Add command `Sensor80 1 <0..7>`

Add command ``Sensor80 1 <0..7>`` to control MFRC522 RFID antenna gain from 18dB (0) to 48dB (7) (#11073)

CHANGELOG.md

@@ -7,6 +7,7 @@ All notable changes to this project will be documented in this file.
 ### Added
 - Allow MCP230xx pinmode from output to input (#11104)
 - SML VBUS support (#11125)
+- Command ``Sensor80 1 <0..7>`` to control MFRC522 RFID antenna gain from 18dB (0) to 48dB (7) (#11073)
 
 ### Changed
 - TuyaMcu dimmer timeout (#11121)

RELEASENOTES.md

@@ -82,6 +82,7 @@ The attached binaries can also be downloaded from http://ota.tasmota.com/tasmota
 ### Added
 - Allow MCP230xx pinmode from output to input [#11104](https://github.com/arendst/Tasmota/issues/11104)
 - SML VBUS support [#11125](https://github.com/arendst/Tasmota/issues/11125)
+- Command ``Sensor80 1 <0..7>`` to control MFRC522 RFID antenna gain from 18dB (0) to 48dB (7) [#11073](https://github.com/arendst/Tasmota/issues/11073)
 
 ### Changed
 - TuyaMcu dimmer timeout [#11121](https://github.com/arendst/Tasmota/issues/11121)

tasmota/xsns_80_mfrc522.ino

@@ -126,6 +126,36 @@ void RC522Show(void) {
 }
 #endif  // USE_WEBSERVER
 
+/*********************************************************************************************\
+ * Supported commands for Sensor80:
+ *
+ * Sensor80 1        - Show antenna gain
+ * Sensor80 1 <gain> - Set antenna gain 0..7 (default 4)
+\*********************************************************************************************/
+
+bool RC522Command(void) {
+  bool serviced = true;
+  char argument[XdrvMailbox.data_len];
+
+  for (uint32_t ca = 0; ca < XdrvMailbox.data_len; ca++) {
+    if ((' ' == XdrvMailbox.data[ca]) || ('=' == XdrvMailbox.data[ca])) { XdrvMailbox.data[ca] = ','; }
+  }
+
+  switch (XdrvMailbox.payload) {
+    case 1:  // Antenna gain
+      uint8_t gain;
+      if (strchr(XdrvMailbox.data, ',') != nullptr) {
+        gain = strtol(ArgV(argument, 2), nullptr, 10) & 0x7;
+        Mfrc522->PCD_SetAntennaGain(gain << 4);
+      }
+      gain = Mfrc522->PCD_GetAntennaGain() >> 4;  // 0..7
+      Response_P(PSTR("{\"Sensor80\":{\"Gain\":%d}}"), gain);
+      break;
+  }
+
+  return serviced;
+}
+
 /*********************************************************************************************\
  * Interface
 \*********************************************************************************************/
@@ -145,6 +175,11 @@ bool Xsns80(uint8_t function) {
           RC522ScanForTag();
         }
         break;
+      case FUNC_COMMAND_SENSOR:
+        if (XSNS_80 == XdrvMailbox.index) {
+          result = RC522Command();
+        }
+        break;
 #ifdef USE_WEBSERVER
       case FUNC_WEB_SENSOR:
         RC522Show();