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sys: initial import of dbgpin module

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This commit is contained in:
Hauke Petersen 2020-09-15 14:43:09 +02:00
parent a68cfacdd4
commit 2d582cdd2e
3 changed files with 137 additions and 0 deletions
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1
makefiles/pseudomodules.inc.mk
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@ -20,6 +20,7 @@ PSEUDOMODULES += cortexm_fpu
PSEUDOMODULES += cortexm_svc
PSEUDOMODULES += cpu_check_address
PSEUDOMODULES += crypto_% # crypto_aes or crypto_3des
PSEUDOMODULES += dbgpin
PSEUDOMODULES += devfs_%
PSEUDOMODULES += dhcpv6_%
PSEUDOMODULES += ecc_%

5
sys/Makefile.dep
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@ -1118,4 +1118,9 @@ ifneq (,$(filter ecc_%,$(USEMODULE)))
USEMODULE += ecc
endif
ifneq (,$(filter dbgpin,$(USEMODULE)))
FEATURES_REQUIRED += periph_gpio
FEATURES_REQUIRED += dbgpin
endif
include $(RIOTBASE)/sys/test_utils/Makefile.dep

131
sys/include/dbgpin.h Normal file
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@ -0,0 +1,131 @@
/*
* Copyright (C) 2020 Freie Universität Berlin
*
* 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.
*/
/**
* @defgroup sys_dbgpin Direct pin control for debugging/profiling
* @ingroup sys
*
* @warning This module does not verify the given pin number, so make sure
* the pin numbers you use are actually configured!
*
* @{
* @file
* @brief GPIO wrapper for debugging/profiling purposes
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
*/
#ifndef DBGPIN_H
#define DBGPIN_H
#include "kernel_defines.h"
#include "periph/gpio.h"
#ifdef __cplusplus
extern "C"
{
#endif
#ifndef DBGPIN_PINS
#error Please specify the pins to use with the dbgpin module (DBGPIN_PINS)
#endif
// extern const gpio_t dbgpin_pins[];
/**
* @brief Set the given debug pin to HIGH
*
* @param[in] pin pin to set, pin number is offset to the list of defined
* debug pins in DBGPIN_PINS
*/
static inline void dbgpin_set(unsigned pin)
{
static const gpio_t dbgpin_pins[] = { DBGPIN_PINS };
gpio_set(dbgpin_pins[pin]);
}
/**
* @brief Set the given debug pin to LOW
*
* @param[in] pin pin to set, pin number is offset to the list of defined
* debug pins in DBGPIN_PINS
*/
static inline void dbgpin_clear(unsigned pin)
{
static const gpio_t dbgpin_pins[] = { DBGPIN_PINS };
gpio_clear(dbgpin_pins[pin]);
}
/**
* @brief Toggle the given debug pin
*
* @param[in] pin pin to set, pin number is offset to the list of defined
* debug pins in DBGPIN_PINS
*/
static inline void dbgpin_toggle(unsigned pin)
{
static const gpio_t dbgpin_pins[] = { DBGPIN_PINS };
gpio_toggle(dbgpin_pins[pin]);
}
/**
* @brief Output a pulse on the given debug pin (toggles the pin twice)
*
* @param[in] pin pin to set, pin number is offset to the list of defined
* debug pins in DBGPIN_PINS
*/
static inline void dbgpin_pulse(unsigned pin)
{
dbgpin_toggle(pin);
dbgpin_toggle(pin);
}
/**
* @brief Output a specified number of pulses on the given debug pin
*
* @param[in] pin pin to set, pin number is offset to the list of defined
* debug pins in DBGPIN_PINS
* @param[in] num number of pulses to output
*/
static inline void dbgpin_signal(unsigned pin, unsigned num)
{
for (unsigned i = 0; i < num; i++) {
dbgpin_pulse(pin);
}
}
/**
* @brief Get the number of configured debug pins
*
* @return number of configured debug pins
*/
static inline size_t dbgpin_count(void)
{
static const gpio_t dbgpin_pins[] = { DBGPIN_PINS };
return ARRAY_SIZE(dbgpin_pins);
}
/**
* @brief Initialize the configured input pins
*/
static inline void dbgpin_init(void)
{
static const gpio_t dbgpin_pins[] = { DBGPIN_PINS };
for (unsigned i = 0; i < ARRAY_SIZE(dbgpin_pins); i++) {
gpio_init(dbgpin_pins[i], GPIO_OUT);
gpio_clear(dbgpin_pins[i]);
}
}
#ifdef __cplusplus
}
#endif
#endif /* DBGPIN_H */
/** @} **/