Syntax

long PassThruSetProgrammingVoltage(unsigned long DeviceID, unsigned long PinNumber, unsigned long Voltage);

Description

Output a programmable voltage on the specified J1962 connector pin. Only one pin can have a specified voltage applied at a time. The only exception: it is permissible to program pin 15 for SHORT_TO_GROUND, and another pin to a voltage level.

When switching pins, the user application must disable the first voltage (VOLTAGE_OFF option) before enabling the second. The user application protect against applying any incorrect voltage levels. A current in excess of 200mA will damage CarDAQ; do not ground the FEPS line while energized, even briefly.

Parameters

DeviceID

Vehicle interface identifier.

PinNumber

The J1962 connector pin to which the PassThru device will apply the specified voltage.

Voltage

The voltage value (in millivolts) that will be applied to the specified pin. CarDAQ supports a programmed voltage range of 5000mV to 20000mV with a tolerance of 100 millivolts. The voltage change slope has a maximum settling time of 1 millisecond.

See Also

Example

unsigned long Flags = 0;
unsigned long ChannelID;
unsigned long DeviceID;
unsigned long PinNumber;

PassThruOpen(NULL, &DeviceID);

PinNumber = 15;
PassThruSetProgrammingVoltage(DeviceID, PinNumber, SHORT_TO_GROUND);