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spi: different ack dummy bytes for debugging (#1382)

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different ack vals

Co-authored-by: Comma Device <device@comma.ai>
This commit is contained in:
Adeeb Shihadeh
2023-05-01 19:31:13 -07:00
committed by GitHub
parent dbe941004a
commit a5718ce5dd
1 changed files with 4 additions and 4 deletions
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8
python/spi.py
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@@ -98,12 +98,12 @@ class PandaSpiHandle(BaseHandle):
cksum ^= b
return cksum
def _wait_for_ack(self, spi, ack_val: int, timeout: int) -> None:
def _wait_for_ack(self, spi, ack_val: int, timeout: int, tx: int) -> None:
timeout_s = max(MIN_ACK_TIMEOUT_MS, timeout) * 1e-3
start = time.monotonic()
while (timeout == 0) or ((time.monotonic() - start) < timeout_s):
dat = spi.xfer2(b"\x12")[0]
dat = spi.xfer2([tx, ])[0]
if dat == NACK:
raise PandaSpiNackResponse
elif dat == ack_val:
@@ -125,7 +125,7 @@ class PandaSpiHandle(BaseHandle):
spi.xfer2(packet)
logging.debug("- waiting for header ACK")
self._wait_for_ack(spi, HACK, timeout)
self._wait_for_ack(spi, HACK, timeout, 0x11)
# send data
logging.debug("- sending data")
@@ -133,7 +133,7 @@ class PandaSpiHandle(BaseHandle):
spi.xfer2(packet)
logging.debug("- waiting for data ACK")
self._wait_for_ack(spi, DACK, timeout)
self._wait_for_ack(spi, DACK, timeout, 0x13)
# get response length, then response
response_len_bytes = bytes(spi.xfer2(b"\x00" * 2))