Fix berry I2C driver message

lib/libesp32/berry_tasmota/src/embedded/i2c_driver.be

@@ -47,7 +47,7 @@ class I2C_Driver
       if self.name == nil  self.wire = nil end
 
       if self.wire
-        log("I2C:", self.name, "detected on bus", self.wire.bus, 2)
+        log(f"I2C: {self.name} found at 0x{self.addr:02x} on bus{self.wire.bus}", 2)
       end
     end
   end

tasmota/berry/drivers/pi4ioe5v6408_M5Stack_UnitC6L.be

@@ -0,0 +1,51 @@
+#################################################################################
+# Specialized driver for M5Stack UnitC6L Lora
+#
+# in preinit.be: load("/pi4ioe5v6408_M5Stack_UnitC6L.be")
+#################################################################################
+
+class PI4IOE5V6408_UnitC6L : I2C_Driver
+  def init(addr)
+    if (addr == nil) 
+      addr = 0x43
+    end
+    super(self, I2C_Driver).init("PI4IOE5V6408", addr)
+
+    if self.wire
+      var id = self.wire.read(self.addr, 0x01, 1)
+      if id == 0
+        self.wire = nil
+
+        log("I2C: PI4IOE5V6408 not detected", 3)
+
+        return                      # wrong device
+      end
+
+      # M5Unified src/utility/Power_Class.cpp reg_data_array_for_lorac6
+      #  PI4IO E0
+      #  P0 (UnitC6L + NessoN1:BTN1)
+      #  P1 (UnitC6L:NC / NessoN1:BTN2)
+      #  P2-P5 NC
+      #  P5 LNA Enable
+      #  P6 RF Switch
+      #  P7 LoRa Reset
+      # for LoraC6 internal IOEXP
+      self.write8(0x03, 0xE0)       # PI4IO_REG_IO_DIR
+      self.write8(0x05, 0x80)       # PI4IO_REG_OUT_SET
+      self.write8(0x07, 0x1C)       # PI4IO_REG_OUT_H_IM
+      self.write8(0x0D, 0xC3)       # PI4IO_REG_PULL_SEL
+      self.write8(0x0B, 0xC3)       # PI4IO_REG_PULL_EN
+      self.write8(0x09, 0x03)       # PI4IO_REG_IN_DEF_STA
+      self.write8(0x11, 0xFC)       # PI4IO_REG_INT_MASK
+
+      # Example code and docs
+      self.write_bit(0x05, 7, 0)    # drive RESET Low
+      tasmota.delay(100)            # the recommended delay is 100ms
+      self.write_bit(0x05, 7, 1)    # re-enable SX_NRST
+      self.write_bit(0x05, 6, 1)    # enable SX_ANT_SW
+      self.write_bit(0x05, 5, 1)    # enable SX_LNA_EN
+    end
+  end
+end
+
+var unitc6l = PI4IOE5V6408_UnitC6L()