Svccom3Sethandshake() - VeriFone MX800 series Programmer's Manual

svcCom3SetHandshake()

The svcCom3SetHandshake() function sets the handshake byte to the value
indicated.
Return Values
This function returns 0 upon success and a negative value if unsuccessful. The
value of the handshake control byte can be read using the
svcCom3ReqExtStatus() function.
Each bit of the handshake value indicates a specific state defined as follows:
Where:
Table 18
Bit Mnemonic Description
RE Receive enable
b7
0
1
HW Handshake wait
b6
0
1
AO Auxiliary Out (N/A)
b5
0
1
CO Control Out
b4
0
1
RO Ready Out (N/A)
b3
0
1
* Reserved
b2
* Reserved
b1
* Reserved
b0
Receive disabled
Receive enabled
Transmit unconditionally
Transmit waits on Handshake
Aux Out is in Idle state
Aux Out is in Asserted state
Control Out is in Idle state (RTS)
Control Out is in Asserted state (RTS)
Ready Out is in Idle state
Ready Out is in Asserted state
M
S
ERVICE
svcCom3SetHandshake()
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800 S P
ERIES ROGRAMMERS
F
UNCTIONS
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G
UIDE