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| <div class="section" id="fcb-append"> |
| <h1>fcb_append<a class="headerlink" href="#fcb-append" title="Permalink to this headline">¶</a></h1> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="go">int fcb_append(struct fcb *fcb, uint16_t len, struct fcb_entry *append_loc);</span> |
| </pre></div> |
| </div> |
| <p>Start writing a new element to flash. This routine reserves the space in |
| the flash by writing out the element header.</p> |
| <p>When writing the contents for the entry, use append_loc->fl_area and |
| append_loc->fl_data_off as arguments to flash_area_write(). When |
| finished, call fcb_append_finish() with append_loc as argument.</p> |
| <div class="section" id="arguments"> |
| <h2>Arguments<a class="headerlink" href="#arguments" title="Permalink to this headline">¶</a></h2> |
| <table class="docutils align-default"> |
| <colgroup> |
| <col style="width: 47%" /> |
| <col style="width: 53%" /> |
| </colgroup> |
| <thead> |
| <tr class="row-odd"><th class="head"><p>Arguments</p></th> |
| <th class="head"><p>Description</p></th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr class="row-even"><td><p>fcb</p></td> |
| <td><p>Points to FCB |
| where data is |
| written to.</p></td> |
| </tr> |
| <tr class="row-odd"><td><p>len</p></td> |
| <td><p>Number of |
| bytes to |
| reserve for |
| the element.</p></td> |
| </tr> |
| <tr class="row-even"><td><p>loc</p></td> |
| <td><p>Pointer to |
| fcb_entry. |
| fcb_append() |
| will fill this |
| with info |
| about where |
| the element |
| can be written |
| to.</p></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| <div class="section" id="returned-values"> |
| <h2>Returned values<a class="headerlink" href="#returned-values" title="Permalink to this headline">¶</a></h2> |
| <p>Returns 0 on success; nonzero on failure. FCB_ERR_NOSPACE is returned |
| if FCB is full.</p> |
| </div> |
| <div class="section" id="notes"> |
| <h2>Notes<a class="headerlink" href="#notes" title="Permalink to this headline">¶</a></h2> |
| <p>If FCB is full, you need to make more space. This can be done by calling |
| fcb_rotate(). Or if you’ve reserved scratch sectors, you can take those |
| into use by calling fcb_append_to_scratch().</p> |
| </div> |
| <div class="section" id="example"> |
| <h2>Example<a class="headerlink" href="#example" title="Permalink to this headline">¶</a></h2> |
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