zephyr/drivers/hwinfo/hwinfo_stm32.c
Anas Nashif f901e26de9 cleanup: include/: move hwinfo.h to drivers/hwinfo.h
move hwinfo.h to drivers/hwinfo.h and
create a shim for backward-compatibility.

No functional changes to the headers.
A warning in the shim can be controlled with CONFIG_COMPAT_INCLUDES.

Related to #16539

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-06-27 22:55:49 -04:00

31 lines
517 B
C

/*
* Copyright (c) 2018 Alexander Wachter
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <soc.h>
#include <drivers/hwinfo.h>
#include <string.h>
struct stm32_uid {
u32_t id[3];
};
ssize_t z_impl_hwinfo_get_device_id(u8_t *buffer, size_t length)
{
struct stm32_uid dev_id;
dev_id.id[0] = LL_GetUID_Word0();
dev_id.id[1] = LL_GetUID_Word1();
dev_id.id[2] = LL_GetUID_Word2();
if (length > sizeof(dev_id.id)) {
length = sizeof(dev_id.id);
}
memcpy(buffer, dev_id.id, length);
return length;
}