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 <h1>serial.h File Reference</h1>Contains declarations for serial input and output. <a href="#_details">More...</a>
 <p>
 
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 <tr><td class="memItemLeft" nowrap align="right" valign="top">int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__usb.html#gcd371dedbff10f0c52dca4b3b7af9e3d">usb_puti</a> (int value)</td></tr>
 
 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Print an integer to USB.  <a href="group__usb.html#gcd371dedbff10f0c52dca4b3b7af9e3d"></a><br></td></tr>
+<tr><td class="memItemLeft" nowrap align="right" valign="top">uint8_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__usb.html#g94d47853c33da12c71dec155f819cfeb">hex_digit</a> (uint8_t value)</td></tr>
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+<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Determine a hexadecimal digit.  <a href="group__usb.html#g94d47853c33da12c71dec155f819cfeb"></a><br></td></tr>
+<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__usb.html#g8e7e31f1e45721ac032267b13d0f759b">usb_puth16</a> (uint16_t value)</td></tr>
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+<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Print a fixed width hexadecimal representation to USB.  <a href="group__usb.html#g8e7e31f1e45721ac032267b13d0f759b"></a><br></td></tr>
+<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__usb.html#g21462df541911e0611416e85be6ea34d">usb_puth8</a> (uint8_t value)</td></tr>
+
+<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Print a fixed width hexadecimal representation to USB.  <a href="group__usb.html#g21462df541911e0611416e85be6ea34d"></a><br></td></tr>
 <tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__xbee.html#g964a1e8461e9c1187e5d69f521e5e107">xbee_init</a> (void)</td></tr>
 
 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Initialize the XBee.  <a href="group__xbee.html#g964a1e8461e9c1187e5d69f521e5e107"></a><br></td></tr>
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 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.<p>
 Contains definitions for serial input and output.<p>
 <dl class="author" compact><dt><b>Author:</b></dt><dd>Colony Project, CMU Robotics Club Based on Tom Lauwer's Firefly Library </dd></dl>
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