mirror of https://github.com/arendst/Tasmota.git
289 lines
8.7 KiB
C++
289 lines
8.7 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) 2021 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(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 hydrateSingleDeviceData(const SBuffer & buf) {
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uint8_t segment_len = buf.len();
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if (segment_len < 4) {
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AddLog(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(0);
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if (shortaddr >= 0xFFF0) {
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AddLog(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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AddLog_P(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "ZbData 0x%04X,%*_H"), shortaddr, buf.buf(2), buf.len() - 2);
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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, 2, segment_len - 2);
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if (!ret) { return -1; }
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}
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return segment_len;
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}
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SBuffer hibernateDeviceData(const struct Z_Device & device) {
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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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// skip first 3 bytes
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size_t buf_len = buf.len() - 3;
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Response_P(PSTR("{\"" D_PRFX_ZB D_CMND_ZIGBEE_DATA "\":\"ZbData 0x%04X,%*_H\"}"), device.shortaddr, buf_len, buf.buf(3));
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MqttPublishPrefixTopicRulesProcess_P(RESULT_OR_STAT, PSTR(D_PRFX_ZB D_CMND_ZIGBEE_DATA));
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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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* 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 hydrateDevicesData(void) {
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Univ_Read_File f; // universal reader
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const char * storage_class = PSTR("");
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#ifdef USE_ZIGBEE_EEPROM
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if (zigbee.eeprom_ready) {
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f.init(ZIGB_DATA2);
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storage_class = PSTR("EEPROM");
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}
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#endif // USE_ZIGBEE_EEPROM
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#ifdef USE_UFILESYS
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File file;
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if (!f.valid() && dfsp) {
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file = dfsp->open(TASM_FILE_ZIGBEE_DATA, "r");
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if (file) {
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f.init(&file);
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storage_class = PSTR("File System");
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}
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}
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#endif // USE_UFILESYS
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if (!f.valid() || f.len <= 0) {
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AddLog(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "No Zigbee device data"));
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return false;
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}
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uint32_t file_len = f.len;
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if (file_len > 0) {
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AddLog(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "Zigbee device data in %s (%d bytes)"), storage_class, file_len);
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} else {
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AddLog(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "No Zigbee device data in %s"), storage_class);
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f.close();
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return false;
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}
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while (1) {
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uint8_t dev_record_len = 0;
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int32_t ret = f.readBytes(&dev_record_len, sizeof(dev_record_len));
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if (ret <= 0) {
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break; // finished
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}
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SBuffer buf(dev_record_len);
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buf.setLen(dev_record_len);
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ret = f.readBytes(buf.getBuffer(), dev_record_len);
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if (ret != dev_record_len) {
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AddLog(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "Invalid device data information, aborting"));
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f.close();
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return false;
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}
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int32_t segment_len = hydrateSingleDeviceData(buf);
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if (segment_len <= 0) {
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AddLog(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "Invalid device data information, aborting"));
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f.close();
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return false;
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}
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}
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f.close();
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return true;
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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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if (Rtc.utc_time < START_VALID_TIME) { return; }
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if (zigbee_devices.devicesSize() == 0) { return; } // safe-guard, if data is empty, don't save anything
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Univ_Write_File f;
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const char * storage_class = PSTR("");
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#ifdef USE_ZIGBEE_EEPROM
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if (!f.valid() && zigbee.eeprom_ready) {
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f.init(ZIGB_DATA2);
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storage_class = PSTR("EEPROM");
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}
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#endif
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#ifdef USE_UFILESYS
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File file;
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if (!f.valid() && dfsp) {
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file = dfsp->open(TASM_FILE_ZIGBEE_DATA, "w");
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if (file) {
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f.init(&file);
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storage_class = PSTR("File System");
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}
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}
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#endif
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if (f.valid()) {
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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);
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if (buf.len() > 0) {
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f.writeBytes(buf.getBuffer(), buf.len());
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}
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}
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size_t buf_len = f.getCursor();
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f.close();
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AddLog(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "ZbData - %d bytes written to %s"), buf_len, storage_class);
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}
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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(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(0); // set a new timer
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}
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#ifdef USE_ZIGBEE_EEPROM
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void ZFS_Erase(void) {
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if (zigbee.eeprom_present) {
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ZFS::erase();
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AddLog(LOG_LEVEL_INFO, PSTR(D_LOG_ZIGBEE "Zigbee Devices Data erased in %s"), PSTR("EEPROM"));
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}
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}
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#endif // USE_ZIGBEE_EEPROM
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#endif // USE_ZIGBEE
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