Texas Instruments ADS1131REF, Руководство пользователя

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USB-SERIAL
INTERFACE
POWER
SUPPLY
LOAD CELL
CONNECTORS
INPUT
FILTERING
MSP430F449
USB CONNECTOR
LCD SWITCHES
ADS1x31
+5V
+3.3V
CH1
SPI
GPIO
UART
Hardware
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5.2.4 S — Start Streaming
When S is issued, the ADS1x31REF begins printing raw output codes from the installed ADS device in
hexadecimal format, separated by new lines. The device iterates continuously until a character is received
from the serial port.
S is used primarily by the EVM software for data collection.
5.2.5 D — Collect One Sample
Issuing the D command causes the ADS1x31REF to report the latest collected sample from the installed
ADS device. The sample is displayed in raw hexadecimal.
5.2.6 C — Set Channel
This command has no effect on the installed ADS device because there is only one channel.
• C0 — set to channel 0
• C — (with no arguments) prints the current channel, always CHAN=0
5.2.7 Q — Query Parameters
Q causes the ADS1x31REF to issue a coded string summarizing the current settings. The format of the
string is:
P0R[F,S]OIC0
followed by a carriage-return and linefeed.
6 Hardware
A block diagram of the ADS1x31REF is shown in Figure 8 . The schematic and layout drawings are given
in Appendix A .
Figure 8. ADS1x31REF Hardware Block Diagram
20 ADS1131REF and ADS1231REF SBAU175A – July 2010 – Revised August 2011
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