ST7701 display with TCA9554 expander and Spi3Wire

[dweber69]

I am trying to get a Waveshare ESP32-S3 Touch 4B display working and have been reading through the posts about this display in other setups and the use of port expanders. Unfortunately I am a bit lost how I can get this port expander working for the display SPI. The port expander is used as follows:

LCD_RST = EXIO7
LCD_CS = EXIO0
LCD_SDA = EXIO1
LCD_SCL = EXIO2

Can someone help me out here, I would really appreciate it.

I am trying it like below but I am already getting stuck at the expander setup as it says The expander device has not been set when I try to define the first Pin.

expander_bus = i2c.I2C.Bus(host=1, scl=48, sda=47)
expander_device = i2c.I2C.Device(expander_bus, tca9554.I2C_ADDR, tca9554.BITS)

tca9554.Pin.set_device(expander_device)

lcd_cs_pin = tca9554.Pin(tca9554.EXIO1, tca9554.Pin.OUT, value=0)
lcd_rst_pin = tca9554.Pin(tca9554.EXIO8, tca9554.Pin.OUT, value=0)
lcd_sda_pin = tca9554.Pin(tca9554.EXIO2, tca9554.Pin.OUT, value=0)
lcd_scl_pin = tca9554.Pin(tca9554.EXIO3, tca9554.Pin.OUT, value=0)

spi3wire = Spi3Wire(
sck=lcd_scl_pin,
miso=lcd_sda_pin,
cs=lcd_cs_pin,
cs_active_high=False,
)