| /* |
| * Copyright (c) 2019 Alexander Wachter |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <hwinfo.h> |
| #include <string.h> |
| #include <fsl_sim.h> |
| |
| #if defined(SIM_UIDH) |
| #define HWINFO_DEVICE_ID_LENGTH_H 1 |
| #else |
| #define HWINFO_DEVICE_ID_LENGTH_H 0 |
| #endif |
| #if (defined(FSL_FEATURE_SIM_HAS_UIDM) && FSL_FEATURE_SIM_HAS_UIDM) |
| #define HWINFO_DEVICE_ID_LENGTH_M 1 |
| #else |
| #define HWINFO_DEVICE_ID_LENGTH_M 2 |
| #endif |
| #define HWINFO_DEVICE_ID_LENGTH_L 1 |
| |
| #define HWINFO_DEVICE_ID_LENGTH_TOTAL (HWINFO_DEVICE_ID_LENGTH_L + \ |
| HWINFO_DEVICE_ID_LENGTH_M + \ |
| HWINFO_DEVICE_ID_LENGTH_H) |
| |
| struct kinetis_uid { |
| u32_t id[HWINFO_DEVICE_ID_LENGTH_TOTAL]; |
| }; |
| |
| ssize_t _impl_hwinfo_get_device_id(u8_t *buffer, size_t length) |
| { |
| struct kinetis_uid dev_id; |
| |
| dev_id.id[0] = SIM->UIDL; |
| #if (defined(FSL_FEATURE_SIM_HAS_UIDM) && FSL_FEATURE_SIM_HAS_UIDM) |
| dev_id.id[1] = SIM->UIDM; |
| #else |
| dev_id.id[1] = SIM->UIDML; |
| dev_id.id[2] = SIM->UIDMH; |
| #if defined(SIM_UIDH) |
| dev_id.id[3] = SIM->UIDH; |
| #endif /* SIM_UIDH */ |
| #endif /* defined(FSL_FEATURE_SIM_HAS_UIDM) && FSL_FEATURE_SIM_HAS_UIDM */ |
| |
| if (length > sizeof(dev_id.id)) { |
| length = sizeof(dev_id.id); |
| } |
| |
| memcpy(buffer, dev_id.id, length); |
| |
| return length; |
| } |