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drivers: hwinfo: add driver support for STM32 device ID

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Add driver support for STM32 ID device.
This device has an ID of 12 bytes.

Signed-off-by: Alexander Wachter <alexander.wachter@student.tugraz.at>
This commit is contained in:
Alexander Wachter 2019-01-07 15:38:41 +01:00 • committed by Anas Nashif
commit 8f3e6ab5d2
3 changed files with 47 additions and 0 deletions
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2
drivers/hwinfo/CMakeLists.txt
View file

@ -1,2 +1,4 @@
zephyr_sources_ifdef(CONFIG_USERSPACE hwinfo_handlers.c)
zephyr_sources_ifdef(CONFIG_HWINFO hwinfo_weak_impl.c)
zephyr_sources_ifdef(CONFIG_HWINFO_STM32 hwinfo_stm32.c)

8
drivers/hwinfo/Kconfig
View file

@ -13,4 +13,12 @@ menuconfig HWINFO
if HWINFO
config HWINFO_STM32
bool "STM32 hwinfo"
default y
depends on (SOC_SERIES_STM32F0X || SOC_SERIES_STM32F3X || \
SOC_SERIES_STM32L4X || SOC_SERIES_STM32F7X)
help
Enable STM32 hwinfo driver.
endif

37
drivers/hwinfo/hwinfo_stm32.c Normal file
View file

@ -0,0 +1,37 @@
/*
* Copyright (c) 2018 Alexander Wachter
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <soc.h>
#include <hwinfo.h>
#include <string.h>
#if !defined(CONFIG_SOC_SERIES_STM32F0X) && \
!defined(CONFIG_SOC_SERIES_STM32F3X) && \
!defined(CONFIG_SOC_SERIES_STM32L4X) && \
!defined(CONFIG_SOC_SERIES_STM32F7X)
#error ID only available on STM32F0, STM32F3, STM32L4 and STM32F7 series
#endif
struct stm32_uid {
u32_t id[3];
};
ssize_t _impl_hwinfo_get_device_id(u8_t *buffer, size_t length)
{
struct stm32_uid dev_id;
dev_id.id[0] = HAL_GetUIDw0();
dev_id.id[1] = HAL_GetUIDw1();
dev_id.id[2] = HAL_GetUIDw2();
if (length > sizeof(dev_id.id)) {
length = sizeof(dev_id.id);
}
memcpy(buffer, dev_id.id, length);
return length;
}