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App Notes

Software & Driver

 

5.3 - Counter

This command controls and reads the 32-bit counter.

Table 5.3-1.

Command  
Byte # Description
0 Bits 7-2: XXXXXX
  Bit 1: Strobe Enabled
  Bit 0: Reset Counter
1 XXXXXXXX
2 XXXXXXXX
3 XXXXXXXX
4 XXXXXXXX
5 01X1XX10 (Counter)
6 XXXXXXXX
7 XXXXXXXX
   
   
Response  
Byte # Description
0 01X1XX10 (Counter)
1 Bits for D15 though D8 State ( 0 = Low, 1 = High )
2 Bits for D7 though D0 State ( 0 = Low, 1 = High )
3 Bits 7-4 = IO3 through IO0 State
  Bits 3-0 = XXXX
4 Most Significant Byte of Counter
5 Bits 23-16 of Counter
6 Bits 15-8 of Counter
7 Least Significant Byte of Counter

LabJackPython Example

  
>>> import u12
>>> d = u12.U12(debug=True)
open called
Writing: [0x0, 0x0, 0x0, 0x0, 0x0, 0x57, 0x0, 0x0]
Received: [0x57, 0x0, 0x0, 0x0, 0xff, 0xff, 0x0, 0x0]
>>> d.rawCounter()
Writing: [0x0, 0x0, 0x0, 0x0, 0x0, 0x52, 0x0, 0x0]
Received: [0x52, 0x0, 0x0, 0x0, 0xbb, 0x10, 0x0, 0xef]
{
  'IO3toIO0States': 
    <BitField object: [ IO3 = Low (0), IO2 = Low (0), 
                        IO1 = Low (0), IO0 = Low (0) ] >, 
  'Counter': 3138388207, 
  'D7toD0States': 
    <BitField object: [ D7 = Low (0), D6 = Low (0), 
                        D5 = Low (0), D4 = Low (0), 
                        D3 = Low (0), D2 = Low (0), 
                        D1 = Low (0), D0 = Low (0) ] >, 
  'D15toD8States': 
    <BitField object: [ D15 = Low (0), D14 = Low (0), 
                        D13 = Low (0), D12 = Low (0), 
                        D11 = Low (0), D10 = Low (0), 
                        D9 = Low (0), D8 = Low (0) ] >}