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tasmota.c
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tasmota.c
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#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
#include <limits.h>
#include <string.h>
#include "mcp.h"
#include "mqtt.h"
#include "xmas.h"
#include "utils.h"
#include "frozen.h"
#include "fronius.h"
#include "flamingo.h"
#include "tasmota-config.h"
#define MEAN 10
static tasmota_state_t *tasmota_state = NULL;
static unsigned int bh1750_lux_mean[MEAN];
static int mean;
//static void dump(const char *prefix, unsigned int id, const char *topic, uint16_t tsize, const char *message, size_t msize) {
// char *t = make_string(topic, tsize);
// char *m = make_string(message, msize);
// xlog("%s %06X topic('%s') = %s", prefix, id, t, m);
// free(t);
// free(m);
//}
// topic('tele/7ECDD0/SENSOR') = {"Time":"2024-05-24T10:23:02","Switch1":"OFF"}
// ^^^^^^
static unsigned int get_id(const char *topic, size_t size) {
int slash1 = 0, slash2 = 0;
for (int i = 0; i < size; i++)
if (topic[i] == '/') {
if (!slash1)
slash1 = i;
else if (!slash2)
slash2 = i;
}
if (slash1 && slash2 && ((slash2 - slash1) == 7)) {
char id[7];
memcpy(id, &topic[slash1 + 1], 6);
id[6] = '\0';
long l = strtol(id, NULL, 16);
return (unsigned int) l;
}
return 0;
}
// find existing tasmota state or create a new one
static tasmota_state_t* get_state(unsigned int id) {
tasmota_state_t *ts = tasmota_state;
while (ts != NULL) {
if (ts->id == id)
return ts;
ts = ts->next;
}
tasmota_state_t *ts_new = malloc(sizeof(tasmota_state_t));
ts_new->id = id;
ts_new->relay1 = -1;
ts_new->relay2 = -1;
ts_new->position = -1;
ts_new->timer = 0;
ts_new->next = NULL;
if (tasmota_state == NULL)
// this is the head
tasmota_state = ts_new;
else {
// append to last in chain
ts = tasmota_state;
while (ts->next != NULL)
ts = ts->next;
ts->next = ts_new;
}
xlog("TASMOTA created new state for %06X", ts_new->id);
return ts_new;
}
// execute tasmota BACKLOG command via mqtt publish
static int backlog(unsigned int id, const char *cmd) {
char topic[32];
snprintf(topic, 32, "cmnd/%6X/Backlog", id);
xlog("TASMOTA executing backlog command %6X :: %s", topic, cmd);
return publish(topic, cmd);
}
// update tasmota relay power state
static void update_relay(unsigned int id, int relay, int power) {
tasmota_state_t *ss = get_state(id);
if (relay == 0 || relay == 1) {
ss->relay1 = power;
xlog("TASMOTA updated %6X relay1 state to %d", ss->id, power);
} else if (relay == 2) {
ss->relay2 = power;
xlog("TASMOTA updated %6X relay2 state to %d", ss->id, power);
} else
xlog("TASMOTA no relay%d at %6X", ss->id, relay);
}
// update tasmota shutter position
static void update_shutter(unsigned int id, unsigned int position) {
tasmota_state_t *ss = get_state(id);
ss->position = position;
xlog("TASMOTA updated %6X shutter position to %d", ss->id, position);
}
// trigger a button press event
static void trigger(unsigned int id, int button, int action) {
// we do not track button 'release', only button 'press'
if (!action)
return;
xlog("TASMOTA trigger %6X %d %d", id, button, action);
if (id == KUECHE && button == 2) {
// forcing first boiler to heat up for 10 minutes
#ifdef FRONIUS
fronius_override("boiler1");
#endif
return;
}
// check tasmota-config.h
for (int i = 0; i < ARRAY_SIZE(tasmota_config); i++) {
tasmota_config_t sc = tasmota_config[i];
tasmota_state_t *ss = get_state(sc.id);
int power = (sc.relay == 0 || sc.relay == 1) ? ss->relay1 : ss->relay2;
if (sc.t1 == id && sc.t1b == button) {
if (power != 1)
tasmota_power(sc.id, sc.relay, 1);
else
tasmota_power(sc.id, sc.relay, 0);
}
if (sc.t2 == id && sc.t2b == button) {
if (power != 1)
tasmota_power(sc.id, sc.relay, 1);
else
tasmota_power(sc.id, sc.relay, 0);
}
if (sc.t3 == id && sc.t3b == button) {
if (power != 1)
tasmota_power(sc.id, sc.relay, 1);
else
tasmota_power(sc.id, sc.relay, 0);
}
if (sc.t4 == id && sc.t4b == button) {
if (power != 1)
tasmota_power(sc.id, sc.relay, 1);
else
tasmota_power(sc.id, sc.relay, 0);
}
}
}
// decode flamingo message
static int flamingo(unsigned int code) {
uint16_t xmitter;
uint8_t command, channel, payload, rolling;
xlog("TASMOTA flamingo");
flamingo28_decode(code, &xmitter, &command, &channel, &payload, &rolling);
switch (xmitter) {
case 0x835a:
switch (channel) {
case 1:
if (command == 2)
xmas_on();
else if (command == 0)
xmas_off();
break;
}
break;
}
return 0;
}
static void bh1750_calc_mean() {
bh1750_lux_mean[mean++] = sensors->bh1750_lux;
if (mean == MEAN)
mean = 0;
unsigned long sum = 0;
for (int i = 0; i < MEAN; i++)
sum += bh1750_lux_mean[i];
sensors->bh1750_lux_mean = sum / MEAN;
}
static void dispatch_button(unsigned int id, const char *topic, uint16_t tsize, const char *message, size_t msize) {
char fmt[32], a[5];
for (int i = 0; i < 8; i++) {
snprintf(fmt, 32, "{Switch%d:%%Q}", i);
char *sw = NULL;
if (json_scanf(message, msize, fmt, &sw)) {
// Shelly1+2
if (!strcmp(sw, ON))
trigger(id, i, 1);
else if (!strcmp(sw, OFF))
trigger(id, i, 0);
else {
// Shelly4
if (json_scanf(sw, strlen(sw), "{Action:%s}", &a)) {
if (!strcmp(a, ON))
trigger(id, i, 1);
else
trigger(id, i, 0);
}
}
free(sw);
}
}
}
static int dispatch_tele_sensor(unsigned int id, const char *topic, uint16_t tsize, const char *message, size_t msize) {
char *bh1750 = NULL;
char *bmp280 = NULL;
char *bmp085 = NULL;
char *sht31 = NULL;
char *htu21 = NULL;
char *analog = NULL;
json_scanf(message, msize, "{BH1750:%Q, BMP280:%Q, BMP085:%Q, SHT3X:%Q, HTU21:%Q, ANALOG:%Q}", &bh1750, &bmp280, &bmp085, &sht31, &htu21, &analog);
if (bh1750 != NULL) {
json_scanf(bh1750, strlen(bh1750), "{Illuminance:%d}", &sensors->bh1750_lux);
bh1750_calc_mean();
// xdebug("TASMOTA BH1750 %d lux, %d lux mean", sensors->bh1750_lux, sensors->bh1750_lux_mean);
free(bh1750);
}
if (bmp280 != NULL) {
json_scanf(bmp280, strlen(bmp280), "{Temperature:%f, Pressure:%f}", &sensors->bmp280_temp, &sensors->bmp280_baro);
// xdebug("TASMOTA BMP280 %.1f °C, %.1f hPa", sensors->bmp280_temp, sensors->bmp280_baro);
free(bmp280);
}
if (bmp085 != NULL) {
json_scanf(bmp085, strlen(bmp085), "{Temperature:%f, Pressure:%f}", &sensors->bmp085_temp, &sensors->bmp085_baro);
// xdebug("TASMOTA BMP085 %.1f °C, %.1f hPa", sensors->bmp085_temp, sensors->bmp085_baro);
free(bmp085);
}
if (sht31 != NULL) {
json_scanf(sht31, strlen(sht31), "{Temperature:%f, Humidity:%f, DewPoint:%f}", &sensors->sht31_temp, &sensors->sht31_humi, &sensors->sht31_dew);
// xdebug("TASMOTA SHT31 %.1f °C, humidity %.1f %, dewpoint %.1f °C", sensors->sht31_temp, sensors->sht31_humi, sensors->sht31_dew);
free(sht31);
}
if (htu21 != NULL) {
json_scanf(htu21, strlen(htu21), "{Temperature:%f, Humidity:%f, DewPoint:%f}", &sensors->htu21_temp, &sensors->htu21_humi, &sensors->htu21_dew);
// xdebug("TASMOTA HTU21 %.1f °C, humidity %.1f %, dewpoint %.1f °C", sensors->htu21_temp, sensors->htu21_humi, sensors->htu21_dew);
free(sht31);
}
if (analog != NULL) {
json_scanf(analog, strlen(analog), "{A0:%d}", &sensors->ml8511_uv);
// xdebug("TASMOTA ML8511 %d mV", sensors->ml8511_uv);
free(analog);
}
// TASMOTA 2FEFEE topic('tele/2FEFEE/SENSOR') = {"Time":"2024-05-24T14:09:31","Switch1":"OFF","Switch2":"ON","ANALOG":{"Temperature":40.3},"TempUnit":"C"}
dispatch_button(id, topic, tsize, message, msize);
return 0;
}
static int dispatch_tele_result(unsigned int id, const char *topic, uint16_t tsize, const char *message, size_t msize) {
char *rf = NULL;
json_scanf(message, msize, "{RfReceived:%Q}", &rf);
if (rf != NULL) {
unsigned int data, bits, proto, pulse;
json_scanf(rf, strlen(rf), "{Data:%x, Bits:%d, Protocol:%d, Pulse:%d}", &data, &bits, &proto, &pulse);
free(rf);
if (bits < 16 || (data & 0xffff) == 0xffff) {
// xlog("TASMOTA RF noise data=0x%x bits=%d protocol=%d pulse=%d", data, bits, proto, pulse);
return 0;
}
if (data == DOORBELL)
return notify("Ding", "Dong", "ding-dong.wav");
if (bits == 28)
return flamingo(data);
xlog("TASMOTA unknown RF received data=0x%x bits=%d protocol=%d pulse=%d", data, bits, proto, pulse);
}
return 0;
}
static int dispatch_tele(unsigned int id, const char *topic, uint16_t tsize, const char *message, size_t msize) {
if (ends_with("SENSOR", topic, tsize))
return dispatch_tele_sensor(id, topic, tsize, message, msize);
if (ends_with("RESULT", topic, tsize))
return dispatch_tele_result(id, topic, tsize, message, msize);
return 0;
}
static int dispatch_cmnd(unsigned int id, const char *topic, uint16_t tsize, const char *message, size_t msize) {
return 0;
}
static int dispatch_stat(unsigned int id, const char *topic, uint16_t tsize, const char *message, size_t msize) {
char a[5];
int i;
// scan for relay power state results
if (json_scanf(message, msize, "{POWER:%s}", &a))
update_relay(id, 0, !strcmp(a, ON) ? 1 : 0);
if (json_scanf(message, msize, "{POWER1:%s}", &a))
update_relay(id, 1, !strcmp(a, ON) ? 1 : 0);
if (json_scanf(message, msize, "{POWER2:%s}", &a))
update_relay(id, 2, !strcmp(a, ON) ? 1 : 0);
// scan for shutter position results
char *sh = NULL;
if (json_scanf(message, msize, "{Shutter1:%Q}", &sh)) {
if (json_scanf(sh, strlen(sh), "{Position:%d}", &i))
update_shutter(id, i);
free(sh);
}
// TASMOTA B20670 topic('stat/B20670/RESULT') = {"Switch3":{"Action":"ON"}}
dispatch_button(id, topic, tsize, message, msize);
return 0;
}
// handle a subscribed mqtt message
int tasmota_dispatch(const char *topic, uint16_t tsize, const char *message, size_t msize) {
unsigned int id = get_id(topic, tsize);
if (!id)
return 0;
// dump("TASMOTA", id, topic, tsize, message, msize);
// TELE
if (starts_with(TOPIC_TELE, topic, tsize))
return dispatch_tele(id, topic, tsize, message, msize);
// CMND
if (starts_with(TOPIC_CMND, topic, tsize))
return dispatch_cmnd(id, topic, tsize, message, msize);
// STAT
if (starts_with(TOPIC_STAT, topic, tsize))
return dispatch_stat(id, topic, tsize, message, msize);
return 0;
}
// execute tasmota POWER command via mqtt publish
int tasmota_power(unsigned int id, int relay, int cmd) {
char topic[32];
if (relay)
snprintf(topic, 32, "cmnd/%6X/POWER%d", id, relay);
else
snprintf(topic, 32, "cmnd/%6X/POWER", id);
if (cmd) {
// start timer if configured
for (int i = 0; i < ARRAY_SIZE(tasmota_config); i++) {
tasmota_config_t sc = tasmota_config[i];
if (sc.id == id)
if (sc.timer) {
tasmota_state_t *ss = get_state(sc.id);
ss->timer = sc.timer;
xlog("TASMOTA started timer for %06X %d", ss->id, ss->timer);
}
}
xlog("TASMOTA switching %6X:%d %s", id, relay, ON);
return publish(topic, ON);
} else {
xlog("TASMOTA switching %6X:%d %s", id, relay, OFF);
return publish(topic, OFF);
}
}
int tasmota_power_on(unsigned int id) {
return tasmota_power(id, 0, 1);
}
int tasmota_power_off(unsigned int id) {
return tasmota_power(id, 0, 0);
}
// execute tasmota shutter up/down
int tasmota_shutter(unsigned int id, unsigned int target) {
if (target == SHUTTER_POS)
return backlog(id, "ShutterPosition");
tasmota_state_t *ss = get_state(id);
if (target == SHUTTER_DOWN && ss->position != SHUTTER_DOWN)
return backlog(id, "ShutterClose");
if (target == SHUTTER_UP && ss->position != SHUTTER_UP)
return backlog(id, "ShutterOpen");
char value[20];
snprintf(value, 20, "ShutterPosition %d", target);
return backlog(id, value);
}
static void loop() {
if (pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL)) {
xlog("Error setting pthread_setcancelstate");
return;
}
while (1) {
sleep(1);
// decrease timers and switch off if timer reached 0
tasmota_state_t *ts = tasmota_state;
while (ts != NULL) {
if (ts->timer) {
ts->timer--;
if (ts->timer == 0) {
if (ts->relay1)
tasmota_power(ts->id, 0, 0);
if (ts->relay2)
tasmota_power(ts->id, 2, 0);
}
}
ts = ts->next;
}
}
}
static int init() {
// clear average value buffer
ZERO(bh1750_lux_mean);
mean = 0;
// initialize sensor data
sensors->bh1750_lux = UINT16_MAX;
sensors->bh1750_lux_mean = UINT16_MAX;
sensors->bmp085_temp = UINT16_MAX;
sensors->bmp085_baro = UINT16_MAX;
sensors->bmp280_temp = UINT16_MAX;
sensors->bmp280_baro = UINT16_MAX;
sensors->sht31_humi = UINT16_MAX;
sensors->sht31_temp = UINT16_MAX;
sensors->sht31_dew = UINT16_MAX;
sensors->ml8511_uv = UINT16_MAX;
return 0;
}
static void stop() {
}
MCP_REGISTER(tasmota, 3, &init, &stop, &loop);