definition of a CMS Basic Variable */
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311 | extern struct cmso *BasicVariable(
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312 | BYTE_t *, /* name of CMS object to be created */
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313 | WORD_t , /* user and access type */
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314 | int , /* length of data type (<=8) */
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315 | int , /* range: [0,7] */
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316 | OBJECT , /* application data */
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317 | void (*)() /* appl. handler for CAN data frames */
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318 | );
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319 |
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320 | /* Definition of a CMS Basic Variable for SYNC features */
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321 | extern struct cmso *BasicVariableSYNC(
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322 | BYTE_t *, /* name of CMS object to be created */
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323 | WORD_t , /* user and access type */
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324 | int , /* length of data type (<=8) */
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325 | int , /* range: [0,7] */
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326 | OBJECT , /* application data */
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327 | void (*)(), /* appl. handler for CAN data frames */
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328 | WORD_t, /* predefined transmit ID */
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329 | WORD_t, /* predefined receive ID */
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330 | BYTE_t /* DBT capibilities */
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331 | );
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332 |
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333 | /* Update Read-Only Variable in Server */
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334 | extern int UpdateVariable(struct cmso *, BYTE_t *);
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335 |
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336 | /* Client requests Write Variable Service */
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337 | extern int WriteVariableReq(struct cmso *, BYTE_t *);
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338 |
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339 | /* Client requests Read Variable Service */
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340 | extern int ReadVariableReq(struct cmso *);
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341 |
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342 | /* Client requests Write Variable Service for multiplexed variables. */
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343 | int WriteMultiplexedVariableReq(struct cmso *co, int mux, BYTE_t *value);
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344 |
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345 | /* Client requests Read Variable Service. */
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346 | int ReadMultiplexedVariableReq(struct cmso *co, int mux);
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347 |
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348 |
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349 | /* Server responds to a Write Variable Service */
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350 | int WriteVariableRes(struct cmso *, int , BYTE_t *);
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351 |
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352 | /* Server responds to a Write Variable Service */
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353 | int ReadVariableRes(struct cmso *co, int status, BYTE_t *value);
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354 |
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355 |
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356 |
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357 | /*------ CMS Events --------------------------------------------------------*/
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358 |
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359 | /* Definition of a CMS Uncontrolled Event */
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360 | extern struct cmso *UncontrolledEvent(
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361 | BYTE_t *, /* name of CMS object to be created */
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362 | WORD_t , /* user type */
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363 | int , /* length of data type (<=7) */
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364 | int , /* range: [0,7] */
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365 | OBJECT , /* application data */
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366 | void (*)() /* appl. handler for CMS messages */
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367 | );
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368 |
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369 | /* Definition of a CMS Controlled Event */
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370 | extern struct cmso *ControlledEvent(
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371 | BYTE_t *, /* name of CMS object to be created */
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372 | WORD_t , /* user type */
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373 | int , /* length of data type (<=7) */
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374 | int , /* range: [0,7] */
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375 | OBJECT , /* application data */
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376 | void (*)() /* appl. handler for CMS messages */
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377 | );
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378 |
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379 | /* Definition of a CMS Stored Event */
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380 | extern struct cmso *StoredEvent(
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381 | BYTE_t *, /* name of CMS object to be created */
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382 | WORD_t , /* user and access type */
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383 | int , /* length of data type (<=8) */
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384 | int , /* range: [0,7] */
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385 | OBJECT , /* application data */
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386 | void (*)() /* appl. handler for CMS messages */
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387 | );
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388 |
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389 | /* Definition of a Stored Event for CANopen TIMESTAMP object */
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390 | extern struct cmso *StoredEventTS(
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391 | BYTE_t *, /* name of CMS object to be created */
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392 | WORD_t , /* user and access type */
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393 | int , /* length of data type (<=8) */
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394 | int , /* range: [0,7] */
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395 | OBJECT , /* application data */
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396 | void (*)(), /* appl. handler for CAN data frames */
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397 | WORD_t, /* predefined transmit ID */
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398 | WORD_t, /* predefined receive ID */
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399 | BYTE_t /* DBT capibilities */
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400 | );
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401 |
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402 | /* Definition of a Stored Event for CANopen EMERGENCY object */
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403 | extern struct cmso *StoredEventEMCY(
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404 | BYTE_t *, /* name of CMS object to be created */
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405 | WORD_t , /* user and access type */
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406 | int , /* length of data type (<=8) */
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407 | int , /* range: [0,7] */
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408 | OBJECT , /* application data */
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409 | void (*)(), /* appl. handler for CAN data frames */
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410 | WORD_t, /* predefined transmit ID */
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411 | WORD_t, /* predefined receive ID */
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412 | BYTE_t /* DBT capibilities */
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413 | );
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414 |
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415 | /* Definition of a Stored Event for CANopen PDO */
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416 | extern struct cmso *StoredEventPDO(
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417 | BYTE_t *, /* name of CMS object to be created */
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418 | WORD_t , /* user and access type */
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419 | int , /* length of data type (<=8) */
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420 | int , /* range: [0,7] */
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421 | OBJECT , /* application data */
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422 | void (*)(), /* appl. handler for CAN data frames */
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423 | WORD_t, /* predefined transmit ID */
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424 | WORD_t, /* predefined receive ID */
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425 | BYTE_t /* DBT capibilities */
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426 | );
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427 |
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428 | /* Notify Event service. */
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429 | extern int NotifyEvent(struct cmso *, BYTE_t *);
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430 |
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431 | /* Store Event service. */
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432 | extern int StoreEvent(struct cmso *, BYTE_t *, int);
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433 |
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434 | /* Read Event service. */
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435 | extern int ReadEvent(struct cmso *);
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436 |
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437 | /* Set Event Control State service. */
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438 | extern int SetControlEventReq(struct cmso *, int);
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439 | extern int SetControlEventRes(struct cmso *, int, int, BYTE_t *);
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440 |
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441 | /*-------- CMS Domains ------------------------------------------------------*/
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442 |
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443 | /* Implemented in cmsdom.c */
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444 |
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445 | /* Definition of a CMS Domain */
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446 | extern struct cmso *Domain(
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447 | BYTE_t *, /* name of CMS object to be created */
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448 | WORD_t , /* class and user type */
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449 | int , /* multiplexer length (<=3) */
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450 | int , /* range: [0,7] */
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451 | OBJECT , /* application data */
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452 | void (*)() /* appl. handler for CMS messages */
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453 | );
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454 |
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455 | /* Definition of a CMS Domain for CANopen SDOs */
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456 | extern struct cmso *DomainSDO(
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457 | BYTE_t *, /* name of CMS object to be created */
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458 | WORD_t , /* class and user type */
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459 | int , /* multiplexer length (<=3) */
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460 | int , /* range: [0,7] */
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461 | OBJECT , /* application data */
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462 | void (*)(), /* appl. handler for CMS messages */
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463 | WORD_t Tx_SDO_ID, /* Transmit SDO ID as seen by node */
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464 | WORD_t Rx_SDO_ID, /* Receive SDO ID as seen by node */
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465 | BYTE_t dbt_cap /* DBT capability flag of CANopen node */
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466 | );
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467 |
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468 | /* Abort Domain Transfer */
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469 | extern void DomAbortReq(
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470 | struct cmso *, /* Domain CMS object */
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471 | BYTE_t * /* nil or 4 bytes */
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472 | );
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473 |
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474 | /* Client requests the statrt of normal domain download.
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475 | Subsequently transfer of the data block, if provided by the client,
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476 | will start. Expedited transfer will be chosen iff 0<dsize<=4, len==dsize,
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477 | and exped!=0 (expedited enabled) else normal transfer is started.
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478 | The client is called back on service completion or else for more data. */
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479 | extern int DomDownloadStartReq(
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480 | struct cmso *, /* the domain handle */
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481 | BYTE_t *, /* multiplexor */
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482 | BYTE_t *, /* (first) data block to be downloaded */
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483 | DSIZE_t , /* length of (first) data block */
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484 | DSIZE_t , /* data set size if > 0 */
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485 | int , /* enable expedited transfer */
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486 | int /* true if more blocks will follow */
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487 | );
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488 |
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489 | /* Client request the continuation of a download and provides the next
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490 | data block to be transfered after having received to confirmation
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491 | for the previous block if any. If the client provides no data (len==0)
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492 | then the service completes successfully. If more is true then the
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493 | client wishes to be asked for additional data blocks. */
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494 | extern int DomDownloadContReq(
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495 | struct cmso *, /* the domain handle */
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496 | BYTE_t *, /* (next) data block to transmit/receive */
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497 | DSIZE_t , /* allocated length of data block */
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498 | int /* true if more blocks will follow */
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499 | );
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500 |
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501 | /* Server responds to download request providing a receive buffer for
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502 | data to be downloaded. The buffer must be able to hold 7 bytes
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503 | at least. */
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504 | extern int DomDownloadRes(
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505 | struct cmso *, /* the domain handle */
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506 | BYTE_t *, /* (next) data block to transmit/receive */
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507 | DSIZE_t /* allocated length of data block */
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508 | );
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509 |
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510 | /* Client requests initialization of a domain upload.
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511 | The client will be called back to to receive expedited data or to
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512 | provide buffers to receive data blocks of a normal transfer.
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513 | Note that the server decides about using normal or expedited transfer. */
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514 | extern int DomUploadStartReq(
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515 | struct cmso *, /* the domain handle */
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516 | BYTE_t * /* multiplexor */
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517 | );
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518 |
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519 | /* The server received a domain upload indication. The server
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520 | responds by calling the following function to accept the upload
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521 | request. Expedited transfer will be chosen iff 0<dsize<=4, len==dsize,
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522 | and exped!=0 (expedited enabled) else normal transfer is started.
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523 | In case of multiplexed domains the data must be consistent with
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524 | the multiplexor received on indication.
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525 | The server will be called back for more data to be uploaded if necessary.
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526 | The server will be called back on completion of the service. */
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527 | extern int DomUploadRes(
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528 | struct cmso *, /* the domain handle */
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529 | BYTE_t *, /* (first) data block to be uploaded */
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530 | DSIZE_t , /* length of (first) data block */
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531 | DSIZE_t , /* data set size if > 0 */
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532 | int , /* enable expedited transfer */
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533 | int /* true if more blocks will follow */
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534 | );
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535 |
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536 | /* Client requested the continuation of a upload. Server provides the next
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537 | data block to be transfered. If the server provides no data (len==0)
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538 | then the service completes successfully. If more is true then the
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539 | server wishes to be asked for additional data blocks. */
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540 | extern int DomUploadContRes(
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541 | struct cmso *, /* the domain handle */
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542 | BYTE_t *, /* (next) data block to transmit/receive */
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543 | DSIZE_t , /* allocated length of data block */
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544 | int /* true if more blocks will follow */
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545 | );
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546 |
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547 | extern void DomHostAcknowledgeRes(
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548 | struct cmso *co
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549 | );
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550 |
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551 | extern void DomRcptAcknowledgeReq(
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552 | struct cmso *co
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553 | );
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554 |
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555 | #endif /* FIRMWARE */
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556 |
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557 | /* bitpositions in cs */
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558 | #define D_MORE (1 << 0) /* more date will follow */
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559 | #define D_EXPED (1 << 1) /* inhibit expedited data transfer */
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560 | #define D_SUCCESS (1 << 2) /* success indication */
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561 |
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562 | #ifdef __cplusplus
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563 | }
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564 | #endif
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565 |
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566 | #endif /* !cms_DEFINED */
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