Add HIL tests for all peripherals which are practical to test

[jessebraham]

For now, let's use the table from #809 (comment):

I've gathered a list of the esp-hal modules and how hard/easy I think it would be to test those (take it with a grain of salt as I may have misevaluated some). Also, some modules can't be tested, or it does not make sense:

• aes
  • DMA - AES DMA HIL Tests #1426
  • Non- DMA - Add HIL testing #1297 and Improve AES HIL tests #1423
• analog -
• assist_debug -
• clock -Clock monitor HIL test #1425
• delay - Add Delay HIL test #1415
• ecc - Add HIL test for ECC #1418
• gpio -
• hmac -
• i2c -
• i2s -
• lcd_cam -
• ledc -
• mcpwm -
• otg_fs -
• parl_io -
• pcnt - Add PCNT HIL test #1746
• rmt -
• rom - Add CRC and MD5 HIL tests #1417
• rsa -HIL RSA tests #1414
• rtc_cntl -
• sha - HIL SHA tests #1422
• spi
  • Half duplex -
  • Full duplex
  • DMA
    • Half duplex - Add SPI Half Duplex Read HIL test #1782
    • Full duplex - Add SPI Full Duplex DMA test #1443
• systimer -
• timer -
• trace -
• twai -
• uart
  • blocking
  • async
• usb_serial_jtag -

[MabezDev]

One reference for the peripherals is the list @SergioGasquez created here: #809 (comment)

[SergioGasquez]

I will be working on RSA

[SergioGasquez]

I will be working on CRC

[JurajSadel]

Working on usb-serial-jtag

[SergioGasquez]

Working on SHA

[SergioGasquez]

Working on clock monitoring

[JurajSadel]

I'm currently stuck with usb-serial-jtag, I will work on debug-assist next.

[SergioGasquez]

I will also try to add aes_dma and improve the current aes test to cover all the modes.

[Dominaezzz]

I want to write a HIL test for the LCD_CAM but there's not enough loopback pin connections. At the moment there's only two, any chance I could get two more (at least on the S3)?
The alternative is going through the GPIO matrix (which would be ideal I suppose, less faff to run the tests) but that'll need #1662 .

[SergioGasquez]

At the moment there's only two, any chance I could get two more (at least on the S3)?

How many connected pins would you need? Feel free to suggest any pins that you would like to get connected, see #1332 (comment) which might be helpful.

[Dominaezzz]

4 total pairs. A clock pin, a data pin, and two ctrl pins.

According to https://github.com/esp-rs/esp-hal/tree/main/hil-test:

• GPIO2 and GPIO4 are connected.
• GPIO5 and GPIO6 are connected.

I suppose a strategic choice for two more pairs would be:

• GPIO1 and GPIO21. (GPIO1 is the only (excluding strapping pins) pin with the RTC_I2C function).
• GPIO43 and GPIO45. (GPIO43 is U0TXD pin)

My strategy there was to connect a pin with a specific function to another pin with no functions.
This is an S3 only choice, as the LCD_CAM only exists there.

[SergioGasquez]

Awesome, I'll try to get those pins connected in the upcoming days. On the ESP32-S3, the following would be added:

• GPIO1 and GPIO21 are connected.
• GPIO43 and GPIO45 are connected.

[SergioGasquez]

@Dominaezzz, our S3 self-hosted runner already has the connections we discussed.