• Textboxes
–
Implemented Magnetic Flux Density (BOP) Textbox:
Displays the TMAG5328 B
OP
value based on the
DAC settings. If the Modification Method drop-down box has the "Manual B" option selected, this textbox
is also used to enter the desired B
OP
to change to.
–
Voltage Applied to TMAG5328 ADJ Pin Textbox:
Displays the DAC output voltage. If the Modification
Method drop-down box has the "Manual V" option selected, this textbox is also used to enter the desired
DAC output voltage to change to.
–
Equivalent Resistance to Apply on TMAG5328 ADJ Pin Textbox:
Displays the resistor that can be
applied to the ADJ pin to produce the same B
OP
produced by the currently set DAC output voltage. If the
Modification Method drop-down box has the "Manual R" option selected, this textbox is also used to enter
the desired equivalent resistance value to change to.
–
Status Textbox:
This displays the status associated with pressing different action buttons.
• Action Buttons
–
CHANGE VALUE button:
When you click this button, the DAC output voltage is changed according to the
selected option in the "
Modification Method"
Drop-Down Box.
–
STORE TO NVM button:
Pressing this button stores the current DAC output voltage to nonvolatile
memory. If the EVM is power cycled, the DAC will be automatically set to the last output voltage stored
in nonvolatile memory without requiring the microcontroller performing any reconfigurations steps on the
DAC. As a result, the B
OP
also would be retained after the power cycle.
–
RELOAD FROM NVM button:
Sets the current DAC output voltage to the DAC output voltage that is
stored in nonvolatile memory.
5.1.4 Direct EVM Serial Communication
If desired, the SCB can communicate directly with the EVM without the use of the GUI through the USB serial
(COM) port. Simply send the desired command string over the serial port and receive the results. This is useful
for interfacing the EVM with custom setups/scripts/GUIs. Note that the TMAG5328EVM has to be connected to
the SCB to receive any command responses from the SCB.
The following commands are supported:
• Results Read command format:
rreg 0
– This command reads the state of the TMAG5328 OUT pin. If the pin is asserted high (the LED is OFF),
the value returned is 1. If the pin is asserted low (the LED is ON), the value returned is 0.
–
is an example response to the command. In this response, the TMAG5328 OUT pin is at a
logic high since the returned value is 1 and not 0.
Figure 5-11. Example Result Read Command Response
• DAC Sweep command format:
dacweep
– This command initiates a DAC voltage sweep. This is the same command executed by the GUI whenever
you click the
CHANGE VALUE
button while the "Modification Method" drop-down box is set to the
"Voltage Sweep" option.
EVM Operation
SBAU376 – DECEMBER 2021
TMAG5328 Evaluation Module
17
Copyright © 2021 Texas Instruments Incorporated