Adding usb_iss to i2c module; i2c support only; Stable

adafruit_platformdetect/board.py

@@ -127,6 +127,8 @@ def id(self) -> Optional[str]:
             board_id = self._beaglebone_id()
         elif chip_id == chips.MCP2221:
             board_id = boards.MICROCHIP_MCP2221
+        elif chip_id == chips.USB_ISS:
+            board_id = boards.MICROCHIP_USB_ISS
         elif chip_id == chips.BINHO:
             board_id = boards.BINHO_NOVA
         elif chip_id == chips.LPC4330:
@@ -945,6 +947,7 @@ def lazily_generate_conditions():
             yield self.board.QTPY_U2IF
             yield self.board.QT2040_TRINKEY_U2IF
             yield self.board.KB2040_U2IF
+            yield self.board.MICROCHIP_USB_ISS
 
         return any(condition for condition in lazily_generate_conditions())
 
@@ -1010,6 +1013,11 @@ def microchip_mcp2221(self) -> bool:
         """Check whether the current board is a Microchip MCP2221."""
         return self.id == boards.MICROCHIP_MCP2221
 
+    @property
+    def microchip_usb_iss(self) -> bool:
+        """Check whether the current board is a Microchip USB_ISS."""
+        return self.id == boards.MICROCHIP_USB_ISS
+
     @property
     def pico_u2if(self) -> bool:
         """Check whether the current board is a RPi Pico w/ u2if."""

adafruit_platformdetect/chip.py

@@ -98,6 +98,11 @@
                     "BLINKA_MCP2221 environment variable "
                     + "set, but no MCP2221 device found"
                 )
+            if os.environ.get("BLINKA_USB_ISS"):
+                from usb_iss import UsbIss, defs
+
+                self._chip_id = chips.USB_ISS
+                return self._chip_id
             if os.environ.get("BLINKA_U2IF"):
                 import hid
 

adafruit_platformdetect/constants/boards.py

@@ -158,6 +158,7 @@
 LICHEE_RV = "LICHEE_RV"
 
 MICROCHIP_MCP2221 = "MICROCHIP_MCP2221"
+MICROCHIP_USB_ISS = "MICROCHIP_USB_ISS"
 
 # Linkspirte Pcduino based boards
 PCDUINO2 = "PCDUINO2"

adafruit_platformdetect/constants/chips.py

@@ -74,5 +74,6 @@
 RP2040_U2IF = "RP2040_U2IF"
 D1_RISCV = "D1_RISCV"
 ATOM_J4105 = "ATOM_J4105"
+USB_ISS = "USB_ISS"
 
 BCM_RANGE = {"BCM2708", "BCM2709", "BCM2711", "BCM2712", "BCM2835", "BCM2837"}