Tasmota/tasmota/xdrv_52_3_berry_tasmota.ino

/*
  xdrv_52_3_berry_tasmota.ino - Berry scripting language, native fucnctions

  Copyright (C) 2021 Stephan Hadinger, Berry language by Guan Wenliang https://github.com/Skiars/berry

  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/>.
*/


#ifdef USE_BERRY

#include <berry.h>
#include <Wire.h>

const uint32_t BERRY_MAX_LOGS = 16;   // max number of print output recorded when outside of REPL, used to avoid infinite grow of logs
const uint32_t BERRY_MAX_REPL_LOGS = 1024;   // max number of print output recorded when inside REPL

// /*********************************************************************************************\
//  * Return C callback from index
//  *
// \*********************************************************************************************/
// extern "C" {
//   extern int32_t be_cb__get_cb(struct bvm *vm);
//   int32_t be_cb__get_cb(struct bvm *vm) {
//     int32_t argc = be_top(vm); // Get the number of arguments
//     if (argc >= 2 && be_isint(vm, 2)) {
//       int32_t idx = be_toint(vm, 2);
//       if (idx >= 0 && idx < ARRAY_SIZE(berry_callback_array)) {
//         const berry_callback_t c_ptr = berry_callback_array[idx];
//         be_pushcomptr(vm, (void*) c_ptr);
//         be_return(vm);
//       }
//     }
//     be_raise(vm, kTypeError, nullptr);
//   }
// }

/*********************************************************************************************\
 * Native functions mapped to Berry functions
 *
 * log(msg:string [,log_level:int]) ->nil
 *
 * import tasmota
 *
 * tasmota.get_free_heap() -> int
 * tasmota.publish(topic:string, payload:string[, retain:bool]) -> nil
 * tasmota.cmd(command:string) -> string
 * tasmota.get_option(index:int) -> int
 * tasmota.millis([delay:int]) -> int
 * tasmota.time_reached(timer:int) -> bool
 * tasmota.yield() -> nil
 *
 * tasmota.get_light([index:int = 0]) -> map
 * tasmota.get_power([index:int = 0]) -> bool
 * tasmota.set_power(idx:int, power:bool) -> bool or nil
 * tasmota.set_light(idx:int, values:map) -> map
 *
\*********************************************************************************************/
extern "C" {
  // Berry: `tasmota.publish(topic, payload [, retain:bool, start:int, len:int]) -> nil``
  //
  int32_t l_publish(struct bvm *vm);
  int32_t l_publish(struct bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top >= 3 && be_isstring(vm, 2) && (be_isstring(vm, 3) || be_isbytes(vm, 3))) {  // 2 mandatory string arguments
      bool retain = false;
      int32_t payload_start = 0;
      int32_t len = -1;   // send all of it
      if (top >= 4) { retain = be_tobool(vm, 4); }
      if (top >= 5) {
        payload_start = be_toint(vm, 5);
        if (payload_start < 0) payload_start = 0;
      }
      if (top >= 6) { len = be_toint(vm, 6); }
      const char * topic = be_tostring(vm, 2);
      const char * payload = nullptr;
      size_t payload_len = 0;

      if (be_isstring(vm, 3)) {
        payload = be_tostring(vm, 3);
        payload_len = strlen(payload);
      } else {
        payload = (const char *) be_tobytes(vm, 3, &payload_len);
      }
      if (!payload) { be_raise(vm, "value_error", "Empty payload"); }

      // adjust start and len
      if (payload_start >= payload_len) { len = 0; }              // send empty packet
      else if (len < 0) { len = payload_len - payload_start; }    // send all packet, adjust len
      else if (payload_start + len > payload_len) { len = payload_len - payload_start; }    // len is too long, adjust
      // adjust start
      payload = payload + payload_start;

      be_pop(vm, be_top(vm));   // clear stack to avoid any indirect warning message in subsequent calls to Berry

      MqttPublishPayload(topic, payload, len, retain);

      be_return_nil(vm); // Return
    }
    be_raise(vm, kTypeError, nullptr);
  }

  // Berry: `tasmota.publish_result(payload:string, subtopic:string) -> nil``
  //
  int32_t l_publish_result(struct bvm *vm);
  int32_t l_publish_result(struct bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top >= 3 && be_isstring(vm, 2) && be_isstring(vm, 3)) {  // 2 mandatory string arguments
      const char * payload = be_tostring(vm, 2);
      const char * subtopic = be_tostring(vm, 3);
      Response_P(PSTR("%s"), payload);
      be_pop(vm, top);
      MqttPublishPrefixTopicRulesProcess_P(RESULT_OR_TELE, subtopic);
      be_return_nil(vm); // Return
    }
    be_raise(vm, kTypeError, nullptr);
  }

  // Berry: `tasmota.cmd(command:string) -> string`
  //
  int32_t l_cmd(struct bvm *vm);
  int32_t l_cmd(struct bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top == 2 && be_isstring(vm, 2)) {  // only 1 argument of type string accepted
      const char * command = be_tostring(vm, 2);
      be_pop(vm, top);    // clear the stack before calling, because of re-entrant call to Berry in a Rule
      ExecuteCommand(command, SRC_BERRY);
      be_return_nil(vm); // Return
    }
    be_raise(vm, kTypeError, nullptr);
  }

  // Berry: tasmota.millis([delay:int]) -> int
  //
  int32_t l_millis(struct bvm *vm);
  int32_t l_millis(struct bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top == 1 || (top == 2 && be_isint(vm, 2))) {  // only 1 argument of type string accepted
      uint32_t delay = 0;
      if (top == 2) {
        delay = be_toint(vm, 2);
      }
      uint32_t ret_millis = millis() + delay;
      be_pushint(vm, ret_millis);
      be_return(vm); // Return
    }
    be_raise(vm, kTypeError, nullptr);
  }

  // Berry: tasmota.get_option(index:int) -> int
  //
  int32_t l_getoption(struct bvm *vm);
  int32_t l_getoption(struct bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top == 2 && be_isint(vm, 2)) {
      uint32_t opt = GetOption(be_toint(vm, 2));
      be_pushint(vm, opt);
      be_return(vm); // Return
    }
    be_raise(vm, kTypeError, nullptr);
  }

  // Berry: tasmota.time_reached(timer:int) -> bool
  //
  int32_t l_timereached(struct bvm *vm);
  int32_t l_timereached(struct bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top == 2 && be_isint(vm, 2)) {  // only 1 argument of type string accepted
      uint32_t timer = be_toint(vm, 2);
      bool reached = TimeReached(timer);
      be_pushbool(vm, reached);
      be_return(vm); // Return
    }
    be_raise(vm, kTypeError, nullptr);
  }

  // Berry: tasmota.time_reached(timer:int) -> bool
  //
  int32_t l_rtc(struct bvm *vm);
  int32_t l_rtc(struct bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top == 1) {  // no argument (instance only)
      be_newobject(vm, "map");
      be_map_insert_int(vm, "utc", Rtc.utc_time);
      be_map_insert_int(vm, "local", Rtc.local_time);
      be_map_insert_int(vm, "restart", Rtc.restart_time);
      be_map_insert_int(vm, "timezone", Rtc.time_timezone);
      be_pop(vm, 1);
      be_return(vm);
    }
    be_raise(vm, kTypeError, nullptr);
  }

  // Berry: tasmota.memory() -> map
  //
  int32_t l_memory(struct bvm *vm);
  int32_t l_memory(struct bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top == 1) {  // no argument (instance only)
      be_newobject(vm, "map");
      be_map_insert_int(vm, "flash", ESP.getFlashChipSize() / 1024);
      be_map_insert_int(vm, "program", ESP_getSketchSize() / 1024);
      be_map_insert_int(vm, "program_free", ESP.getFreeSketchSpace() / 1024);
      be_map_insert_int(vm, "heap_free", ESP_getFreeHeap() / 1024);
      be_map_insert_int(vm, "frag", ESP_getHeapFragmentation());
      // give info about stack size
      be_map_insert_int(vm, "stack_size", SET_ESP32_STACK_SIZE / 1024);
      be_map_insert_int(vm, "stack_low", uxTaskGetStackHighWaterMark(nullptr) / 1024);
      if (UsePSRAM()) {
        be_map_insert_int(vm, "psram", ESP.getPsramSize() / 1024);
        be_map_insert_int(vm, "psram_free", ESP.getFreePsram() / 1024);
      } else {
        // IRAM information
        int32_t iram_free = (int32_t)heap_caps_get_free_size(MALLOC_CAP_32BIT) - (int32_t)heap_caps_get_free_size(MALLOC_CAP_8BIT);
        be_map_insert_int(vm, "iram_free", iram_free / 1024);
      }
      be_pop(vm, 1);
      be_return(vm);
    }
    be_raise(vm, kTypeError, nullptr);
  }

  // Berry: tasmota.wifi() -> map
  //
  int32_t l_wifi(struct bvm *vm);
  int32_t l_wifi(struct bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top == 1) {  // no argument (instance only)
      be_newobject(vm, "map");
      if (Settings->flag4.network_wifi) {
        int32_t rssi = WiFi.RSSI();
        be_map_insert_int(vm, "rssi", rssi);
        be_map_insert_int(vm, "quality", WifiGetRssiAsQuality(rssi));
#if LWIP_IPV6
        String ipv6_addr = WifiGetIPv6();
        if (ipv6_addr != "") {
          be_map_insert_str(vm, "ip6", ipv6_addr.c_str());
        }
#endif
        if (static_cast<uint32_t>(WiFi.localIP()) != 0) {
          be_map_insert_str(vm, "mac", WiFi.macAddress().c_str());
          be_map_insert_str(vm, "ip", WiFi.localIP().toString().c_str());
        }
      }
      be_pop(vm, 1);
      be_return(vm);
    }
    be_raise(vm, kTypeError, nullptr);
  }

  // Berry: tasmota.eth() -> map
  //
  int32_t l_eth(struct bvm *vm);
  int32_t l_eth(struct bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top == 1) {  // no argument (instance only)
      be_newobject(vm, "map");
#ifdef USE_ETHERNET
      if (static_cast<uint32_t>(EthernetLocalIP()) != 0) {
        be_map_insert_str(vm, "mac", EthernetMacAddress().c_str());
        be_map_insert_str(vm, "ip", EthernetLocalIP().toString().c_str());
      }
#endif
      be_pop(vm, 1);
      be_return(vm);
    }
    be_raise(vm, kTypeError, nullptr);
  }

  static void l_push_time(bvm *vm, struct tm *t, const char *unparsed) {
    be_newobject(vm, "map");
    be_map_insert_int(vm, "year", t->tm_year + 1900);
    be_map_insert_int(vm, "month", t->tm_mon + 1);
    be_map_insert_int(vm, "day", t->tm_mday);
    be_map_insert_int(vm, "hour", t->tm_hour);
    be_map_insert_int(vm, "min", t->tm_min);
    be_map_insert_int(vm, "sec", t->tm_sec);
    be_map_insert_int(vm, "weekday", t->tm_wday);
    if (unparsed) be_map_insert_str(vm, "unparsed", unparsed);
    be_pop(vm, 1);
  }

  int32_t l_time_dump(bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top == 2 && be_isint(vm, 2)) {
      time_t ts = be_toint(vm, 2);
      struct tm *t = gmtime(&ts);
      l_push_time(vm, t, NULL);
      be_return(vm);
    }
    be_raise(vm, kTypeError, nullptr);
  }

  int32_t l_strftime(bvm *vm) {
    int32_t argc = be_top(vm); // Get the number of arguments
    if (argc == 3 && be_isstring(vm, 2) && be_isint(vm, 3)) {
      const char * format = be_tostring(vm, 2);
      time_t ts = be_toint(vm, 3);
      struct tm *t = gmtime(&ts);
      char s[64] = {0};
      strftime(s, sizeof(s), format, t);
      be_pushstring(vm, s);
      be_return(vm);
    }
    be_raise(vm, kTypeError, nullptr);
  }

  int32_t l_strptime(bvm *vm) {
    int32_t argc = be_top(vm); // Get the number of arguments
    if (argc == 3 && be_isstring(vm, 2) && be_isstring(vm, 3)) {
      const char * input = be_tostring(vm, 2);
      const char * format = be_tostring(vm, 3);
      struct tm t = {0};
      char * ret = strptime(input, format, &t);
      if (ret) {
        l_push_time(vm, &t, ret);
        be_return(vm);
      } else {
        be_return_nil(vm);
      }
    }
    be_raise(vm, kTypeError, nullptr);
  }

  // Berry: tasmota.delay(timer:int) -> nil
  //
  int32_t l_delay(struct bvm *vm);
  int32_t l_delay(struct bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top == 2 && be_isint(vm, 2)) {  // only 1 argument of type string accepted
      uint32_t timer = be_toint(vm, 2);
      delay(timer);
      be_return_nil(vm); // Return
    }
    be_raise(vm, kTypeError, nullptr);
  }

  // Berry: `yield() -> nil`
  // ESP object
  int32_t l_yield(bvm *vm);
  int32_t l_yield(bvm *vm) {
    return be_call_c_func(vm, (void*) &BrTimeoutYield, NULL, "-");
  }

  // Berry: tasmota.scale_uint(int * 5) -> int
  //
  int32_t l_scaleuint(struct bvm *vm);
  int32_t l_scaleuint(struct bvm *vm) {
    return be_call_c_func(vm, (void*) &changeUIntScale, "i", "-iiiii");
  }

  int32_t l_respCmnd(bvm *vm);
  int32_t l_respCmnd(bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top == 2) {
      const char *msg = be_tostring(vm, 2);
      Response_P("%s", msg);
      be_return_nil(vm); // Return nil when something goes wrong
    }
    be_raise(vm, kTypeError, nullptr);
  }

  int32_t l_respCmndStr(bvm *vm);
  int32_t l_respCmndStr(bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top == 2) {
      const char *msg = be_tostring(vm, 2);
      ResponseCmndChar(msg);
      be_return_nil(vm); // Return nil when something goes wrong
    }
    be_raise(vm, kTypeError, nullptr);
  }

  int32_t l_respCmndDone(bvm *vm);
  int32_t l_respCmndDone(bvm *vm) {
    return be_call_c_func(vm, (void*) &ResponseCmndDone, NULL, "-");
  }

  int32_t l_respCmndError(bvm *vm);
  int32_t l_respCmndError(bvm *vm) {
    return be_call_c_func(vm, (void*) &ResponseCmndError, NULL, "-");
  }

  int32_t l_respCmndFailed(bvm *vm);
  int32_t l_respCmndFailed(bvm *vm) {
    return be_call_c_func(vm, (void*) &ResponseCmndFailed, NULL, "-");
  }

  // update XdrvMailbox.command with actual command
  int32_t l_resolveCmnd(bvm *vm);
  int32_t l_resolveCmnd(bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top == 2 && be_isstring(vm, 2)) {
      const char *msg = be_tostring(vm, 2);
      strlcpy(XdrvMailbox.command, msg, CMDSZ);
      be_return_nil(vm); // Return nil when something goes wrong
    }
    be_raise(vm, kTypeError, nullptr);
  }

  // Response_append
  int32_t l_respAppend(bvm *vm);
  int32_t l_respAppend(bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top == 2 && be_isstring(vm, 2)) {
      const char *msg = be_tostring(vm, 2);
      be_pop(vm, top);  // avoid Error be_top is non zero message
      ResponseAppend_P(PSTR("%s"), msg);
      be_return_nil(vm); // Return nil when something goes wrong
    }
    be_raise(vm, kTypeError, nullptr);
  }

  // web append with decimal conversion
  int32_t l_webSend(bvm *vm);
  int32_t l_webSend(bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top == 2 && be_isstring(vm, 2)) {
      const char *msg = be_tostring(vm, 2);
      be_pop(vm, top);  // avoid Error be_top is non zero message
      WSContentSend_P(PSTR("%s"), msg);
      be_return_nil(vm); // Return nil when something goes wrong
    }
    be_raise(vm, kTypeError, nullptr);
  }

  // web append with decimal conversion
  int32_t l_webSendDecimal(bvm *vm);
  int32_t l_webSendDecimal(bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top == 2 && be_isstring(vm, 2)) {
      const char *msg = be_tostring(vm, 2);
      be_pop(vm, top);  // avoid Error be_top is non zero message
      WSContentSend_PD(PSTR("%s"), msg);
      be_return_nil(vm); // Return nil when something goes wrong
    }
    be_raise(vm, kTypeError, nullptr);
  }

  // get power
  int32_t l_getpower(bvm *vm);
  int32_t l_getpower(bvm *vm) {
    power_t pow = TasmotaGlobal.power;
    int32_t top = be_top(vm); // Get the number of arguments
    if (top == 2 && be_isint(vm, 2)) {
      pow = be_toint(vm, 2);
    }
    be_newobject(vm, "list");
    for (uint32_t i = 0; i < TasmotaGlobal.devices_present; i++) {
      be_pushbool(vm, bitRead(pow, i));
      be_data_push(vm, -2);
      be_pop(vm, 1);
    }
    be_pop(vm, 1);
    be_return(vm); // Return
  }

  int32_t l_setpower(bvm *vm);
  int32_t l_setpower(bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top == 3 && be_isint(vm, 2) && be_isbool(vm, 3)) {
      int32_t idx = be_toint(vm, 2);
      bool power = be_tobool(vm, 3);
      if ((idx >= 0) && (idx < TasmotaGlobal.devices_present)) {
        be_pop(vm, top);  // avoid Error be_top is non zero message
        ExecuteCommandPower(idx + 1, (power) ? POWER_ON : POWER_OFF, SRC_BERRY);
        be_pushbool(vm, power);
        be_return(vm); // Return
      } else {
        be_return_nil(vm);
      }
    }
    be_raise(vm, kTypeError, nullptr);
  }

  // get power
  int32_t l_getswitch(bvm *vm);
  int32_t l_getswitch(bvm *vm) {
    be_newobject(vm, "list");
    for (uint32_t i = 0; i < MAX_SWITCHES; i++) {
      if (PinUsed(GPIO_SWT1, i)) {
        be_pushbool(vm, Switch.virtual_state[i] == PRESSED);
        be_data_push(vm, -2);
        be_pop(vm, 1);
      }
    }
    be_pop(vm, 1);
    be_return(vm); // Return
  }

#ifdef USE_I2C
  // I2C specific
  // Berry: `i2c_enabled(index:int) -> bool` is I2C device enabled
  int32_t l_i2cenabled(struct bvm *vm);
  int32_t l_i2cenabled(struct bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top == 2 && be_isint(vm, 2)) {
      int32_t index = be_toint(vm, 2);
      be_pop(vm, top);  // avoid Error be_top is non zero message
      bool enabled = I2cEnabled(index);
      be_pushbool(vm, enabled);
      be_return(vm); // Return
    }
    be_raise(vm, kTypeError, nullptr);
  }
#else // USE_I2C
  int32_t l_i2cenabled(struct bvm *vm) __attribute__ ((weak, alias ("b_wire_i2cmissing")));
#endif // USE_I2C

}

/*********************************************************************************************\
 * Native functions mapped to Berry functions
 *
 * log(msg:string [,log_level:int]) ->nil
 *
\*********************************************************************************************/
extern "C" {
  // Berry: `log(msg:string [,log_level:int]) ->nil`
  // Logs the string at LOG_LEVEL_INFO (loglevel=2)
  // We allow this function to be called as a method or a direct function
  // if the first argument is an instance, we remove it
  int32_t l_logInfo(struct bvm *vm);
  int32_t l_logInfo(struct bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top >= 2 && be_isstring(vm, 2)) {  // only 1 argument of type string accepted
      const char * msg = be_tostring(vm, 2);
      uint32_t log_level = LOG_LEVEL_INFO;
      if (top >= 3 && be_isint(vm, 3)) {
        log_level = be_toint(vm, 3);
        if (log_level > LOG_LEVEL_DEBUG_MORE) { log_level = LOG_LEVEL_DEBUG_MORE; }
      }
      AddLog(log_level, PSTR("%s"), msg);
      be_return(vm); // Return
    }
    be_return_nil(vm); // Return nil when something goes wrong
  }

  // Berry: `getFreeHeap() -> int`
  // ESP object
  int32_t l_getFreeHeap(bvm *vm);
  int32_t l_getFreeHeap(bvm *vm) {
    be_pushint(vm, ESP.getFreeHeap());
    be_return(vm);
  }

  // Berry: `arvh() -> string`
  // ESP object
  int32_t l_arch(bvm *vm);
  int32_t l_arch(bvm *vm) {
    be_pushstring(vm, ESP32_ARCH);
    be_return(vm);
  }

  // Berry: `save(file:string, f:closure) -> bool`
  int32_t l_save(struct bvm *vm);
  int32_t l_save(struct bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    if (top == 3 && be_isstring(vm, 2) && be_isclosure(vm, 3)) {  // only 1 argument of type string accepted
      const char *fname = be_tostring(vm, 2);
      int32_t ret = be_savecode(vm, fname);
      be_pushint(vm, ret);
      be_return(vm); // Return
    }
    be_raise(vm, kTypeError, nullptr);
  }
}

/*********************************************************************************************\
 * Native functions mapped to Berry functions
 *
 * read_sensors(show_sensor:bool) -> string
 *
\*********************************************************************************************/
extern "C" {
  int32_t l_read_sensors(struct bvm *vm);
  int32_t l_read_sensors(struct bvm *vm) {
    int32_t top = be_top(vm); // Get the number of arguments
    bool sensor_display = false;    // don't trigger a display by default
    if (top >= 2) {
      sensor_display = be_tobool(vm, 2);
    }
    be_pop(vm, top);    // clear stack to avoid `Error be_top is non zero=1` errors
    ResponseClear();
    if (MqttShowSensor(sensor_display)) {
      // return string
      be_pushstring(vm, ResponseData());
      be_return(vm);
    } else {
      be_return_nil(vm);
    }
  }
}

/*********************************************************************************************\
 * Logging functions
 *
\*********************************************************************************************/
// called as a replacement to Berry `print()`
void berry_log(const char * berry_buf);
void berry_log(const char * berry_buf) {
  const char * pre_delimiter = nullptr;   // do we need to prepend a delimiter if no REPL command
  size_t max_logs = berry.repl_active ? BERRY_MAX_REPL_LOGS : BERRY_MAX_LOGS;
  if (berry.log.log.length() == 0) {
    pre_delimiter = BERRY_CONSOLE_CMD_DELIMITER;
  }
  if (berry.log.log.length() >= BERRY_MAX_LOGS) {
    berry.log.log.remove(berry.log.log.head());
  }
  berry.log.addString(berry_buf, pre_delimiter, "\n");
  AddLog(LOG_LEVEL_INFO, PSTR("%s"), berry_buf);
}

const uint16_t LOGSZ = 128;                 // Max number of characters in log line

extern "C" {
  void berry_log_C(const char * berry_buf, ...) {
    // To save stack space support logging for max text length of 128 characters
    char log_data[LOGSZ];

    va_list arg;
    va_start(arg, berry_buf);
    uint32_t len = ext_vsnprintf_P(log_data, LOGSZ-3, berry_buf, arg);
    va_end(arg);
    if (len+3 > LOGSZ) { strcat(log_data, "..."); }  // Actual data is more
    berry_log(log_data);
  }

  void tasmota_log_C(int32_t loglevel, const char * berry_buf, ...) {
    va_list arg;
    va_start(arg, berry_buf);
    char* log_data = ext_vsnprintf_malloc_P(berry_buf, arg);
    va_end(arg);
    if (log_data == nullptr) { return; }
    AddLogData(loglevel, log_data);
    free(log_data);
  }
}

#endif  // USE_BERRY