1 /* 2 * Copyright (c) 2019 ML!PA Consulting GmbH 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #define DT_DRV_COMPAT atmel_sam0_id 8 9 #include <soc.h> 10 #include <zephyr/drivers/hwinfo.h> 11 #include <string.h> 12 #include <zephyr/sys/byteorder.h> 13 14 struct sam0_uid { 15 uint32_t id[4]; 16 }; 17 z_impl_hwinfo_get_device_id(uint8_t * buffer,size_t length)18ssize_t z_impl_hwinfo_get_device_id(uint8_t *buffer, size_t length) 19 { 20 struct sam0_uid dev_id; 21 22 dev_id.id[0] = sys_cpu_to_be32(*(const uint32_t *) 23 DT_INST_REG_ADDR_BY_IDX(0, 0)); 24 dev_id.id[1] = sys_cpu_to_be32(*(const uint32_t *) 25 DT_INST_REG_ADDR_BY_IDX(0, 1)); 26 dev_id.id[2] = sys_cpu_to_be32(*(const uint32_t *) 27 DT_INST_REG_ADDR_BY_IDX(0, 2)); 28 dev_id.id[3] = sys_cpu_to_be32(*(const uint32_t *) 29 DT_INST_REG_ADDR_BY_IDX(0, 3)); 30 31 if (length > sizeof(dev_id.id)) { 32 length = sizeof(dev_id.id); 33 } 34 35 memcpy(buffer, dev_id.id, length); 36 37 return length; 38 } 39
