93 lines
2.6 KiB
C
93 lines
2.6 KiB
C
/**************************************************************************//**
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* @file gpio.c
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* @version V3.00
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* $Revision: 4 $
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* $Date: 14/01/28 10:49a $
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* @brief M051 series GPIO driver source file
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*
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* @note
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* Copyright (C) 2013 Nuvoton Technology Corp. All rights reserved.
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*****************************************************************************/
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#include "M051Series.h"
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/** @addtogroup M051_Device_Driver M051 Device Driver
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@{
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*/
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/** @addtogroup M051_GPIO_Driver GPIO Driver
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@{
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*/
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/** @addtogroup M051_GPIO_EXPORTED_FUNCTIONS GPIO Exported Functions
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@{
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*/
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/**
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* @brief Set GPIO operation mode
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*
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* @param[in] port GPIO port. It could be P0, P1, P2, P3 or P4.
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* @param[in] u32PinMask The single or multiple pins of specified GPIO port. It could be BIT0 ~ BIT7.
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* @param[in] u32Mode Operation mode. GPIO_PMD_INPUT, GPIO_PMD_OUTPUT, GPIO_PMD_OPEN_DRAIN, GPIO_PMD_QUASI
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*
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* @return None
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*
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* @details This function is used to set specified GPIO operation mode.
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*/
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void GPIO_SetMode(GPIO_T *port, uint32_t u32PinMask, uint32_t u32Mode)
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{
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uint32_t i;
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for(i = 0; i < GPIO_PIN_MAX; i++)
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{
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if(u32PinMask & (1 << i))
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{
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port->PMD = (port->PMD & ~(0x3 << (i << 1))) | (u32Mode << (i << 1));
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}
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}
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}
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/**
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* @brief Enable GPIO interrupt
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*
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* @param[in] port GPIO port. It could be P0, P1, P2, P3 or P4.
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* @param[in] u32Pin The pin of specified GPIO port. It could be 0 ~ 7.
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* @param[in] u32IntAttribs The interrupt attribute of specified GPIO pin. It could be \n
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* GPIO_INT_RISING, GPIO_INT_FALLING, GPIO_INT_BOTH_EDGE, GPIO_INT_HIGH, GPIO_INT_LOW.
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*
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* @return None
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*
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* @details This function is used to enable specified GPIO pin interrupt.
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*/
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void GPIO_EnableInt(GPIO_T *port, uint32_t u32Pin, uint32_t u32IntAttribs)
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{
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port->IMD |= (((u32IntAttribs >> 24) & 0xFFUL) << u32Pin);
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port->IEN |= ((u32IntAttribs & 0xFFFFFFUL) << u32Pin);
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}
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/**
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* @brief Disable GPIO interrupt
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*
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* @param[in] port GPIO port. It could be P0, P1, P2, P3 or P4.
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* @param[in] u32Pin The pin of specified GPIO port. It could be 0 ~ 7.
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*
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* @return None
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*
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* @details This function is used to enable specified GPIO pin interrupt.
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*/
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void GPIO_DisableInt(GPIO_T *port, uint32_t u32Pin)
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{
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port->IMD &= ~(1UL << u32Pin);
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port->IEN &= ~((0x00010001UL) << u32Pin);
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}
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/*@}*/ /* end of group M051_GPIO_EXPORTED_FUNCTIONS */
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/*@}*/ /* end of group M051_GPIO_Driver */
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/*@}*/ /* end of group M051_Device_Driver */
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/*** (C) COPYRIGHT 2013 Nuvoton Technology Corp. ***/
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