National Instruments PCI E Series - Example 8; AI Configuration Start = 0; AI Configuration End = 1; the Function Ai_Scan_Start; Perform Analog Input Example 1 Step; The Function Ai_Scan_Start Selects the Scan Start Event

Chapter 4 Programming
© National Instruments Corporation 4-27 PCI E Series RLPM
Example 8
This example samples one channel on an AMUX-64T.
Use the factory default settings on the AMUX-64T, internal power,
single-board configuration, no temperature setting, and the shield
unconnected. Sample channel 3 on the AMUX-64T to acquire 100 samples
at a sample interval of 10 µs. Connect a voltage source to channel 3, and
compare the unscaled results to the applied voltage. Read the samples using
polled input.
1. Perform Analog Input Example 1 Step 1.
2. Perform Analog Input Example 1 Step 2 for channel 3.
3. Perform Analog Input Example 1 Steps 3 through 6.
4. Call the function
AI_Initialize_Configuration_Memory_Output to output one
pulse and access the first value in the configuration FIFO. This
function also configures the DIO circuitry for the AMUX-64T.
AI_Command_1_Register
AI convert pulse = 1;
DIO_Control_Register = 0x0003;
DIO_Output_Register = 0x0003;
DIO_Control_Register = 0x0803;
DIO_Control_Register = 0x0003;
5. Perform Analog Input Example 1 Steps 8 through 9.
6. Call the function
Number_of_Scans to load the number of scans.
Joint_Reset_Register
AI configuration start = 1;
AI_SC_Load_A_Registers (24 bits)
Number of posttrigger scans -1 = 99;
AI_Command_1_Register
AI SC Load = 1;
Joint_Reset_Register
AI configuration start = 0;
AI configuration end = 1;
7. The function
AI_Scan_Start selects the scan start event.
Joint_Reset_Register
AI configuration start = 1;
AI_START_STOP_Select_Register = 0x0060;