Add support for variable UDS RX offsets (#631)
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0ae2be95a1
commit
3bb0408ee6
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@ -486,13 +486,14 @@ class IsoTpMessage():
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FUNCTIONAL_ADDRS = [0x7DF, 0x18DB33F1]
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def get_rx_addr_for_tx_addr(tx_addr):
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def get_rx_addr_for_tx_addr(tx_addr, rx_offset=0x8):
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if tx_addr in FUNCTIONAL_ADDRS:
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return None
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if tx_addr < 0xFFF8:
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# standard 11 bit response addr (add 8)
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return tx_addr + 8
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# pseudo-standard 11 bit response addr (add 8) works for most manufacturers
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# allow override; some manufacturers use other offsets for non-OBD2 access
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return tx_addr + rx_offset
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if tx_addr > 0x10000000 and tx_addr < 0xFFFFFFFF:
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# standard 29 bit response addr (flip last two bytes)
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