rt-thread/bsp/nuvoton/libraries/m031/StdDriver/src/nu_gpio.c

109 lines
3.8 KiB
C

/**************************************************************************//**
* @file gpio.c
* @version V3.00
* $Revision: 2 $
* $Date: 18/03/28 5:52p $
* @brief M031 Series General Purpose I/O (GPIO) Driver Source File
*
* @note
* SPDX-License-Identifier: Apache-2.0
* Copyright (C) 2018 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
#include "M031Series.h"
/** @addtogroup Standard_Driver Standard Driver
@{
*/
/** @addtogroup GPIO_Driver GPIO Driver
@{
*/
/** @addtogroup GPIO_EXPORTED_FUNCTIONS GPIO Exported Functions
@{
*/
/**
* @brief Set GPIO operation mode
* @param[in] port GPIO port. It could be PA, PB, PC, PD, or PF.
* @param[in] u32PinMask The single or multiple pins of specified GPIO port.
* It could be BIT0 ~ BIT15 for PA and PB.
* It could be BIT0 ~ BIT7, and BIT14 for PC.
* It could be BIT0 ~ BIT3, and BIT15 for PD.
* It could be BIT0 ~ BIT6, BIT14, and BIT15 for PF.
* @param[in] u32Mode Operation mode. It could be
* - \ref GPIO_MODE_INPUT
* - \ref GPIO_MODE_OUTPUT
* - \ref GPIO_MODE_OPEN_DRAIN
* - \ref GPIO_MODE_QUASI
* @return None
* @details This function is used to set specified GPIO operation mode.
*/
void GPIO_SetMode(GPIO_T *port, uint32_t u32PinMask, uint32_t u32Mode)
{
uint32_t i;
for(i = 0; i < GPIO_PIN_MAX; i++)
{
if(u32PinMask & (1 << i))
{
port->MODE = (port->MODE & ~(GPIO_MODE_MODE0_Msk << (i << 1))) | (u32Mode << (i << 1));
}
}
}
/**
* @brief Enable GPIO interrupt
* @param[in] port GPIO port. It could be PA, PB, PC, PD, or PF.
* @param[in] u32Pin The pin of specified GPIO port.
* It could be 0 ~ 15 for PA and PB.
* It could be 0 ~ 7, and 14 for PC.
* It could be 0 ~ 3, and 15 for PD.
* It could be 0 ~ 6, 14, and 15 for PF.
* @param[in] u32IntAttribs The interrupt attribute of specified GPIO pin. It could be
* - \ref GPIO_INT_RISING
* - \ref GPIO_INT_FALLING
* - \ref GPIO_INT_BOTH_EDGE
* - \ref GPIO_INT_HIGH
* - \ref GPIO_INT_LOW
* @return None
* @details This function is used to enable specified GPIO pin interrupt.
*/
void GPIO_EnableInt(GPIO_T *port, uint32_t u32Pin, uint32_t u32IntAttribs)
{
/* Configure interrupt mode of specified pin */
port->INTTYPE |= (((u32IntAttribs >> 24) & 0xFFUL) << u32Pin);
/* Enable interrupt function of specified pin */
port->INTEN |= ((u32IntAttribs & 0xFFFFFFUL) << u32Pin);
}
/**
* @brief Disable GPIO interrupt
* @param[in] port GPIO port. It could be PA, PB, PC, PD, or PF.
* @param[in] u32Pin The pin of specified GPIO port.
* It could be 0 ~ 15 for PA and PB.
* It could be 0 ~ 7, and 14 for PC.
* It could be 0 ~ 3, and 15 for PD.
* It could be 0 ~ 6, 14, and 15 for PF.
* @return None
* @details This function is used to enable specified GPIO pin interrupt.
*/
void GPIO_DisableInt(GPIO_T *port, uint32_t u32Pin)
{
/* Configure interrupt mode of specified pin */
port->INTTYPE &= ~(1UL << u32Pin);
/* Disable interrupt function of specified pin */
port->INTEN &= ~((0x00010001UL) << u32Pin);
}
/*@}*/ /* end of group GPIO_EXPORTED_FUNCTIONS */
/*@}*/ /* end of group GPIO_Driver */
/*@}*/ /* end of group Standard_Driver */
/*** (C) COPYRIGHT 2018 Nuvoton Technology Corp. ***/