2 * Copyright (c) 2016, Freescale Semiconductor, Inc.
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3 * Copyright 2016-2018 NXP
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4 * All rights reserved.
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6 * SPDX-License-Identifier: BSD-3-Clause
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10 #define _LPC_GPIO_H_
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12 #include "fsl_common.h"
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15 * @addtogroup lpc_gpio
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21 /*******************************************************************************
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23 ******************************************************************************/
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25 /*! @name Driver version */
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27 /*! @brief LPC GPIO driver version 2.1.3. */
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28 #define FSL_GPIO_DRIVER_VERSION (MAKE_VERSION(2, 1, 3))
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31 /*! @brief LPC GPIO direction definition */
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32 typedef enum _gpio_pin_direction
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34 kGPIO_DigitalInput = 0U, /*!< Set current pin as digital input*/
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35 kGPIO_DigitalOutput = 1U, /*!< Set current pin as digital output*/
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36 } gpio_pin_direction_t;
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39 * @brief The GPIO pin configuration structure.
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41 * Every pin can only be configured as either output pin or input pin at a time.
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42 * If configured as a input pin, then leave the outputConfig unused.
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44 typedef struct _gpio_pin_config
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46 gpio_pin_direction_t pinDirection; /*!< GPIO direction, input or output */
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47 /* Output configurations, please ignore if configured as a input one */
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48 uint8_t outputLogic; /*!< Set default output logic, no use in input */
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49 } gpio_pin_config_t;
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51 /*******************************************************************************
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53 ******************************************************************************/
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54 #if defined(__cplusplus)
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58 /*! @name GPIO Configuration */
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62 * @brief Initializes the GPIO peripheral.
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64 * This function ungates the GPIO clock.
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66 * @param base GPIO peripheral base pointer.
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67 * @param port GPIO port number.
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69 void GPIO_PortInit(GPIO_Type *base, uint32_t port);
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72 * @brief Initializes a GPIO pin used by the board.
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74 * To initialize the GPIO, define a pin configuration, either input or output, in the user file.
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75 * Then, call the GPIO_PinInit() function.
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77 * This is an example to define an input pin or output pin configuration:
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79 * // Define a digital input pin configuration,
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80 * gpio_pin_config_t config =
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82 * kGPIO_DigitalInput,
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85 * //Define a digital output pin configuration,
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86 * gpio_pin_config_t config =
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88 * kGPIO_DigitalOutput,
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93 * @param base GPIO peripheral base pointer(Typically GPIO)
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94 * @param port GPIO port number
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95 * @param pin GPIO pin number
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96 * @param config GPIO pin configuration pointer
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98 void GPIO_PinInit(GPIO_Type *base, uint32_t port, uint32_t pin, const gpio_pin_config_t *config);
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102 /*! @name GPIO Output Operations */
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106 * @brief Sets the output level of the one GPIO pin to the logic 1 or 0.
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108 * @param base GPIO peripheral base pointer(Typically GPIO)
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109 * @param port GPIO port number
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110 * @param pin GPIO pin number
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111 * @param output GPIO pin output logic level.
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112 * - 0: corresponding pin output low-logic level.
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113 * - 1: corresponding pin output high-logic level.
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115 static inline void GPIO_PinWrite(GPIO_Type *base, uint32_t port, uint32_t pin, uint8_t output)
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117 base->B[port][pin] = output;
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121 /*! @name GPIO Input Operations */
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125 * @brief Reads the current input value of the GPIO PIN.
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127 * @param base GPIO peripheral base pointer(Typically GPIO)
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128 * @param port GPIO port number
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129 * @param pin GPIO pin number
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130 * @retval GPIO port input value
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131 * - 0: corresponding pin input low-logic level.
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132 * - 1: corresponding pin input high-logic level.
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134 static inline uint32_t GPIO_PinRead(GPIO_Type *base, uint32_t port, uint32_t pin)
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136 return (uint32_t)base->B[port][pin];
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142 * @brief Sets the output level of the multiple GPIO pins to the logic 1.
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144 * @param base GPIO peripheral base pointer(Typically GPIO)
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145 * @param port GPIO port number
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146 * @param mask GPIO pin number macro
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148 static inline void GPIO_PortSet(GPIO_Type *base, uint32_t port, uint32_t mask)
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150 base->SET[port] = mask;
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154 * @brief Sets the output level of the multiple GPIO pins to the logic 0.
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156 * @param base GPIO peripheral base pointer(Typically GPIO)
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157 * @param port GPIO port number
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158 * @param mask GPIO pin number macro
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160 static inline void GPIO_PortClear(GPIO_Type *base, uint32_t port, uint32_t mask)
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162 base->CLR[port] = mask;
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166 * @brief Reverses current output logic of the multiple GPIO pins.
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168 * @param base GPIO peripheral base pointer(Typically GPIO)
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169 * @param port GPIO port number
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170 * @param mask GPIO pin number macro
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172 static inline void GPIO_PortToggle(GPIO_Type *base, uint32_t port, uint32_t mask)
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174 base->NOT[port] = mask;
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180 * @brief Reads the current input value of the whole GPIO port.
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182 * @param base GPIO peripheral base pointer(Typically GPIO)
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183 * @param port GPIO port number
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185 static inline uint32_t GPIO_PortRead(GPIO_Type *base, uint32_t port)
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187 return (uint32_t)base->PIN[port];
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191 /*! @name GPIO Mask Operations */
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195 * @brief Sets port mask, 0 - enable pin, 1 - disable pin.
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197 * @param base GPIO peripheral base pointer(Typically GPIO)
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198 * @param port GPIO port number
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199 * @param mask GPIO pin number macro
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201 static inline void GPIO_PortMaskedSet(GPIO_Type *base, uint32_t port, uint32_t mask)
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203 base->MASK[port] = mask;
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207 * @brief Sets the output level of the masked GPIO port. Only pins enabled by GPIO_SetPortMask() will be affected.
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209 * @param base GPIO peripheral base pointer(Typically GPIO)
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210 * @param port GPIO port number
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211 * @param output GPIO port output value.
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213 static inline void GPIO_PortMaskedWrite(GPIO_Type *base, uint32_t port, uint32_t output)
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215 base->MPIN[port] = output;
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219 * @brief Reads the current input value of the masked GPIO port. Only pins enabled by GPIO_SetPortMask() will be
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222 * @param base GPIO peripheral base pointer(Typically GPIO)
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223 * @param port GPIO port number
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224 * @retval masked GPIO port value
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226 static inline uint32_t GPIO_PortMaskedRead(GPIO_Type *base, uint32_t port)
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228 return (uint32_t)base->MPIN[port];
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233 #if defined(__cplusplus)
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241 #endif /* _LPC_GPIO_H_*/
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