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Hello: Your first Embedded Program
Measure: A Remote Measurement System
Measure - Project File
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Appendix
Testing Measure
The MEASURE sample program is designed to accept
commands from the on-chip serial port. If you have actual target
hardware, you can use a terminal simulation to communicate with the
ARM CPU. If you do not have target hardware, you can use µVision3 to
simulate the hardware. You can also use the serial window in µVision3
to provide serial input.
Once the MEASURE program is build, you can test it. Use the
Start/Stop Debug Session command from the Debug menu to
start the µVision3 debugger.
Remote Measurement System Commands
The serial commands that MEASURE supports are listed in the following table. These commands are composed of ASCII text characters. All commands must be terminated with a carriage return. You can enter these commands in the Serial Window #1 during debugging.
| Command | Serial Text | Description |
|---|---|---|
| Clear | C | Clears the measurement record buffer. |
| Display | D | Displays the current time and input values. |
| Time | T hh:mm:ss | Sets the current time in 24-hour format. |
| Interval | I mm:ss.ttt | Sets the interval time for the measurement samples. The interval time must be between 0:00.001 (for 1ms) and 60:00.000 (for 60 minutes). |
| Start | S | Starts the measurement recording. After receiving the start command, MEASURE samples all data inputs at the specified interval. |
| Read | R [count] | Displays the recorded measurements. You may specify the number of most recent samples to display with the read command. If no count is specified, the read command transmits all recorded measurements. You can read measurements on the fly if the interval time is more than 1 second. Otherwise, the recording must be stopped. |
| Quit | Q | Quits the measurement recording. |
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