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/************************************************************************************
* arch/arm/src/lpc17xx/lpc17_gpio.h
*
* Copyright (C) 2010, 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_ARM_SRC_LPC17XX_LPC17_GPIO_H
#define __ARCH_ARM_SRC_LPC17XX_LPC17_GPIO_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#ifndef __ASSEMBLY__
# include <stdint.h>
#endif
#include <arch/lpc17xx/chip.h>
#include "chip/lpc17_gpio.h"
#include "chip/lpc17_pinconn.h"
#include "chip/lpc17_pinconfig.h"
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Bit-encoded input to lpc17_configgpio() ******************************************/
#if defined(LPC176x)
/* Encoding: FFFx MMOV PPPN NNNN
*
* Pin Function: FFF
* Pin Mode bits: MM
* Open drain: O (output pins)
* Initial value: V (output pins)
* Port number: PPP (0-4)
* Pin number: NNNNN (0-31)
*/
/* Pin Function bits: FFF
* Only meaningful when the GPIO function is GPIO_PIN
*/
#define GPIO_FUNC_SHIFT (13) /* Bits 13-15: GPIO mode */
#define GPIO_FUNC_MASK (7 << GPIO_FUNC_SHIFT)
# define GPIO_INPUT (0 << GPIO_FUNC_SHIFT) /* 000 GPIO input pin */
# define GPIO_INTFE (1 << GPIO_FUNC_SHIFT) /* 001 GPIO interrupt falling edge */
# define GPIO_INTRE (2 << GPIO_FUNC_SHIFT) /* 010 GPIO interrupt rising edge */
# define GPIO_INTBOTH (3 << GPIO_FUNC_SHIFT) /* 011 GPIO interrupt both edges */
# define GPIO_OUTPUT (4 << GPIO_FUNC_SHIFT) /* 100 GPIO outpout pin */
# define GPIO_ALT1 (5 << GPIO_FUNC_SHIFT) /* 101 Alternate function 1 */
# define GPIO_ALT2 (6 << GPIO_FUNC_SHIFT) /* 110 Alternate function 2 */
# define GPIO_ALT3 (7 << GPIO_FUNC_SHIFT) /* 111 Alternate function 3 */
#define GPIO_EDGE_SHIFT (13) /* Bits 13-14: Interrupt edge bits */
#define GPIO_EDGE_MASK (3 << GPIO_EDGE_SHIFT)
#define GPIO_INOUT_MASK GPIO_OUTPUT
#define GPIO_FE_MASK GPIO_INTFE
#define GPIO_RE_MASK GPIO_INTRE
#define GPIO_ISGPIO(ps) ((uint16_t(ps) & GPIO_FUNC_MASK) <= GPIO_OUTPUT)
#define GPIO_ISALT(ps) ((uint16_t(ps) & GPIO_FUNC_MASK) > GPIO_OUTPUT)
#define GPIO_ISINPUT(ps) (((ps) & GPIO_FUNC_MASK) == GPIO_INPUT)
#define GPIO_ISOUTPUT(ps) (((ps) & GPIO_FUNC_MASK) == GPIO_OUTPUT)
#define GPIO_ISINORINT(ps) (((ps) & GPIO_INOUT_MASK) == 0)
#define GPIO_ISOUTORALT(ps) (((ps) & GPIO_INOUT_MASK) != 0)
#define GPIO_ISINTERRUPT(ps) (GPIO_ISOUTPUT(ps) && !GPIO_ISINPUT(ps))
#define GPIO_ISFE(ps) (((ps) & GPIO_FE_MASK) != 0)
#define GPIO_ISRE(ps) (((ps) & GPIO_RE_MASK) != 0)
/* Pin Mode: MM */
#define GPIO_PUMODE_SHIFT (10) /* Bits 10-11: Pin pull-up mode */
#define GPIO_PUMODE_MASK (3 << GPIO_PUMODE_SHIFT)
# define GPIO_PULLUP (0 << GPIO_PUMODE_SHIFT) /* Pull-up resistor enabled */
# define GPIO_REPEATER (1 << GPIO_PUMODE_SHIFT) /* Repeater mode enabled */
# define GPIO_FLOAT (2 << GPIO_PUMODE_SHIFT) /* Neither pull-up nor -down */
# define GPIO_PULLDN (3 << GPIO_PUMODE_SHIFT) /* Pull-down resistor enabled */
/* Open drain: O */
#define GPIO_OPEN_DRAIN (1 << 9) /* Bit 9: Open drain mode */
/* Initial value: V */
#define GPIO_VALUE (1 << 8) /* Bit 8: Initial GPIO output value */
#define GPIO_VALUE_ONE GPIO_VALUE
#define GPIO_VALUE_ZERO (0)
/* Port number: PPP (0-4) */
#define GPIO_PORT_SHIFT (5) /* Bit 5-7: Port number */
#define GPIO_PORT_MASK (7 << GPIO_PORT_SHIFT)
# define GPIO_PORT0 (0 << GPIO_PORT_SHIFT)
# define GPIO_PORT1 (1 << GPIO_PORT_SHIFT)
# define GPIO_PORT2 (2 << GPIO_PORT_SHIFT)
# define GPIO_PORT3 (3 << GPIO_PORT_SHIFT)
# define GPIO_PORT4 (4 << GPIO_PORT_SHIFT)
#define GPIO_NPORTS 5
/* Pin number: NNNNN (0-31) */
#define GPIO_PIN_SHIFT 0 /* Bits 0-4: GPIO number: 0-31 */
#define GPIO_PIN_MASK (31 << GPIO_PIN_SHIFT)
#define GPIO_PIN0 (0 << GPIO_PIN_SHIFT)
#define GPIO_PIN1 (1 << GPIO_PIN_SHIFT)
#define GPIO_PIN2 (2 << GPIO_PIN_SHIFT)
#define GPIO_PIN3 (3 << GPIO_PIN_SHIFT)
#define GPIO_PIN4 (4 << GPIO_PIN_SHIFT)
#define GPIO_PIN5 (5 << GPIO_PIN_SHIFT)
#define GPIO_PIN6 (6 << GPIO_PIN_SHIFT)
#define GPIO_PIN7 (7 << GPIO_PIN_SHIFT)
#define GPIO_PIN8 (8 << GPIO_PIN_SHIFT)
#define GPIO_PIN9 (9 << GPIO_PIN_SHIFT)
#define GPIO_PIN10 (10 << GPIO_PIN_SHIFT)
#define GPIO_PIN11 (11 << GPIO_PIN_SHIFT)
#define GPIO_PIN12 (12 << GPIO_PIN_SHIFT)
#define GPIO_PIN13 (13 << GPIO_PIN_SHIFT)
#define GPIO_PIN14 (14 << GPIO_PIN_SHIFT)
#define GPIO_PIN15 (15 << GPIO_PIN_SHIFT)
#define GPIO_PIN16 (16 << GPIO_PIN_SHIFT)
#define GPIO_PIN17 (17 << GPIO_PIN_SHIFT)
#define GPIO_PIN18 (18 << GPIO_PIN_SHIFT)
#define GPIO_PIN19 (19 << GPIO_PIN_SHIFT)
#define GPIO_PIN20 (20 << GPIO_PIN_SHIFT)
#define GPIO_PIN21 (21 << GPIO_PIN_SHIFT)
#define GPIO_PIN22 (22 << GPIO_PIN_SHIFT)
#define GPIO_PIN23 (23 << GPIO_PIN_SHIFT)
#define GPIO_PIN24 (24 << GPIO_PIN_SHIFT)
#define GPIO_PIN25 (25 << GPIO_PIN_SHIFT)
#define GPIO_PIN26 (26 << GPIO_PIN_SHIFT)
#define GPIO_PIN27 (27 << GPIO_PIN_SHIFT)
#define GPIO_PIN28 (28 << GPIO_PIN_SHIFT)
#define GPIO_PIN29 (29 << GPIO_PIN_SHIFT)
#define GPIO_PIN30 (30 << GPIO_PIN_SHIFT)
#define GPIO_PIN31 (31 << GPIO_PIN_SHIFT)
#elif defined(LPC178x)
/* Encoding: TTTT TTTT FFFF MMOV PPPN NNNN
*
* Special Pin Functions: TTTT TTTT
* Pin Function: FFFF
* Pin Mode bits: MM
* Open drain: O (output pins)
* Initial value: V (output pins)
* Port number: PPP (0-4)
* Pin number: NNNNN (0-31)
*/
/* Special Pin Functions
* For pins that has ADC/DAC, USB, I2C
*/
#define GPIO_IOCON_TYPE_D_MASK (0x0000067f) /* All port except where ADC/DAC, USB, I2C is present */
#define GPIO_IOCON_TYPE_A_MASK (0x000105df) /* USB/ADC/DAC P0:12 to 13, P0:23 to 26, P1:30 to 31 */
#define GPIO_IOCON_TYPE_U_MASK (0x00000007) /* USB P0:29 to 31 */
#define GPIO_IOCON_TYPE_I_MASK (0x00000347) /* I2C/USB P0:27 to 28, P5:2 to 3 */
#define GPIO_IOCON_TYPE_W_MASK (0x000007ff) /* I2S P0:7 to 9 */
# define GPIO_HYS (1 << 16) /* Bit 16: HYSTERESIS: 0-Disable, 1-Enabled */
# define GPIO_INV (1 << 17) /* Bit 17: Input: 0-Not Inverted, 1-Inverted */
# define GPIO_SLEW (1 << 18) /* Bit 18: Rate Control: 0-Standard mode, 1-Fast mode */
# define GPIO_ADMODE (1 << 19) /* Bit 19: A/D Modes: 0-Analog, 1-Digital */
# define GPIO_FILTER (1 << 20) /* Bit 20: Filter: 0-Off, 1-ON */
# define GPIO_DACEN (1 << 21) /* Bit 21: DAC: 0-Disabled, 1-Enabled, P0:26 only */
# define GPIO_I2CHS (1 << 22) /* Bit 22: Filter and Rate Control: 0-Enabled, 1-Disabled */
# define GPIO_HIDRIVE (1 << 23) /* Bit 23: Current Sink: 0-4mA, 1-20mA P5:2 and P5:3 only,*/
/* Pin Function bits: FFFF
* Only meaningful when the GPIO function is GPIO_PIN
*/
#define GPIO_FUNC_SHIFT (12) /* Bits 12-15: GPIO mode */
#define GPIO_FUNC_MASK (15 << GPIO_FUNC_SHIFT)
# define GPIO_INPUT (0 << GPIO_FUNC_SHIFT) /* 0000 GPIO input pin */
# define GPIO_INTFE (1 << GPIO_FUNC_SHIFT) /* 0001 GPIO interrupt falling edge */
# define GPIO_INTRE (2 << GPIO_FUNC_SHIFT) /* 0010 GPIO interrupt rising edge */
# define GPIO_INTBOTH (3 << GPIO_FUNC_SHIFT) /* 0011 GPIO interrupt both edges */
# define GPIO_OUTPUT (4 << GPIO_FUNC_SHIFT) /* 0100 GPIO outpout pin */
# define GPIO_ALT1 (5 << GPIO_FUNC_SHIFT) /* 0101 Alternate function 1 */
# define GPIO_ALT2 (6 << GPIO_FUNC_SHIFT) /* 0110 Alternate function 2 */
# define GPIO_ALT3 (7 << GPIO_FUNC_SHIFT) /* 0111 Alternate function 3 */
# define GPIO_ALT4 (8 << GPIO_FUNC_SHIFT) /* 1000 Alternate function 4 */
# define GPIO_ALT5 (9 << GPIO_FUNC_SHIFT) /* 1001 Alternate function 5 */
# define GPIO_ALT6 (10 << GPIO_FUNC_SHIFT) /* 1010 Alternate function 6 */
# define GPIO_ALT7 (11 << GPIO_FUNC_SHIFT) /* 1011 Alternate function 7 */
#define GPIO_EDGE_SHIFT (13) /* Bits 13-14: Interrupt edge bits */
#define GPIO_EDGE_MASK (3 << GPIO_EDGE_SHIFT)
#define GPIO_INOUT_MASK GPIO_OUTPUT
#define GPIO_FE_MASK GPIO_INTFE
#define GPIO_RE_MASK GPIO_INTRE
#define GPIO_ISGPIO(ps) ((uint16_t(ps) & GPIO_FUNC_MASK) <= GPIO_OUTPUT)
#define GPIO_ISALT(ps) ((uint16_t(ps) & GPIO_FUNC_MASK) > GPIO_OUTPUT)
#define GPIO_ISINPUT(ps) (((ps) & GPIO_FUNC_MASK) == GPIO_INPUT)
#define GPIO_ISOUTPUT(ps) (((ps) & GPIO_FUNC_MASK) == GPIO_OUTPUT)
#define GPIO_ISINORINT(ps) (((ps) & GPIO_INOUT_MASK) == 0)
#define GPIO_ISOUTORALT(ps) (((ps) & GPIO_INOUT_MASK) != 0)
#define GPIO_ISINTERRUPT(ps) (GPIO_ISOUTPUT(ps) && !GPIO_ISINPUT(ps))
#define GPIO_ISFE(ps) (((ps) & GPIO_FE_MASK) != 0)
#define GPIO_ISRE(ps) (((ps) & GPIO_RE_MASK) != 0)
/* Pin Mode: MM */
#define GPIO_PUMODE_SHIFT (10) /* Bits 10-11: Pin pull-up mode */
#define GPIO_PUMODE_MASK (3 << GPIO_PUMODE_SHIFT)
# define GPIO_PULLUP (0 << GPIO_PUMODE_SHIFT) /* Pull-up resistor enabled */
# define GPIO_REPEATER (1 << GPIO_PUMODE_SHIFT) /* Repeater mode enabled */
# define GPIO_FLOAT (2 << GPIO_PUMODE_SHIFT) /* Neither pull-up nor -down */
# define GPIO_PULLDN (3 << GPIO_PUMODE_SHIFT) /* Pull-down resistor enabled */
/* Open drain: O */
#define GPIO_OPEN_DRAIN (1 << 9) /* Bit 9: Open drain mode */
/* Initial value: V */
#define GPIO_VALUE (1 << 8) /* Bit 8: Initial GPIO output value */
#define GPIO_VALUE_ONE GPIO_VALUE
#define GPIO_VALUE_ZERO (0)
/* Port number: PPP (0-5) */
#define GPIO_PORT_SHIFT (5) /* Bit 5-7: Port number */
#define GPIO_PORT_MASK (7 << GPIO_PORT_SHIFT)
# define GPIO_PORT0 (0 << GPIO_PORT_SHIFT)
# define GPIO_PORT1 (1 << GPIO_PORT_SHIFT)
# define GPIO_PORT2 (2 << GPIO_PORT_SHIFT)
# define GPIO_PORT3 (3 << GPIO_PORT_SHIFT)
# define GPIO_PORT4 (4 << GPIO_PORT_SHIFT)
# define GPIO_PORT5 (5 << GPIO_PORT_SHIFT)
#define GPIO_NPORTS 6
/* Pin number: NNNNN (0-31) */
#define GPIO_PIN_SHIFT 0 /* Bits 0-4: GPIO number: 0-31 */
#define GPIO_PIN_MASK (31 << GPIO_PIN_SHIFT)
#define GPIO_PIN0 (0 << GPIO_PIN_SHIFT)
#define GPIO_PIN1 (1 << GPIO_PIN_SHIFT)
#define GPIO_PIN2 (2 << GPIO_PIN_SHIFT)
#define GPIO_PIN3 (3 << GPIO_PIN_SHIFT)
#define GPIO_PIN4 (4 << GPIO_PIN_SHIFT)
#define GPIO_PIN5 (5 << GPIO_PIN_SHIFT)
#define GPIO_PIN6 (6 << GPIO_PIN_SHIFT)
#define GPIO_PIN7 (7 << GPIO_PIN_SHIFT)
#define GPIO_PIN8 (8 << GPIO_PIN_SHIFT)
#define GPIO_PIN9 (9 << GPIO_PIN_SHIFT)
#define GPIO_PIN10 (10 << GPIO_PIN_SHIFT)
#define GPIO_PIN11 (11 << GPIO_PIN_SHIFT)
#define GPIO_PIN12 (12 << GPIO_PIN_SHIFT)
#define GPIO_PIN13 (13 << GPIO_PIN_SHIFT)
#define GPIO_PIN14 (14 << GPIO_PIN_SHIFT)
#define GPIO_PIN15 (15 << GPIO_PIN_SHIFT)
#define GPIO_PIN16 (16 << GPIO_PIN_SHIFT)
#define GPIO_PIN17 (17 << GPIO_PIN_SHIFT)
#define GPIO_PIN18 (18 << GPIO_PIN_SHIFT)
#define GPIO_PIN19 (19 << GPIO_PIN_SHIFT)
#define GPIO_PIN20 (20 << GPIO_PIN_SHIFT)
#define GPIO_PIN21 (21 << GPIO_PIN_SHIFT)
#define GPIO_PIN22 (22 << GPIO_PIN_SHIFT)
#define GPIO_PIN23 (23 << GPIO_PIN_SHIFT)
#define GPIO_PIN24 (24 << GPIO_PIN_SHIFT)
#define GPIO_PIN25 (25 << GPIO_PIN_SHIFT)
#define GPIO_PIN26 (26 << GPIO_PIN_SHIFT)
#define GPIO_PIN27 (27 << GPIO_PIN_SHIFT)
#define GPIO_PIN28 (28 << GPIO_PIN_SHIFT)
#define GPIO_PIN29 (29 << GPIO_PIN_SHIFT)
#define GPIO_PIN30 (30 << GPIO_PIN_SHIFT)
#define GPIO_PIN31 (31 << GPIO_PIN_SHIFT)
#else
# error "Unrecognized LPC17xx family"
#endif
/************************************************************************************
* Public Types
************************************************************************************/
#ifdef LPC176x
typedef uint16_t lpc17_pinset_t;
#else
typedef uint32_t lpc17_pinset_t;
#endif
/************************************************************************************
* Public Data
************************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/* These tables have global scope only because they are shared between lpc17_gpio.c,
* lpc17_gpioint.c, and lpc17_gpiodbg.c
*/
#ifdef CONFIG_GPIO_IRQ
EXTERN uint64_t g_intedge0;
EXTERN uint64_t g_intedge2;
#endif
EXTERN const uint32_t g_fiobase[GPIO_NPORTS];
EXTERN const uint32_t g_intbase[GPIO_NPORTS];
EXTERN const uint32_t g_lopinsel[GPIO_NPORTS];
EXTERN const uint32_t g_hipinsel[GPIO_NPORTS];
EXTERN const uint32_t g_lopinmode[GPIO_NPORTS];
EXTERN const uint32_t g_hipinmode[GPIO_NPORTS];
EXTERN const uint32_t g_odmode[GPIO_NPORTS];
/****************************************************************************
* Public Functions
****************************************************************************/
/************************************************************************************
* Name: lpc17_gpioirqinitialize
*
* Description:
* Initialize logic to support a second level of interrupt decoding for GPIO pins.
*
************************************************************************************/
#ifdef CONFIG_GPIO_IRQ
void lpc17_gpioirqinitialize(void);
#else
# define lpc17_gpioirqinitialize()
#endif
/************************************************************************************
* Name: lpc17_configgpio
*
* Description:
* Configure a GPIO pin based on bit-encoded description of the pin.
*
************************************************************************************/
int lpc17_configgpio(lpc17_pinset_t cfgset);
/************************************************************************************
* Name: lpc17_gpiowrite
*
* Description:
* Write one or zero to the selected GPIO pin
*
************************************************************************************/
void lpc17_gpiowrite(lpc17_pinset_t pinset, bool value);
/************************************************************************************
* Name: lpc17_gpioread
*
* Description:
* Read one or zero from the selected GPIO pin
*
************************************************************************************/
bool lpc17_gpioread(lpc17_pinset_t pinset);
/************************************************************************************
* Name: lpc17_gpioirqenable
*
* Description:
* Enable the interrupt for specified GPIO IRQ
*
************************************************************************************/
#ifdef CONFIG_GPIO_IRQ
void lpc17_gpioirqenable(int irq);
#else
# define lpc17_gpioirqenable(irq)
#endif
/************************************************************************************
* Name: lpc17_gpioirqdisable
*
* Description:
* Disable the interrupt for specified GPIO IRQ
*
************************************************************************************/
#ifdef CONFIG_GPIO_IRQ
void lpc17_gpioirqdisable(int irq);
#else
# define lpc17_gpioirqdisable(irq)
#endif
/************************************************************************************
* Function: lpc17_dumpgpio
*
* Description:
* Dump all GPIO registers associated with the base address of the provided pinset.
*
************************************************************************************/
#ifdef CONFIG_DEBUG_GPIO
int lpc17_dumpgpio(lpc17_pinset_t pinset, const char *msg);
#else
# define lpc17_dumpgpio(p,m)
#endif
#ifdef __cplusplus
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_ARM_SRC_LPC17XX_LPC17_GPIO_H */
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