5b51d50ade
1. effective "Differential Upgrade" patch algorithm with high compression rate 2. effective recovery algorithm support recovery firmware in blocks which has low memory consumption and wear-leveling strategies, especially suitable for embeded devices with low RAM. 3. add sample ota bootloader project, see: board\TencentOS_tiny_EVB_MX_Plus\KEIL\ota\ota_bootloader_recovery 4. add sample application project for download firmware through http, see: board\TencentOS_tiny_EVB_MX_Plus\KEIL\ota\ota_application_download_through_http 5. add sample application project for download firmware through qcloud explorer console, see: board\TencentOS_tiny_EVB_MX_Plus\KEIL\ota\ota_application_download_through_qcloud_iot_explorer 6. an OTA markdown document is pending
127 lines
2.9 KiB
C
127 lines
2.9 KiB
C
/*----------------------------------------------------------------------------
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* Tencent is pleased to support the open source community by making TencentOS
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* available.
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*
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* Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
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* If you have downloaded a copy of the TencentOS binary from Tencent, please
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* note that the TencentOS binary is licensed under the BSD 3-Clause License.
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*
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* If you have downloaded a copy of the TencentOS source code from Tencent,
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* please note that TencentOS source code is licensed under the BSD 3-Clause
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* License, except for the third-party components listed below which are
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* subject to different license terms. Your integration of TencentOS into your
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* own projects may require compliance with the BSD 3-Clause License, as well
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* as the other licenses applicable to the third-party components included
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* within TencentOS.
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*---------------------------------------------------------------------------*/
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#include "stdlib.h"
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#include "wstream.h"
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int wstream_create(wstream_t *wstream, uint8_t *buf, int buf_size)
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{
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if (!wstream || !buf) {
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return -1;
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}
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wstream->buf = buf;
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wstream->buf_size = buf_size;
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wstream->cursor = 0;
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return 0;
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}
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int wstream_destroy(wstream_t *wstream)
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{
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WSTREAM_SANITY_CHECK(wstream);
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wstream->buf = (uint8_t *)0;
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wstream->buf_size = 0;
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wstream->cursor = 0;
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return 0;
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}
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int wstream_reset(wstream_t *wstream)
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{
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WSTREAM_SANITY_CHECK(wstream);
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wstream->cursor = 0;
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return 0;
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}
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int wstream_write_byte(wstream_t *wstream, uint8_t byte)
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{
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WSTREAM_SANITY_CHECK(wstream);
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if (wstream->buf_size == wstream->cursor) {
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return -1;
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}
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wstream->buf[wstream->cursor++] = byte;
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return 0;
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}
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int wstream_write_byte_at(wstream_t *wstream, int offset, uint8_t byte)
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{
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WSTREAM_SANITY_CHECK(wstream);
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if (offset >= wstream->buf_size) {
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return -1;
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}
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wstream->buf[offset] = byte;
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return 0;
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}
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int wstream_write_stream(wstream_t *wstream, uint8_t *stream, int stream_size)
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{
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int i = 0;
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WSTREAM_SANITY_CHECK(wstream);
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if (wstream->buf_size - wstream->cursor < stream_size) {
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return -1;
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}
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for (i = 0; i < stream_size; ++i) {
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wstream_write_byte(wstream, stream[i]);
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}
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return 0;
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}
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int wstream_write_stream_at(wstream_t *wstream, int offset, uint8_t *stream, int stream_size)
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{
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int i = 0;
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WSTREAM_SANITY_CHECK(wstream);
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if (wstream->buf_size - offset < stream_size) {
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return -1;
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}
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for (i = 0; i < stream_size; ++i) {
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wstream_write_byte_at(wstream, offset++, stream[i]);
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}
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return 0;
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}
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int wstream_length_get(wstream_t *wstream)
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{
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WSTREAM_SANITY_CHECK(wstream);
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return wstream->cursor;
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}
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uint8_t *wstream_buf_get(wstream_t *wstream)
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{
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WSTREAM_SANITY_CHECK_RC(wstream, NULL);
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return wstream->buf;
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}
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