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sys/bus: add system buses

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This commit is contained in:
Benjamin Valentin 2020-09-08 01:16:45 +02:00
parent d9598a0f54
commit 7e069290a0
7 changed files with 123 additions and 0 deletions
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1
makefiles/pseudomodules.inc.mk
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@ -127,6 +127,7 @@ PSEUDOMODULES += stm32_eth_auto
PSEUDOMODULES += stm32_eth_link_up
PSEUDOMODULES += suit_transport_%
PSEUDOMODULES += suit_storage_%
PSEUDOMODULES += sys_bus_%
PSEUDOMODULES += wakaama_objects_%
PSEUDOMODULES += wifi_enterprise
PSEUDOMODULES += xtimer_on_ztimer

3
sys/Makefile
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@ -158,6 +158,9 @@ endif
ifneq (,$(filter suit%,$(USEMODULE)))
DIRS += suit
endif
ifneq (,$(filter sys_bus,$(USEMODULE)))
DIRS += bus
endif
ifneq (,$(filter tcp,$(USEMODULE)))
DIRS += net/transport_layer/tcp
endif

5
sys/Makefile.dep
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@ -44,6 +44,11 @@ ifneq (,$(filter crypto_%,$(USEMODULE)))
USEMODULE += crypto
endif
ifneq (,$(filter sys_bus_%,$(USEMODULE)))
USEMODULE += sys_bus
USEMODULE += core_msg_bus
endif
ifneq (,$(filter rtt_cmd,$(USEMODULE)))
FEATURES_REQUIRED += periph_rtt
endif

5
sys/auto_init/auto_init.c
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@ -58,6 +58,11 @@ void auto_init(void)
extern void auto_init_event_thread(void);
auto_init_event_thread();
}
if (IS_USED(MODULE_SYS_BUS)) {
LOG_DEBUG("Auto init system buses.\n");
extern void auto_init_sys_bus(void);
auto_init_sys_bus();
}
if (IS_USED(MODULE_MCI)) {
LOG_DEBUG("Auto init mci.\n");
extern void mci_initialize(void);

3
sys/bus/Makefile Normal file
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@ -0,0 +1,3 @@
MODULE = sys_bus
include $(RIOTBASE)/Makefile.base

29
sys/bus/sys_bus_init.c Normal file
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@ -0,0 +1,29 @@
/*
* Copyright (C) 2020 ML!PA Consulting GmbH
*
* 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 sys_bus
* @{
*
* @file
* @brief System Buses
*
* @author Benjamin Valentin <benjamin.valentin@ml-pa.com>
* @}
*/
#include "sys/bus.h"
msg_bus_t _sys_bus[SYS_BUS_NUMOF];
void auto_init_sys_bus(void)
{
for (unsigned i = 0; i < SYS_BUS_NUMOF; ++i) {
msg_bus_init(&_sys_bus[i]);
}
}

77
sys/include/sys/bus.h Normal file
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@ -0,0 +1,77 @@
/*
* Copyright (C) 2020 ML!PA Consulting GmbH
*
* 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 sys
* @defgroup sys_bus System Buses for common events
* @{
*
* @file
* @brief This provides System Buses for common events.
*
* @warning Bus Events will be lost if receiver message queue is full.
*
* @author Benjamin Valentin <benjamin.valentin@ml-pa.com>
*/
#ifndef SYS_BUS_H
#define SYS_BUS_H
#include <assert.h>
#include "msg_bus.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief System Bus types
*/
typedef enum {
#if MODULE_SYS_BUS_POWER
SYS_BUS_POWER, /**< Events related to system power */
#endif
SYS_BUS_NUMOF /**< Number of enabled system buses */
} sys_bus_t;
/**
* @brief Power Bus Events
*/
typedef enum {
/**
* @brief Supply voltage fallen below threshold
*/
SYS_BUS_POWER_EVENT_LOW_VOLTAGE,
/* add more if needed, but not more than 32 */
} sys_bus_power_event_t;
/**
* @brief The System Bus array - do not use directly
*/
extern msg_bus_t _sys_bus[SYS_BUS_NUMOF];
/**
* @brief Get a System Bus for a category of events.
*
* @param[in] bus The event category of the the user
* is interested in
*
* @return The message bus for those events
*/
static inline msg_bus_t *sys_bus_get(sys_bus_t bus)
{
return &_sys_bus[bus];
}
#ifdef __cplusplus
}
#endif
#endif /* SYS_BUS_H */
/** @} */