Tasmota/sonoff/xsns_10_bh1750.ino
arendst 3403ca1e0a v5.10.0
5.10.0 20171201
 * Upgrade library ArduinoJson to 5.11.2
 * Upgrade
library IRRemoteEsp8266 to 2.2.1 + 2 commits but disabled some protocols
(code size reduction)
 * Upgrade library NeoPixelBus to 2.2.9
 * Upgrade
library OneWire to 2.3.3 + 6 commits and disabled CRC lookup-table
(#define ONEWIRE_CRC8_TABLE 0) (code size reduction)
 * Update library
PubSubClient to 2.6 + 9 commits and additional delay (#790)
 * Update
core_esp8266_wiring_digital.c to latest (staged) level
 * Patch library
I2Cdevlib-Core for esp8266-core 2.4.0-rc2 compatibility
 * Remove
command EnergyReset 1..3 now replaced by ENergyReset1 to EnergyReset3
 *
Remove spaces in JSON messages (code size reduction)
 * Renamed
xsns_05_ds18x20.ino to xsns_05_ds18x20_legacy.ino still using library
OneWire and providing dynamic sensor scan
 * Fix possible iram1_0_seg
compile error by shrinking ICACHE_RAM_ATTR code usage
 * Fix PWM
watchdog timeout if Dimmer is set to 100 or Color set to 0xFF (#1146)
 *
Fix Sonoff Bridge Learn Mode hang caused by unrecognised RF code
(#1181)
 * Fix blank console log window by using XML character encoding
(#1187)
 * Fix wrong response name for command HlwISet (#1214)
 * Fix
DHT type sensor timeout recognition by distinguish "signal already
there" from "timeout" (#1233)
 * Add fixed color options 1..12 to
command Color
 * Add + (plus) and - (minus) to commands Dimmer
(+10/-10), Speed and Scheme
 * Add + (plus) and - (minus) to command
Color to select 1 out of 12 preset colors
 * Add + (plus) and - (minus)
to command Ct to control ColdWarm led ColorTemperature (+34/-34)
 * Add
commands EnergyReset1 0..42500, EnergyReset2 0..42500 and EnergyReset3
0..42500000
 *  to (Re)set Energy Today, Yesterday or Total respectively
in Wh (#406, #685, #1202)
 * Add optional ADS1115 driver as alternative
for unsupported I2Cdevlib in esp8266-core 2.4.0-rc2
 * Add support for
INA219 Voltage and Current sensor to be enabled in user_config.h with
define USE_INA219
 * Add support for Arilux LC11 (Clearing RF home code
when selecting no Arilux module)
 * Add support for WS2812 RGBW
ledstrips to be enabled in user_config.h with define USE_WS2812_CTYPE
(#1156)
 * Add SettingsSaveAll routine to command SaveData to be used
before controlled power down (#1202)
 * Add option PUSHBUTTON_TOGGLE
(SwitchMode 7) to allow toggling on any switch change (#1221)
 * Add new
xdrv_05_ds18x20.ino free from library OneWire and add the following
features:
 *  Add support for DS1822
 *  Add forced setting of 12-bit
resolution for selected device types (#1222)
 *  Add read temperature
retry counter (#1215)
 *  Fix lost sensors by performing sensor probe at
restart only thereby removing dynamic sensor probe (#1215)
 *  Fix
sensor address sorting using ascending sort on sensor type followed by
sensor address
 *  Rewrite JSON resulting in shorter message allowing
more sensors in default firmware image:
 *
"DS18B20-1":{"Id":"00000483C23A","Temperature":19.5},"DS18B20-2":{"Id":"0000048EC44C","Temperature":19.6}

* Add additional define in user_config.h to select either single sensor
(defines disabled), new multi sensor (USE_DS18X20) or legacy multi
sensor (USE_DS18X20_LEGACY)
 * Add clock support for more different
pixel counts (#1226)
 * Add support for Sonoff Dual R2 (#1249)
 * Add
FriendlyName to web page tab and add program information to web page
footer (#1275)
2017-12-01 14:42:22 +01:00

124 lines
3.4 KiB
C++

/*
xsns_10_bh1750.ino - BH1750 ambient light sensor support for Sonoff-Tasmota
Copyright (C) 2017 Theo Arends
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef USE_I2C
#ifdef USE_BH1750
/*********************************************************************************************\
* BH1750 - Ambient Light Intensity
*
* I2C Address: 0x23 or 0x5C
\*********************************************************************************************/
#define BH1750_ADDR1 0x23
#define BH1750_ADDR2 0x5C
#define BH1750_CONTINUOUS_HIGH_RES_MODE 0x10 // Start measurement at 1lx resolution. Measurement time is approx 120ms.
uint8_t bh1750_type = 0;
uint8_t bh1750_address;
uint8_t bh1750_addresses[] = { BH1750_ADDR1, BH1750_ADDR2 };
uint16_t Bh1750ReadLux()
{
Wire.requestFrom(bh1750_address, (uint8_t)2);
byte msb = Wire.read();
byte lsb = Wire.read();
uint16_t value = ((msb << 8) | lsb) / 1.2;
return value;
}
/********************************************************************************************/
void Bh1750Detect()
{
if (bh1750_type) {
return;
}
for (byte i = 0; i < sizeof(bh1750_addresses); i++) {
bh1750_address = bh1750_addresses[i];
Wire.beginTransmission(bh1750_address);
Wire.write(BH1750_CONTINUOUS_HIGH_RES_MODE);
if (!Wire.endTransmission()) {
bh1750_type = 1;
break;
}
}
if (bh1750_type) {
snprintf_P(log_data, sizeof(log_data), S_LOG_I2C_FOUND_AT, "BH1750", bh1750_address);
AddLog(LOG_LEVEL_DEBUG);
}
}
#ifdef USE_WEBSERVER
const char HTTP_SNS_ILLUMINANCE[] PROGMEM =
"%s{s}BH1750 " D_ILLUMINANCE "{m}%d " D_UNIT_LUX "{e}"; // {s} = <tr><th>, {m} = </th><td>, {e} = </td></tr>
#endif // USE_WEBSERVER
void Bh1750Show(boolean json)
{
if (bh1750_type) {
uint16_t illuminance = Bh1750ReadLux();
if (json) {
snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("%s,\"BH1750\":{\"" D_ILLUMINANCE "\":%d}"), mqtt_data, illuminance);
#ifdef USE_DOMOTICZ
DomoticzSensor(DZ_ILLUMINANCE, illuminance);
#endif // USE_DOMOTICZ
#ifdef USE_WEBSERVER
} else {
snprintf_P(mqtt_data, sizeof(mqtt_data), HTTP_SNS_ILLUMINANCE, mqtt_data, illuminance);
#endif // USE_WEBSERVER
}
}
}
/*********************************************************************************************\
* Interface
\*********************************************************************************************/
#define XSNS_10
boolean Xsns10(byte function)
{
boolean result = false;
if (i2c_flg) {
switch (function) {
// case FUNC_XSNS_INIT:
// break;
case FUNC_XSNS_PREP:
Bh1750Detect();
break;
case FUNC_XSNS_JSON_APPEND:
Bh1750Show(1);
break;
#ifdef USE_WEBSERVER
case FUNC_XSNS_WEB:
Bh1750Show(0);
break;
#endif // USE_WEBSERVER
}
}
return result;
}
#endif // USE_BH1750
#endif // USE_I2C