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This commit adds a 1wire subsystem.
Squashed commit of the following: Author: Gregory Nutt <gnutt@nuttx.org> Some cosmetic changes from coding style review. Author: Juha Niskanen <juha.niskanen@haltian.com> drivers/1wire: add 1-wire subsystem and ds28e17 driver
This commit is contained in:
Juha Niskanen
committed by
Gregory Nutt
Gregory Nutt
parent
b4c1ac0659
commit
797d9b1822
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,159 @@
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/****************************************************************************
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* drivers/1wire/1wire_crc.c
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*
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* Copyright (C) 2018 Haltian Ltd. All rights reserved.
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* Author: Juha Niskanen <juha.niskanen@haltian.com>
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*
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* Redistribution and use in source and binary forms, with or without
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||||||
|
* modification, are permitted provided that the following conditions
|
||||||
|
* are met:
|
||||||
|
*
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||||||
|
* 1. Redistributions of source code must retain the above copyright
|
||||||
|
* notice, this list of conditions and the following disclaimer.
|
||||||
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||||||
|
* notice, this list of conditions and the following disclaimer in
|
||||||
|
* the documentation and/or other materials provided with the
|
||||||
|
* distribution.
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||||||
|
* 3. Neither the name NuttX nor the names of its contributors may be
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|
* used to endorse or promote products derived from this software
|
||||||
|
* without specific prior written permission.
|
||||||
|
*
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||||||
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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||||||
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||||
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||||
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||||
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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||||||
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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||||||
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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||||||
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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||||||
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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||||||
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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|
* POSSIBILITY OF SUCH DAMAGE.
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|
*
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|
****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <stdint.h>
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#include <stdbool.h>
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#include <string.h>
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#include "1wire_internal.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/* Compute a Dallas Semiconductor 8 bit CRC. */
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uint8_t onewire_crc8(FAR const uint8_t *input, uint8_t len)
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{
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uint8_t crc = 0;
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while (len-- > 0)
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{
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int i;
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uint8_t inbyte = *input++;
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for (i = 0; i < 8; i++)
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{
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uint8_t mix = (crc ^ inbyte) & 0x01;
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crc >>= 1;
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if (mix)
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crc ^= 0x8c;
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inbyte >>= 1;
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}
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}
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return crc;
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}
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/* Compute a Dallas Semiconductor 16 bit CRC. This is used to check
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* the integrity of received data from many 1-wire devices.
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*
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* Note: the CRC-16 computed here is not what you'll get from the 1-wire
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* network, because:
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* - The CRC-16 is transmitted bitwise inverted.
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* - The binary representation of the return value may have a different
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* byte order than the two bytes you get from 1-wire due to endian-ness.
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*/
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uint16_t onewire_crc16(FAR const uint8_t *input, uint16_t len,
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uint16_t initial_crc)
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{
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uint16_t crc = initial_crc;
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while (len-- > 0)
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{
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int i;
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uint8_t inbyte = *input++;
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for (i = 0; i < 8; i++)
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{
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uint8_t mix = ((crc & 0xff) ^ inbyte) & 0x01;
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crc >>= 1;
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if (mix)
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{
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crc ^= 0xa001;
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}
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inbyte >>= 1;
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}
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}
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return crc;
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}
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/****************************************************************************
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* Name: onewire_valid_rom
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*
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* Description:
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* Check CRC-8 of received input
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*
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* Input Parameters:
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* rom - 64-bit rom code
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*
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* Returned Value:
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* true if CRC-8 of rom matches
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*
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****************************************************************************/
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bool onewire_valid_rom(uint64_t rom)
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{
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uint8_t crc;
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uint8_t buf[8];
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memcpy(buf, &rom, sizeof(buf));
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crc = onewire_crc8(buf, 7);
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return crc == buf[7];
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}
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/****************************************************************************
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* Name: onewire_check_crc16
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*
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* Description:
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* Check CRC-16 of received input
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*
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* Input Parameters:
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* input - Array of bytes to checksum
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* len - Length of input
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* inverted_crc - The two CRC16 bytes in the received data
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*
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* Returned Value:
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* true if CRC-16 matches
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*
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****************************************************************************/
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bool onewire_check_crc16(FAR const uint8_t *input, uint16_t len,
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FAR const uint8_t *inverted_crc)
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{
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uint16_t crc;
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crc = ~onewire_crc16(input, len, 0);
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return (crc & 0xff) == inverted_crc[0] && (crc >> 8) == inverted_crc[1];
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}
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@@ -0,0 +1,180 @@
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/****************************************************************************
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* drivers/1wire/1wire_internal.h
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*
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* Copyright (C) 2018 Haltian Ltd. All rights reserved.
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* Author: Juha Niskanen <juha.niskanen@haltian.com>
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*
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* Redistribution and use in source and binary forms, with or without
|
||||||
|
* modification, are permitted provided that the following conditions
|
||||||
|
* are met:
|
||||||
|
*
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||||||
|
* 1. Redistributions of source code must retain the above copyright
|
||||||
|
* notice, this list of conditions and the following disclaimer.
|
||||||
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||||||
|
* notice, this list of conditions and the following disclaimer in
|
||||||
|
* the documentation and/or other materials provided with the
|
||||||
|
* distribution.
|
||||||
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||||
|
* used to endorse or promote products derived from this software
|
||||||
|
* without specific prior written permission.
|
||||||
|
*
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||||||
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||||
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||||
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||||
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||||
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||||
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||||
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||||
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||||
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||||
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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||||||
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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|
* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __DRIVERS_1WIRE_1WIRE_INTERNAL_H
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#define __DRIVERS_1WIRE_1WIRE_INTERNAL_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdbool.h>
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#include <semaphore.h>
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/****************************************************************************
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* Public Types
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****************************************************************************/
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struct onewire_dev_s;
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struct onewire_sem_s
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{
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sem_t sem;
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pid_t holder; /* The current holder of the semaphore */
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int16_t count; /* Number of counts held */
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};
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struct onewire_master_s
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{
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FAR struct onewire_dev_s *dev; /* 1-Wire lower half */
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struct onewire_sem_s devsem; /* Re-entrant semaphore */
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int nslaves; /* Number of 1-wire slaves */
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int maxslaves; /* Maximum number of 1-wire slaves */
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bool insearch; /* If we are in middle of 1-wire search */
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};
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struct onewire_slave_s
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{
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FAR struct onewire_master_s *master; /* Slave's bus master */
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uint64_t romcode; /* Unique ROM id in bus */
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};
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/* CRC helpers from 1wire_crc.c */
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uint8_t onewire_crc8(FAR const uint8_t *input, uint8_t len);
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uint16_t onewire_crc16(FAR const uint8_t *input, uint16_t len,
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uint16_t initial_crc);
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bool onewire_valid_rom(uint64_t rom);
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bool onewire_check_crc16(FAR const uint8_t *input, uint16_t len,
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FAR const uint8_t *inverted_crc);
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/* Rest are from 1wire.c */
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void onewire_sem_wait(FAR struct onewire_master_s *master);
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void onewire_sem_post(FAR struct onewire_master_s *master);
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int onewire_addslave(FAR struct onewire_master_s *master,
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FAR struct onewire_slave_s *slave);
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int onewire_removeslave(FAR struct onewire_master_s *master,
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FAR struct onewire_slave_s *slave);
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|
/****************************************************************************
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* Name: onewire_reset_resume
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*
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|
* Description:
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|
*
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|
****************************************************************************/
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|
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int onewire_reset_resume(FAR struct onewire_master_s *master);
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|
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|
/****************************************************************************
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|
* Name: onewire_reset_select
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|
*
|
||||||
|
* Description:
|
||||||
|
*
|
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|
****************************************************************************/
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|
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||||||
|
int onewire_reset_select(FAR struct onewire_slave_s *slave);
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|
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|
/****************************************************************************
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|
* Name: onewire_triplet
|
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|
*
|
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|
* Description:
|
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|
* Used by 1-wire search algorithm. Reads two bits and writes
|
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|
* one based on comparison of read bits.
|
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|
*
|
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|
* Input Parameters:
|
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|
* search_bit - Bit to write if both id_bit and cmp_id_bit match
|
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|
*
|
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|
* Output Parameters:
|
||||||
|
* taken_bit - Bit indicating the direction where the search is
|
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|
* progressing.
|
||||||
|
*
|
||||||
|
* Return Value:
|
||||||
|
* Number of valid bits or negative on error.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
int onewire_triplet(FAR struct onewire_master_s *master,
|
||||||
|
uint8_t search_bit,
|
||||||
|
FAR uint8_t *taken_bit);
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Name: onewire_search
|
||||||
|
*
|
||||||
|
* Description:
|
||||||
|
* Search all devices from a 1-wire network. This is the 1-wire search
|
||||||
|
* algorithm from Maxim Application Note 187.
|
||||||
|
*
|
||||||
|
* Input Parameters:
|
||||||
|
* master - Pointer to the allocated 1-wire interface
|
||||||
|
* family - Limit search to devices of matching family
|
||||||
|
* alarmonly - Limit search to devices on alarm state
|
||||||
|
* cb_search - Callback to call on each device found
|
||||||
|
* arg - Argument passed to cb_search
|
||||||
|
*
|
||||||
|
* Return Value:
|
||||||
|
* Number of slaves present and matching family.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
int onewire_search(FAR struct onewire_master_s *master,
|
||||||
|
int family,
|
||||||
|
bool alarmonly,
|
||||||
|
CODE void (*cb_search)(int family, uint64_t romcode, FAR void *arg),
|
||||||
|
FAR void *arg);
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Name: onewire_initialize
|
||||||
|
*
|
||||||
|
* Description:
|
||||||
|
* Return 1-wire bus master from 1-wire lower half device.
|
||||||
|
*
|
||||||
|
* Input Parameters:
|
||||||
|
* dev - Pointer to the allocated 1-wire lower half
|
||||||
|
* maxslaves - Maximum number of 1-wire slave devices
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
FAR struct onewire_master_s *
|
||||||
|
onewire_initialize(FAR struct onewire_dev_s *dev, int maxslaves);
|
||||||
|
|
||||||
|
#endif /* __DRIVERS_1WIRE_1WIRE_INTERNAL_H */
|
||||||
@@ -0,0 +1,15 @@
|
|||||||
|
#
|
||||||
|
# For a description of the syntax of this configuration file,
|
||||||
|
# see the file kconfig-language.txt in the NuttX tools repository.
|
||||||
|
#
|
||||||
|
|
||||||
|
if 1WIRE
|
||||||
|
|
||||||
|
config 1WIRE_DS28E17
|
||||||
|
bool "DS28E17 1-wire to I2C converter"
|
||||||
|
default n
|
||||||
|
depends on I2C
|
||||||
|
---help---
|
||||||
|
Enable support for the Maxim DS28E17 1-wire to I2C converter
|
||||||
|
|
||||||
|
endif # 1WIRE
|
||||||
@@ -0,0 +1,49 @@
|
|||||||
|
############################################################################
|
||||||
|
# drivers/1wire/Make.defs
|
||||||
|
#
|
||||||
|
# Copyright (C) 2018 Gregory Nutt. All rights reserved.
|
||||||
|
# Author: Gregory Nutt <gnutt@nuttx.org>
|
||||||
|
#
|
||||||
|
# Redistribution and use in source and binary forms, with or without
|
||||||
|
# modification, are permitted provided that the following conditions
|
||||||
|
# are met:
|
||||||
|
#
|
||||||
|
# 1. Redistributions of source code must retain the above copyright
|
||||||
|
# notice, this list of conditions and the following disclaimer.
|
||||||
|
# 2. Redistributions in binary form must reproduce the above copyright
|
||||||
|
# notice, this list of conditions and the following disclaimer in
|
||||||
|
# the documentation and/or other materials provided with the
|
||||||
|
# distribution.
|
||||||
|
# 3. Neither the name NuttX nor the names of its contributors may be
|
||||||
|
# used to endorse or promote products derived from this software
|
||||||
|
# without specific prior written permission.
|
||||||
|
#
|
||||||
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||||
|
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||||
|
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||||
|
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||||
|
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||||
|
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||||
|
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||||
|
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||||
|
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||||
|
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||||
|
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||||
|
# POSSIBILITY OF SUCH DAMAGE.
|
||||||
|
#
|
||||||
|
############################################################################
|
||||||
|
|
||||||
|
ifeq ($(CONFIG_1WIRE),y)
|
||||||
|
|
||||||
|
CSRCS += 1wire.c 1wire_crc.c
|
||||||
|
|
||||||
|
ifeq ($(CONFIG_1WIRE_DS28E17),y)
|
||||||
|
CSRCS += ds28e17.c
|
||||||
|
endif
|
||||||
|
|
||||||
|
# Include 1wire device driver build support
|
||||||
|
|
||||||
|
DEPPATH += --dep-path 1wire
|
||||||
|
VPATH += :1wire
|
||||||
|
CFLAGS += ${shell $(INCDIR) $(INCDIROPT) "$(CC)" $(TOPDIR)$(DELIM)drivers$(DELIM)1wire}
|
||||||
|
endif
|
||||||
File diff suppressed because it is too large
Load Diff
@@ -477,4 +477,12 @@ menuconfig DRIVERS_CONTACTLESS
|
|||||||
|
|
||||||
source drivers/contactless/Kconfig
|
source drivers/contactless/Kconfig
|
||||||
|
|
||||||
|
menuconfig 1WIRE
|
||||||
|
bool "1wire Device Support"
|
||||||
|
default n
|
||||||
|
---help---
|
||||||
|
Drivers for various 1wire devices.
|
||||||
|
|
||||||
|
source drivers/1wire/Kconfig
|
||||||
|
|
||||||
source drivers/syslog/Kconfig
|
source drivers/syslog/Kconfig
|
||||||
|
|||||||
@@ -78,6 +78,7 @@ include usbmonitor$(DELIM)Make.defs
|
|||||||
include video$(DELIM)Make.defs
|
include video$(DELIM)Make.defs
|
||||||
include wireless$(DELIM)Make.defs
|
include wireless$(DELIM)Make.defs
|
||||||
include contactless$(DELIM)Make.defs
|
include contactless$(DELIM)Make.defs
|
||||||
|
include 1wire$(DELIM)Make.defs
|
||||||
|
|
||||||
ifneq ($(CONFIG_NFILE_DESCRIPTORS),0)
|
ifneq ($(CONFIG_NFILE_DESCRIPTORS),0)
|
||||||
CSRCS += dev_null.c dev_zero.c
|
CSRCS += dev_null.c dev_zero.c
|
||||||
|
|||||||
@@ -0,0 +1,139 @@
|
|||||||
|
/****************************************************************************
|
||||||
|
* include/nuttx/1wire/ds28e17.h
|
||||||
|
*
|
||||||
|
* Copyright (C) 2018 Haltian Ltd. All rights reserved.
|
||||||
|
* Author: Juha Niskanen <juha.niskanen@haltian.com>
|
||||||
|
*
|
||||||
|
* Redistribution and use in source and binary forms, with or without
|
||||||
|
* modification, are permitted provided that the following conditions
|
||||||
|
* are met:
|
||||||
|
*
|
||||||
|
* 1. Redistributions of source code must retain the above copyright
|
||||||
|
* notice, this list of conditions and the following disclaimer.
|
||||||
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||||||
|
* notice, this list of conditions and the following disclaimer in
|
||||||
|
* the documentation and/or other materials provided with the
|
||||||
|
* distribution.
|
||||||
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||||
|
* used to endorse or promote products derived from this software
|
||||||
|
* without specific prior written permission.
|
||||||
|
*
|
||||||
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||||
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||||
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||||
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||||
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||||
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING,
|
||||||
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||||
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||||
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||||
|
* LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||||
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||||
|
* POSSIBILITY OF SUCH DAMAGE.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
#ifndef __INCLUDE_NUTTX_1WIRE_DS28E17_H
|
||||||
|
#define __INCLUDE_NUTTX_1WIRE_DS28E17_H
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Included Files
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
#include <nuttx/config.h>
|
||||||
|
|
||||||
|
#include <stdint.h>
|
||||||
|
#include <nuttx/drivers/1wire.h>
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Pre-processor Definitions
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
/* Default how many converters in a bus. */
|
||||||
|
|
||||||
|
#define DS_DEFAULT_MAXSLAVES 10
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Public Types
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
struct ds28e17_dev_s;
|
||||||
|
struct i2c_master_s;
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Public Functions
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Name: ds28e17_search
|
||||||
|
*
|
||||||
|
* Description:
|
||||||
|
* Search all DS28E17 devices from a 1-wire network.
|
||||||
|
*
|
||||||
|
* Input Parameters:
|
||||||
|
* priv - Pointer to the associated DS28E17
|
||||||
|
* cb_search - Callback to call on each device found
|
||||||
|
* arg - Argument passed to cb_search
|
||||||
|
*
|
||||||
|
* Return Value:
|
||||||
|
* Number of DS28E17 devices present.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
int ds28e17_search(FAR struct ds28e17_dev_s *priv,
|
||||||
|
CODE void (*cb_search)(int family, uint64_t romcode, FAR void *arg),
|
||||||
|
FAR oid *arg);
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Name: ds28e17_lower_half
|
||||||
|
*
|
||||||
|
* Description:
|
||||||
|
* Initialize the lower half of the DS28E17 by creating a i2c_master_s
|
||||||
|
* for the virtual i2c master and link it to the associated DS28E17 and
|
||||||
|
* its port.
|
||||||
|
*
|
||||||
|
* Input Parameters:
|
||||||
|
* priv - Pointer to the associated DS28E17
|
||||||
|
* romcode - The unique 64-bit address in 1-wire network.
|
||||||
|
* Use zero for skip-ROM mode.
|
||||||
|
*
|
||||||
|
* Returned Value:
|
||||||
|
* i2c device instance; NULL on failure.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
FAR struct i2c_master_s *ds28e17_lower_half(FAR struct ds28e17_dev_s *priv,
|
||||||
|
uint64_t romcode);
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Name: ds28e17_lower_half_unregister
|
||||||
|
*
|
||||||
|
* Description:
|
||||||
|
* Put back the lower half of the DS28E17.
|
||||||
|
*
|
||||||
|
* Input Parameters:
|
||||||
|
* priv - Pointer to the associated DS28E17
|
||||||
|
* i2cdev - i2c device instance from ds28e17_lower_half()
|
||||||
|
*
|
||||||
|
* Returned Value:
|
||||||
|
* Zero on success; a negated errno value on failure.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
int ds28e17_lower_half_unregister(FAR struct ds28e17_dev_s *priv,
|
||||||
|
FAR struct i2c_master_s *i2cdev);
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Name: ds28e17_initialize
|
||||||
|
*
|
||||||
|
* Description:
|
||||||
|
* Returns a common DS28E17 device from 1-wire lower half device
|
||||||
|
*
|
||||||
|
* Input Parameters:
|
||||||
|
* dev - The allocated 1-wire lower half
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
FAR struct ds28e17_dev_s *ds28e17_initialize(FAR struct onewire_dev_s *dev);
|
||||||
|
|
||||||
|
#endif /* __INCLUDE_NUTTX_1WIRE_DS28E17_H */
|
||||||
@@ -48,6 +48,18 @@
|
|||||||
* Pre-processor Definitions
|
* Pre-processor Definitions
|
||||||
****************************************************************************/
|
****************************************************************************/
|
||||||
|
|
||||||
|
/* Supported 1-Wire commands */
|
||||||
|
|
||||||
|
#define ONEWIRE_CMD_SEARCH 0xf0
|
||||||
|
#define ONEWIRE_CMD_ALARM_SEARCH 0xec
|
||||||
|
#define ONEWIRE_CMD_SKIP_ROM 0xcc
|
||||||
|
#define ONEWIRE_CMD_COPY_SCRATCHPAD 0x48
|
||||||
|
#define ONEWIRE_CMD_WRITE_SCRATCHPAD 0x4e
|
||||||
|
#define ONEWIRE_CMD_READ_SCRATCHPAD 0xbe
|
||||||
|
#define ONEWIRE_CMD_READ_ROM 0x33
|
||||||
|
#define ONEWIRE_CMD_MATCH_ROM 0x55
|
||||||
|
#define ONEWIRE_CMD_RESUME 0xa5
|
||||||
|
|
||||||
/****************************************************************************
|
/****************************************************************************
|
||||||
* Name: ONEWIRE_RESET
|
* Name: ONEWIRE_RESET
|
||||||
*
|
*
|
||||||
|
|||||||
@@ -217,10 +217,15 @@ static int btnet_advertise(FAR struct net_driver_s *dev)
|
|||||||
|
|
||||||
DEBUGASSERT(dev != NULL && dev->d_private != NULL);
|
DEBUGASSERT(dev != NULL && dev->d_private != NULL);
|
||||||
|
|
||||||
/* Get the 6-byte local address from the device */
|
/* Get the 6-byte local address from the device.
|
||||||
#warning Missing logic
|
*
|
||||||
|
* REVISIT: The use of the g_btdev global restricts the implementation to
|
||||||
|
* a single Bluetooth device.
|
||||||
|
*/
|
||||||
|
|
||||||
/* Set the MAC address using that address */
|
addr = g_btdev.bdaddr.val
|
||||||
|
|
||||||
|
/* Set the MAC address using 6-byte local address from the device. */
|
||||||
|
|
||||||
BLUETOOTH_ADDRCOPY(dev->d_mac.radio.nv_addr, addr);
|
BLUETOOTH_ADDRCOPY(dev->d_mac.radio.nv_addr, addr);
|
||||||
dev->d_mac.radio.nv_addrlen = BLUETOOTH_ADDRSIZE;
|
dev->d_mac.radio.nv_addrlen = BLUETOOTH_ADDRSIZE;
|
||||||
@@ -237,6 +242,7 @@ static int btnet_advertise(FAR struct net_driver_s *dev)
|
|||||||
dev->d_ipv6addr[6] = (uint16_t)addr[2] << 8 | (uint16_t)addr[3];
|
dev->d_ipv6addr[6] = (uint16_t)addr[2] << 8 | (uint16_t)addr[3];
|
||||||
dev->d_ipv6addr[7] = (uint16_t)addr[4] << 8 | (uint16_t)addr[5];
|
dev->d_ipv6addr[7] = (uint16_t)addr[4] << 8 | (uint16_t)addr[5];
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
return OK;
|
return OK;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|||||||
Reference in New Issue
Block a user