| /* |
| * Copyright (c) 2016, The OpenThread Authors. |
| * All rights reserved. |
| * |
| * 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 of the copyright holder 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 HOLDER 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. |
| */ |
| |
| /** |
| * @file |
| * This file implements the OpenThread platform abstraction for non-volatile storage of |
| * settings on K32W platform. It has been modified and optimized from the original |
| * Open Thread settings implementation to work with K32W's flash particularities. |
| * |
| */ |
| |
| #include <assert.h> |
| #include <stddef.h> |
| #include <stdlib.h> |
| |
| #include <openthread-core-config.h> |
| |
| #include <openthread/instance.h> |
| #include <openthread/platform/settings.h> |
| |
| #include <string.h> |
| #include "utils/code_utils.h" |
| |
| #include "EmbeddedTypes.h" |
| #include "PDM.h" |
| |
| #define pdmBufferSize 512 |
| #define NVM_START_ID 0x4F00 |
| |
| /* WARNING - the defines below must be in sync with OT NVM datasets from Settings.hpp */ |
| #define NVM_MAX_ID 7 |
| |
| static uint8_t sPdmBuffer[pdmBufferSize] __attribute__((aligned(4))) = {0}; |
| |
| static otError addSetting(otInstance * aInstance, |
| uint16_t aKey, |
| bool aIndex0, |
| const uint8_t *aValue, |
| uint16_t aValueLength); |
| |
| static otError addSetting(otInstance * aInstance, |
| uint16_t aKey, |
| bool aIndex0, |
| const uint8_t *aValue, |
| uint16_t aValueLength) |
| |
| { |
| otError error = OT_ERROR_NONE; |
| PDM_teStatus pdmStatus; |
| uint16_t bytesRead; |
| |
| otEXPECT_ACTION((pdmBufferSize > aValueLength + sizeof(uint16_t)), error = OT_ERROR_NO_BUFS); |
| |
| if (aIndex0) |
| { |
| /* save the lenght of the first record element at the start of the record so we can know |
| if the record contains multiple entries of a size or just a single entry */ |
| memcpy(sPdmBuffer, (uint8_t *)&aValueLength, sizeof(uint16_t)); |
| memcpy(sPdmBuffer + sizeof(uint16_t), (uint8_t *)aValue, aValueLength); |
| |
| pdmStatus = PDM_eSaveRecordData(aKey + NVM_START_ID, sPdmBuffer, aValueLength + sizeof(uint16_t)); |
| otEXPECT_ACTION((PDM_E_STATUS_OK == pdmStatus), error = OT_ERROR_NO_BUFS); |
| } |
| else |
| { |
| pdmStatus = PDM_eReadDataFromRecord(aKey + NVM_START_ID, sPdmBuffer, pdmBufferSize, &bytesRead); |
| otEXPECT_ACTION((PDM_E_STATUS_OK == pdmStatus), error = OT_ERROR_NOT_FOUND); |
| otEXPECT_ACTION((pdmBufferSize > aValueLength + bytesRead), error = OT_ERROR_NO_BUFS); |
| |
| memcpy(sPdmBuffer + bytesRead, (uint8_t *)aValue, aValueLength); |
| |
| pdmStatus = PDM_eSaveRecordData(aKey + NVM_START_ID, sPdmBuffer, aValueLength + bytesRead); |
| otEXPECT_ACTION((PDM_E_STATUS_OK == pdmStatus), error = OT_ERROR_NO_BUFS); |
| } |
| |
| exit: |
| return error; |
| } |
| |
| // settings API |
| void otPlatSettingsInit(otInstance *aInstance) |
| { |
| OT_UNUSED_VARIABLE(aInstance); |
| (void)PDM_Init(); |
| } |
| |
| void otPlatSettingsDeinit(otInstance *aInstance) |
| { |
| OT_UNUSED_VARIABLE(aInstance); |
| } |
| |
| otError otPlatSettingsGet(otInstance *aInstance, uint16_t aKey, int aIndex, uint8_t *aValue, uint16_t *aValueLength) |
| { |
| OT_UNUSED_VARIABLE(aInstance); |
| |
| otError error = OT_ERROR_NONE; |
| PDM_teStatus pdmStatus; |
| uint16_t bytesRead = 0; |
| uint16_t offset = 0; |
| |
| // only perform read if an input buffer was passed in |
| if (aValue != NULL && aValueLength != NULL) |
| { |
| offset = aIndex * (*aValueLength); |
| pdmStatus = PDM_eReadPartialDataFromExistingRecord(aKey + NVM_START_ID, offset + sizeof(uint16_t), aValue, |
| *aValueLength, &bytesRead); |
| |
| otEXPECT_ACTION((PDM_E_STATUS_OK == pdmStatus), error = OT_ERROR_NOT_FOUND); |
| *aValueLength = bytesRead; |
| } |
| else |
| { |
| if (false == PDM_bDoesDataExist(aKey + NVM_START_ID, &bytesRead)) |
| { |
| error = OT_ERROR_NOT_FOUND; |
| } |
| else if (aValueLength != NULL) |
| { |
| *aValueLength = bytesRead; |
| } |
| } |
| |
| exit: |
| return error; |
| } |
| |
| otError otPlatSettingsSet(otInstance *aInstance, uint16_t aKey, const uint8_t *aValue, uint16_t aValueLength) |
| { |
| return addSetting(aInstance, aKey, true, aValue, aValueLength); |
| } |
| |
| otError otPlatSettingsAdd(otInstance *aInstance, uint16_t aKey, const uint8_t *aValue, uint16_t aValueLength) |
| { |
| uint16_t length; |
| bool index0; |
| |
| index0 = (otPlatSettingsGet(aInstance, aKey, 0, NULL, &length) == OT_ERROR_NOT_FOUND ? true : false); |
| return addSetting(aInstance, aKey, index0, aValue, aValueLength); |
| } |
| |
| otError otPlatSettingsDelete(otInstance *aInstance, uint16_t aKey, int aIndex) |
| { |
| OT_UNUSED_VARIABLE(aInstance); |
| |
| otError error = OT_ERROR_NONE; |
| PDM_teStatus pdmStatus; |
| uint16_t bytesRead = 0; |
| uint16_t recordElmSize = 0; |
| |
| pdmStatus = PDM_eReadDataFromRecord(aKey + NVM_START_ID, sPdmBuffer, pdmBufferSize, &bytesRead); |
| otEXPECT_ACTION((PDM_E_STATUS_OK == pdmStatus), error = OT_ERROR_NOT_FOUND); |
| |
| recordElmSize = *((uint16_t *)sPdmBuffer); |
| |
| /* Determine if record contains multiple entries or just one */ |
| if ((-1 == aIndex) || (recordElmSize == bytesRead - sizeof(recordElmSize))) |
| { |
| PDM_vDeleteDataRecord(aKey + NVM_START_ID); |
| } |
| else if (recordElmSize < bytesRead) |
| { |
| uint8_t *pMovePtrDst = sPdmBuffer + sizeof(recordElmSize) + (recordElmSize * aIndex); |
| uint8_t *pMovePtrSrc = pMovePtrDst + recordElmSize; |
| |
| if (pMovePtrSrc < sPdmBuffer + bytesRead) |
| { |
| memcpy(pMovePtrDst, pMovePtrSrc, recordElmSize); |
| } |
| pdmStatus = PDM_eSaveRecordData(aKey + NVM_START_ID, sPdmBuffer, bytesRead - recordElmSize); |
| otEXPECT_ACTION((PDM_E_STATUS_OK == pdmStatus), error = OT_ERROR_NOT_FOUND); |
| } |
| |
| exit: |
| return error; |
| } |
| |
| void otPlatSettingsWipe(otInstance *aInstance) |
| { |
| OT_UNUSED_VARIABLE(aInstance); |
| |
| for (uint32_t i = 0; i <= NVM_MAX_ID; i++) |
| { |
| PDM_vDeleteDataRecord(NVM_START_ID + i); |
| } |
| } |