Chapter 4 Programming
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National Instruments Corporation 4-25 PCI E Series RLPM
10. Call AI_Arming to arm the analog input counter.
AI_Command_1_Register
AI SC arm = 1;
AI SI arm = 1;
AI SI2 arm = 1;
AI DIV arm = 1;
11. Poll the AI FIFO not empty flag in the AI_Status_1_Register until not
empty and read the ADC FIFO data in the ADC_FIFO_Data_Register.
Do
{
If (AI FIFO not empty) then
read FIFO data;
if (count = 80)
reset count to 0;
} while (SC_TC flag in the AI_Status_1_Register is not set or the
AIFIFO not empty)
Example 7
Example 7 performs the same scanning as Example 2, but as a single wire
acquisition.
Acquire 5 scans. The scan list contains channels 5, 4, 1, and 0, respectively,
each at a gain of 1 and in RSE mode. The START and CONVERT signals
should be applied to PFI0. Use polled input to read the AI FIFO data.
1. Perform Analog Input Example 1 Step 1.
2. Perform Analog Input Example 1 Step 2 for each channel in the scan
list. Only channel 0 has Last channel set to 1.
3. Perform Analog Input Example 1 Steps 3 through 9.
4. 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 = 4;
AI_Command_1_Register
AI SC Load = 1;
Joint_Reset_Register
AI configuration start = 0;
AI configuration end = 1;
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