periph_cpu.h
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/*
* Copyright (C) 2015 Rakendra Thapa <rakendrathapa@gmail.com>
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup cpu_lm4f120
* @{
*
* @file
* @brief CPU specific definitions for internal peripheral handling
*
* @author Rakendra Thapa <rakendrathapa@gmail.com>
*/
#ifndef PERIPH_CPU_H_
#define PERIPH_CPU_H_
#include "periph/dev_enums.h"
#include "cpu_conf.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Length of the CPU_ID in octets
*/
#define CPUID_LEN (12U)
/**
* @brief Overwrite the default gpio_t type definition
* @{
*/
#define HAVE_GPIO_T
typedef uint32_t gpio_t;
#define GPIO_PIN(x,y) ((gpio_t)((x<<4) | y))
/** @} */
#ifndef DOXYGEN
/**
* @brief Override GPIO modes
* @{
*/
#define HAVE_GPIO_MODE_T
typedef enum {
GPIO_IN = (GPIO_DIR_MODE_IN | (GPIO_PIN_TYPE_STD << 4)), /**< IN */
GPIO_IN_PD = (GPIO_DIR_MODE_IN | (GPIO_PIN_TYPE_STD_WPD << 4)), /**< IN with pull-down */
GPIO_IN_PU = (GPIO_DIR_MODE_IN | (GPIO_PIN_TYPE_STD_WPU << 4)), /**< IN with pull-up */
GPIO_OUT = (GPIO_DIR_MODE_OUT | (GPIO_PIN_TYPE_STD << 4)), /**< OUT (push-pull) */
GPIO_OD = (GPIO_DIR_MODE_OUT | (GPIO_PIN_TYPE_OD << 4)), /**< OD */
GPIO_OD_PU = (GPIO_DIR_MODE_OUT | (GPIO_PIN_TYPE_OD_WPU << 4)), /**< OD with pull-up */
} gpio_mode_t;
/** @} */
#endif /* ndef DOXYGEN */
/**
* @brief Override values for pull register configuration
* @{
*/
#define HAVE_GPIO_PP_T
typedef enum {
GPIO_NOPULL = GPIO_PIN_TYPE_STD, /**< do not use internal pull resistors */
GPIO_PULLUP = GPIO_PIN_TYPE_STD_WPU, /**< enable internal pull-up resistor */
GPIO_PULLDOWN = GPIO_PIN_TYPE_STD_WPD /**< enable internal pull-down resistor */
} gpio_pp_t;
/** @} */
/**
* @brief Override values for pin direction configuration
* @{
*/
#define HAVE_GPIO_DIR_T
typedef enum {
GPIO_DIR_IN = GPIO_DIR_MODE_IN, /**< configure pin as input */
GPIO_DIR_OUT = GPIO_DIR_MODE_OUT /**< configure pin as output */
} gpio_dir_t;
/** @} */
#ifndef DOXYGEN
/**
* @brief Override active flank configuration values
* @{
*/
#define HAVE_GPIO_FLANK_T
typedef enum {
GPIO_FALLING = GPIO_FALLING_EDGE, /**< emit interrupt on falling flank */
GPIO_RISING = GPIO_RISING_EDGE, /**< emit interrupt on rising flank */
GPIO_BOTH = GPIO_BOTH_EDGES /**< emit interrupt on both flanks */
} gpio_flank_t;
/** @} */
#endif /* ndef DOXYGEN */
/**
* @brief Available ports on the LM4F120
*/
enum {
PORT_A = 0, /**< port A */
PORT_B = 1, /**< port B */
PORT_C = 2, /**< port C */
PORT_D = 3, /**< port D */
PORT_E = 4, /**< port E */
PORT_F = 5, /**< port F */
};
/**
* @brief Override resolution options
*/
#ifndef DOXYGEN
#define HAVE_ADC_RES_T
typedef enum {
ADC_RES_6BIT = 0xa00, /**< not supported by hardware */
ADC_RES_8BIT = 0xb00, /**< not supported by hardware */
ADC_RES_10BIT = ADC_RES_10BIT_S, /**< ADC resolution: 10 bit */
ADC_RES_12BIT = ADC_RES_12BIT_S, /**< ADC resolution: 12 bit */
ADC_RES_14BIT = 0xc00, /**< not supported by hardware */
ADC_RES_16BIT = 0xd00, /**< not supported by hardware */
} adc_res_t;
#endif /* ndef DOXYGEN */
#ifdef __cplusplus
}
#endif
#endif /* PERIPH_CPU_H_ */
/** @} */