libs/FreeModbus_Slave-Master-RTT-STM32
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FreeModbus_Slave-Master-RTT-STM32
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1、【修改】FreeModbus主机读写寄存器数量大于256时，可能出现的Bug。感谢网友 @geffu 的反馈。 

Signed-off-by: armink <armink.ztl@gmail.com>
This commit is contained in:
armink 2014-09-19 10:31:54 +08:00
parent 7eed16b188
commit 9c33ea1b1e
3 changed files with 8 additions and 7 deletions
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11
.cproject
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@ -1,14 +1,12 @@
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@ -117,8 +118,8 @@
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2
FreeModbus/modbus/functions/mbfuncholding_m.c
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@ -308,7 +308,7 @@ eMBMasterFuncReadHoldingRegister( UCHAR * pucFrame, USHORT * usLen )
usRegAddress++;
usRegCount = ( USHORT )( ucMBFrame[MB_PDU_REQ_READ_REGCNT_OFF] << 8 );
usRegCount = ( USHORT )( ucMBFrame[MB_PDU_REQ_READ_REGCNT_OFF + 1] );
usRegCount |= ( USHORT )( ucMBFrame[MB_PDU_REQ_READ_REGCNT_OFF + 1] );
/* Check if the number of registers to read is valid. If not
* return Modbus illegal data value exception.

2
FreeModbus/modbus/functions/mbfuncinput_m.c
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@ -116,7 +116,7 @@ eMBMasterFuncReadInputRegister( UCHAR * pucFrame, USHORT * usLen )
usRegAddress++;
usRegCount = ( USHORT )( ucMBFrame[MB_PDU_REQ_READ_REGCNT_OFF] << 8 );
usRegCount = ( USHORT )( ucMBFrame[MB_PDU_REQ_READ_REGCNT_OFF + 1] );
usRegCount |= ( USHORT )( ucMBFrame[MB_PDU_REQ_READ_REGCNT_OFF + 1] );
/* Check if the number of registers to read is valid. If not
* return Modbus illegal data value exception.