VeriFone MX800 Series - Svccom3 Seteclevel()

SERVICE FUNCTIONS
svcCom3SetECLevel()
182 M
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800 SERIES PROGRAMMERS GUIDE
svcCom3SetECLevel()
The function svcCom3SetECLevel() function sets the ECR engineering change
level that is reported to the ECR in response to the Request EC command. This
value is logged by the ECR and may be used to invoke version specific drivers.
The legal values are 00-FF and the default is FF corresponding to an OEM
device.
Prototype
short svcCom3SetECLevel(int fd, char ec)
Parameters
Return Values
This function returns 0 upon success and a negative value if unsuccessful.
fd File descriptor returned when opening a serial port with ecrOpen().
ec A 1 byte value to set the ECR engineering change level.