Tasmota/sonoff/xsns_02_analog.ino

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/*
xsns_02_analog.ino - ESP8266 ADC support for Sonoff-Tasmota
Copyright (C) 2019 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/>.
*/
#ifndef USE_ADC_VCC
/*********************************************************************************************\
* ADC support
\*********************************************************************************************/
#define XSNS_02 2
uint16_t adc_last_value = 0;
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uint16_t AdcRead(void)
{
uint16_t analog = 0;
for (uint8_t i = 0; i < 32; i++) {
analog += analogRead(A0);
delay(1);
}
analog >>= 5;
return analog;
}
#ifdef USE_RULES
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void AdcEvery250ms(void)
{
uint16_t new_value = AdcRead();
if ((new_value < adc_last_value -10) || (new_value > adc_last_value +10)) {
adc_last_value = new_value;
uint16_t value = adc_last_value / 10;
Response_P(PSTR("{\"ANALOG\":{\"A0div10\":%d}}"), (value > 99) ? 100 : value);
XdrvRulesProcess();
}
}
#endif // USE_RULES
void AdcShow(bool json)
{
uint16_t analog = AdcRead();
if (json) {
ResponseAppend_P(PSTR(",\"ANALOG\":{\"A0\":%d}"), analog);
#ifdef USE_WEBSERVER
} else {
WSContentSend_PD(HTTP_SNS_ANALOG, "", 0, analog);
#endif // USE_WEBSERVER
}
}
/*********************************************************************************************\
* Interface
\*********************************************************************************************/
bool Xsns02(uint8_t function)
{
bool result = false;
if (my_module_flag.adc0) {
switch (function) {
#ifdef USE_RULES
case FUNC_EVERY_250_MSECOND:
AdcEvery250ms();
break;
#endif // USE_RULES
case FUNC_JSON_APPEND:
AdcShow(1);
break;
#ifdef USE_WEBSERVER
case FUNC_WEB_SENSOR:
AdcShow(0);
break;
#endif // USE_WEBSERVER
}
}
return result;
}
#endif // USE_ADC_VCC