mirror of https://github.com/arendst/Tasmota.git
95 lines
2.5 KiB
C++
95 lines
2.5 KiB
C++
/*
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xsns_02_analog.ino - ESP8266 ADC 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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#ifndef USE_ADC_VCC
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/*********************************************************************************************\
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* ADC support
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\*********************************************************************************************/
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#define XSNS_02 2
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uint16_t adc_last_value = 0;
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uint16_t AdcRead()
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{
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uint16_t analog = 0;
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for (byte i = 0; i < 32; i++) {
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analog += analogRead(A0);
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delay(1);
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}
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analog >>= 5;
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return analog;
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}
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#ifdef USE_RULES
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void AdcEvery250ms()
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{
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uint16_t new_value = AdcRead();
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if ((new_value < adc_last_value -10) || (new_value > adc_last_value +10)) {
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adc_last_value = new_value;
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uint16_t value = adc_last_value / 10;
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snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("{\"ANALOG\":{\"A0div10\":%d}}"), (value > 99) ? 100 : value);
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XdrvRulesProcess();
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}
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}
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#endif // USE_RULES
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void AdcShow(boolean json)
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{
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uint16_t analog = AdcRead();
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if (json) {
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snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("%s,\"ANALOG\":{\"A0\":%d}"), mqtt_data, analog);
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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_ANALOG, mqtt_data, "", 0, analog);
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#endif // USE_WEBSERVER
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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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boolean Xsns02(byte function)
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{
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boolean result = false;
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if (pin[GPIO_ADC0] < 99) {
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switch (function) {
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#ifdef USE_RULES
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case FUNC_EVERY_250_MSECOND:
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AdcEvery250ms();
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break;
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#endif // USE_RULES
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case FUNC_JSON_APPEND:
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AdcShow(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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AdcShow(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_ADC_VCC
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