Steve Karg
ddb2b43125
* Changed MS/TP master node self destination checks to be located in receive FSM * Changed MSTP zero configuration: modified comments for state transition names; modified next station increment; refactored the UUID rand() to not be required by common zero config implementation; added more unit tests. * Added another context to MS/TP user data to allow additional user data
58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
/**
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* @file
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* @brief Store and retrieve non-volatile data
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* @author Steve Karg <skarg@users.sourceforge.net>
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* @date 2013
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* @copyright SPDX-License-Identifier: MIT
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*/
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#ifndef NVM_DATA_H
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#define NVM_DATA_H
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#include <avr/eeprom.h>
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/* compatible functions could put in header to abstract more */
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#define nvm_write(dst, src, len) \
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eeprom_write_block((uint8_t *)(src),(uint8_t *)(dst), (size_t)(len))
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#define nvm_read(src, dst, len) \
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eeprom_read_block((uint8_t *)dst, (const uint8_t *)(src),(size_t)(len))
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/*=============== EEPROM ================*/
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/* define EEPROM signature version */
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#define NVM_SIGNATURE 0
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#define NVM_VERSION 1
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/* define the MAC, BAUD, MAX Master, Device Instance internal
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so that bootloader *could* use them. */
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/* note: MAC could come from DIP switch, or be in non-volatile memory */
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#define NVM_MAC_ADDRESS 2
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/* 9=9.6k, 19=19.2k, 38=38.4k, 57=57.6k, 76=76.8k, 115=115.2k */
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#define NVM_BAUD_K 3
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#define NVM_MAX_MASTER 4
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/* device instance is only 22 bits - easier if we use 32 bits */
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#define NVM_DEVICE_0 5
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#define NVM_DEVICE_1 6
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#define NVM_DEVICE_2 7
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#define NVM_DEVICE_3 8
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/* free space - 9..31 */
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/* BACnet Names - 32 bytes of data each */
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#define NVM_NAME_LENGTH(n) ((n)+0)
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#define NVM_NAME_ENCODING(n) ((n)+1)
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#define NVM_NAME_STRING(n) ((n)+2)
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#define NVM_NAME_SIZE 30
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#define NVM_NAME_OFFSET (1+1+NVM_NAME_SIZE)
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/* Device Name - starting offset */
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#define NVM_DEVICE_NAME 32
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/* Device Description - starting offset */
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#define NVM_DEVICE_DESCRIPTION \
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(NVM_DEVICE_NAME+NVM_NAME_OFFSET)
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/* Device Location - starting offset */
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#define NVM_DEVICE_LOCATION \
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(NVM_DEVICE_DESCRIPTION+NVM_NAME_OFFSET)
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/* free space 128..4096 */
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#endif
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