Merge pull request #10447 from vic42/BS814_NG_2

New Feature: BS814A-2 Touch Driver

tasmota/language/af_AF.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFstuurder"
 #define D_SENSOR_RFRECV        "RFontvanger"

tasmota/language/bg_BG.h

@@ -640,6 +640,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/cs_CZ.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/de_DE.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/el_GR.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/en_GB.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/es_ES.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/fr_FR.h

@@ -637,6 +637,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RF TX"
 #define D_SENSOR_RFRECV        "RF RX"

tasmota/language/he_HE.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/hu_HU.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/it_IT.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 - SCK"
 #define D_SENSOR_HX711_DAT     "HX711 - DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RF - TX"
 #define D_SENSOR_RFRECV        "RF - RX"

tasmota/language/ko_KO.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/nl_NL.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/pl_PL.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/pt_BR.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/pt_PT.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/ro_RO.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/ru_RU.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/sk_SK.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/sv_SE.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/tr_TR.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/uk_UA.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFRecv"

tasmota/language/vi_VN.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/zh_CN.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/zh_TW.h

@@ -641,6 +641,8 @@
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
 #define D_SENSOR_FTC532        "FTC532"
+#define D_SENSOR_BS814_CLK     "BS814 CLK"
+#define D_SENSOR_BS814_DAT     "BS814 DAT"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/support_features.ino

@@ -698,8 +698,9 @@ void ResponseAppendFeatures(void)
 #ifdef USE_PID
     feature7 |= 0x00800000;  // xdrv_49_pid.ino
 #endif
-
+#ifdef USE_BS814A2
-//    feature7 |= 0x01000000;
+    feature7 |= 0x01000000;  // xdrv_51_bs814a2.ino
+#endif
 //    feature7 |= 0x02000000;
 //    feature7 |= 0x04000000;
 //    feature7 |= 0x08000000;

tasmota/tasmota_template.h

@@ -145,6 +145,7 @@ enum UserSelectablePins {
   GPIO_SDCARD_CS,
   GPIO_ROT1A_NP, GPIO_ROT1B_NP,        // Rotary switch
   GPIO_ADC_PH,                         // Analog PH Sensor
+  GPIO_BS814_CLK, GPIO_BS814_DAT,      // Holtek BS814A2 touch ctrlr
   GPIO_SENSOR_END };
 
 enum ProgramSelectablePins {
@@ -310,6 +311,7 @@ const char kSensorNames[] PROGMEM =
   D_SENSOR_SDCARD_CS "|"
   D_SENSOR_ROTARY " A_n|" D_SENSOR_ROTARY " B_n|"
   D_SENSOR_ADC_PH "|"
+  D_SENSOR_BS814_CLK "|" D_SENSOR_BS814_DAT "|"
   ;
 
 const char kSensorNamesFixed[] PROGMEM =
@@ -358,6 +360,10 @@ const uint16_t kGpioNiceList[] PROGMEM = {
 #ifdef USE_FTC532
   AGPIO(GPIO_FTC532),                   // FTC532 touch input
 #endif
+#ifdef USE_BS814A2
+  AGPIO(GPIO_BS814_CLK),                // Holtek BS814A2 touch ctrlr
+  AGPIO(GPIO_BS814_DAT),
+#endif
 
 /*-------------------------------------------------------------------------------------------*\
  * Protocol specifics

tasmota/xdrv_51_bs814a2.ino

@@ -0,0 +1,191 @@
+/*
+  xdrv_51_bs814a2.ino - BS814A-2 touch buttons support for Tasmota
+
+  Copyright (C) 2021 Peter Franck and 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/>.
+*/
+
+#ifdef USE_BS814A2
+/*********************************************************************************************\
+  THE PLAN [tm]:                        OUTCOME:
+  ==============                        ========
+  appear in a dropdown                  (BS814 CLK, BS814 DAT)
+  select 2 pins (clk, data)             DONE
+  poll data pin for low state           UNRELIABLE
+  generate high-speed clock (25kHz)     DONE
+  poll data bits on clock plateau       RISING EDGE
+  update data & report every 50 ms      DONE
+  error & retry logic (if reqired)      BASIC
+  MQTT message & rules hook             DONE
+  test on actual Hardware               DONE
+
+  THE PROTOCOL [tm]:
+  ==================
+  see Holtek-Semicon BS814A-2 datasheet for details
+  
+  *********************
+  * About this driver *
+  *********************
+
+  This driver implements the documented protocol of the Holtek BS814A-2 touch controller.
+  The protocol encodes the bitmap of touched keys in a syncronous serial data stream and
+  adds a 3-bit checksum to it. The Chip is supposed to alert the MCU of new key input by
+  pulling the data line low. This mechanism would have been nice but it didn't function
+  reliablly in my hardware sample. So I decided to poll the touch keys every 50 ms regard-
+  less of a change signal. The rest of the driver logic follows pretty much my previous
+  touch driver FTC532.
+
+  Usage:
+  ------
+  This driver does not actually switch anything. It is a pure "rules" driver that solely emits
+  {"BS814":{"KEYS":"XX"}} JSON messages to be used in a rule or by an MQTT broker. "XX" stands
+  for the hexadecimal (big endian) representation of a bitmap of keys currently touched, where
+  e.g. "00" means "no key touched" while "03" means "keys 1 and 2 touched simultaneously".
+  Selecting "BS814 CLK" on one GPIO and "BS814 DAT" on another GPIO will awake the driver.
+  This driver can only be selected once.
+
+  NOTE: Key hex output is sent in 2 digits although it would fit in one.
+        The reason is a provision for BS818A-2 8-key controllers.
+\*********************************************************************************************/
+
+#define XDRV_51                   51
+
+#define BS814_KEYS_MAX            4         // no. of keys supported
+
+// Timing in microseconds
+#define BS814_BIT                 40        // serial bit time
+#define BS814_PULSE               20        // clock pulse width
+#define BS814_ERR_WAIT            6000      // minimum time before retry
+#define BS814_FREQ                25000     // max bitrate
+
+struct BS814 {
+  uint8_t keys            = 0;              // bitmap of active & old keys: [ooookkkk]
+  bool present            = false;          // driver initialized
+#ifdef DEBUG_BS814_DRIVER
+  uint16_t e_level        = 0;              // level disagree error
+  uint16_t e_cksum        = 0;              // checksum errror
+  uint16_t e_stp          = 0;              // stop bit error
+  bool valid              = false;          // did we ever receive valid data?
+#endif  // DEBUG_BS814_DRIVER
+} Bs814;
+
+const char Bs814_json[] PROGMEM = "\"BS814\":{\"KEYS\":\"";
+
+extern "C" {
+  void os_delay_us(uint32_t);
+}
+
+void bs814_init(void) {                     // Initialize
+  if (!PinUsed(GPIO_BS814_CLK) || !PinUsed(GPIO_BS814_DAT)) { return; }
+  pinMode(Pin(GPIO_BS814_DAT), INPUT_PULLUP);
+  pinMode(Pin(GPIO_BS814_CLK), OUTPUT);
+  Bs814.present = true;
+  bs814_read();
+}
+
+void bs814_read(void) {                     // Poll touch keys
+  uint8_t frame    = 0;
+  uint8_t checksum = 0;
+  uint8_t bitp;
+  bool bitval;
+  
+  // generate clock signal & sample frame
+  for (bitp = 0; bitp < 2 * BS814_KEYS_MAX; ++bitp) {
+    digitalWrite(Pin(GPIO_BS814_CLK), LOW);
+    os_delay_us(BS814_PULSE);
+    digitalWrite(Pin(GPIO_BS814_CLK), HIGH);
+    bitval = digitalRead(Pin(GPIO_BS814_DAT));
+#ifdef DEBUG_BS814_DRIVER
+    if (bitval != digitalRead(Pin(GPIO_BS814_DAT))) {               // value consistent?
+      ++Bs814.e_level;
+    }
+#endif  // DEBUG_BS814_DRIVER
+    frame |= (bitval << bitp);
+    if (bitp < 2 * BS814_KEYS_MAX - 1) {                            // stop bit
+      if (bitp < BS814_KEYS_MAX) {
+        checksum += bitval;                                         // checksum key bits
+      }
+      os_delay_us(BS814_PULSE);
+    }
+  }
+  // validate frame
+  if (BS814_KEYS_MAX - checksum != ((frame >> 4) & 0x7)) {          // checksum error
+#ifdef DEBUG_BS814_DRIVER
+    ++Bs814.e_cksum; 
+    AddLog_P(LOG_LEVEL_DEBUG, PSTR("CKS=%02X CFR=%02X"), checksum, (frame >> 4) & 0x7);
+#endif  // DEBUG_BS814_DRIVER
+    return;
+  }
+  if ((frame & 0x80) == 0) {                                        // stop bit error
+#ifdef DEBUG_BS814_DRIVER
+    ++Bs814.e_stp;
+#endif  // DEBUG_BS814_DRIVER
+    return;
+  }
+  Bs814.keys = (Bs814.keys & 0xF0) | (~frame & 0xF);                // frame logic inverted
+#ifdef DEBUG_BS814_DRIVER
+  Bs814.valid = true;
+#endif  // DEBUG_BS814_DRIVER
+}
+
+void bs814_update(void) {                   // Usually called every 50 ms
+  bs814_read();
+  if ((Bs814.keys & 0xF) != (Bs814.keys >> 4)) {
+#ifdef DEBUG_BS814_DRIVER
+    AddLog_P(LOG_LEVEL_DEBUG, PSTR("BS814: KEY=%0X OLD=%0X LVL=%u CKS=%u STP=%u OK=%u CLK=%u DAT=%u"),
+             Bs814.keys & 0xF, Bs814.keys >> 4, Bs814.e_level, Bs814.e_cksum, Bs814.e_stp,
+             Bs814.valid, Pin(GPIO_BS814_CLK), Pin(GPIO_BS814_DAT));
+#endif  // DEBUG_BS814_DRIVER
+    bs814_publish();
+    Bs814.keys = (Bs814.keys << 4) | (Bs814.keys & 0xF);
+  }
+}
+
+void bs814_show() {
+  ResponseAppend_P(PSTR(",%s%02X\"}"), Bs814_json, Bs814.keys & 0xF);   // tele json
+}
+
+void bs814_publish(void) {
+  Response_P(PSTR("{%s%02X\"}}"), Bs814_json, Bs814.keys & 0xF);        // mqtt & rules
+  MqttPublishTeleSensor();
+}
+
+/*********************************************************************************************\
+ * Interface
+\*********************************************************************************************/
+
+bool Xdrv51(uint8_t function) {
+  bool result = false;
+
+  if (FUNC_INIT == function) {
+    // Initialize driver
+    bs814_init();
+  } else if (Bs814.present) {
+    switch (function) {
+      // timed callback functions
+      case FUNC_EVERY_50_MSECOND:
+        bs814_update();
+        break;
+      // Generate JSON telemetry string
+      case FUNC_JSON_APPEND:
+        bs814_show();
+        break;
+      }
+  }
+  // Return bool result
+  return result;
+}
+
+#endif  // USE_BS814A2