34 lines
857 B
Plaintext
34 lines
857 B
Plaintext
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Modbus Gernal:
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Modbus RTU/ASCII:
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- Parity checking should be used for the characters when received. This
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is not strictly necessary because we use CRC or LRC but it is recommended
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in the standard
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Difficulty: easy
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Priority: low
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Modbus TCP:
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- vMBTCPPortEnable( ) should be called by the protocol stack to enable
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processing of input connections. This function must be called by
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the protocol stack and therefore must be added to the TCP porting layer.
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Difficulty: medium
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Priority: high
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- MCF5235TCP port uses an outdated version of the FreeRTOS/lwIP porting
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layer. They should be merged with the STR71X porting layer.
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Modbus Functions:
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- If not initialized the Get Slave ID function must also return the
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run indicator byte in the result and maybe a dummy slave id.
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Difficulty: easy
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Priority: medium
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