VXi VM4016 Manual Do Utilizador

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VM4016 Programming 

45 

 
  ViPInt16 

first_latched_reg 

- This parameter returns the first input channel which crosses the 
programmed threshold voltage. 

 
            ViPInt16 raw_data 

- This returns the 16 bit value that represents the current 
unconditioned [raw]  state of the inputs. 

 
  ViPInt16 

conditioned_data 

- This returns the 16 bit value that represents the current 
conditioned state of the inputs. 

 

Return Values: 

Returns VI_SUCCESS if successful, else returns error 
value. 

 

Description 

This is an application function that shows how the 
user can use core functions to enable/disable the 
specified channels for interrupt generation and 
configure the specified channels’ various parameters 
such as offset, polarity and voltage-range.  It 
returns the value of the First Latched register which 
records the first input channel to cross its threshold 
and queries the current state of the inputs.  Note 
that this function resets the module to its default 
state. 

 
***************************************************************************/ 
ViStatus_VI_FUNC vtvm4016_setup_and_read_data(ViSession instr_hndl, 

ViInt16 channel_list[],ViInt16 num_of_channels,ViReal32 
offset[],ViInt16 polarity[],ViInt16 voltage_range[], 

                  ViPInt16 first_latched_reg,ViPInt16 raw_data, 
                  ViPInt16 conditioned_data) 
 
{ 
 

 

/* Variable used to store return status of the function */ 
 

ViStatus status = VI_NULL; 

 
/* Reset to the default state */ 

status = vtvm4016_reset(instr_hndl); 

 

 

if (status < VI_SUCCESS)  

return status; 

 
/* Function to enable the selected channels to cause interrupt */ 
 

status = vtvm4016_enable_disable_channels (instr_hndl, 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

vtvm4016_ENABLE_CHANNEL, channel_list, num_of_channels); 

 

 

if (status < VI_SUCCESS) 

 return 

vtvm4016_ERROR_MASK_OR_UNMASK_CHANNELS;