support spi for sn74hc595

[angelnu]

What does this implement/fix?

Support using SPI for the sn74hc595. This is required when other SPI devices are in the same bus such as by the Shelly Pro 2PM.

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other

Related issue or feature (if applicable): NA

Pull request in esphome-docs with documentation (if applicable): esphome/esphome-docs#3341

Test Environment

• ESP32
• ESP32 IDF
• ESP8266
• RP2040

Example entry for config.yaml:

When using the SPI the following can be used:

# Example with SPI
spi:
  clk_pin: GPIO21
  mosi_pin: GPIO22
  miso_pin: GPIO23
sn74hc595:
  - id: sn74hc595_hub_2
    latch_pin: GPIO22
    oe_pin: GPIO32
    sr_count: 2

When not using the SPI, the same previous schema works:

sn74hc595:
  - id: sn74hc595_hub
    data_pin: GPIO21
    clock_pin: GPIO23
    latch_pin: GPIO22
    oe_pin: GPIO32
    sr_count: 2

Checklist:

• The code change is tested and works locally.
• Tests have been added to verify that the new code works (under tests/ folder).

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated in esphome-docs.

[angelnu]

@notsonominal Did this one also work gor you?

[ghost]

Works great both as SPI and non-SPI on Shelly pro and Shelly plus models I tested.

[jesserockz]

I just made some (untested) changes to the code to clean it up a bit and truly split spi vs gpio right from codegen.

Please make sure they work for you and let me know

[angelnu]

I can confirm it compiles for me. Nice rework.

@notsonominal could you please retest on your side? I do not have this device.

[ghost]

yeah, still works both as spi and no spi 👍

[ghost]

This might have been premature as i compiled and tested 228c258 while 92b618c was merged.
It works when checking out 2023.11.0-dev
but moving from spi to not spi (with no spi bus configured) i get this

Compiling .pioenvs/shelly-pro-1pm-30c6f781837c/src/esphome/components/socket/socket.o
*** [.pioenvs/shelly-pro-1pm-30c6f781837c/src/esphome/components/spi/spi.o] Source `src/esphome/components/spi/spi.cpp' not found, needed by target `.pioenvs/shelly-pro-1pm-30c6f781837c/src/esphome/components/spi/spi.o'.
========================================= [FAILED] Took 12.09 seconds =========================================

clean and run gets past it though, and both still works

[angelnu]

I can take a look at the warning this evening. Can you dm your config (just in case)?

[angelnu]

@notsonominal - I am not able to reproduce the warning you are getting. So could you open an issue and attach your configuration? It might be depending on the framework/device...