fix: use HM42 vendor image upload session

tests/test_commands.py

@@ -7,10 +7,11 @@ from ppclock import commands as C
 
 
 class FakeTransport:
-    def __init__(self, id_response="DEVICE12345678"):
+    def __init__(self, id_response="DEVICE12345678", firmware_revision=None):
         self.epd_writes = []
         self.rxtx_writes = []
         self.id_response = id_response
+        self.firmware_revision = firmware_revision
         self.delays = []
 
     async def write_epd(self, data, response=True):
@@ -80,6 +81,23 @@ class TestUploadImage:
         assert t.epd_writes[-1] == bytes([0xAA])
         assert t.epd_writes[0][0] == 0x04
 
+    @pytest.mark.asyncio
+    async def test_hm42_uses_vendor_epd_session(self):
+        t = FakeTransport(firmware_revision="HM42_AIO_V1.0.9")
+        await C.upload_image(
+            t, bytes(15000), bytes(15000), small=False, slot=1
+        )
+        assert t.rxtx_writes == [bytes.fromhex("EA01"), bytes.fromhex("E2")]
+        assert t.epd_writes[:3] == [
+            bytes.fromhex("8001"),
+            bytes.fromhex("0000"),
+            bytes.fromhex("020000"),
+        ]
+        assert t.epd_writes[3][:4] == bytes.fromhex("03FF0000")
+        assert t.epd_writes[66][:4] == bytes.fromhex("03000000")
+        assert t.epd_writes[-1] == bytes.fromhex("0101")
+        assert len(t.epd_writes) == 3 + 63 + 63 + 1
+
 
 class TestOtherCommands:
     @pytest.mark.asyncio