Multiple SPI device support

[saawsm]

It seems multiple SPI devices on the same bus aren't supported, as the bus is acquired without a way of releasing it.

hagl_esp_mipi/src/mipi_display.c

Line 283 in 4630e89

spi_device_acquire_bus(*spi, portMAX_DELAY);

mipi_display_close() has the corresponding release function, but isn't usable since the spi_device_handle is static.

Is this something that is planned, or is it already supported, and I'm missing something?

[dizcza]

@saawsm I see you've been trying to work around the multiple SPI bus issue in your fork. Have you solved it?

[saawsm]

@dizcza Yeah, I ended up adding a MIPI_DISPLAY_EXCLUSIVE_BUS option that, if false, will release the bus after each display flush.

saawsm@cdc5bd4
saawsm/hagl@eb5b48e