541 lines
19 KiB
C
541 lines
19 KiB
C
|
/**********************************************************************
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|
* $Id$ lpc_pinsel.c 2011-06-02
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*//**
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* @file lpc_pinsel.c
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* @brief Contains all functions support for Pin-connection block
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* firmware library on LPC
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* @version 1.0
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* @date 02. June. 2011
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* @author NXP MCU SW Application Team
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*
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* Copyright(C) 2011, NXP Semiconductor
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* All rights reserved.
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*
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***********************************************************************
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* Software that is described herein is for illustrative purposes only
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* which provides customers with programming information regarding the
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* products. This software is supplied "AS IS" without any warranties.
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* NXP Semiconductors assumes no responsibility or liability for the
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* use of the software, conveys no license or title under any patent,
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* copyright, or mask work right to the product. NXP Semiconductors
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* reserves the right to make changes in the software without
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* notification. NXP Semiconductors also make no representation or
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* warranty that such application will be suitable for the specified
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* use without further testing or modification.
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* Permission to use, copy, modify, and distribute this software and its
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* documentation is hereby granted, under NXP Semiconductors'
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* relevant copyright in the software, without fee, provided that it
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* is used in conjunction with NXP Semiconductors microcontrollers. This
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* copyright, permission, and disclaimer notice must appear in all copies of
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* this code.
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**********************************************************************/
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/* Peripheral group ----------------------------------------------------------- */
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/** @addtogroup PINSEL
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* @{
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*/
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#ifdef __BUILD_WITH_EXAMPLE__
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#include "lpc_libcfg.h"
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#else
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#include "lpc_libcfg_default.h"
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#endif /* __BUILD_WITH_EXAMPLE__ */
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#ifdef _PINSEL
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/* Includes ------------------------------------------------------------------- */
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#include "lpc_pinsel.h"
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/* Private Functions ---------------------------------------------------------- */
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/*********************************************************************//**
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* @brief Get pointer to GPIO peripheral due to GPIO port
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* @param[in] portnum Port Number value, should be in range from 0..3.
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* @param[in] pinnum Pin number value, should be in range from 0..31
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* @return Pointer to GPIO peripheral
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**********************************************************************/
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static uint32_t * PIN_GetPointer(uint8_t portnum, uint8_t pinnum)
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{
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uint32_t *pPIN = NULL;
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pPIN = (uint32_t *)(LPC_IOCON_BASE + ((portnum * 32 + pinnum)*sizeof(uint32_t)));
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return pPIN;
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}
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/* Public Functions ----------------------------------------------------------- */
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/** @addtogroup PINSEL_Public_Functions
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* @{
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*/
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/*********************************************************************//**
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* @brief Get type of a pin.
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* @param[in] portnum PORT number, should be in range: 0..3
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* @param[in] pinnum Pin number, should be in range: 0..31
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* @return Port type:
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* - PINSEL_PIN_TYPE_D
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* - PINSEL_PIN_TYPE_A
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* - PINSEL_PIN_TYPE_I
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* - PINSEL_PIN_TYPE_W
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* - PINSEL_PIN_TYPE_U
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* - PINSEL_PIN_TYPE_UNKNOWN: Invalid pin
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**********************************************************************/
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PinSel_PinType PINSEL_GetPinType(uint8_t portnum, uint8_t pinnum)
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{
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PinSel_PinType Ret = PINSEL_PIN_TYPE_UNKNOWN;
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switch(portnum)
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{
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case 0:
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if((pinnum <=6)||
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((pinnum >= 10)&&(pinnum <=11))||
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((pinnum >= 14)&&(pinnum <=22)))
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Ret = PINSEL_PIN_TYPE_D;
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else if ((pinnum == 12)||(pinnum==13)||
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((pinnum >= 23)&&(pinnum <=26)))
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Ret = PINSEL_PIN_TYPE_A;
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else if ((pinnum == 29) || (pinnum==30)|| (pinnum==31))
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Ret = PINSEL_PIN_TYPE_U;
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else if ((pinnum == 27) || (pinnum==28))
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Ret = PINSEL_PIN_TYPE_I;
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else if ((pinnum == 7) || (pinnum==8)|| (pinnum==9))
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Ret = PINSEL_PIN_TYPE_W;
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break;
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case 1:
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if(pinnum <=29)
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Ret = PINSEL_PIN_TYPE_D;
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else if ((pinnum == 30) || (pinnum==31))
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Ret = PINSEL_PIN_TYPE_A;
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break;
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case 2:
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case 3:
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case 4:
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Ret = PINSEL_PIN_TYPE_D;
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break;
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case 5:
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if((pinnum <=1)||
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(pinnum == 4))
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Ret = PINSEL_PIN_TYPE_D;
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else if ((pinnum == 2) || (pinnum==3))
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Ret = PINSEL_PIN_TYPE_I;
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break;
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default:
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break;
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}
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return Ret;
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}
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/*********************************************************************//**
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* @brief Setup the pin selection function
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* @param[in] portnum PORT number, should be in range: 0..3
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* @param[in] pinnum Pin number, should be in range: 0..31
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* @param[in] funcnum Function number, should be range: 0..7
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* - 0: Select GPIO (Default)
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* - 1: Selects the 1st alternate function
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* - 2: Selects the 2nd alternate function
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* ...
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* - 7: Selects the 7th alternate function
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* @return PINSEL Return Code
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* - PINSEL_RET_INVALID_PIN
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* - PINSEL_RET_OK
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**********************************************************************/
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PINSEL_RET_CODE PINSEL_ConfigPin ( uint8_t portnum, uint8_t pinnum, uint8_t funcnum)
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{
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uint32_t *pPIN = NULL;
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PinSel_PinType type = PINSEL_GetPinType(portnum,pinnum);
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if(type == PINSEL_PIN_TYPE_UNKNOWN)
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return PINSEL_RET_INVALID_PIN;
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pPIN = PIN_GetPointer(portnum, pinnum);
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*pPIN &= ~IOCON_FUNC_MASK;//Clear function bits
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*pPIN |= funcnum&IOCON_FUNC_MASK;
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return PINSEL_RET_OK;
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}
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/*********************************************************************//**
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* @brief Setup resistor mode for pin of type D,A,W
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* @param[in] portnum PORT number, should be in range: 0..3
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* @param[in] pinnum Pin number, should be in range: 0..31
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* @param[in] modenum: Mode number, should be in range: 0..3
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- PINSEL_BASICMODE_PLAINOUT: Plain output
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- PINSEL_BASICMODE_PULLDOWN: Pull-down enable
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- PINSEL_BASICMODE_PULLUP: Pull-up enable
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- PINSEL_BASICMODE_REPEATER: Repeater mode
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* @return PINSEL Return Code
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* - PINSEL_RET_INVALID_PIN
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* - PINSEL_RET_NOT_SUPPORT
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* - PINSEL_RET_OK
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**********************************************************************/
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PINSEL_RET_CODE PINSEL_SetPinMode ( uint8_t portnum, uint8_t pinnum, PinSel_BasicMode modenum)
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{
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uint32_t *pPIN = NULL;
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PinSel_PinType type = PINSEL_GetPinType(portnum,pinnum);
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if(type == PINSEL_PIN_TYPE_UNKNOWN)
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return PINSEL_RET_INVALID_PIN;
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if((type != PINSEL_PIN_TYPE_D )&&
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(type != PINSEL_PIN_TYPE_A )&&
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(type != PINSEL_PIN_TYPE_W))
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return PINSEL_RET_NOT_SUPPORT;
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pPIN = PIN_GetPointer(portnum, pinnum);
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*(uint32_t *)pPIN &= ~(IOCON_MODE_MASK);//Clear function bits
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*(uint32_t *)pPIN |= (modenum << IOCON_MODE_POS)&IOCON_MODE_MASK;
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return PINSEL_RET_OK;
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}
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/*********************************************************************//**
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* @brief Setup hysteresis for pin of type D, W
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* @param[in] portnum Port number, should be in range: 0..3
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* @param[in] pinnum Pin number, should be in range: 0..31
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* @param[in] NewState new state of Hysteresis mode, should be:
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* - ENABLE: Hysteresis enable
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* - DISABLE: Hysteresis disable
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* @return PINSEL Return Code
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* - PINSEL_RET_INVALID_PIN
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* - PINSEL_RET_NOT_SUPPORT
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* - PINSEL_RET_OK
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**********************************************************************/
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PINSEL_RET_CODE PINSEL_SetHysMode(uint8_t portnum, uint8_t pinnum, FunctionalState NewState)
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{
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uint32_t *pPIN = NULL;
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PinSel_PinType type = PINSEL_GetPinType(portnum,pinnum);
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if(type == PINSEL_PIN_TYPE_UNKNOWN)
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return PINSEL_RET_INVALID_PIN;
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if((type != PINSEL_PIN_TYPE_D )&&
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(type != PINSEL_PIN_TYPE_W))
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return PINSEL_RET_NOT_SUPPORT;
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pPIN = PIN_GetPointer(portnum, pinnum);
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if(NewState == DISABLE)
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{
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*(uint32_t *)pPIN &= ~IOCON_HYS_ENABLE;//Clear hys bits
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}
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else
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*(uint32_t *)pPIN |= IOCON_HYS_ENABLE;
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return PINSEL_RET_OK;
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}
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/*********************************************************************//**
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* @brief Setup input polarity for pin of type A,I,D,W
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* @param[in] portnum Port number, should be in range: 0..3
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* @param[in] pinnum Pin number, should be in range: 0..31
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* @param[in] NewState new state of Invert mode, should be:
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* - ENABLE: Input is inverted.
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* - DISABLE: Input isn't inverted.
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* @return PINSEL Return Code
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* - PINSEL_RET_INVALID_PIN
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* - PINSEL_RET_NOT_SUPPORT
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* - PINSEL_RET_OK
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**********************************************************************/
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PINSEL_RET_CODE PINSEL_SetInvertInput(uint8_t portnum, uint8_t pinnum, FunctionalState NewState)
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{
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uint32_t *pPIN = NULL;
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PinSel_PinType type = PINSEL_GetPinType(portnum,pinnum);
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if(type == PINSEL_PIN_TYPE_UNKNOWN)
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return PINSEL_RET_INVALID_PIN;
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if(type== PINSEL_PIN_TYPE_U)
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return PINSEL_RET_NOT_SUPPORT;
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pPIN = PIN_GetPointer(portnum, pinnum);
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if(NewState == DISABLE)
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{
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*(uint32_t *)pPIN &= ~IOCON_INVERT_INPUT;//Clear hys bits
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}
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else
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*(uint32_t *)pPIN |= IOCON_INVERT_INPUT;
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return PINSEL_RET_OK;
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}
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/*********************************************************************//**
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* @brief Setup Slew rate for pin of type D,W
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* @param[in] portnum Port number, should be in range: 0..3
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* @param[in] pinnum Pin number, should be in range: 0..31
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* @param[in] NewState new state of Slew rate control, should be:
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* - ENABLE: Output slew rate control is enable
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* - DISABLE: Output slew rate control is disable
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* @return PINSEL Return Code
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* - PINSEL_RET_INVALID_PIN
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* - PINSEL_RET_NOT_SUPPORT
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* - PINSEL_RET_OK
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**********************************************************************/
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PINSEL_RET_CODE PINSEL_SetSlewMode(uint8_t portnum, uint8_t pinnum, FunctionalState NewState)
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{
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uint32_t *pPIN = NULL;
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PinSel_PinType type = PINSEL_GetPinType(portnum,pinnum);
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if(type == PINSEL_PIN_TYPE_UNKNOWN)
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return PINSEL_RET_INVALID_PIN;
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if((type!= PINSEL_PIN_TYPE_D) &&
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(type!= PINSEL_PIN_TYPE_W))
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return PINSEL_RET_NOT_SUPPORT;
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pPIN = PIN_GetPointer(portnum, pinnum);
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if(NewState == DISABLE)
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{
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*(uint32_t *)pPIN &= ~IOCON_SLEW_ENABLE;//Clear hys bits
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}
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else
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*(uint32_t *)pPIN |= IOCON_SLEW_ENABLE;
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return PINSEL_RET_OK;
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}
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/*********************************************************************//**
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* @brief Setup I2CMode for only pins that provide special I2C functionality
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* @param[in] portnum Port number, should be in range: 0..3
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* @param[in] pinnum Pin number, should be in range: 0..31
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* @param[in] I2CMode I2C mode, should be:
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* - PINSEL_I2CMODE_FAST_STANDARD: Fast mode and standard I2C mode
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* - PINSEL_I2CMODE_OPENDRAINIO: Open drain I/O
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* - PINSEL_I2CMODE_FASTMODEPLUS: Fast Mode Plus I/O
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* @return PINSEL Return Code
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* - PINSEL_RET_INVALID_PIN
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* - PINSEL_RET_NOT_SUPPORT
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* - PINSEL_RET_OK
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**********************************************************************/
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PINSEL_RET_CODE PINSEL_SetI2CMode(uint8_t portnum, uint8_t pinnum, PinSel_I2cMode I2CMode)
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{
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uint32_t *pPIN = NULL;
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PinSel_PinType type = PINSEL_GetPinType(portnum,pinnum);
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if(type == PINSEL_PIN_TYPE_UNKNOWN)
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return PINSEL_RET_INVALID_PIN;
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if(type != PINSEL_PIN_TYPE_I )
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return PINSEL_RET_NOT_SUPPORT;
|
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|
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pPIN = PIN_GetPointer(portnum, pinnum);
|
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|
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switch(I2CMode)
|
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{
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// Standard/Fast Mode I2C: HS = HIDRIVE = 0
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case PINSEL_I2CMODE_FAST_STANDARD:
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PINSEL_SetI2CFilter(portnum,pinnum,ENABLE);
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*(uint32_t *)pPIN &= ~(IOCON_I2CMODE_FASTPLUS);
|
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break;
|
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|
|
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// Non-I2C: HS = 1, HIDRIVE = 0
|
||
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case PINSEL_I2CMODE_OPENDRAINIO:
|
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PINSEL_SetI2CFilter(portnum,pinnum,DISABLE);
|
||
|
*(uint32_t *)pPIN &= ~(IOCON_I2CMODE_FASTPLUS);
|
||
|
break;
|
||
|
|
||
|
// Fast Mode Plus I2C: HS = 0, HIDRIVE =1
|
||
|
case PINSEL_I2CMODE_FASTMODEPLUS:
|
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PINSEL_SetI2CFilter(portnum,pinnum,ENABLE);
|
||
|
*(uint32_t *)pPIN |= (IOCON_I2CMODE_FASTPLUS);
|
||
|
break;
|
||
|
default:
|
||
|
return PINSEL_RET_ERR;
|
||
|
}
|
||
|
|
||
|
return PINSEL_RET_OK;
|
||
|
}
|
||
|
|
||
|
/*********************************************************************//**
|
||
|
* @brief Setup Open-drain mode in pin of type D, A, W
|
||
|
* @param[in] portnum Port number, should be in range: 0..3
|
||
|
* @param[in] pinnum Pin number, should be in range: 0..31
|
||
|
* @param[in] NewState new state of Open-drain mode:
|
||
|
* - DISABLE: Normal pin I/O mode
|
||
|
* - ENABLE: Open-drain enable
|
||
|
* @return PINSEL Return Code
|
||
|
* - PINSEL_RET_INVALID_PIN
|
||
|
* - PINSEL_RET_NOT_SUPPORT
|
||
|
* - PINSEL_RET_OK
|
||
|
**********************************************************************/
|
||
|
PINSEL_RET_CODE PINSEL_SetOpenDrainMode(uint8_t portnum, uint8_t pinnum, FunctionalState NewState)
|
||
|
{
|
||
|
uint32_t *pPIN = NULL;
|
||
|
PinSel_PinType type = PINSEL_GetPinType(portnum,pinnum);
|
||
|
|
||
|
if(type == PINSEL_PIN_TYPE_UNKNOWN)
|
||
|
return PINSEL_RET_INVALID_PIN;
|
||
|
if((type != PINSEL_PIN_TYPE_D ) &&
|
||
|
(type != PINSEL_PIN_TYPE_A ) &&
|
||
|
(type != PINSEL_PIN_TYPE_W ))
|
||
|
return PINSEL_RET_NOT_SUPPORT;
|
||
|
|
||
|
pPIN = PIN_GetPointer(portnum, pinnum);
|
||
|
if(NewState == DISABLE)
|
||
|
{
|
||
|
*(uint32_t *)pPIN &= ~IOCON_OPENDRAIN_MODE;//Clear hys bits
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
*(uint32_t *)pPIN |= IOCON_OPENDRAIN_MODE;
|
||
|
}
|
||
|
return PINSEL_RET_OK;
|
||
|
}
|
||
|
|
||
|
/*********************************************************************//**
|
||
|
* @brief Enable the Analog mode for each pin of Type A(default is as Digital pins)
|
||
|
* @param[in] portnum PORT number, should be in range: 0..3
|
||
|
* @param[in] pinnum Pin number, should be in range: 0..31
|
||
|
* @param[in] enable: the state of the pin that is expected to run
|
||
|
- ENABLE: Enable the DAC mode of the pin
|
||
|
- DISABLE: Disable the DAC mode
|
||
|
* @return PINSEL Return Code
|
||
|
* - PINSEL_RET_INVALID_PIN
|
||
|
* - PINSEL_RET_NOT_SUPPORT
|
||
|
* - PINSEL_RET_OK
|
||
|
**********************************************************************/
|
||
|
PINSEL_RET_CODE PINSEL_SetAnalogPinMode (uint8_t portnum, uint8_t pinnum, uint8_t enable)
|
||
|
{
|
||
|
uint32_t *pPIN = NULL;
|
||
|
PinSel_PinType type = PINSEL_GetPinType(portnum,pinnum);
|
||
|
|
||
|
if(type == PINSEL_PIN_TYPE_UNKNOWN)
|
||
|
return PINSEL_RET_INVALID_PIN;
|
||
|
if(type != PINSEL_PIN_TYPE_A )
|
||
|
return PINSEL_RET_NOT_SUPPORT;
|
||
|
|
||
|
pPIN = PIN_GetPointer(portnum, pinnum);
|
||
|
|
||
|
if(enable)
|
||
|
{
|
||
|
*(uint32_t *)pPIN &= ~(IOCON_DIGITIAL_MODE);
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
*(uint32_t *)pPIN |= IOCON_DIGITIAL_MODE;//Set 7th bit to one
|
||
|
}
|
||
|
|
||
|
return PINSEL_RET_OK;
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
/*********************************************************************//**
|
||
|
* @brief Choose the DAC mode for pin P0.26
|
||
|
* @param[in] portnum PORT number, should be in range: 0..3
|
||
|
* @param[in] pinnum Pin number, should be in range: 0..31
|
||
|
* @param[in] enable: the state of the pin that is expected to run
|
||
|
- ENABLE: Enable the DAC mode of the pin
|
||
|
- DISABLE: Disable the DAC mode
|
||
|
* @return PINSEL Return Code
|
||
|
* - PINSEL_RET_INVALID_PIN
|
||
|
* - PINSEL_RET_NOT_SUPPORT
|
||
|
* - PINSEL_RET_OK
|
||
|
**********************************************************************/
|
||
|
PINSEL_RET_CODE PINSEL_DacEnable (uint8_t portnum, uint8_t pinnum, uint8_t enable)
|
||
|
{
|
||
|
uint32_t *pPIN = NULL;
|
||
|
|
||
|
PinSel_PinType type = PINSEL_GetPinType(portnum,pinnum);
|
||
|
|
||
|
if(type == PINSEL_PIN_TYPE_UNKNOWN)
|
||
|
return PINSEL_RET_INVALID_PIN;
|
||
|
|
||
|
// This setting is only for DAC pin (output pin)
|
||
|
if(!((portnum == 0) && (pinnum == 26)))
|
||
|
{
|
||
|
return PINSEL_RET_NOT_SUPPORT;
|
||
|
}
|
||
|
|
||
|
pPIN = PIN_GetPointer(portnum, pinnum);
|
||
|
|
||
|
if(enable)
|
||
|
{
|
||
|
*(uint32_t *)pPIN |= IOCON_DAC_ENABLE;//Set 16th bit to one
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
*(uint32_t *)pPIN &= ~IOCON_DAC_ENABLE;//Set 16th bit to one
|
||
|
|
||
|
}
|
||
|
|
||
|
return PINSEL_RET_OK;
|
||
|
}
|
||
|
|
||
|
/*********************************************************************//**
|
||
|
* @brief Control the 10ns glitch filter for pin of type A,W
|
||
|
* @param[in] portnum PORT number, should be in range: 0..3
|
||
|
* @param[in] pinnum Pin number, should be in range: 0..31
|
||
|
* @param[in] enable: the state of the pin that is expected to run
|
||
|
- ENABLE: The noise pulses below approximately 10ns are filtered out
|
||
|
- DISABLE: No input filtering is done.
|
||
|
* @return PINSEL Return Code
|
||
|
* - PINSEL_RET_INVALID_PIN
|
||
|
* - PINSEL_RET_NOT_SUPPORT
|
||
|
* - PINSEL_RET_OK
|
||
|
**********************************************************************/
|
||
|
PINSEL_RET_CODE PINSEL_SetFilter (uint8_t portnum, uint8_t pinnum, uint8_t enable)
|
||
|
{
|
||
|
uint32_t *pPIN = NULL;
|
||
|
PinSel_PinType type = PINSEL_GetPinType(portnum,pinnum);
|
||
|
|
||
|
if(type == PINSEL_PIN_TYPE_UNKNOWN)
|
||
|
return PINSEL_RET_INVALID_PIN;
|
||
|
if((type != PINSEL_PIN_TYPE_A ) &&
|
||
|
(type != PINSEL_PIN_TYPE_W ))
|
||
|
return PINSEL_RET_NOT_SUPPORT;
|
||
|
|
||
|
pPIN = PIN_GetPointer(portnum, pinnum);
|
||
|
|
||
|
|
||
|
if(enable)
|
||
|
{
|
||
|
*(uint32_t *)pPIN &= ~(IOCON_10ns_FILTER_DISABLE);//Clear 8th bit to 0
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
*(uint32_t *)pPIN |= (IOCON_10ns_FILTER_DISABLE);//Set 8th bit to one
|
||
|
}
|
||
|
|
||
|
|
||
|
return PINSEL_RET_OK;
|
||
|
}
|
||
|
/*********************************************************************//**
|
||
|
* @brief Control the 50ns glitch filter for I2C pins (type I)
|
||
|
* @param[in] portnum PORT number, should be in range: 0..3
|
||
|
* @param[in] pinnum Pin number, should be in range: 0..31
|
||
|
* @param[in] enable: the state of the pin that is expected to run
|
||
|
- ENABLE: The noise pulses below approximately 10ns are filtered out
|
||
|
- DISABLE: No input filtering is done.
|
||
|
* @return PINSEL Return Code
|
||
|
* - PINSEL_RET_INVALID_PIN
|
||
|
* - PINSEL_RET_NOT_SUPPORT
|
||
|
* - PINSEL_RET_OK
|
||
|
**********************************************************************/
|
||
|
PINSEL_RET_CODE PINSEL_SetI2CFilter (uint8_t portnum, uint8_t pinnum, uint8_t enable)
|
||
|
{
|
||
|
uint32_t *pPIN = NULL;
|
||
|
PinSel_PinType type = PINSEL_GetPinType(portnum,pinnum);
|
||
|
|
||
|
if(type == PINSEL_PIN_TYPE_UNKNOWN)
|
||
|
return PINSEL_RET_INVALID_PIN;
|
||
|
if(type != PINSEL_PIN_TYPE_I)
|
||
|
return PINSEL_RET_NOT_SUPPORT;
|
||
|
|
||
|
pPIN = PIN_GetPointer(portnum, pinnum);
|
||
|
|
||
|
|
||
|
if(enable)
|
||
|
{
|
||
|
*(uint32_t *)pPIN &= ~(IOCON_HS_MASK);//Clear 8th bit to 0
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
*(uint32_t *)pPIN |= (IOCON_I2C_FILTER_DISABLE);//Set 8th bit to one
|
||
|
}
|
||
|
|
||
|
|
||
|
return PINSEL_RET_OK;
|
||
|
}
|
||
|
|
||
|
|
||
|
/**
|
||
|
* @}
|
||
|
*/
|
||
|
#endif /*_PINSEL*/
|
||
|
|
||
|
/**
|
||
|
* @}
|
||
|
*/
|
||
|
|
||
|
/* --------------------------------- End Of File ------------------------------ */
|