Function lcd_write

st7735s/src/lib.rs:140–154

Writes arbitrary data to the SPI bus. The input data is chunked to respect the maximum write size accepted by the SPI bus.

(spi_bus: &mut B, data: &[u8])

///
/// The input data is chunked to respect the maximum write size accepted by the SPI bus.
fn lcd_write<B: SpiBus>(spi_bus: &mut B, data: &[u8]) -> io::Result<()> {
    // TODO(jmmv): Do we really need to chunk the data ourselves, or can we try to write it
    // all to the bus and then expect the write to return partial results?
    for chunk in data.chunks(spi_bus.max_size()) {
        let mut i = 0;
        loop {
            let n = spi_bus.write(&chunk[i..])?;
            if n == chunk.len() - i {
                break;
            }
            i += n;
        }
    }
    Ok(())
}

/// LCD handler for the ST7735S console.
struct ST7735SLcd<P: Pins, B> {