drivers: Add hwinfo API
This commit adds a new hardware info API. With this API it is possible to read out the device ID. Signed-off-by: Alexander Wachter <alexander.wachter@student.tugraz.at>
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7 changed files with 105 additions and 0 deletions
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@ -29,6 +29,7 @@ add_subdirectory_if_kconfig(watchdog)
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add_subdirectory_if_kconfig(wifi)
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add_subdirectory_if_kconfig(can)
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add_subdirectory_if_kconfig(audio)
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add_subdirectory_if_kconfig(hwinfo)
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add_subdirectory_ifdef(CONFIG_FLASH_HAS_DRIVER_ENABLED flash)
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add_subdirectory_ifdef(CONFIG_SERIAL_HAS_DRIVER serial)
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@ -85,4 +85,6 @@ source "drivers/audio/Kconfig"
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source "drivers/neural_net/Kconfig"
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source "drivers/hwinfo/Kconfig"
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endmenu
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2
drivers/hwinfo/CMakeLists.txt
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2
drivers/hwinfo/CMakeLists.txt
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@ -0,0 +1,2 @@
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zephyr_sources_ifdef(CONFIG_USERSPACE hwinfo_handlers.c)
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zephyr_sources_ifdef(CONFIG_HWINFO hwinfo_weak_impl.c)
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16
drivers/hwinfo/Kconfig
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drivers/hwinfo/Kconfig
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@ -0,0 +1,16 @@
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# Kconfig -HW Info driver configuration options
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#
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# Copyright (c) 2019 Alexander Wachter
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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menuconfig HWINFO
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bool "Hardware Information driver"
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help
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Enable hwinfo driver.
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if HWINFO
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endif
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15
drivers/hwinfo/hwinfo_handlers.c
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drivers/hwinfo/hwinfo_handlers.c
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@ -0,0 +1,15 @@
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/*
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* Copyright (c) 2018 Alexander Wachter
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <syscall_handler.h>
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#include <hwinfo.h>
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Z_SYSCALL_HANDLER(hwinfo_get_device_id, buffer, length) {
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Z_OOPS(Z_SYSCALL_MEMORY_WRITE(buffer, length));
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return _impl_hwinfo_get_device_id((u8_t *)buffer, (size_t)length);
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}
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12
drivers/hwinfo/hwinfo_weak_impl.c
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drivers/hwinfo/hwinfo_weak_impl.c
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/*
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* Copyright (c) 2018 Alexander Wachter
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <hwinfo.h>
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ssize_t __weak _impl_hwinfo_get_device_id(u8_t *buffer, size_t length)
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{
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return -ENOTSUP;
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}
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57
include/hwinfo.h
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include/hwinfo.h
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@ -0,0 +1,57 @@
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/**
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* @file
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*
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* @brief Public APIs to get device Information.
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*/
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/*
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* Copyright (c) 2018 Alexander Wachter
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_INCLUDE_HWINFO_H_
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#define ZEPHYR_INCLUDE_HWINFO_H_
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#include <zephyr/types.h>
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#include <sys/types.h>
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#include <stddef.h>
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#include <errno.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Device ID
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* @{
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*/
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/**
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* @brief Copy the device id to a buffer
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*
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* This routine copies "length" number of bytes of the device ID to the buffer.
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* If the device ID is smaller then length, the rest of the buffer is left unchanged.
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* The ID depends on the hardware and is not guaranteed unique.
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*
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* @param buffer Buffer to write the ID to.
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* @param length Max length of the buffer.
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*
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* @retval size of the device ID copied or negative on error.
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*/
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__syscall ssize_t hwinfo_get_device_id(u8_t *buffer, size_t length);
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ssize_t _impl_hwinfo_get_device_id(u8_t *buffer, size_t length);
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/**
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* @}
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*/
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#ifdef __cplusplus
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}
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#endif
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#include <syscalls/hwinfo.h>
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#endif /* ZEPHYR_INCLUDE_HWINFO_H_ */
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