mirror of https://github.com/arendst/Tasmota.git
320 lines
11 KiB
C++
320 lines
11 KiB
C++
/*
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xdrv_23_zigbee_4a_eeprom.ino - zigbee support for Tasmota - saving configuration in I2C Eeprom of ZBBridge
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Copyright (C) 2020 Theo Arends and Stephan Hadinger
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef USE_ZIGBEE
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// =======================
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// ZbData v1
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// File structure:
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//
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// [Array of devices]
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// uint8 - length of device record (excluding the length byte)
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// uint16 - short address
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//
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// [Device specific data first]
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// uint8 - length of structure (excluding the length byte)
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// uint8[] - device wide data
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//
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// [Array of data structures]
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// uint8 - length of structure
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// uint8[] - list of data
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//
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// returns the lenght of consumed buffer, or -1 if error
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int32_t hydrateDeviceWideData(class Z_Device & device, const SBuffer & buf, size_t start, size_t len) {
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size_t segment_len = buf.get8(start);
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if ((segment_len < 6) || (segment_len > len)) {
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AddLog_P(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "invalid device wide data length=%d"), segment_len);
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return -1;
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}
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device.last_seen = buf.get32(start+1);
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device.lqi = buf.get8(start + 5);
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device.batterypercent = buf.get8(start + 6);
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return segment_len + 1;
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}
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// return true if success
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bool hydrateDeviceData(class Z_Device & device, const SBuffer & buf, size_t start, size_t len) {
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// First hydrate device wide data
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int32_t ret = hydrateDeviceWideData(device, buf, start, len);
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if (ret < 0) { return false; }
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size_t offset = ret;
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while (offset + 5 <= len) { // each entry is at least 5 bytes
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uint8_t data_len = buf.get8(start + offset);
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// #ifdef Z_EEPROM_DEBUG
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// {
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// char hex_char[((data_len+1) * 2) + 2];
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// AddLog_P(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "hydrateDeviceData data_len=%d contains %s"), data_len, ToHex_P(buf.buf(start+offset+1), data_len, hex_char, sizeof(hex_char)));
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// }
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// #endif
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Z_Data & data_elt = device.data.createFromBuffer(buf, start + offset + 1, data_len);
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(void)data_elt; // avoid compiler warning
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offset += data_len + 1;
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}
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return true;
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}
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// negative means error
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// positive is the segment length
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int32_t hydrateSingleDevice(const class SBuffer & buf, size_t start, size_t len) {
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uint8_t segment_len = buf.get8(start);
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if ((segment_len < 4) || (start + segment_len > len)) {
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AddLog_P(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "invalid segment_len=%d"), segment_len);
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return -1;
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}
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// read shortaddr
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uint16_t shortaddr = buf.get16(start + 1);
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if (shortaddr >= 0xFFF0) {
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AddLog_P(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "invalid shortaddr=0x%04X"), shortaddr);
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return -1;
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}
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#ifdef Z_EEPROM_DEBUG
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{
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if (segment_len > 3) {
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char hex_char[((segment_len+1) * 2) + 2];
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AddLog_P(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "ZbData 0x%04X,%s"), shortaddr, ToHex_P(buf.buf(start+3), segment_len+1-3, hex_char, sizeof(hex_char)));
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}
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}
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#endif
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// check if the device exists, if not skip the record
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Z_Device & device = zigbee_devices.findShortAddr(shortaddr);
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if (&device != nullptr) {
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// parse the rest
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bool ret = hydrateDeviceData(device, buf, start + 3, segment_len - 3);
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if (!ret) { return -1; }
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}
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return segment_len + 1;
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}
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/*********************************************************************************************\
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*
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* Hydrate data from the EEPROM
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*
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\*********************************************************************************************/
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// Parse the entire blob
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// return true if ok
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bool hydrateDevicesDataFromEEPROM(void) {
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#ifdef USE_ZIGBEE_EZSP
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if (!zigbee.eeprom_ready) { return false; }
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int32_t file_length = ZFS::getLength(ZIGB_DATA2);
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if (file_length > 0) {
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AddLog_P(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "Zigbee device data in EEPROM (%d bytes)"), file_length);
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} else {
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AddLog_P(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "No Zigbee device data in EEPROM"));
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return false;
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}
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const uint16_t READ_BUFFER = 192;
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uint16_t cursor = 0x0000; // cursor in the file
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bool read_more = true;
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SBuffer buf(READ_BUFFER);
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while (read_more) {
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buf.setLen(buf.size()); // set to max size and fill with zeros
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int32_t bytes_read = ZFS::readBytes(ZIGB_DATA2, buf.getBuffer(), buf.size(), cursor, READ_BUFFER);
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// #ifdef Z_EEPROM_DEBUG
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// AddLog_P(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "readBytes buffer_len=%d, read_start=%d, read_len=%d, actual_read=%d"), buf.size(), cursor, length, bytes_read);
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// #endif
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if (bytes_read > 0) {
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buf.setLen(bytes_read); // adjust to actual size
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int32_t segment_len = hydrateSingleDevice(buf, 0, buf.len());
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// #ifdef Z_EEPROM_DEBUG
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// AddLog_P(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "hydrateSingleDevice segment_len=%d"), segment_len);
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// #endif
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if (segment_len <= 0) { return false; }
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cursor += segment_len;
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} else {
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read_more = false;
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}
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}
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return true;
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#else // USE_ZIGBEE_EZSP
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return false;
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#endif // USE_ZIGBEE_EZSP
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}
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class SBuffer hibernateDeviceData(const struct Z_Device & device, bool mqtt = false) {
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SBuffer buf(192);
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// If we have zero information about the device, just skip ir
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if (device.validLqi() ||
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device.validBatteryPercent() ||
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device.validLastSeen() ||
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!device.data.isEmpty()) {
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buf.add8(0x00); // overall length, will be updated later
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buf.add16(device.shortaddr);
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// device wide data
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buf.add8(6); // 6 bytes
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buf.add32(device.last_seen);
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buf.add8(device.lqi);
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buf.add8(device.batterypercent);
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for (const auto & data_elt : device.data) {
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size_t item_len = data_elt.DataTypeToLength(data_elt.getType());
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buf.add8(item_len); // place-holder for length
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buf.addBuffer((uint8_t*) &data_elt, item_len);
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}
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// update overall length
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buf.set8(0, buf.len() - 1);
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{
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size_t buf_len = buf.len() - 3;
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char hex[2*buf_len + 1];
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// skip first 3 bytes
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ToHex_P(buf.buf(3), buf_len, hex, sizeof(hex));
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if (mqtt) {
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Response_P(PSTR("{\"" D_PRFX_ZB D_CMND_ZIGBEE_DATA "\":\"ZbData 0x%04X,%s\"}"), device.shortaddr, hex);
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MqttPublishPrefixTopicRulesProcess_P(RESULT_OR_STAT, PSTR(D_PRFX_ZB D_CMND_ZIGBEE_DATA));
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} else {
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AddLog_P(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "ZbData 0x%04X,%s"), device.shortaddr, hex);
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}
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}
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}
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return buf;
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}
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/*********************************************************************************************\
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*
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* Hibernate data to the EEPROM
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*
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\*********************************************************************************************/
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void hibernateAllData(void) {
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#ifdef USE_ZIGBEE_EZSP
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if (Rtc.utc_time < START_VALID_TIME) { return; }
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if (!zigbee.eeprom_ready) { return; }
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ZFS_Write_File write_data(ZIGB_DATA2);
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// first prefix is number of devices
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uint8_t device_num = zigbee_devices.devicesSize();
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for (const auto & device : zigbee_devices.getDevices()) {
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// allocte a buffer for a single device
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SBuffer buf = hibernateDeviceData(device, false); // simple log, no mqtt
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if (buf.len() > 0) {
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write_data.addBytes(buf.getBuffer(), buf.len());
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}
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}
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int32_t ret = write_data.close();
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#ifdef Z_EEPROM_DEBUG
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AddLog_P(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "ZbData - %d bytes written to EEPROM"), ret);
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#endif
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#endif // USE_ZIGBEE_EZSP
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}
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/*********************************************************************************************\
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* Timer to save every 60 minutes
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\*********************************************************************************************/
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const uint32_t Z_SAVE_DATA_TIMER = 60 * 60 * 1000; // save data every 60 minutes (in ms)
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//
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// Callback for setting the timer to save Zigbee Data in x seconds
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//
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int32_t Z_Set_Save_Data_Timer_EEPROM(uint8_t value) {
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zigbee_devices.setTimer(0x0000, 0, Z_SAVE_DATA_TIMER, 0, 0, Z_CAT_ALWAYS, 0 /* value */, &Z_SaveDataTimer);
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return 0; // continue
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}
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void Z_SaveDataTimer(uint16_t shortaddr, uint16_t groupaddr, uint16_t cluster, uint8_t endpoint, uint32_t value) {
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hibernateAllData();
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Z_Set_Save_Data_Timer_EEPROM(0); // set a new timer
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}
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#ifdef USE_ZIGBEE_EZSP
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/*********************************************************************************************\
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* Write Devices in EEPROM
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\*********************************************************************************************/
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// EEPROM variant that writes one item at a time and is not limited to 2KB
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bool hibernateDevicesInEEPROM(void) {
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if (Rtc.utc_time < START_VALID_TIME) { return false; }
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if (!zigbee.eeprom_ready) { return false; }
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ZFS_Write_File write_data(ZIGB_NAME2);
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// first prefix is number of devices
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uint8_t devices_size = zigbee_devices.devicesSize();
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if (devices_size > 64) { devices_size = 64; } // arbitrarily limit to 64 devices in EEPROM instead of 32 in Flash
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write_data.addBytes(&devices_size, sizeof(devices_size));
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for (const auto & device : zigbee_devices.getDevices()) {
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const SBuffer buf = hibernateDevicev2(device);
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if (buf.len() > 0) {
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write_data.addBytes(buf.getBuffer(), buf.len());
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}
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}
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int32_t ret = write_data.close();
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if (ret < 0) {
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AddLog_P(LOG_LEVEL_ERROR, PSTR(D_LOG_ZIGBEE "Error writing Devices to EEPROM"));
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return false;
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} else {
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AddLog_P(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "Zigbee Devices Data saved in %s (%d bytes)"), PSTR("EEPROM"), ret);
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}
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return true;
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}
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// dump = true, only dump to logs, don't actually load
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bool loadZigbeeDevicesFromEEPROM(void) {
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if (!zigbee.eeprom_ready) { return false; }
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uint16_t file_len = ZFS::getLength(ZIGB_NAME2);
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uint8_t num_devices = 0;
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ZFS::readBytes(ZIGB_NAME2, &num_devices, sizeof(num_devices), 0, sizeof(num_devices));
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if ((file_len < 10) || (num_devices == 0x00) || (num_devices == 0xFF)) { // No data
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AddLog_P(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "No Zigbee device information in %s"), PSTR("EEPROM"));
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return false;
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}
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AddLog_P(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "Zigbee device information in %s (%d bytes)"), PSTR("EEPROM"), file_len);
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uint32_t k = 1; // byte index in global buffer
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for (uint32_t i = 0; (i < num_devices) && (k < file_len); i++) {
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uint8_t dev_record_len = 0;
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int32_t ret = ZFS::readBytes(ZIGB_NAME2, &dev_record_len, 1, k, 1);
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SBuffer buf(dev_record_len);
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buf.setLen(dev_record_len);
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ret = ZFS::readBytes(ZIGB_NAME2, buf.getBuffer(), dev_record_len, k, dev_record_len);
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if (ret != dev_record_len) {
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AddLog_P(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "File too short when reading EEPROM"));
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return false;
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}
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hydrateSingleDevice(buf, 2);
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// next iteration
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k += dev_record_len;
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}
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zigbee_devices.clean(); // don't write back to Flash what we just loaded
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return true;
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}
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#endif // USE_ZIGBEE_EZSP
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#endif // USE_ZIGBEE
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