Struct Spi2Resources 

pub struct Spi2Resources<'a> {
    pub spi2: AnySpi<'a>,
    pub spi2_dma: AnySpiDmaChannel<'a>,
    pub sck: AnyPin<'a>,
    pub mosi: AnyPin<'a>,
    pub miso: AnyPin<'a>,
    pub display_cs: AnyPin<'a>,
    pub display_dc: AnyPin<'a>,
    pub display_rst: AnyPin<'a>,
    pub display_bl: AnyPin<'a>,
    pub card_cs: AnyPin<'a>,
}

SPI2 pins + units (Fire27): SCK=GPIO18, MOSI=GPIO23, MISO=GPIO19, display CS=GPIO14 / DC=GPIO27 / RST=GPIO33 / BL=GPIO32, card CS=GPIO4, PDMA SPI2 channel.

Fields

spi2: AnySpi<'a>

spi2_dma: AnySpiDmaChannel<'a>

sck: AnyPin<'a>

mosi: AnyPin<'a>

miso: AnyPin<'a>

display_cs: AnyPin<'a>

display_dc: AnyPin<'a>

display_rst: AnyPin<'a>

display_bl: AnyPin<'a>

card_cs: AnyPin<'a>

Implementations

impl Spi2Resources<'static>

pub async fn into_display_only( self, dma_rx_buf: DmaRxBuf, dma_tx_buf: DmaTxBuf, ) -> Result<DisplayBus, DisplayOnlyInitError>

Bring up the display only on a descriptor-backed SpiDmaBus, with no SD-card path. The DMA buffers are supplied by the app (TX sized to the display stripe; RX unused by a write-only panel). The panel is reset via its GPIO RST pin; the backlight (GPIO32) is driven high on success and returned in DisplayBus for the caller to keep alive.

impl Spi2Resources<'static>

pub fn into_parts( self, dma_rx_buf: DmaRxBuf, dma_tx_buf: DmaTxBuf, ) -> Result<(Spi2Parts, Output<'static>), ConfigError>

Build the DMA bus and the CS/DC/RST/BL outputs. The DMA buffers are supplied by the app — their sizing is application policy (SD block size for RX, display strip size for TX). Returns the card CS separately so the app can wrap it (e.g. a HIL “no SD card” kill-switch) before Spi2Parts::finish. The backlight starts LOW (no flicker during panel init); finish turns it on.