Add support for FTC532 8-button touch controller

Add support for FTC532 8-button touch controller by Peter Franck (#10222)

CHANGELOG.md

@@ -9,6 +9,7 @@ All notable changes to this project will be documented in this file.
 - Support for P9813 RGB Led MOSFET controller (#10104)
 - Support for GPIO option selection
 - Gpio ``Option_a1`` enabling PWM2 high impedance if powered off as used by Wyze bulbs (#10196)
+- Support for FTC532 8-button touch controller by Peter Franck (#10222)
 
 ### Fixed
 - Redesign syslog and mqttlog using log buffer (#10164)

RELEASENOTES.md

@@ -62,6 +62,7 @@ The attached binaries can also be downloaded from http://ota.tasmota.com/tasmota
 - Support for P9813 RGB Led MOSFET controller [#10104](https://github.com/arendst/Tasmota/issues/10104)
 - Support for GPIO option selection
 - Gpio ``Option_a1`` enabling PWM2 high impedance if powered off as used by Wyze bulbs [#10196](https://github.com/arendst/Tasmota/issues/10196)
+- Support for FTC532 8-button touch controller by Peter Franck [#10222](https://github.com/arendst/Tasmota/issues/10222)
 
 ### Fixed
 - Redesign syslog and mqttlog using log buffer [#10164](https://github.com/arendst/Tasmota/issues/10152)

tasmota/language/bg_BG.h

@@ -639,6 +639,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/cs_CZ.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/de_DE.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/el_GR.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/en_GB.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532"
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/es_ES.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/fr_FR.h

@@ -636,6 +636,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RF TX"
 #define D_SENSOR_RFRECV        "RF RX"

tasmota/language/he_HE.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/hu_HU.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/it_IT.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 - STB"
 #define D_SENSOR_HX711_SCK     "HX711 - SCK"
 #define D_SENSOR_HX711_DAT     "HX711 - DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RF - TX"
 #define D_SENSOR_RFRECV        "RF - RX"

tasmota/language/ko_KO.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/nl_NL.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/pl_PL.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/pt_BR.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/pt_PT.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/ro_RO.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/ru_RU.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/sk_SK.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/sv_SE.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/tr_TR.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/uk_UA.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFRecv"

tasmota/language/vi_VN.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/zh_CN.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/language/zh_TW.h

@@ -640,6 +640,7 @@
 #define D_SENSOR_TM1638_STB    "TM16 STB"
 #define D_SENSOR_HX711_SCK     "HX711 SCK"
 #define D_SENSOR_HX711_DAT     "HX711 DAT"
+#define D_SENSOR_FTC532        "FTC532""
 #define D_SENSOR_TX2X_TX       "TX2x"
 #define D_SENSOR_RFSEND        "RFSend"
 #define D_SENSOR_RFRECV        "RFrecv"

tasmota/my_user_config.h

@@ -752,6 +752,8 @@
 
 //#define USE_WINDMETER                            // Add support for analog anemometer (+2k2 code)
 
+//#define USE_FTC532                               // Add support for FTC532 8-button touch controller (+0k6 code)
+
 //#define USE_RC_SWITCH                            // Add support for RF transceiver using library RcSwitch (+2k7 code, 460 iram)
 
 //#define USE_RF_SENSOR                            // Add support for RF sensor receiver (434MHz or 868MHz) (+0k8 code)

tasmota/support_features.ino

@@ -668,7 +668,9 @@ void ResponseAppendFeatures(void)
 #ifdef USE_RC522
     feature7 |= 0x00002000;  // xsns_80_mfrc522.ino
 #endif
-//    feature7 |= 0x00004000;
+#ifdef USE_FTC532
+    feature7 |= 0x00004000;  // xdrv_47_ftc532.ino
+#endif
 //    feature7 |= 0x00008000;
 
 //    feature7 |= 0x00010000;

tasmota/tasmota_template.h

@@ -131,6 +131,7 @@ enum UserSelectablePins {
   GPIO_RC522_RST,                      // RC522 reset
   GPIO_P9813_CLK, GPIO_P9813_DAT,      // P9813 Clock and Data
   GPIO_OPTION_A,                       // Specific device options to be served in code
+  GPIO_FTC532,                         // FTC532 touch ctrlr serial input
   GPIO_SENSOR_END };
 
 enum ProgramSelectablePins {
@@ -282,6 +283,7 @@ const char kSensorNames[] PROGMEM =
   D_SENSOR_RC522_RST "|"
   D_SENSOR_P9813_CLK "|" D_SENSOR_P9813_DAT "|"
   D_SENSOR_OPTION "_a|"
+  D_SENSOR_FTC532
   ;
 
 const char kSensorNamesFixed[] PROGMEM =
@@ -325,6 +327,9 @@ const uint16_t kGpioNiceList[] PROGMEM = {
   AGPIO(GPIO_LEDLNK_INV),               // Inverted link led
   AGPIO(GPIO_OUTPUT_HI),                // Fixed output high
   AGPIO(GPIO_OUTPUT_LO),                // Fixed output low
+#ifdef USE_FTC532
+  AGPIO(GPIO_FTC532),                   // FTC532 touch input
+#endif
 
 /*-------------------------------------------------------------------------------------------*\
  * Protocol specifics

tasmota/xdrv_47_ftc532.ino

@@ -0,0 +1,174 @@
+/*
+  xdrv_47_ftc532.ino - FTC532 touch buttons support for Tasmota
+
+  Copyright (C) 2020 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_FTC532
+/*********************************************************************************************\
+  THE PLAN [tm]:                    OUTCOME:
+  ==============                    ========
+  appear in a dropdown              (D_SENSOR_FTC532 "FTC532")
+  select pin                        (GPIO_FTC532)
+  attach interrupt to pin           DONE
+  ISR updating all 8 inputs         DONE
+  de-bouncing for 50 ms             NOT REQUIRED
+  change report every 250 ms        REPORTS EVERY 50MS
+  Webserver display "00001001"      DONE & REMOVED
+  MQTT message                      DONE
+  Rules hook                        DONE
+  detach interrupt before restart   POINTLESS
+
+  THE PROTOCOL [tm]:
+  ==================
+  LEAD-IN = 3015 µs HIGH, 755 µs LOW
+  S = 377 µs HIGH,  377 µs LOW
+  L = 377 µs HIGH, 1130 µs LOW
+
+           GROUP1   GROUP2
+  ---------------------------
+  ALL OFF: SSSSLLLL SSSSLLLL
+   1 ON  : LSSSSLLL SSSSLLLL
+   2 ON  : SLSSLSLL SSSSLLLL
+   3 ON  : SSLSLLSL SSSSLLLL
+   8 ON  : SSSSLLLL SSSLLLLS
+  123 ON : LLLSSSSL SSSSLLLL
+
+  Timing of an ALL OFF frame in clock cycles T=377µs, triggering on rising edge:
+  IDLE-2222444422224444-IDLE
+\*********************************************************************************************/
+
+#define XDRV_47                   47
+
+#define FTC532_KEYS_MAX           8
+
+#define FTC532_STATE_WAITING      0x01
+#define FTC532_STATE_READING      0x02
+
+// Rising edge timing in microseconds
+#define FTC532_BIT                377
+#define FTC532_SHORT              (FTC532_BIT * 2)
+#define FTC532_LONG               (FTC532_BIT * 4)
+#define FTC532_IDLE               (FTC532_BIT * 10)
+#define FTC532_MAX                (FTC532_BIT * 58)
+
+struct FTC532 {
+  volatile uint32_t rxtime;             // ISR timer memory
+  volatile uint16_t errors;             // error counter
+  volatile uint16_t sample = 0xF0F0;    // buffer for bit-coded time samples
+  volatile uint16_t rxbit;              // ISR bit counter
+  uint16_t keys = 0;                    // bitmap of active keys
+  uint16_t old_keys = 0;                // previously active keys
+  volatile uint8_t state;               // ISR state
+  volatile uint8_t valid;               // did we ever receive valid data?
+  bool present = false;
+} Ftc532;
+
+const char ftc532_json[] PROGMEM = "\"FTC532\":{\"KEYS\":\"";
+
+void ICACHE_RAM_ATTR ftc532_ISR(void) {   // Hardware interrupt routine, triggers on rising edge
+  uint32_t time = micros();
+  uint32_t time_diff = time - Ftc532.rxtime;
+  Ftc532.rxtime = time;
+
+  if (Ftc532.state == FTC532_STATE_WAITING) {
+    if (time_diff > FTC532_LONG + FTC532_SHORT) {  // new frame
+      Ftc532.rxbit = 0;
+      Ftc532.state = FTC532_STATE_READING;
+    }
+    return;
+  }             // FTC532_STATE_READING starts here
+  if (time_diff > FTC532_LONG + FTC532_BIT) {
+    ++Ftc532.errors;                               // frame error
+    Ftc532.state = FTC532_STATE_WAITING;
+    return;
+  }
+  if (time_diff > FTC532_SHORT + FTC532_BIT) {
+    Ftc532.sample |= (1 << Ftc532.rxbit);          // LONG
+  } else {
+    Ftc532.sample &= ~(1 << Ftc532.rxbit);         // SHORT
+  }
+  ++Ftc532.rxbit;
+  if (Ftc532.rxbit == FTC532_KEYS_MAX * 2) {       // frame complete
+    Ftc532.rxbit = 0;
+    Ftc532.valid = 1;
+    Ftc532.state = FTC532_STATE_WAITING;
+  }
+}
+
+void ftc532_init(void) {                           // Initialize
+  if (!PinUsed(GPIO_FTC532)) { return; }
+
+  Ftc532.errors = 0;
+  Ftc532.valid = 0;
+  Ftc532.state = FTC532_STATE_WAITING;
+  Ftc532.rxtime = micros();
+  pinMode(Pin(GPIO_FTC532), INPUT_PULLUP);
+  attachInterrupt(Pin(GPIO_FTC532), ftc532_ISR, RISING);
+  Ftc532.present = true;
+}
+
+void ftc532_update(void) {                         // Usually called every 50 ms
+//    // WARNING: Reduce callback frequency if this code is enabled
+//  if ((Ftc532.sample & 0xF) != ((~Ftc532.sample >> 4) & 0xF) || ((Ftc532.sample >> 8) & 0xF) != ((~Ftc532.sample >> 12) & 0xF)) {
+//    AddLog_P(LOG_LEVEL_ERROR, PSTR("FTC: inverted sample does not match %x %x %x %x"),
+//             Ftc532.sample & 0xF, (~Ftc532.sample >> 4) & 0xF, (Ftc532.sample >> 8) & 0xF, (~Ftc532.sample >> 12) & 0xF);
+//  }
+  Ftc532.keys = (Ftc532.sample & 0xF) | ((Ftc532.sample >> 4) & 0xF0);
+  if (Ftc532.keys != Ftc532.old_keys) {
+//    AddLog_P(LOG_LEVEL_DEBUG, PSTR("FTC: SAM=%04X KEY=%02X OLD=%02X ERR=%u OK=%u TIME=%lu Pin=%u"),
+//             Ftc532.sample, Ftc532.keys, Ftc532.old_keys, Ftc532.errors, Ftc532.valid, Ftc532.rxtime, Pin(GPIO_FTC532));
+    ftc532_publish();
+    Ftc532.old_keys = Ftc532.keys;
+  }
+}
+
+void ftc532_show() {
+  ResponseAppend_P(PSTR(",%s%02X\"}"), ftc532_json, Ftc532.keys);  // Hex keys need JSON quotes
+}
+
+void ftc532_publish(void) {
+  Response_P(PSTR("{%s%02X\"}}"), ftc532_json, Ftc532.keys);       // Hex keys need JSON quotes
+  MqttPublishTeleSensor();
+}
+
+/*********************************************************************************************\
+ * Interface
+\*********************************************************************************************/
+
+bool Xdrv47(uint8_t function) {
+  bool result = false;
+
+  if (FUNC_INIT == function) {
+    // Initialize driver
+    ftc532_init();
+  } else if (Ftc532.present) {
+    switch (function) {
+      // timed callback functions
+      case FUNC_EVERY_50_MSECOND:
+        ftc532_update();
+        break;
+      // Generate JSON telemetry string
+      case FUNC_JSON_APPEND:
+        ftc532_show();
+        break;
+      }
+  }
+  // Return bool result
+  return result;
+}
+
+#endif  // USE_FTC532

tools/decode-status.py

@@ -239,7 +239,7 @@ a_features = [[
     "USE_EZOORP","USE_EZORTD","USE_EZOHUM","USE_EZOEC",
     "USE_EZOCO2","USE_EZOO2","USE_EZOPRS","USE_EZOFLO",
     "USE_EZODO","USE_EZORGB","USE_EZOPMP","USE_AS608",
-    "USE_SHELLY_DIMMER","USE_RC522","","",
+    "USE_SHELLY_DIMMER","USE_RC522","USE_FTC532","",
     "","","","",
     "","","","",
     "","","","",
@@ -271,7 +271,7 @@ else:
         obj = json.load(fp)
 
 def StartDecode():
-    print ("\n*** decode-status.py v20201130 by Theo Arends and Jacek Ziolkowski ***")
+    print ("\n*** decode-status.py v20201222 by Theo Arends and Jacek Ziolkowski ***")
 
 #    print("Decoding\n{}".format(obj))