at91sam7a3_can_mb.html

1、程序目的：介绍AT91SAM7S256-EK TWI的基本用法： 2、 功能说明:通过TWI实现I2C

<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0xC</b></font></td><td><font size="-1">CAN_MB_MFID (<a href="AT91SAM7A3_CAN_MB.html#CAN_MFID">CAN_MFID</a>)</font></td><td><font size="-1">MailBox Family ID Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x10</b></font></td><td><font size="-1">CAN_MB_MSR (<a href="AT91SAM7A3_CAN_MB.html#CAN_MSR">CAN_MSR</a>)</font></td><td><font size="-1">MailBox Status Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x14</b></font></td><td><font size="-1">CAN_MB_MDL (<a href="AT91SAM7A3_CAN_MB.html#CAN_MDL">CAN_MDL</a>)</font></td><td><font size="-1">MailBox Data Low Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x18</b></font></td><td><font size="-1">CAN_MB_MDH (<a href="AT91SAM7A3_CAN_MB.html#CAN_MDH">CAN_MDH</a>)</font></td><td><font size="-1">MailBox Data High Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x1C</b></font></td><td><font size="-1">CAN_MB_MCR (<a href="AT91SAM7A3_CAN_MB.html#CAN_MCR">CAN_MCR</a>)</font></td><td><font size="-1">MailBox Control Register</font></td></tr>
</null></table><br></null><h2>CAN_MB Register Description</h2>
<null><a name="CAN_MMR"></a><h4><a href="#CAN_MB">CAN_MB</a>: <i><a href="AT91SAM7A3_h.html#AT91_REG">AT91_REG</a></i> CAN_MMR  <i>MailBox Mode Register</i></h4><ul><null><font size="-2"><li><b>CAN0_MB0</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB0_MMR">AT91C_CAN0_MB0_MMR</a></i> 0xFFF80200</font><font size="-2"><li><b>CAN0_MB1</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB1_MMR">AT91C_CAN0_MB1_MMR</a></i> 0xFFF80220</font><font size="-2"><li><b>CAN0_MB2</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB2_MMR">AT91C_CAN0_MB2_MMR</a></i> 0xFFF80240</font><font size="-2"><li><b>CAN0_MB3</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB3_MMR">AT91C_CAN0_MB3_MMR</a></i> 0xFFF80260</font><font size="-2"><li><b>CAN0_MB4</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB4_MMR">AT91C_CAN0_MB4_MMR</a></i> 0xFFF80280</font><font size="-2"><li><b>CAN0_MB5</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB5_MMR">AT91C_CAN0_MB5_MMR</a></i> 0xFFF802A0</font><font size="-2"><li><b>CAN0_MB6</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB6_MMR">AT91C_CAN0_MB6_MMR</a></i> 0xFFF802C0</font><font size="-2"><li><b>CAN0_MB7</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB7_MMR">AT91C_CAN0_MB7_MMR</a></i> 0xFFF802E0</font><font size="-2"><li><b>CAN0_MB8</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB8_MMR">AT91C_CAN0_MB8_MMR</a></i> 0xFFF80300</font><font size="-2"><li><b>CAN0_MB9</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB9_MMR">AT91C_CAN0_MB9_MMR</a></i> 0xFFF80320</font><font size="-2"><li><b>CAN0_MB10</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB10_MMR">AT91C_CAN0_MB10_MMR</a></i> 0xFFF80340</font><font size="-2"><li><b>CAN0_MB11</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB11_MMR">AT91C_CAN0_MB11_MMR</a></i> 0xFFF80360</font><font size="-2"><li><b>CAN0_MB12</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB12_MMR">AT91C_CAN0_MB12_MMR</a></i> 0xFFF80380</font><font size="-2"><li><b>CAN0_MB13</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB13_MMR">AT91C_CAN0_MB13_MMR</a></i> 0xFFF803A0</font><font size="-2"><li><b>CAN0_MB14</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB14_MMR">AT91C_CAN0_MB14_MMR</a></i> 0xFFF803C0</font><font size="-2"><li><b>CAN0_MB15</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB15_MMR">AT91C_CAN0_MB15_MMR</a></i> 0xFFF803E0</font><font size="-2"><li><b>CAN1_MB0</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB0_MMR">AT91C_CAN1_MB0_MMR</a></i> 0xFFF84200</font><font size="-2"><li><b>CAN1_MB1</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB1_MMR">AT91C_CAN1_MB1_MMR</a></i> 0xFFF84220</font><font size="-2"><li><b>CAN1_MB2</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB2_MMR">AT91C_CAN1_MB2_MMR</a></i> 0xFFF84240</font><font size="-2"><li><b>CAN1_MB3</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB3_MMR">AT91C_CAN1_MB3_MMR</a></i> 0xFFF84260</font><font size="-2"><li><b>CAN1_MB4</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB4_MMR">AT91C_CAN1_MB4_MMR</a></i> 0xFFF84280</font><font size="-2"><li><b>CAN1_MB5</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB5_MMR">AT91C_CAN1_MB5_MMR</a></i> 0xFFF842A0</font><font size="-2"><li><b>CAN1_MB6</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB6_MMR">AT91C_CAN1_MB6_MMR</a></i> 0xFFF842C0</font><font size="-2"><li><b>CAN1_MB7</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB7_MMR">AT91C_CAN1_MB7_MMR</a></i> 0xFFF842E0</font><font size="-2"><li><b>CAN1_MB8</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB8_MMR">AT91C_CAN1_MB8_MMR</a></i> 0xFFF84300</font><font size="-2"><li><b>CAN1_MB9</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB9_MMR">AT91C_CAN1_MB9_MMR</a></i> 0xFFF84320</font><font size="-2"><li><b>CAN1_MB10</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB10_MMR">AT91C_CAN1_MB10_MMR</a></i> 0xFFF84340</font><font size="-2"><li><b>CAN1_MB11</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB11_MMR">AT91C_CAN1_MB11_MMR</a></i> 0xFFF84360</font><font size="-2"><li><b>CAN1_MB12</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB12_MMR">AT91C_CAN1_MB12_MMR</a></i> 0xFFF84380</font><font size="-2"><li><b>CAN1_MB13</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB13_MMR">AT91C_CAN1_MB13_MMR</a></i> 0xFFF843A0</font><font size="-2"><li><b>CAN1_MB14</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB14_MMR">AT91C_CAN1_MB14_MMR</a></i> 0xFFF843C0</font><font size="-2"><li><b>CAN1_MB15</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB15_MMR">AT91C_CAN1_MB15_MMR</a></i> 0xFFF843E0</font></null></ul><table border=1 cellpadding=0 cellspacing=0 width="100%"><null><th bgcolor="#FFFFCC"><b>Offset</b></th><th bgcolor="#FFFFCC"><b>Name</b></th><th bgcolor="#FFFFCC"><b>Description</b></th><tr><td align="CENTER" bgcolor="#FFFFCC">15..0</td><td align="CENTER"><a name="CAN_MTIMEMARK"></a><b>CAN_MTIMEMARK</b><font size="-2"><br><a href="AT91SAM7A3_h.html#AT91C_CAN_MTIMEMARK">AT91C_CAN_MTIMEMARK</a></font></td><td><b>Mailbox Timemark</b></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">19..16</td><td align="CENTER"><a name="CAN_PRIOR"></a><b>CAN_PRIOR</b><font size="-2"><br><a href="AT91SAM7A3_h.html#AT91C_CAN_PRIOR">AT91C_CAN_PRIOR</a></font></td><td><b>Mailbox Priority</b></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">26..24</td><td align="CENTER"><a name="CAN_MOT"></a><b>CAN_MOT</b><font size="-2"><br><a href="AT91SAM7A3_h.html#AT91C_CAN_MOT">AT91C_CAN_MOT</a></font></td><td><b>Mailbox Object Type</b><font size="-1"><table bgcolor="#E3F2FF" border=1 cellpadding=0 cellspacing=0 width="100%"><null><th><b>Value</b></th><th><b>Label</b></th><th><b>Description</b></th><tr><td align="CENTER">0</td><td align="CENTER"><a name="CAN_MOT_DIS"></a><b>CAN_MOT_DIS</b><font size="-1"><br><a href="AT91SAM7A3_h.html#AT91C_CAN_MOT_DIS">AT91C_CAN_MOT_DIS</a></font></td><td></td></tr>
<tr><td align="CENTER">1</td><td align="CENTER"><a name="CAN_MOT_RX"></a><b>CAN_MOT_RX</b><font size="-1"><br><a href="AT91SAM7A3_h.html#AT91C_CAN_MOT_RX">AT91C_CAN_MOT_RX</a></font></td><td></td></tr>
<tr><td align="CENTER">2</td><td align="CENTER"><a name="CAN_MOT_RXOVERWRITE"></a><b>CAN_MOT_RXOVERWRITE</b><font size="-1"><br><a href="AT91SAM7A3_h.html#AT91C_CAN_MOT_RXOVERWRITE">AT91C_CAN_MOT_RXOVERWRITE</a></font></td><td></td></tr>
<tr><td align="CENTER">3</td><td align="CENTER"><a name="CAN_MOT_TX"></a><b>CAN_MOT_TX</b><font size="-1"><br><a href="AT91SAM7A3_h.html#AT91C_CAN_MOT_TX">AT91C_CAN_MOT_TX</a></font></td><td></td></tr>
<tr><td align="CENTER">4</td><td align="CENTER"><a name="CAN_MOT_CONSUMER"></a><b>CAN_MOT_CONSUMER</b><font size="-1"><br><a href="AT91SAM7A3_h.html#AT91C_CAN_MOT_CONSUMER">AT91C_CAN_MOT_CONSUMER</a></font></td><td></td></tr>
<tr><td align="CENTER">5</td><td align="CENTER"><a name="CAN_MOT_PRODUCER"></a><b>CAN_MOT_PRODUCER</b><font size="-1"><br><a href="AT91SAM7A3_h.html#AT91C_CAN_MOT_PRODUCER">AT91C_CAN_MOT_PRODUCER</a></font></td><td></td></tr>
</null></table></font>
</td></tr>
</null></table>
<a name="CAN_MAM"></a><h4><a href="#CAN_MB">CAN_MB</a>: <i><a href="AT91SAM7A3_h.html#AT91_REG">AT91_REG</a></i> CAN_MAM  <i>MailBox Acceptance Mask Register</i></h4><ul><null><font size="-2"><li><b>CAN0_MB0</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB0_MAM">AT91C_CAN0_MB0_MAM</a></i> 0xFFF80204</font><font size="-2"><li><b>CAN0_MB1</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB1_MAM">AT91C_CAN0_MB1_MAM</a></i> 0xFFF80224</font><font size="-2"><li><b>CAN0_MB2</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB2_MAM">AT91C_CAN0_MB2_MAM</a></i> 0xFFF80244</font><font size="-2"><li><b>CAN0_MB3</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB3_MAM">AT91C_CAN0_MB3_MAM</a></i> 0xFFF80264</font><font size="-2"><li><b>CAN0_MB4</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB4_MAM">AT91C_CAN0_MB4_MAM</a></i> 0xFFF80284</font><font size="-2"><li><b>CAN0_MB5</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB5_MAM">AT91C_CAN0_MB5_MAM</a></i> 0xFFF802A4</font><font size="-2"><li><b>CAN0_MB6</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB6_MAM">AT91C_CAN0_MB6_MAM</a></i> 0xFFF802C4</font><font size="-2"><li><b>CAN0_MB7</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB7_MAM">AT91C_CAN0_MB7_MAM</a></i> 0xFFF802E4</font><font size="-2"><li><b>CAN0_MB8</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB8_MAM">AT91C_CAN0_MB8_MAM</a></i> 0xFFF80304</font><font size="-2"><li><b>CAN0_MB9</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB9_MAM">AT91C_CAN0_MB9_MAM</a></i> 0xFFF80324</font><font size="-2"><li><b>CAN0_MB10</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB10_MAM">AT91C_CAN0_MB10_MAM</a></i> 0xFFF80344</font><font size="-2"><li><b>CAN0_MB11</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB11_MAM">AT91C_CAN0_MB11_MAM</a></i> 0xFFF80364</font><font size="-2"><li><b>CAN0_MB12</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB12_MAM">AT91C_CAN0_MB12_MAM</a></i> 0xFFF80384</font><font size="-2"><li><b>CAN0_MB13</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB13_MAM">AT91C_CAN0_MB13_MAM</a></i> 0xFFF803A4</font><font size="-2"><li><b>CAN0_MB14</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB14_MAM">AT91C_CAN0_MB14_MAM</a></i> 0xFFF803C4</font><font size="-2"><li><b>CAN0_MB15</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN0_MB15_MAM">AT91C_CAN0_MB15_MAM</a></i> 0xFFF803E4</font><font size="-2"><li><b>CAN1_MB0</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB0_MAM">AT91C_CAN1_MB0_MAM</a></i> 0xFFF84204</font><font size="-2"><li><b>CAN1_MB1</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB1_MAM">AT91C_CAN1_MB1_MAM</a></i> 0xFFF84224</font><font size="-2"><li><b>CAN1_MB2</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB2_MAM">AT91C_CAN1_MB2_MAM</a></i> 0xFFF84244</font><font size="-2"><li><b>CAN1_MB3</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB3_MAM">AT91C_CAN1_MB3_MAM</a></i> 0xFFF84264</font><font size="-2"><li><b>CAN1_MB4</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB4_MAM">AT91C_CAN1_MB4_MAM</a></i> 0xFFF84284</font><font size="-2"><li><b>CAN1_MB5</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB5_MAM">AT91C_CAN1_MB5_MAM</a></i> 0xFFF842A4</font><font size="-2"><li><b>CAN1_MB6</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB6_MAM">AT91C_CAN1_MB6_MAM</a></i> 0xFFF842C4</font><font size="-2"><li><b>CAN1_MB7</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB7_MAM">AT91C_CAN1_MB7_MAM</a></i> 0xFFF842E4</font><font size="-2"><li><b>CAN1_MB8</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB8_MAM">AT91C_CAN1_MB8_MAM</a></i> 0xFFF84304</font><font size="-2"><li><b>CAN1_MB9</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB9_MAM">AT91C_CAN1_MB9_MAM</a></i> 0xFFF84324</font><font size="-2"><li><b>CAN1_MB10</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB10_MAM">AT91C_CAN1_MB10_MAM</a></i> 0xFFF84344</font><font size="-2"><li><b>CAN1_MB11</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB11_MAM">AT91C_CAN1_MB11_MAM</a></i> 0xFFF84364</font><font size="-2"><li><b>CAN1_MB12</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB12_MAM">AT91C_CAN1_MB12_MAM</a></i> 0xFFF84384</font><font size="-2"><li><b>CAN1_MB13</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB13_MAM">AT91C_CAN1_MB13_MAM</a></i> 0xFFF843A4</font><font size="-2"><li><b>CAN1_MB14</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB14_MAM">AT91C_CAN1_MB14_MAM</a></i> 0xFFF843C4</font><font size="-2"><li><b>CAN1_MB15</b> <i><a href="AT91SAM7A3_h.html#AT91C_CAN1_MB15_MAM">AT91C_CAN1_MB15_MAM</a></i> 0xFFF843E4</font></null></ul><br>MIDvB: Acceptance Mask for MIDvB.<br>MIDvA: Acceptance Mask for MIDvA.<br>MIDE: Acceptance Mask for MIDE.<table border=1 cellpadding=0 cellspacing=0 width="100%"><null><th bgcolor="#FFFFCC"><b>Offset</b></th><th bgcolor="#FFFFCC"><b>Name</b></th><th bgcolor="#FFFFCC"><b>Description</b></th><tr><td align="CENTER" bgcolor="#FFFFCC">17..0</td><td align="CENTER"><a name="CAN_MIDvB"></a><b>CAN_MIDvB</b><font size="-2"><br><a href="AT91SAM7A3_h.html#AT91C_CAN_MIDvB">AT91C_CAN_MIDvB</a></font></td><td><b>Complementary bits for identifier in extended mode</b></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">28..18</td><td align="CENTER"><a name="CAN_MIDvA"></a><b>CAN_MIDvA</b><font size="-2"><br><a href="AT91SAM7A3_h.html#AT91C_CAN_MIDvA">AT91C_CAN_MIDvA</a></font></td><td><b>Identifier for standard frame mode</b></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">29</td><td align="CENTER"><a name="CAN_MIDE"></a><b>CAN_MIDE</b><font size="-2"><br><a href="AT91SAM7A3_h.html#AT91C_CAN_MIDE">AT91C_CAN_MIDE</a></font></td><td><b>Identifier Version</b></td></tr>
</null></table>