Cutipy Test

EMAC has provided a simple test script that can be run on a CutiPy to verify function.

Tools Required

• Desktop PC
• USB to mini-USB cable
• Micro SD Card (optional)
• Serial to USB converter (for testing RS232/422/485 combo port)
• DB9 Loopback (for testing DB9 serial port)
• Oscilloscope (for testing High Drive Outputs

Running the Test

1. To begin testing the CutiPy, simply connect it via Mini-USB to USB to your computer and open a serial port monitoring program such as Minicom on linux or PuTTY on Windows.

2. Once you're able to communicate with Micropython's REPL, start the test be entering:

import test

3. You should see a menu come up:

1: Battery Voltage Test
2: Battery Charger Test
3: RTC Set Test
4: SD Card Test
5: Buttons Test
6: LCD Test

Select any of these tests by typing the number of the test and pressing Enter

Tests

1. Battery Voltage Test The Battery Voltage test will print out the voltage the CutiPy is reading at the battery.

2. Battery Charger Test The Battery Charger Test will print out whether or not it detects the battery charger as being connected.

3. RTC Set Test The RTC Set Test will set the allow you to set the time in the RTC and will then read it back. If the time that was read back matches the time you input, the RTC is working.

4. SD Card Test For this test, you'll need an SD card inserted into the CutiPy's SD card slot. Note that the SD card will be written to. This test will write a file to the SD card and attempt to read it back. If it succeeds, the test will print that it passed.

5. Buttons Test When you select this option, the buttons on the back of the board will become declared. Each button will simply print out a message when pressed.

6. LCD Test When this test is selected, the LCD should turn on and the message "Hello World" should be displayed.

7. High Drive Outputs Test For this test, you'll need an oscilloscope or similar device to be able to detect the pins toggling. Once you select this test, the script will toggle the first High Drive Output pin, which is pin 34 on the HDR1 header. From there, the script will prompt you:

Press 'y' to continue, any other key to exit loop

Each time you press 'y', the script will cycle through the the 8 high drive outputs on the HDR1 header in the following order: 34 -> 33 -> 36 _. 35 -> 38 -> 37 -> 40 -> 39 -> repeat