Texas Instruments PGA450Q1EVM-S, Руководство пользователя

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Setup and Operation
7 SLDU019B – December 2015 – Revised March 2016
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PGA450Q1EVM-S User's Guide and TIDA-00151 UART Demo Instructional
2.2.3 Testing the UART Connection With the TI GER Board
Use the steps that follow to test the UART connection with the TI GER board.
Step 1. If the user has not disconnected the system power, ensure that the MCU is activated again
by clicking the
ON (MicroActive) on the ESFR tab.
Step 2. In the top-right of the PGA450Q1EVM GUI, click the Direct TI GER Control button. This
button does not contain text; it is just an image (see the red circle in Figure 4 ).
Figure 4. Direct TI GER Control Button
Step 3. Under the GPIO tab, clicking the IO-8 = IN and IO-9 = IN buttons to ensure that IO-8 and IO-
9 are set as IN HIGH (see Figure 5 ).
Figure 5. GPIO Tab
Step 4. Connect the UART pins of the sensor to the UART pins of the TI GER board (see Figure 3 )
• Pin 10 (TxD) on the TI GER board goes to RXD on the Sensor.
• Pin 20 (RxD) on the TI GER board goes to TXD on the Sensor.
Step 5. On the UART tab, under the UART CONTROL SETTING section, select SETUP #9.
Step 6. In the BAUD RATE box in the lower right corner of the GUI, enter 19200.
Step 7. On the UART TEST tab, Select SETUP #9
Step 8. Click the OPEN UART MODULE button.
Step 9. Click the CHANGE BAUD RATE button, which should display 19200 and 1-bit = 52.1
μ
s.
Step 10. Click the CHECK FOR ERRORS to ensure there no errors occurred. If an error occurred,
one of the boxes will be red, at which point the user must click the CLOSE MODULE
IMMEDIATELY and CLOSE UART MODULE buttons. Then repeat the setup, beginning at
Step 8 in Section 2.2.3 .
Step 11. Write the values shown in Figure 6 in the TX box. Each byte must be typed on a separate
row.
Figure 6. User Submitted Data Packet in TX Box and Valid RX Response