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nuttx/arch/arm/src/lpc17xx/lpc178x_gpio.h

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/************************************************************************************
* arch/arm/src/lpc17xx/lpc178x_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_LPC178X_GPIO_H
#define __ARCH_ARM_SRC_LPC17XX_LPC178X_GPIO_H
/************************************************************************************
* Included Files
************************************************************************************/
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Bit-encoded input to lpc17_configgpio() ******************************************/
/* 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 have ADC/DAC, USB, I2C
*/
#define GPIO_INBUFF_SHIFT (16) /* Bit 16: HYSTERESIS: 0-Disable, 1-Enabled */
#define GPIO_INBUFF_MASK (1 << GPIO_INBUFF_SHIFT)
# define GPIO_HYSTERESIS (1 << GPIO_INBUFF_SHIFT)
#define GPIO_INVERT (1 << 17) /* Bit 17: Input: 0-Not Inverted, 1-Inverted */
#define GPIO_SLEW_SHIFT (18) /* Bit 18: Rate Control: 0-Standard mode, 1-Fast mode */
#define GPIO_SLEW_MASK (1 << GPIO_SLEW_SHIFT)
# define GPIO_SLEW_NORMAL (0 << GPIO_SLEW_SHIFT)
# define GPIO_SLEW_FAST (1 << GPIO_SLEW_SHIFT)
#define GPIO_ADMODE_SHIFT (19) /* Bit 19: A/D Modes: 0-Analog, 1-Digital */
#define GPIO_ADMODE_MASK (1 << GPIO_ADMODE_SHIFT)
# define GPIO_MODE_DIGITAL (0 << GPIO_ADMODE_SHIFT)
# define GPIO_MODE_ANALOG (1 << GPIO_ADMODE_SHIFT)
#define GPIO_FILTER_SHIFT (20) /* Bit 20: Filter: 0-Off, 1-ON */
#define GPIO_FILTER_MASK (1 << GPIO_FILTER_SHIFT)
# define GPIO_FILTER_OFF (0 << GPIO_FILTER_SHIFT)
# define GPIO_FILTER_ON (1 << GPIO_FILTER_SHIFT)
#define GPIO_DACEN (1 << 21) /* Bit 21: DAC: 0-Disabled, 1-Enabled, P0:26 only */
#define GPIO_I2CMODE_SHIFT (22) /* Bits 22-23: I2C mode */
#define GPIO_I2CMODE_MASK (3 << GPIO_I2CMODE_SHIFT)
# 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 (12) /* Bits 12-13: 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_FLOAT (0 << GPIO_PUMODE_SHIFT) /* Neither pull-up nor -down */
# define GPIO_PULLDN (1 << GPIO_PUMODE_SHIFT) /* Pull-down resistor enabled */
# define GPIO_PULLUP (2 << GPIO_PUMODE_SHIFT) /* Pull-up resistor enabled */
# define GPIO_REPEATER (3 << GPIO_PUMODE_SHIFT) /* Repeater mode 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)
/************************************************************************************
* Public Types
************************************************************************************/
typedef uint32_t lpc17_pinset_t;
/************************************************************************************
* Public Data
************************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
#ifdef __cplusplus
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_ARM_SRC_LPC17XX_LPC178X_GPIO_H */
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