319 lines
12 KiB
C
319 lines
12 KiB
C
/**********************************************************************
|
|
* $Id$ lpc17xx_pinsel.c 2010-05-21
|
|
*//**
|
|
* @file lpc17xx_pinsel.c
|
|
* @brief Contains all functions support for Pin connect block firmware
|
|
* library on LPC17xx
|
|
* @version 2.0
|
|
* @date 21. May. 2010
|
|
* @author NXP MCU SW Application Team
|
|
*
|
|
* Copyright(C) 2010, 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
|
|
* @{
|
|
*/
|
|
|
|
/* Includes ------------------------------------------------------------------- */
|
|
#include "lpc17xx_pinsel.h"
|
|
|
|
/* Public Functions ----------------------------------------------------------- */
|
|
|
|
static void set_PinFunc ( uint8_t portnum, uint8_t pinnum, uint8_t funcnum);
|
|
static void set_ResistorMode ( uint8_t portnum, uint8_t pinnum, uint8_t modenum);
|
|
static void set_OpenDrainMode( uint8_t portnum, uint8_t pinnum, uint8_t modenum);
|
|
|
|
/*********************************************************************//**
|
|
* @brief Setup the pin selection function
|
|
* @param[in] portnum PORT number,
|
|
* should be one of the following:
|
|
* - PINSEL_PORT_0 : Port 0
|
|
* - PINSEL_PORT_1 : Port 1
|
|
* - PINSEL_PORT_2 : Port 2
|
|
* - PINSEL_PORT_3 : Port 3
|
|
*
|
|
* @param[in] pinnum Pin number,
|
|
* should be one of the following:
|
|
- PINSEL_PIN_0 : Pin 0
|
|
- PINSEL_PIN_1 : Pin 1
|
|
- PINSEL_PIN_2 : Pin 2
|
|
- PINSEL_PIN_3 : Pin 3
|
|
- PINSEL_PIN_4 : Pin 4
|
|
- PINSEL_PIN_5 : Pin 5
|
|
- PINSEL_PIN_6 : Pin 6
|
|
- PINSEL_PIN_7 : Pin 7
|
|
- PINSEL_PIN_8 : Pin 8
|
|
- PINSEL_PIN_9 : Pin 9
|
|
- PINSEL_PIN_10 : Pin 10
|
|
- PINSEL_PIN_11 : Pin 11
|
|
- PINSEL_PIN_12 : Pin 12
|
|
- PINSEL_PIN_13 : Pin 13
|
|
- PINSEL_PIN_14 : Pin 14
|
|
- PINSEL_PIN_15 : Pin 15
|
|
- PINSEL_PIN_16 : Pin 16
|
|
- PINSEL_PIN_17 : Pin 17
|
|
- PINSEL_PIN_18 : Pin 18
|
|
- PINSEL_PIN_19 : Pin 19
|
|
- PINSEL_PIN_20 : Pin 20
|
|
- PINSEL_PIN_21 : Pin 21
|
|
- PINSEL_PIN_22 : Pin 22
|
|
- PINSEL_PIN_23 : Pin 23
|
|
- PINSEL_PIN_24 : Pin 24
|
|
- PINSEL_PIN_25 : Pin 25
|
|
- PINSEL_PIN_26 : Pin 26
|
|
- PINSEL_PIN_27 : Pin 27
|
|
- PINSEL_PIN_28 : Pin 28
|
|
- PINSEL_PIN_29 : Pin 29
|
|
- PINSEL_PIN_30 : Pin 30
|
|
- PINSEL_PIN_31 : Pin 31
|
|
|
|
* @param[in] funcnum Function number,
|
|
* should be one of the following:
|
|
* - PINSEL_FUNC_0 : default function
|
|
* - PINSEL_FUNC_1 : first alternate function
|
|
* - PINSEL_FUNC_2 : second alternate function
|
|
* - PINSEL_FUNC_3 : third alternate function
|
|
*
|
|
* @return None
|
|
**********************************************************************/
|
|
static void set_PinFunc ( uint8_t portnum, uint8_t pinnum, uint8_t funcnum)
|
|
{
|
|
uint32_t pinnum_t = pinnum;
|
|
uint32_t pinselreg_idx = 2 * portnum;
|
|
uint32_t *pPinCon = (uint32_t *)&LPC_PINCON->PINSEL0;
|
|
|
|
if (pinnum_t >= 16) {
|
|
pinnum_t -= 16;
|
|
pinselreg_idx++;
|
|
}
|
|
*(uint32_t *)(pPinCon + pinselreg_idx) &= ~(0x03UL << (pinnum_t * 2));
|
|
*(uint32_t *)(pPinCon + pinselreg_idx) |= ((uint32_t)funcnum) << (pinnum_t * 2);
|
|
}
|
|
|
|
/*********************************************************************//**
|
|
* @brief Setup resistor mode for each pin
|
|
* @param[in] portnum PORT number,
|
|
* should be one of the following:
|
|
* - PINSEL_PORT_0 : Port 0
|
|
* - PINSEL_PORT_1 : Port 1
|
|
* - PINSEL_PORT_2 : Port 2
|
|
* - PINSEL_PORT_3 : Port 3
|
|
* @param[in] pinnum Pin number,
|
|
* should be one of the following:
|
|
- PINSEL_PIN_0 : Pin 0
|
|
- PINSEL_PIN_1 : Pin 1
|
|
- PINSEL_PIN_2 : Pin 2
|
|
- PINSEL_PIN_3 : Pin 3
|
|
- PINSEL_PIN_4 : Pin 4
|
|
- PINSEL_PIN_5 : Pin 5
|
|
- PINSEL_PIN_6 : Pin 6
|
|
- PINSEL_PIN_7 : Pin 7
|
|
- PINSEL_PIN_8 : Pin 8
|
|
- PINSEL_PIN_9 : Pin 9
|
|
- PINSEL_PIN_10 : Pin 10
|
|
- PINSEL_PIN_11 : Pin 11
|
|
- PINSEL_PIN_12 : Pin 12
|
|
- PINSEL_PIN_13 : Pin 13
|
|
- PINSEL_PIN_14 : Pin 14
|
|
- PINSEL_PIN_15 : Pin 15
|
|
- PINSEL_PIN_16 : Pin 16
|
|
- PINSEL_PIN_17 : Pin 17
|
|
- PINSEL_PIN_18 : Pin 18
|
|
- PINSEL_PIN_19 : Pin 19
|
|
- PINSEL_PIN_20 : Pin 20
|
|
- PINSEL_PIN_21 : Pin 21
|
|
- PINSEL_PIN_22 : Pin 22
|
|
- PINSEL_PIN_23 : Pin 23
|
|
- PINSEL_PIN_24 : Pin 24
|
|
- PINSEL_PIN_25 : Pin 25
|
|
- PINSEL_PIN_26 : Pin 26
|
|
- PINSEL_PIN_27 : Pin 27
|
|
- PINSEL_PIN_28 : Pin 28
|
|
- PINSEL_PIN_29 : Pin 29
|
|
- PINSEL_PIN_30 : Pin 30
|
|
- PINSEL_PIN_31 : Pin 31
|
|
|
|
* @param[in] modenum: Mode number,
|
|
* should be one of the following:
|
|
- PINSEL_PINMODE_PULLUP : Internal pull-up resistor
|
|
- PINSEL_PINMODE_TRISTATE : Tri-state
|
|
- PINSEL_PINMODE_PULLDOWN : Internal pull-down resistor
|
|
|
|
* @return None
|
|
**********************************************************************/
|
|
void set_ResistorMode ( uint8_t portnum, uint8_t pinnum, uint8_t modenum)
|
|
{
|
|
uint32_t pinnum_t = pinnum;
|
|
uint32_t pinmodereg_idx = 2 * portnum;
|
|
uint32_t *pPinCon = (uint32_t *)&LPC_PINCON->PINMODE0;
|
|
|
|
if (pinnum_t >= 16) {
|
|
pinnum_t -= 16;
|
|
pinmodereg_idx++ ;
|
|
}
|
|
|
|
*(uint32_t *)(pPinCon + pinmodereg_idx) &= ~(0x03UL << (pinnum_t * 2));
|
|
*(uint32_t *)(pPinCon + pinmodereg_idx) |= ((uint32_t)modenum) << (pinnum_t * 2);
|
|
}
|
|
|
|
/*********************************************************************//**
|
|
* @brief Setup Open drain mode for each pin
|
|
* @param[in] portnum PORT number,
|
|
* should be one of the following:
|
|
* - PINSEL_PORT_0 : Port 0
|
|
* - PINSEL_PORT_1 : Port 1
|
|
* - PINSEL_PORT_2 : Port 2
|
|
* - PINSEL_PORT_3 : Port 3
|
|
*
|
|
* @param[in] pinnum Pin number,
|
|
* should be one of the following:
|
|
- PINSEL_PIN_0 : Pin 0
|
|
- PINSEL_PIN_1 : Pin 1
|
|
- PINSEL_PIN_2 : Pin 2
|
|
- PINSEL_PIN_3 : Pin 3
|
|
- PINSEL_PIN_4 : Pin 4
|
|
- PINSEL_PIN_5 : Pin 5
|
|
- PINSEL_PIN_6 : Pin 6
|
|
- PINSEL_PIN_7 : Pin 7
|
|
- PINSEL_PIN_8 : Pin 8
|
|
- PINSEL_PIN_9 : Pin 9
|
|
- PINSEL_PIN_10 : Pin 10
|
|
- PINSEL_PIN_11 : Pin 11
|
|
- PINSEL_PIN_12 : Pin 12
|
|
- PINSEL_PIN_13 : Pin 13
|
|
- PINSEL_PIN_14 : Pin 14
|
|
- PINSEL_PIN_15 : Pin 15
|
|
- PINSEL_PIN_16 : Pin 16
|
|
- PINSEL_PIN_17 : Pin 17
|
|
- PINSEL_PIN_18 : Pin 18
|
|
- PINSEL_PIN_19 : Pin 19
|
|
- PINSEL_PIN_20 : Pin 20
|
|
- PINSEL_PIN_21 : Pin 21
|
|
- PINSEL_PIN_22 : Pin 22
|
|
- PINSEL_PIN_23 : Pin 23
|
|
- PINSEL_PIN_24 : Pin 24
|
|
- PINSEL_PIN_25 : Pin 25
|
|
- PINSEL_PIN_26 : Pin 26
|
|
- PINSEL_PIN_27 : Pin 27
|
|
- PINSEL_PIN_28 : Pin 28
|
|
- PINSEL_PIN_29 : Pin 29
|
|
- PINSEL_PIN_30 : Pin 30
|
|
- PINSEL_PIN_31 : Pin 31
|
|
|
|
* @param[in] modenum Open drain mode number,
|
|
* should be one of the following:
|
|
* - PINSEL_PINMODE_NORMAL : Pin is in the normal (not open drain) mode
|
|
* - PINSEL_PINMODE_OPENDRAIN : Pin is in the open drain mode
|
|
*
|
|
* @return None
|
|
**********************************************************************/
|
|
void set_OpenDrainMode( uint8_t portnum, uint8_t pinnum, uint8_t modenum)
|
|
{
|
|
uint32_t *pPinCon = (uint32_t *)&LPC_PINCON->PINMODE_OD0;
|
|
|
|
if (modenum == PINSEL_PINMODE_OPENDRAIN){
|
|
*(uint32_t *)(pPinCon + portnum) |= (0x01UL << pinnum);
|
|
} else {
|
|
*(uint32_t *)(pPinCon + portnum) &= ~(0x01UL << pinnum);
|
|
}
|
|
}
|
|
|
|
/* End of Public Functions ---------------------------------------------------- */
|
|
|
|
/* Public Functions ----------------------------------------------------------- */
|
|
/** @addtogroup PINSEL_Public_Functions
|
|
* @{
|
|
*/
|
|
/*********************************************************************//**
|
|
* @brief Configure trace function
|
|
* @param[in] NewState State of the Trace function configuration,
|
|
* should be one of the following:
|
|
* - ENABLE : Enable Trace Function
|
|
* - DISABLE : Disable Trace Function
|
|
*
|
|
* @return None
|
|
**********************************************************************/
|
|
void PINSEL_ConfigTraceFunc(FunctionalState NewState)
|
|
{
|
|
if (NewState == ENABLE) {
|
|
LPC_PINCON->PINSEL10 |= (0x01UL << 3);
|
|
} else if (NewState == DISABLE) {
|
|
LPC_PINCON->PINSEL10 &= ~(0x01UL << 3);
|
|
}
|
|
}
|
|
|
|
/*********************************************************************//**
|
|
* @brief Setup I2C0 pins
|
|
* @param[in] i2cPinMode I2C pin mode,
|
|
* should be one of the following:
|
|
* - PINSEL_I2C_Normal_Mode : The standard drive mode
|
|
* - PINSEL_I2C_Fast_Mode : Fast Mode Plus drive mode
|
|
*
|
|
* @param[in] filterSlewRateEnable should be:
|
|
* - ENABLE: Enable filter and slew rate.
|
|
* - DISABLE: Disable filter and slew rate.
|
|
*
|
|
* @return None
|
|
**********************************************************************/
|
|
void PINSEL_SetI2C0Pins(uint8_t i2cPinMode, FunctionalState filterSlewRateEnable)
|
|
{
|
|
uint32_t regVal;
|
|
|
|
if (i2cPinMode == PINSEL_I2C_Fast_Mode){
|
|
regVal = PINSEL_I2CPADCFG_SCLDRV0 | PINSEL_I2CPADCFG_SDADRV0;
|
|
}
|
|
|
|
if (filterSlewRateEnable == DISABLE){
|
|
regVal = PINSEL_I2CPADCFG_SCLI2C0 | PINSEL_I2CPADCFG_SDAI2C0;
|
|
}
|
|
LPC_PINCON->I2CPADCFG = regVal;
|
|
}
|
|
|
|
|
|
/*********************************************************************//**
|
|
* @brief Configure Pin corresponding to specified parameters passed
|
|
* in the PinCfg
|
|
* @param[in] PinCfg Pointer to a PINSEL_CFG_Type structure
|
|
* that contains the configuration information for the
|
|
* specified pin.
|
|
* @return None
|
|
**********************************************************************/
|
|
void PINSEL_ConfigPin(PINSEL_CFG_Type *PinCfg)
|
|
{
|
|
set_PinFunc(PinCfg->Portnum, PinCfg->Pinnum, PinCfg->Funcnum);
|
|
set_ResistorMode(PinCfg->Portnum, PinCfg->Pinnum, PinCfg->Pinmode);
|
|
set_OpenDrainMode(PinCfg->Portnum, PinCfg->Pinnum, PinCfg->OpenDrain);
|
|
}
|
|
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/* --------------------------------- End Of File ------------------------------ */
|