lora-sx126x: Enable all IRQ Mask bits unconditionally.

Expands _IRQ_CRC_ERR fix in the parent commit by always enabling
all the Irq Mask bits that the driver may want to read back later,
i.e. also including the header error bit.

Signed-off-by: Angus Gratton <angus@redyak.com.au>

Author: projectgus

micropython/lora/lora-sx126x/lora/sx126x.py

@@ -227,15 +227,21 @@ def __init__(
         # can trigger the ISR and may not be reset by the driver, leaving DIO1
         # high.
         if dio1:
-            self._cmd(
-                ">BHHHH",
-                _CMD_CFG_DIO_IRQ,
-                (_IRQ_RX_DONE | _IRQ_TX_DONE | _IRQ_TIMEOUT | _IRQ_CRC_ERR),  # IRQ mask
-                (_IRQ_RX_DONE | _IRQ_TX_DONE | _IRQ_TIMEOUT),  # DIO1 mask
-                0x0,  # DIO2Mask, not used
-                0x0,  # DIO3Mask, not used
-            )
-            dio1.irq(self._radio_isr, Pin.IRQ_RISING)
+            dio1_mask = _IRQ_RX_DONE | _IRQ_TX_DONE | _IRQ_TIMEOUT
+        else:
+            dio1_mask = 0
+
+        self._cmd(
+            ">BHHHH",
+            _CMD_CFG_DIO_IRQ,
+            # The Irq Mask byte needs to be set so that _CMD_GET_IRQ_STATUS returns all
+            # relevant flags that driver might check
+            _IRQ_TX_DONE | _IRQ_DRIVER_RX_MASK,
+            dio1_mask,  # DIO1Mask
+            0x0,  # DIO2Mask, not used
+            0x0,  # DIO3Mask, not used
+        )
+        dio1.irq(self._radio_isr, Pin.IRQ_RISING)
 
         self._clear_irq()