mirror of https://github.com/arendst/Tasmota.git
Update xdrv_26_lm75ad.ino to support C or F
Update xdrv_26_lm75ad.ino to support C or F depending on Settings.flag.temperature_conversion (#define TEMP_CONVERSION 0 or 1) as stored in [SetOption8] Return temperature in (0 = Celsius or 1 = Fahrenheit)
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andrethomas
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289b662f10
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@ -1,127 +1,130 @@
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/*
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xdrv_26_lm75ad.ino - Support for I2C LM75AD Temperature Sensor
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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_LM75AD
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/*********************************************************************************************\
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* LM75AD
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\*********************************************************************************************/
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#define LM75AD_ADDRESS1 0x48
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#define LM75AD_ADDRESS2 0x49
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#define LM75AD_ADDRESS3 0x4A
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#define LM75AD_ADDRESS4 0x4B
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#define LM75AD_ADDRESS5 0x4C
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#define LM75AD_ADDRESS6 0x4D
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#define LM75AD_ADDRESS7 0x4E
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#define LM75AD_ADDRESS8 0x4F
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#define LM75_TEMP_REGISTER 0x00
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#define LM75_CONF_REGISTER 0x01
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#define LM75_THYST_REGISTER 0x02
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#define LM75_TOS_REGISTER 0x03
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uint8_t lm75ad_type = 0;
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uint8_t lm75ad_address;
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uint8_t lm75ad_addresses[] = { LM75AD_ADDRESS1, LM75AD_ADDRESS2, LM75AD_ADDRESS3, LM75AD_ADDRESS4, LM75AD_ADDRESS5, LM75AD_ADDRESS6, LM75AD_ADDRESS7, LM75AD_ADDRESS8 };
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int16_t LM75ADGetTempRegister(void)
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{
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uint16_t res = I2cRead16(lm75ad_address, LM75_TEMP_REGISTER);
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return (int16_t)res;
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}
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void LM75ADDetect()
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{
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uint8_t buffer;
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if (lm75ad_type) {
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return;
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}
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for (byte i = 0; i < sizeof(lm75ad_addresses); i++) {
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lm75ad_address = lm75ad_addresses[i];
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if (I2cValidRead8(&buffer,lm75ad_address,LM75_CONF_REGISTER)) {
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lm75ad_type = 1;
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snprintf_P(log_data, sizeof(log_data), S_LOG_I2C_FOUND_AT, "LM75AD", lm75ad_address);
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AddLog(LOG_LEVEL_DEBUG);
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break;
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}
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}
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}
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float LM75ADConvertTemp(uint16_t t) {
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float tmpt;
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if (t & 0x8000) { // we are getting a negative temperature value
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t=t<<1; // shift out the MSB
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t=t>>6; // shift value into place (5 LSB not used + the MSB we shifted out to make it zero)
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tmpt=t*0.125*-1;
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} else { // we're getting a positive value
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t=t>>5; // shift value into place (5 LSB not used)
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tmpt=t*0.125;
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}
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return tmpt;
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}
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void LM75ADShow(boolean json)
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{
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if (lm75ad_type) {
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char temperature[10];
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uint16_t lm75ad_value = LM75ADGetTempRegister();
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float t=LM75ADConvertTemp(lm75ad_value);
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dtostrfd(t, Settings.flag2.temperature_resolution, temperature);
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if (json) {
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snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("%s,\"LM75AD\":{\"" D_JSON_TEMPERATURE "\":%s}"), mqtt_data, temperature);
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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_TEMP, mqtt_data, "LM75AD", temperature, TempUnit());
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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_26
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boolean Xsns26(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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LM75ADDetect();
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break;
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case FUNC_JSON_APPEND:
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LM75ADShow(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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LM75ADShow(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_LM75AD
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/*
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xdrv_26_lm75ad.ino - Support for I2C LM75AD Temperature Sensor
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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_LM75AD
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/*********************************************************************************************\
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* LM75AD
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\*********************************************************************************************/
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#define LM75AD_ADDRESS1 0x48
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#define LM75AD_ADDRESS2 0x49
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#define LM75AD_ADDRESS3 0x4A
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#define LM75AD_ADDRESS4 0x4B
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#define LM75AD_ADDRESS5 0x4C
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#define LM75AD_ADDRESS6 0x4D
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#define LM75AD_ADDRESS7 0x4E
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#define LM75AD_ADDRESS8 0x4F
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#define LM75_TEMP_REGISTER 0x00
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#define LM75_CONF_REGISTER 0x01
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#define LM75_THYST_REGISTER 0x02
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#define LM75_TOS_REGISTER 0x03
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uint8_t lm75ad_type = 0;
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uint8_t lm75ad_address;
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uint8_t lm75ad_addresses[] = { LM75AD_ADDRESS1, LM75AD_ADDRESS2, LM75AD_ADDRESS3, LM75AD_ADDRESS4, LM75AD_ADDRESS5, LM75AD_ADDRESS6, LM75AD_ADDRESS7, LM75AD_ADDRESS8 };
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int16_t LM75ADGetTempRegister(void)
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{
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uint16_t res = I2cRead16(lm75ad_address, LM75_TEMP_REGISTER);
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return (int16_t)res;
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}
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void LM75ADDetect()
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{
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uint8_t buffer;
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if (lm75ad_type) {
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return;
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}
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for (byte i = 0; i < sizeof(lm75ad_addresses); i++) {
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lm75ad_address = lm75ad_addresses[i];
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if (I2cValidRead8(&buffer,lm75ad_address,LM75_CONF_REGISTER)) {
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lm75ad_type = 1;
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snprintf_P(log_data, sizeof(log_data), S_LOG_I2C_FOUND_AT, "LM75AD", lm75ad_address);
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AddLog(LOG_LEVEL_DEBUG);
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break;
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}
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}
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}
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float LM75ADConvertTemp(uint16_t t) {
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float tmpt;
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if (t & 0x8000) { // we are getting a negative temperature value
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t=t<<1; // shift out the MSB
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t=t>>6; // shift value into place (5 LSB not used + the MSB we shifted out to make it zero)
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tmpt=t*0.125*-1;
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} else { // we're getting a positive value
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t=t>>5; // shift value into place (5 LSB not used)
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tmpt=t*0.125;
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}
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if (!isnan(tmpt) && Settings.flag.temperature_conversion) {
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tmpt = tmpt * 1.8 + 32; // Fahrenheit
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}
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return tmpt;
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}
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void LM75ADShow(boolean json)
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{
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if (lm75ad_type) {
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char temperature[10];
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uint16_t lm75ad_value = LM75ADGetTempRegister();
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float t=LM75ADConvertTemp(lm75ad_value);
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dtostrfd(t, Settings.flag2.temperature_resolution, temperature);
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if (json) {
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snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("%s,\"LM75AD\":{\"" D_JSON_TEMPERATURE "\":%s}"), mqtt_data, temperature);
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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_TEMP, mqtt_data, "LM75AD", temperature, TempUnit());
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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_26
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boolean Xsns26(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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LM75ADDetect();
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break;
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case FUNC_JSON_APPEND:
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LM75ADShow(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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LM75ADShow(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_LM75AD
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#endif // USE_I2C
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