mirror of https://github.com/arendst/Tasmota.git
126 lines
3.3 KiB
C++
126 lines
3.3 KiB
C++
/*
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xsns_11_veml6070.ino - VEML6070 ultra violet light sensor support for Sonoff-Tasmota
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Copyright (C) 2018 Theo Arends
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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_VEML6070
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/*********************************************************************************************\
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* VEML6070 - Ultra Violet Light Intensity
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*
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* I2C Address: 0x38 and 0x39
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\*********************************************************************************************/
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#define VEML6070_ADDR_H 0x39
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#define VEML6070_ADDR_L 0x38
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#define VEML6070_INTEGRATION_TIME 3 // 500msec integration time
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uint8_t veml6070_address;
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uint8_t veml6070_type = 0;
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uint16_t Veml6070ReadUv()
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{
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if (Wire.requestFrom(VEML6070_ADDR_H, 1) != 1) {
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return -1;
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}
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uint16_t uvi = Wire.read();
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uvi <<= 8;
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if (Wire.requestFrom(VEML6070_ADDR_L, 1) != 1) {
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return -1;
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}
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uvi |= Wire.read();
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return uvi;
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}
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/********************************************************************************************/
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void Veml6070Detect()
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{
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if (veml6070_type) {
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return;
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}
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uint8_t itime = VEML6070_INTEGRATION_TIME;
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veml6070_address = VEML6070_ADDR_L;
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Wire.beginTransmission(veml6070_address);
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Wire.write((itime << 2) | 0x02);
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uint8_t status = Wire.endTransmission();
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if (!status) {
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veml6070_type = 1;
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snprintf_P(log_data, sizeof(log_data), S_LOG_I2C_FOUND_AT, "VEML6070", veml6070_address);
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AddLog(LOG_LEVEL_DEBUG);
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}
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}
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#ifdef USE_WEBSERVER
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const char HTTP_SNS_ULTRAVIOLET[] PROGMEM =
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"%s{s}VEML6070 " D_UV_LEVEL "{m}%d{e}"; // {s} = <tr><th>, {m} = </th><td>, {e} = </td></tr>
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#endif // USE_WEBSERVER
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void Veml6070Show(boolean json)
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{
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if (veml6070_type) {
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uint16_t uvlevel = Veml6070ReadUv();
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if (json) {
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snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("%s,\"VEML6070\":{\"" D_JSON_UV_LEVEL "\":%d}"), mqtt_data, uvlevel);
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#ifdef USE_DOMOTICZ
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if (0 == tele_period) DomoticzSensor(DZ_ILLUMINANCE, uvlevel);
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#endif // USE_DOMOTICZ
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#ifdef USE_WEBSERVER
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} else {
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snprintf_P(mqtt_data, sizeof(mqtt_data), HTTP_SNS_ULTRAVIOLET, mqtt_data, uvlevel);
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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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#define XSNS_11
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boolean Xsns11(byte function)
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{
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boolean result = false;
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if (i2c_flg) {
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switch (function) {
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case FUNC_PREP_BEFORE_TELEPERIOD:
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Veml6070Detect();
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break;
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case FUNC_JSON_APPEND:
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Veml6070Show(1);
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break;
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#ifdef USE_WEBSERVER
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case FUNC_WEB_APPEND:
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Veml6070Show(0);
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break;
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#endif // USE_WEBSERVER
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}
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}
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return result;
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}
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#endif // USE_VEML6070
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#endif // USE_I2C
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