mirror of https://github.com/arendst/Tasmota.git
240 lines
6.9 KiB
C++
240 lines
6.9 KiB
C++
/*
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xsns_59_ds1624.ino - Support for I2C DS1624 Temperature Sensor
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Copyright (C) 2021 Leonid Myravjev <asm@asm.pp.ru>
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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_I2C
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#ifdef USE_DS1624
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/*********************************************************************************************\
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* DS1624, DS1621 - Temperature
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*
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* I2C Address: 0x48 - 0x4F
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\*********************************************************************************************/
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#define XSNS_59 59
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#define XI2C_42 42 // See I2CDEVICES.md
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#define DS1624_MEM_REGISTER 0x17 //only for ds1624, don't exists on 1621
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#define DS1624_CONF_REGISTER 0xAC
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#define DS1624_TEMP_REGISTER 0xAA
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#define DS1624_START_REGISTER 0xEE
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#define DS1624_STOP_REGISTER 0x22
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#define DS1621_COUNTER_REGISTER 0xA8 //exists on 1621 and 1624(undocumented)
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#define DS1621_SLOPE_REGISTER 0xA9 //exists on 1624 and 1624(undocumented)
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#define DS1621_CFG_1SHOT (1<<0)
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#define DS1621_CFG_DONE (1<<7)
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enum {
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DS1624_TYPE_DS1624,
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DS1624_TYPE_DS1621
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};
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#define DS1624_MAX_SENSORS 8
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bool ds1624_init = false;
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struct {
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float value;
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uint8_t type;
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int errcnt;
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int misscnt;
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bool valid;
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char name[9];
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} ds1624_sns[DS1624_MAX_SENSORS];
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uint32_t DS1624_Idx2Addr(uint32_t idx) {
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return 0x48 + idx;
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}
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void DS1624_Restart(uint8_t config, uint32_t idx) {
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uint32_t addr = DS1624_Idx2Addr(idx);
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if ((config & 1) == 1) {
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config &= ~(DS1621_CFG_DONE|DS1621_CFG_1SHOT);
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I2cWrite8(addr, DS1624_CONF_REGISTER, config); // 1shot off
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delay(10); // by spec after writing
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AddLog(LOG_LEVEL_ERROR, "%s addr %x is reset, reconfig: %x", ds1624_sns[idx].name, addr, config);
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}
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I2cValidRead(addr, DS1624_START_REGISTER, 1);
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}
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void DS1624_HotPlugUp(uint32_t idx)
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{
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uint32_t addr = DS1624_Idx2Addr(idx);
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if (!I2cSetDevice(addr)) { return; }
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uint8_t config;
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if (I2cValidRead8(&config, addr, DS1624_CONF_REGISTER)) {
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uint8_t tmp;
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ds1624_sns[idx].type = (I2cValidRead8(&tmp, addr, DS1624_MEM_REGISTER)) ? DS1624_TYPE_DS1624 : DS1624_TYPE_DS1621;
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snprintf_P(ds1624_sns[idx].name, sizeof(ds1624_sns[idx].name), PSTR("DS162%c%c%d"),
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(ds1624_sns[idx].type == DS1624_TYPE_DS1621) ? '1' : '4', IndexSeparator(), idx);
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I2cSetActiveFound(addr, ds1624_sns[idx].name);
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ds1624_sns[idx].valid = true;
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ds1624_sns[idx].errcnt = 0;
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ds1624_sns[idx].misscnt = 0;
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DS1624_Restart(config,idx);
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AddLog(LOG_LEVEL_INFO, "Hot Plug %s addr %x config: %x", ds1624_sns[idx].name, addr, config);
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}
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}
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void DS1624_HotPlugDown(int idx)
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{
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uint32_t addr = DS1624_Idx2Addr(idx);
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if (!I2cActive(addr)) { return; }
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I2cResetActive(addr);
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ds1624_sns[idx].valid = false;
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AddLog(LOG_LEVEL_INFO, "Hot UnPlug %s", ds1624_sns[idx].name);
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}
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bool DS1624GetTemp(float *value, int idx)
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{
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uint32_t addr = DS1624_Idx2Addr(idx);
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uint8_t config;
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if (!I2cValidRead8(&config, addr, DS1624_CONF_REGISTER)) {
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ds1624_sns[idx].misscnt++;
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AddLog(LOG_LEVEL_INFO, "%s device missing (errors: %i)", ds1624_sns[idx].name, ds1624_sns[idx].misscnt);
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return false;
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}
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ds1624_sns[idx].misscnt=0;
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if (config & (DS1621_CFG_1SHOT|DS1621_CFG_DONE)) {
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ds1624_sns[idx].errcnt++;
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AddLog(LOG_LEVEL_INFO, "%s config error, restart... (errors: %i)", ds1624_sns[idx].name, ds1624_sns[idx].errcnt);
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DS1624_Restart(config, idx);
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return false;
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}
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uint16_t t;
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if (!I2cValidRead16(&t, DS1624_Idx2Addr(idx), DS1624_TEMP_REGISTER)) { return false; }
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if (ds1624_sns[idx].type == DS1624_TYPE_DS1624) {
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*value = ((float)(int8_t)(t>>8)) + ((t>>4)&0xf)*0.0625f;
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} else { //type == DS1624_TYPE_DS1621
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// Datasheet for ds1621 is wrong for high resolution, real is:
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*value = ((float)(int8_t)(t>>8));
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uint8_t remain;
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if (!I2cValidRead8(&remain, addr, DS1621_COUNTER_REGISTER)) { return true; }
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uint8_t perc;
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if (!I2cValidRead8(&perc, addr, DS1621_SLOPE_REGISTER)) { return true; }
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float fix=(float)(perc - remain)/(float)perc;
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*value+=fix;
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}
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ds1624_sns[idx].errcnt=0;
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config &= ~(DS1621_CFG_DONE);
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I2cWrite8(addr, DS1624_CONF_REGISTER, config);
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return true;
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}
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void DS1624HotPlugScan(void)
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{
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uint16_t t;
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for (uint32_t idx = 0; idx < DS1624_MAX_SENSORS; idx++) {
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uint32_t addr = DS1624_Idx2Addr(idx);
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if (I2cActive(addr) && !ds1624_sns[idx].valid) {
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continue; // is busy by another driver
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}
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if (ds1624_sns[idx].valid) {
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if ((ds1624_sns[idx].misscnt>2)||(ds1624_sns[idx].errcnt>2)) {
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DS1624_HotPlugDown(idx);
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continue;
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}
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}
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DS1624_HotPlugUp(idx);
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}
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}
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void DS1624EverySecond(void)
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{
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float t;
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for (uint32_t i = 0; i < DS1624_MAX_SENSORS; i++) {
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if (!ds1624_sns[i].valid) { continue; }
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if (!DS1624GetTemp(&t, i)) { continue; }
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ds1624_sns[i].value = ConvertTemp(t);
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}
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}
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void DS1624Show(bool json)
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{
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bool once = true;
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for (uint32_t i = 0; i < DS1624_MAX_SENSORS; i++) {
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if (!ds1624_sns[i].valid) { continue; }
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if (json) {
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ResponseAppend_P(JSON_SNS_F_TEMP, ds1624_sns[i].name, Settings->flag2.temperature_resolution, &ds1624_sns[i].value);
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if ((0 == TasmotaGlobal.tele_period) && once) {
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#ifdef USE_DOMOTICZ
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DomoticzFloatSensor(DZ_TEMP, ds1624_sns[i].value);
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#endif // USE_DOMOTICZ
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#ifdef USE_KNX
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KnxSensor(KNX_TEMPERATURE, ds1624_sns[i].value);
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#endif // USE_KNX
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once = false;
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}
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#ifdef USE_WEBSERVER
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} else {
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WSContentSend_Temp(ds1624_sns[i].name, ds1624_sns[i].value);
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#endif // USE_WEBSERVER
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}
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}
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}
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/*********************************************************************************************\
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* Interface
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\*********************************************************************************************/
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bool Xsns59(uint32_t function)
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{
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if (!I2cEnabled(XI2C_42)) { return false; }
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bool result = false;
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if (FUNC_INIT == function) {
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if (!ds1624_init) {
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memset(ds1624_sns, 0, sizeof(ds1624_sns));
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ds1624_init = true;
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DS1624HotPlugScan(); // If HotPlug is off
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}
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}
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switch (function) {
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case FUNC_HOTPLUG_SCAN:
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DS1624HotPlugScan();
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break;
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case FUNC_EVERY_SECOND:
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DS1624EverySecond();
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break;
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case FUNC_JSON_APPEND:
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DS1624Show(1);
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break;
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#ifdef USE_WEBSERVER
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case FUNC_WEB_SENSOR:
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DS1624Show(0);
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break;
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#endif // USE_WEBSERVER
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}
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return result;
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}
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#endif // USE_DS1624
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#endif // USE_I2C
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