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38 lines
878 B
38 lines
878 B
/* |
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* Copyright (c) 2019 ML!PA Consulting GmbH |
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* |
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* SPDX-License-Identifier: Apache-2.0 |
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*/ |
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#define DT_DRV_COMPAT atmel_sam0_id |
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#include <soc.h> |
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#include <zephyr/drivers/hwinfo.h> |
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#include <string.h> |
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#include <zephyr/sys/byteorder.h> |
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struct sam0_uid { |
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uint32_t id[4]; |
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}; |
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ssize_t z_impl_hwinfo_get_device_id(uint8_t *buffer, size_t length) |
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{ |
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struct sam0_uid dev_id; |
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dev_id.id[0] = sys_cpu_to_be32(*(const uint32_t *) |
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DT_INST_REG_ADDR_BY_IDX(0, 0)); |
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dev_id.id[1] = sys_cpu_to_be32(*(const uint32_t *) |
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DT_INST_REG_ADDR_BY_IDX(0, 1)); |
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dev_id.id[2] = sys_cpu_to_be32(*(const uint32_t *) |
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DT_INST_REG_ADDR_BY_IDX(0, 2)); |
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dev_id.id[3] = sys_cpu_to_be32(*(const uint32_t *) |
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DT_INST_REG_ADDR_BY_IDX(0, 3)); |
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if (length > sizeof(dev_id.id)) { |
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length = sizeof(dev_id.id); |
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} |
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memcpy(buffer, dev_id.id, length); |
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return length; |
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}
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