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