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Add support for TC74
Add support for TC74 temperature sensor by Michael Loftis (#18042)
This commit is contained in:
Theo Arends
parent
616652ea22
commit
cda2bf157d
@ -112,6 +112,7 @@ Note: `minimal` variant is not listed as it shouldn't be used outside of the [up
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| USE_ADS1115 | - | - / x | - | x | - | - |
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| USE_INA219 | - | - / x | - | x | - | - |
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| USE_INA226 | - | - / - | - | - | - | - |
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| USE_INA3221 | - | - / - | - | - | - | - |
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| USE_SHT3X | - | - / x | - | x | - | - |
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| USE_TSL2561 | - | - / - | - | - | - | - |
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| USE_TSL2591 | - | - / - | - | - | - | - |
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@ -147,6 +148,7 @@ Note: `minimal` variant is not listed as it shouldn't be used outside of the [up
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| USE_PMSA003I | - | - / - | - | - | - | - |
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| USE_LOX_O2 | - | - / x | - | x | - | - |
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| USE_GDK101 | - | - / - | - | - | - | - |
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| USE_TC74 | - | - / - | - | - | - | - |
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| | | | | | | |
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| Feature or Sensor | l | t | k | s | i | d | Remarks
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| USE_HIH6 | - | - / x | - | x | - | - |
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@ -10,6 +10,7 @@ All notable changes to this project will be documented in this file.
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- Matter allow `Matter#Initialized` rule once the device is configured (#18451)
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- Matter UI to change endpoints configuration (#18498)
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- Matter support for Shutters (without Tilt) (#18509)
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- Support for TC74 temperature sensor by Michael Loftis (#18042)
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### Breaking Changed
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@ -206,6 +206,8 @@ In addition to @arendst the following code is mainly owned by:
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| xsns_104_pmsa003i | Jean-Pierre Deschamps
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| xsns_105_lox_o2 | @ACE1046
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| xsns_106_gdk101 | @Szewcson
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| xsns_107_gm861 | @arendst
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| xsns_108_tc74 | Michael Loftis
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| |
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| Libraries |
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| |
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@ -114,4 +114,5 @@ Index | Define | Driver | Device | Address(es) | Description
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76 | USE_SEN5X | xsns_103 | SEN5X | 0x69 | Gas (VOC/NOx index) and air quality (PPM <1,<2.5,<4,<10)
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77 | USE_MCP23XXX_DRV | xdrv_67 | MCP23x17 | 0x20 - 0x26 | 16-bit I/O expander as virtual button/switch/relay
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78 | USE_PMSA003I | xsns_104 | PMSA003I | 0x12 | PM2.5 Air Quality Sensor with I2C Interface
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79 | USE_GDK101 | xsns_106 | GDK101 | 0x18 - 0x1B | Gamma Radiation Sensor
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79 | USE_GDK101 | xsns_106 | GDK101 | 0x18 - 0x1B | Gamma Radiation Sensor
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80 | USE_TC74 | xsns_108 | TC74 | 0x48 - 0x4F | Temperature sensor
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@ -113,6 +113,7 @@ The latter links can be used for OTA upgrades too like ``OtaUrl https://ota.tasm
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## Changelog v12.5.0.1
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### Added
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- Command ``SetOption152 0/1`` to select two (0 = default) pin bistable or one (1) pin latching relay control [#18386](https://github.com/arendst/Tasmota/issues/18386)
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- Support for TC74 temperature sensor by Michael Loftis [#18042](https://github.com/arendst/Tasmota/issues/18042)
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- Matter sensors Humidity, Pressure, Illuminance [#18441](https://github.com/arendst/Tasmota/issues/18441)
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- Matter allow `Matter#Initialized` rule once the device is configured [#18451](https://github.com/arendst/Tasmota/issues/18451)
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- Matter UI to change endpoints configuration [#18498](https://github.com/arendst/Tasmota/issues/18498)
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@ -706,7 +706,10 @@
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// #define GDK101_SHOW_STATUS
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// #define GDK101_SHOW_VIBRATION_STATUS
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// #define GDK101_SHOW_MEAS_TIME
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// #define USE_TC74 // [I2cDriver80] Enable TC74 sensor (I2C addresses 0x48 - 0x4F) (+1k code)
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// #define TC74_MAX_SENSORS 8 // Support non-default/multiple I2C addresses
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// #define TC74_I2C_PROBE_ADDRESSES { 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F } // Addresses to probe/support
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// #define TC74_MAX_FAILCOUNT 8 // Maximum failed polls before it's marked inactive until reprobing later
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// #define USE_RTC_CHIPS // Enable RTC chip support and NTP server - Select only one
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// #define USE_DS3231 // [I2cDriver26] Enable DS3231 RTC (I2C address 0x68) (+1k2 code)
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@ -888,9 +888,12 @@ void ResponseAppendFeatures(void)
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#if defined(USE_I2C) && defined(USE_GDK101)
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feature9 |= 0x00100000; // xsns_106_gdk101.ino
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#endif
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// feature9 |= 0x00200000;
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// feature9 |= 0x00400000;
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#ifdef USE_GM861
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feature9 |= 0x00200000; // xsns_107_gm861.ino
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#endif
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#if defined(USE_I2C) && defined(USE_TC74)
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feature9 |= 0x00400000; // xsns_108_tc74.ino
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#endif
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// feature9 |= 0x00800000;
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// feature9 |= 0x01000000;
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287
tasmota/tasmota_xsns_sensor/xsns_108_tc74.ino
Normal file
287
tasmota/tasmota_xsns_sensor/xsns_108_tc74.ino
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@ -0,0 +1,287 @@
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/*
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xsns_108_tc74.ino - TC74 I2C temperature sensor support for Tasmota
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Copyright (C) 2023 Michael Loftis
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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_TC74
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/*********************************************************************************************\
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* TC74 - Temperature Sensor
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*
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* TC74 I2C Address: 0x4D
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* Datasheet: https://ww1.microchip.com/downloads/en/DeviceDoc/21462D.pdf
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*
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* Eight I2C address variant parts are available. The part numbers are TC74An where N is
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* one of the eight addresses noted in the (unused) #defines below. Be sure to check your
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* part number for the correct address before building your firmware image! Due to the
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* limited RAM in ESP8266's the default configuration does not try to work with all eight.
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*
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* For I2C 0x4D, TC74A5 part, is the standard address, other addresses are available as a
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* custom order, eight total addresses. This driver thus supports up to
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* eight sensors, sensors beyond/other than the default 0x4D require setting
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* of defines, there is also no good way to ID these sensors as there's no MSR
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* and nothing unique about their information.
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*
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* These sensors only have a nominal 1C resolution. The git devices are sold
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* calibrated to a specific supply voltage but will work from 2.7V-5.5V, but
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* will suffer 1C per Volt deviation from the rating of accuracy loss. They're
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* only accurate to about +/-2C to begin with.
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\*********************************************************************************************/
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#define XSNS_108 108
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#define XI2C_80 80
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//#define TC74_MAX_SENSORS 8 // Support non-default/multiple I2C addresses
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//#define TC74_I2C_PROBE_ADDRESSES { 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F } // Addresses to probe/support
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//#define TC74_MAX_FAILCOUNT 8 // maximum failed polls before it's marked inactive until reprobing later
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//#define TC74_EXTRA_DEBUG // Compile in some extra debug logging statements around failures and measurements
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#define TC74_ADDR0 0x48
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#define TC74_ADDR1 0x49
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#define TC74_ADDR2 0x4A
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#define TC74_ADDR3 0x4B
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#define TC74_ADDR4 0x4C
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#define TC74_ADDR5 0x4D
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#define TC74_ADDR6 0x4E
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#define TC74_ADDR7 0x4F
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#define TC74_ADDR_BASE TC74_ADDR0
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#define TC74_ADDR_DEFAULT TC74_ADDR5
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#ifndef TC74_MAX_SENSORS
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#define TC74_MAX_SENSORS 1
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uint8_t tc74_probes[TC74_MAX_SENSORS] PROGMEM = { TC74_ADDR_DEFAULT };
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#else
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uint8_t tc74_probes[TC74_MAX_SENSORS] PROGMEM = TC74_I2C_PROBE_ADDRESSES;
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#endif
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#ifndef TC74_MAX_FAILCOUNT
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#define TC74_MAX_FAILCOUNT 8
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#endif
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const uint8_t TC74_CMD_RTR = 0x00; // Read Temperature
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const uint8_t TC74_CMD_RWCR = 0x01; // Read/Write CONFIG
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/* CONFIG register
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* D7 = STANDBY (R/W)
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* D6 = READY (R/O)
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* D5-D0 = Reserved - always zero
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* POR state is all zeroes.
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*/
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const uint8_t TC74_CONFIG_DRDY = 0b00000010;
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// only used once...
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#define TC74_CONFIG_MASK 0b11111100
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struct {
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uint8_t found_count = 0;
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uint8_t tcnt = 0;
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} tc74_status;
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struct {
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// Last read temperature
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float temperature = NAN;
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// flag if we could/couldn't read in most recent poll
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bool is_active;
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// failure count, if this goes above N we set active to false and
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// the sensor will be retried later
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uint8_t failed_count;
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uint8_t address;
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} tc74_sensors[TC74_MAX_SENSORS];
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void TC74InitState() {
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#ifdef TC74_EXTRA_DEBUG
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AddLog(LOG_LEVEL_DEBUG, PSTR("TC7: InitState"));
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#endif
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for (uint32_t i = 0; i < TC74_MAX_SENSORS; i++) {
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tc74_sensors[i].is_active = false;
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tc74_sensors[i].failed_count = 0;
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tc74_sensors[i].address = pgm_read_byte(tc74_probes + i);
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}
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}
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void TC74Detect(bool forced) {
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for (uint32_t i = 0; i < TC74_MAX_SENSORS; i++) {
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uint8_t config_reg;
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uint8_t addr = tc74_sensors[i].address;
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#ifdef TC74_EXTRA_DEBUG
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AddLog(LOG_LEVEL_DEBUG, PSTR("TC7: Addr %X probing"), addr);
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#endif
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// if we failed more than N times, unless we're being forced to, skip it.
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if (!forced && tc74_sensors[i].failed_count >= TC74_MAX_FAILCOUNT ) {
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tc74_sensors[i].is_active = false;
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continue;
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}
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// I2cSetDevice ALWAYs returns false if a device is marked active already...
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// So if we have the is_active flag for this device SKIP this check
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if (!tc74_sensors[i].is_active && !I2cSetDevice(addr)) {
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if (tc74_sensors[i].failed_count < 253) { tc74_sensors[i].failed_count++; }
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#ifdef TC74_EXTRA_DEBUG
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AddLog(LOG_LEVEL_DEBUG, PSTR("TC7: Addr %X failed I2cSetDevice"), addr);
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#endif
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continue;
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}
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// Pull CONFIG and check it, best we can do to keep away from other I2C devices
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if (!I2cValidRead8(&config_reg, addr, TC74_CMD_RWCR)) {
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tc74_sensors[i].is_active = false;
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tc74_sensors[i].failed_count++;
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if(I2cActive(addr)) { I2cResetActive(addr); }
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#ifdef TC74_EXTRA_DEBUG
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AddLog(LOG_LEVEL_ERROR, PSTR("TC7: Addr %X failed CONFIG read, deactivated"), addr);
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#endif
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continue;
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}
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// if any reserved bits are set, not our device
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if (config_reg & TC74_CONFIG_MASK != 0x00 ) {
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tc74_sensors[i].is_active = false;
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tc74_sensors[i].failed_count++;
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if(I2cActive(addr)) { I2cResetActive(addr); }
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#ifdef TC74_EXTRA_DEBUG
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AddLog(LOG_LEVEL_DEBUG, PSTR("TC7: Addr %X found reserved bits set [%x]"), addr, config_reg);
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#endif
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continue;
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}
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// Make sure STANDBY is not set, POR should be clear, but, if another I2C driver toggled it....
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I2cWrite8(addr, TC74_CMD_RWCR, 0x0);
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if (!tc74_sensors[i].is_active) {
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tc74_sensors[i].is_active = true;
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#ifdef TC74_EXTRA_DEBUG
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AddLog(LOG_LEVEL_DEBUG, PSTR("TC7: Addr %X set active"), addr);
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#endif
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I2cSetActiveFound(addr, "TC74");
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}
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tc74_sensors[i].failed_count = 0;
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} // for sensors...
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}
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void TC74PollActive() {
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for (uint8_t i = 0; i < TC74_MAX_SENSORS; i++) {
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uint8_t addr = tc74_sensors[i].address;
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uint8_t config_reg;
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int8_t temperature_register;
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if (!tc74_sensors[i].is_active) { continue; }
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// if timing were a problem we could read both bytes from the RTR, then
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// do mask/shift to recover the parts we want.
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if (!I2cValidRead8(&config_reg, addr, TC74_CMD_RWCR)) {
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tc74_sensors[i].failed_count++;
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continue;
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}
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// check if a measurement is ready
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if (config_reg & TC74_CONFIG_DRDY != 0b00000010) { continue; }
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// grab most recent reading
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if (!I2cValidRead8((uint8_t*)&temperature_register, addr, TC74_CMD_RTR)) {
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tc74_sensors[i].failed_count++;
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continue;
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}
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tc74_sensors[i].temperature = ConvertTemp(temperature_register);
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tc74_sensors[i].failed_count = 0;
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#ifdef TC74_EXTRA_DEBUG
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AddLog(LOG_LEVEL_DEBUG, PSTR("TC7: Addr %X register temperature was %hhi or [%i]"), addr, temperature_register, temperature_register);
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AddLog(LOG_LEVEL_DEBUG, PSTR("TC7: Addr %X stored temperature %*_f"), addr, Settings->flag2.temperature_resolution, &tc74_sensors[i].temperature);
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#endif
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} // for sensors...
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}
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void TC74Show(bool json) {
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bool once = true;
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// loop over sensors, only output if active
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for (uint8_t i = 0; i < TC74_MAX_SENSORS; i++) {
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if (tc74_sensors[i].is_active) {
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char sname[10];
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snprintf_P(sname, sizeof(sname), PSTR("TC74%c%02X"), IndexSeparator(), tc74_sensors[i].address);
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if (json) {
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ResponseAppend_P(JSON_SNS_F_TEMP, sname, Settings->flag2.temperature_resolution, &tc74_sensors[i].temperature);
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// also send KNX and Domoticz if enabled...and first sensor reporting
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// might beed guarded by some sort of enable (compile time or otherwise)
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if ((0 == TasmotaGlobal.tele_period) && once) {
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#ifdef USE_DOMOTICZ
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DomoticzFloatSensor(DZ_TEMP, tc74_sensors[i].temperature);
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#endif // USE_DOMOTICZ
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#ifdef USE_KNX
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KnxSensor(KNX_TEMPERATURE, tc74_sensors[i].temperature);
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#endif // USE_KNX
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once = false;
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} // tele_period, first reporter
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#ifdef USE_WEBSERVER
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} else {
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WSContentSend_Temp(sname, tc74_sensors[i].temperature);
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#endif // USE_WEBSERVER
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} // if(json)
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} // if(is_active)
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} // for sensors...
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}
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/*********************************************************************************************\
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* Interface
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\*********************************************************************************************/
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bool Xsns108(uint32_t function) {
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if (!I2cEnabled(XI2C_80)) { return false; }
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bool result = false;
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// Unlike some other drivers we DO support sensors disappearing and reappearing later
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// or simply not available during initial startup
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switch (function) {
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case FUNC_INIT:
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TC74InitState();
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TC74Detect(false);
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break;
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case FUNC_HOTPLUG_SCAN:
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TC74Detect(true);
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tc74_status.tcnt = 1;
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break;
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case FUNC_EVERY_SECOND:
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/* if(tc74_status.tcnt == 0 || tc74_status.tcnt == 60) {
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TC74Detect(true);
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} */
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tc74_status.tcnt++;
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if(tc74_status.tcnt > 60) {
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tc74_status.tcnt = 1;
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}
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TC74PollActive();
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break;
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case FUNC_JSON_APPEND:
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TC74Show(true);
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break;
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#ifdef USE_WEBSERVER
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case FUNC_WEB_SENSOR:
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TC74Show(false);
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break;
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#endif
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} // switch(function)
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return result;
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}
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#endif // USE_TC74
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#endif // USE_I2C
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@ -295,7 +295,7 @@ a_features = [[
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"USE_DINGTIAN_RELAY","USE_HMC5883L","USE_LD2410","USE_ME007",
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"USE_DISPLAY_TM1650","USE_PCA9632","USE_TUYAMCUBR","USE_SEN5X",
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"USE_BIOPDU","USE_MCP23XXX_DRV","USE_PMSA003I","USE_LOX_O2",
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"USE_GDK101","","","",
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"USE_GDK101","USE_GM861","USE_TC74","",
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"","","","",
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"","","",""
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]]
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