524 lines
25 KiB
HTML
524 lines
25 KiB
HTML
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 <span id="projectnumber">Rev. 0</span>
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<div class="title">GPIO Driver<div class="ingroups"><a class="el" href="group__gpio.html">GPIO: General-Purpose Input/Output Driver</a></div></div> </div>
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</div><!--header-->
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<div class="contents">
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<a name="details" id="details"></a><h2 class="groupheader">Overview</h2>
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<p>The KSDK provides a peripheral driver for the General-Purpose Input/Output (GPIO) module of Kinetis devices.</p>
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<h1><a class="anchor" id="GPIOTpyUC"></a>
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Typical use case</h1>
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<h2><a class="anchor" id="GPIOOutOps"></a>
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Output Operation</h2>
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<div class="fragment"><div class="line"><span class="comment">/* Output pin configuration */</span></div>
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<div class="line"><a class="code" href="group__gpio.html#structgpio__pin__config__t">gpio_pin_config_t</a> led_config =</div>
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<div class="line">{</div>
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<div class="line"> kGpioDigitalOutput,</div>
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<div class="line"> 1,</div>
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<div class="line">};</div>
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<div class="line"><span class="comment">/* Sets the configuration */</span></div>
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<div class="line"><a class="code" href="group__gpio__driver.html#ga0793a4e8cb6e746485012da3e487db53">GPIO_PinInit</a>(GPIO_LED, LED_PINNUM, &led_config);</div>
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</div><!-- fragment --><h2><a class="anchor" id="GPIOInOps"></a>
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Input Operation</h2>
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<div class="fragment"><div class="line"><span class="comment">/* Input pin configuration */</span></div>
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<div class="line"><a class="code" href="group__port.html#ga001584128ac80df3857c8df6cf5245ff">PORT_SetPinInterruptConfig</a>(BOARD_SW2_PORT, BOARD_SW2_GPIO_PIN, <a class="code" href="group__port.html#gga18b2add7e164a5dfa5c00832f857a1f6afe8f52eaca9af2ce2087a2991f50c463">kPORT_InterruptFallingEdge</a>);</div>
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<div class="line">NVIC_EnableIRQ(BOARD_SW2_IRQ);</div>
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<div class="line"><a class="code" href="group__gpio.html#structgpio__pin__config__t">gpio_pin_config_t</a> sw1_config =</div>
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<div class="line">{</div>
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<div class="line"> kGpioDigitalInput,</div>
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<div class="line"> 0,</div>
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<div class="line">};</div>
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<div class="line"><span class="comment">/* Sets the input pin configuration */</span></div>
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<div class="line"><a class="code" href="group__gpio__driver.html#ga0793a4e8cb6e746485012da3e487db53">GPIO_PinInit</a>(GPIO_SW1, SW1_PINNUM, &sw1_config);</div>
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</div><!-- fragment --> <table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="member-group"></a>
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GPIO Configuration</h2></td></tr>
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<tr class="memitem:ga0793a4e8cb6e746485012da3e487db53"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__gpio__driver.html#ga0793a4e8cb6e746485012da3e487db53">GPIO_PinInit</a> (GPIO_Type *base, uint32_t pin, const <a class="el" href="group__gpio.html#structgpio__pin__config__t">gpio_pin_config_t</a> *config)</td></tr>
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<tr class="memdesc:ga0793a4e8cb6e746485012da3e487db53"><td class="mdescLeft"> </td><td class="mdescRight">Initializes a GPIO pin used by the board. <a href="#ga0793a4e8cb6e746485012da3e487db53">More...</a><br/></td></tr>
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<tr class="separator:ga0793a4e8cb6e746485012da3e487db53"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="member-group"></a>
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GPIO Output Operations</h2></td></tr>
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<tr class="memitem:ga5677a2c3b14f5e9f034edbbd5b429c1d"><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__gpio__driver.html#ga5677a2c3b14f5e9f034edbbd5b429c1d">GPIO_WritePinOutput</a> (GPIO_Type *base, uint32_t pin, uint8_t output)</td></tr>
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<tr class="memdesc:ga5677a2c3b14f5e9f034edbbd5b429c1d"><td class="mdescLeft"> </td><td class="mdescRight">Sets the output level of the multiple GPIO pins to the logic 1 or 0. <a href="#ga5677a2c3b14f5e9f034edbbd5b429c1d">More...</a><br/></td></tr>
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<tr class="separator:ga5677a2c3b14f5e9f034edbbd5b429c1d"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga2f8a8be69355039abd8b1ddf2a236f4c"><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__gpio__driver.html#ga2f8a8be69355039abd8b1ddf2a236f4c">GPIO_SetPinsOutput</a> (GPIO_Type *base, uint32_t mask)</td></tr>
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<tr class="memdesc:ga2f8a8be69355039abd8b1ddf2a236f4c"><td class="mdescLeft"> </td><td class="mdescRight">Sets the output level of the multiple GPIO pins to the logic 1. <a href="#ga2f8a8be69355039abd8b1ddf2a236f4c">More...</a><br/></td></tr>
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<tr class="separator:ga2f8a8be69355039abd8b1ddf2a236f4c"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga3ac4a7dccb5285b2926f152c3ff12af9"><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__gpio__driver.html#ga3ac4a7dccb5285b2926f152c3ff12af9">GPIO_ClearPinsOutput</a> (GPIO_Type *base, uint32_t mask)</td></tr>
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<tr class="memdesc:ga3ac4a7dccb5285b2926f152c3ff12af9"><td class="mdescLeft"> </td><td class="mdescRight">Sets the output level of the multiple GPIO pins to the logic 0. <a href="#ga3ac4a7dccb5285b2926f152c3ff12af9">More...</a><br/></td></tr>
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<tr class="separator:ga3ac4a7dccb5285b2926f152c3ff12af9"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga2d7bb4c2c2e1eb3b455451beeb42717e"><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__gpio__driver.html#ga2d7bb4c2c2e1eb3b455451beeb42717e">GPIO_TogglePinsOutput</a> (GPIO_Type *base, uint32_t mask)</td></tr>
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<tr class="memdesc:ga2d7bb4c2c2e1eb3b455451beeb42717e"><td class="mdescLeft"> </td><td class="mdescRight">Reverses current output logic of the multiple GPIO pins. <a href="#ga2d7bb4c2c2e1eb3b455451beeb42717e">More...</a><br/></td></tr>
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<tr class="separator:ga2d7bb4c2c2e1eb3b455451beeb42717e"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="member-group"></a>
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GPIO Input Operations</h2></td></tr>
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<tr class="memitem:gaf8d77b6a1daf18087dbc6c0814b2ed97"><td class="memItemLeft" align="right" valign="top">static uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__gpio__driver.html#gaf8d77b6a1daf18087dbc6c0814b2ed97">GPIO_ReadPinInput</a> (GPIO_Type *base, uint32_t pin)</td></tr>
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<tr class="memdesc:gaf8d77b6a1daf18087dbc6c0814b2ed97"><td class="mdescLeft"> </td><td class="mdescRight">Reads the current input value of the whole GPIO port. <a href="#gaf8d77b6a1daf18087dbc6c0814b2ed97">More...</a><br/></td></tr>
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<tr class="separator:gaf8d77b6a1daf18087dbc6c0814b2ed97"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="member-group"></a>
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GPIO Interrupt</h2></td></tr>
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<tr class="memitem:ga911ee36033873e98cb47f19be77c130a"><td class="memItemLeft" align="right" valign="top">uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__gpio__driver.html#ga911ee36033873e98cb47f19be77c130a">GPIO_GetPinsInterruptFlags</a> (GPIO_Type *base)</td></tr>
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<tr class="memdesc:ga911ee36033873e98cb47f19be77c130a"><td class="mdescLeft"> </td><td class="mdescRight">Reads whole GPIO port interrupt status flag. <a href="#ga911ee36033873e98cb47f19be77c130a">More...</a><br/></td></tr>
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<tr class="separator:ga911ee36033873e98cb47f19be77c130a"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gaad7f69cb09309c9dcd71acd30563a30d"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__gpio__driver.html#gaad7f69cb09309c9dcd71acd30563a30d">GPIO_ClearPinsInterruptFlags</a> (GPIO_Type *base, uint32_t mask)</td></tr>
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<tr class="memdesc:gaad7f69cb09309c9dcd71acd30563a30d"><td class="mdescLeft"> </td><td class="mdescRight">Clears multiple GPIO pin interrupt status flag. <a href="#gaad7f69cb09309c9dcd71acd30563a30d">More...</a><br/></td></tr>
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<tr class="separator:gaad7f69cb09309c9dcd71acd30563a30d"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<h2 class="groupheader">Function Documentation</h2>
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<a class="anchor" id="ga0793a4e8cb6e746485012da3e487db53"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void GPIO_PinInit </td>
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<td>(</td>
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<td class="paramtype">GPIO_Type * </td>
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<td class="paramname"><em>base</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>pin</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const <a class="el" href="group__gpio.html#structgpio__pin__config__t">gpio_pin_config_t</a> * </td>
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<td class="paramname"><em>config</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>To initialize the GPIO, define a pin configuration, either input or output, in the user file. Then, call the <a class="el" href="group__gpio__driver.html#ga0793a4e8cb6e746485012da3e487db53" title="Initializes a GPIO pin used by the board. ">GPIO_PinInit()</a> function.</p>
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<p>This is an example to define an input pin or output pin configuration: </p>
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<div class="fragment"><div class="line">* <span class="comment">// Define a digital input pin configuration,</span></div>
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<div class="line">* <a class="code" href="group__gpio.html#structgpio__pin__config__t">gpio_pin_config_t</a> config =</div>
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<div class="line">* {</div>
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<div class="line">* <a class="code" href="group__gpio.html#ggada41ca0a2ce239fe125ee96833e715c0abacf19933be1940ab40c83535e6a46d4">kGPIO_DigitalInput</a>,</div>
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<div class="line">* 0,</div>
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<div class="line">* }</div>
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<div class="line">* <span class="comment">//Define a digital output pin configuration,</span></div>
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<div class="line">* <a class="code" href="group__gpio.html#structgpio__pin__config__t">gpio_pin_config_t</a> config =</div>
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<div class="line">* {</div>
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<div class="line">* <a class="code" href="group__gpio.html#ggada41ca0a2ce239fe125ee96833e715c0a509ebcd228fc813cf4afcacd258680f9">kGPIO_DigitalOutput</a>,</div>
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<div class="line">* 0,</div>
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<div class="line">* }</div>
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<div class="line">* </div>
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</div><!-- fragment --><dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">base</td><td>GPIO peripheral base pointer(GPIOA, GPIOB, GPIOC, and so on.) </td></tr>
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<tr><td class="paramname">pin</td><td>GPIO port pin number </td></tr>
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<tr><td class="paramname">config</td><td>GPIO pin configuration pointer </td></tr>
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</table>
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</dd>
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</dl>
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</div>
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</div>
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<a class="anchor" id="ga5677a2c3b14f5e9f034edbbd5b429c1d"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="mlabels">
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<tr>
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<td class="mlabels-left">
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<table class="memname">
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<tr>
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<td class="memname">static void GPIO_WritePinOutput </td>
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<td>(</td>
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<td class="paramtype">GPIO_Type * </td>
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<td class="paramname"><em>base</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>pin</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint8_t </td>
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<td class="paramname"><em>output</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</td>
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<td class="mlabels-right">
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<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
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</tr>
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</table>
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</div><div class="memdoc">
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">base</td><td>GPIO peripheral base pointer(GPIOA, GPIOB, GPIOC, and so on.) </td></tr>
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<tr><td class="paramname">pin</td><td>GPIO pin number </td></tr>
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<tr><td class="paramname">output</td><td>GPIO pin output logic level.<ul>
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<li>0: corresponding pin output low-logic level.</li>
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<li>1: corresponding pin output high-logic level. </li>
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</ul>
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</td></tr>
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</table>
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</dd>
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</dl>
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</div>
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</div>
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<a class="anchor" id="ga2f8a8be69355039abd8b1ddf2a236f4c"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="mlabels">
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<tr>
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<td class="mlabels-left">
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<table class="memname">
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<tr>
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<td class="memname">static void GPIO_SetPinsOutput </td>
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<td>(</td>
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<td class="paramtype">GPIO_Type * </td>
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<td class="paramname"><em>base</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>mask</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</td>
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<td class="mlabels-right">
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<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
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</tr>
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</table>
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</div><div class="memdoc">
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">base</td><td>GPIO peripheral base pointer(GPIOA, GPIOB, GPIOC, and so on.) </td></tr>
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<tr><td class="paramname">mask</td><td>GPIO pin number macro </td></tr>
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</table>
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</dd>
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</dl>
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</div>
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</div>
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<a class="anchor" id="ga3ac4a7dccb5285b2926f152c3ff12af9"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="mlabels">
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<tr>
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<td class="mlabels-left">
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<table class="memname">
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<tr>
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<td class="memname">static void GPIO_ClearPinsOutput </td>
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<td>(</td>
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<td class="paramtype">GPIO_Type * </td>
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<td class="paramname"><em>base</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>mask</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</td>
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<td class="mlabels-right">
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<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
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</tr>
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</table>
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</div><div class="memdoc">
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">base</td><td>GPIO peripheral base pointer(GPIOA, GPIOB, GPIOC, and so on.) </td></tr>
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<tr><td class="paramname">mask</td><td>GPIO pin number macro </td></tr>
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</table>
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</dd>
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</dl>
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</div>
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</div>
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<a class="anchor" id="ga2d7bb4c2c2e1eb3b455451beeb42717e"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="mlabels">
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<tr>
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<td class="mlabels-left">
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<table class="memname">
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<tr>
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<td class="memname">static void GPIO_TogglePinsOutput </td>
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<td>(</td>
|
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<td class="paramtype">GPIO_Type * </td>
|
|
<td class="paramname"><em>base</em>, </td>
|
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</tr>
|
|
<tr>
|
|
<td class="paramkey"></td>
|
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<td></td>
|
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<td class="paramtype">uint32_t </td>
|
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<td class="paramname"><em>mask</em> </td>
|
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</tr>
|
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</td>
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<td class="mlabels-right">
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<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
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</tr>
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</table>
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</div><div class="memdoc">
|
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<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">base</td><td>GPIO peripheral base pointer(GPIOA, GPIOB, GPIOC, and so on.) </td></tr>
|
|
<tr><td class="paramname">mask</td><td>GPIO pin number macro </td></tr>
|
|
</table>
|
|
</dd>
|
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</dl>
|
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</div>
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</div>
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<a class="anchor" id="gaf8d77b6a1daf18087dbc6c0814b2ed97"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="mlabels">
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<tr>
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<td class="mlabels-left">
|
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<table class="memname">
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<tr>
|
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<td class="memname">static uint32_t GPIO_ReadPinInput </td>
|
|
<td>(</td>
|
|
<td class="paramtype">GPIO_Type * </td>
|
|
<td class="paramname"><em>base</em>, </td>
|
|
</tr>
|
|
<tr>
|
|
<td class="paramkey"></td>
|
|
<td></td>
|
|
<td class="paramtype">uint32_t </td>
|
|
<td class="paramname"><em>pin</em> </td>
|
|
</tr>
|
|
<tr>
|
|
<td></td>
|
|
<td>)</td>
|
|
<td></td><td></td>
|
|
</tr>
|
|
</table>
|
|
</td>
|
|
<td class="mlabels-right">
|
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<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
|
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</tr>
|
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</table>
|
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</div><div class="memdoc">
|
|
<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">base</td><td>GPIO peripheral base pointer(GPIOA, GPIOB, GPIOC, and so on.) </td></tr>
|
|
<tr><td class="paramname">pin</td><td>GPIO pin number </td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
|
<dl class="retval"><dt>Return values</dt><dd>
|
|
<table class="retval">
|
|
<tr><td class="paramname">GPIO</td><td>port input value<ul>
|
|
<li>0: corresponding pin input low-logic level.</li>
|
|
<li>1: corresponding pin input high-logic level. </li>
|
|
</ul>
|
|
</td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
|
|
|
</div>
|
|
</div>
|
|
<a class="anchor" id="ga911ee36033873e98cb47f19be77c130a"></a>
|
|
<div class="memitem">
|
|
<div class="memproto">
|
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<table class="memname">
|
|
<tr>
|
|
<td class="memname">uint32_t GPIO_GetPinsInterruptFlags </td>
|
|
<td>(</td>
|
|
<td class="paramtype">GPIO_Type * </td>
|
|
<td class="paramname"><em>base</em></td><td>)</td>
|
|
<td></td>
|
|
</tr>
|
|
</table>
|
|
</div><div class="memdoc">
|
|
<p>If a pin is configured to generate the DMA request, the corresponding flag is cleared automatically at the completion of the requested DMA transfer. Otherwise, the flag remains set until a logic one is written to that flag. If configured for a level sensitive interrupt that remains asserted, the flag is set again immediately.</p>
|
|
<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">base</td><td>GPIO peripheral base pointer(GPIOA, GPIOB, GPIOC, and so on.) </td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
|
<dl class="retval"><dt>Return values</dt><dd>
|
|
<table class="retval">
|
|
<tr><td class="paramname">Current</td><td>GPIO port interrupt status flag, for example, 0x00010001 means the pin 0 and 17 have the interrupt. </td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
|
|
|
</div>
|
|
</div>
|
|
<a class="anchor" id="gaad7f69cb09309c9dcd71acd30563a30d"></a>
|
|
<div class="memitem">
|
|
<div class="memproto">
|
|
<table class="memname">
|
|
<tr>
|
|
<td class="memname">void GPIO_ClearPinsInterruptFlags </td>
|
|
<td>(</td>
|
|
<td class="paramtype">GPIO_Type * </td>
|
|
<td class="paramname"><em>base</em>, </td>
|
|
</tr>
|
|
<tr>
|
|
<td class="paramkey"></td>
|
|
<td></td>
|
|
<td class="paramtype">uint32_t </td>
|
|
<td class="paramname"><em>mask</em> </td>
|
|
</tr>
|
|
<tr>
|
|
<td></td>
|
|
<td>)</td>
|
|
<td></td><td></td>
|
|
</tr>
|
|
</table>
|
|
</div><div class="memdoc">
|
|
<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">base</td><td>GPIO peripheral base pointer(GPIOA, GPIOB, GPIOC, and so on.) </td></tr>
|
|
<tr><td class="paramname">mask</td><td>GPIO pin number macro </td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
|
|
|
</div>
|
|
</div>
|
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</div><!-- contents -->
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</div><!-- doc-content -->
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