cpmsg_h.html

Controller Area Network Programming Interface Environment Ver0.8。 CanPie版本0.8. CAN总线通讯编程接口源代码。

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<p>
Get Standard Identifier.
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<b>Parameters: </b><dd>
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<tr><td valign=top><em>msg</em>
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Pointer to a structure of type <a class="el" href="struct_CpStruct_CAN.html">CpStruct_CAN</a> </td></tr>
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<b>Returns: </b><dd>
Identifier value
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</dl>This function retrieves the identifier value of a given CAN message structure (11 bit identifier).     </td>
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<a name="a7" doxytag="cpmsg.h::CpMsgSetData"></a><p>
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Cp_EXPORT void Cp_PREFIX CpMsgSetData (
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<a class="el" href="struct_CpStruct_CAN.html">CpStruct_CAN</a> * <em>msg</em>, 
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_U08 <em>byteNum</em>, 
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_U08 <em>byteVal</em>&nbsp;)
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<p>
Set message data.
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<b>Parameters: </b><dd>
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<tr><td valign=top><em>msg</em>
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Pointer to a structure of type <a class="el" href="struct_CpStruct_CAN.html">CpStruct_CAN</a> </td></tr>
<tr><td valign=top><em>byteNum</em>
&nbsp;</td><td>
zero based byte position </td></tr>
<tr><td valign=top><em>byteVal</em>
&nbsp;</td><td>
value of byte 'byteNum'
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</dl>This function sets the value of a data byte from a given  CAN message structure. The parameter 'byteNum' is zero based. That means the last byte from a message with DLC = 8 is  accessed with a byteNum value of 7.     </td>
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<a name="a5" doxytag="cpmsg.h::CpMsgSetDlc"></a><p>
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Cp_EXPORT void Cp_PREFIX CpMsgSetDlc (
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<a class="el" href="struct_CpStruct_CAN.html">CpStruct_CAN</a> * <em>msg</em>, 
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_U08 <em>dlc</em>&nbsp;)
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<p>
Set Data Length Code.
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<b>Parameters: </b><dd>
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<tr><td valign=top><em>msg</em>
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Pointer to a structure of type <a class="el" href="struct_CpStruct_CAN.html">CpStruct_CAN</a> </td></tr>
<tr><td valign=top><em>dlc</em>
&nbsp;</td><td>
Data Length Code
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</dl>This function sets the data length code (DLC) of a given  CAN message structure.     </td>
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<a name="a3" doxytag="cpmsg.h::CpMsgSetExtId"></a><p>
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Cp_EXPORT void Cp_PREFIX CpMsgSetExtId (
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<a class="el" href="struct_CpStruct_CAN.html">CpStruct_CAN</a> * <em>msg</em>, 
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_U32 <em>id</em>, 
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_BIT <em>rtr</em>&nbsp;)
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<p>
Set Extended Identifier.
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<b>Parameters: </b><dd>
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<tr><td valign=top><em>msg</em>
&nbsp;</td><td>
Pointer to a structure of type <a class="el" href="struct_CpStruct_CAN.html">CpStruct_CAN</a> </td></tr>
<tr><td valign=top><em>id</em>
&nbsp;</td><td>
identifier value </td></tr>
<tr><td valign=top><em>rtr</em>
&nbsp;</td><td>
RTR flag
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</dl>This function sets the identifier value of a given CAN message structure. If the parameter 'rtr' is TRUE, the RTR bit in the CAN message is set.     </td>
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<a name="a1" doxytag="cpmsg.h::CpMsgSetStdId"></a><p>
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Cp_EXPORT void Cp_PREFIX CpMsgSetStdId (
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<a class="el" href="struct_CpStruct_CAN.html">CpStruct_CAN</a> * <em>msg</em>, 
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_U16 <em>id</em>, 
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_BIT <em>rtr</em>&nbsp;)
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<p>
Set Standard Identifier.
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<dl compact><dt>
<b>Parameters: </b><dd>
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<tr><td valign=top><em>msg</em>
&nbsp;</td><td>
Pointer to a structure of type <a class="el" href="struct_CpStruct_CAN.html">CpStruct_CAN</a> </td></tr>
<tr><td valign=top><em>id</em>
&nbsp;</td><td>
identifier value </td></tr>
<tr><td valign=top><em>rtr</em>
&nbsp;</td><td>
RTR flag
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</dl>This function sets the identifier value of a given CAN message structure. If the parameter 'rtr' is TRUE, the RTR bit in the CAN message is set.     </td>
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Last modified: 10 Jul 2001
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