Crate st7305_lcd 

Platform-independent no_std driver for the Sitronix ST7305 reflective LCD controller.

The driver talks 4-wire SPI through embedded_hal::spi::SpiDevice (chip select belongs to the device, not to the driver) and drives the DC and RST pins itself. It never configures the bus.

• blocking::St7305: blocking driver on embedded-hal.
• asynch::St7305 (feature async): the same API on embedded-hal-async.
• framebuffer (feature framebuffer): 1 bpp frame buffer in the GRAM layout of the panel with runtime Rotation and an embedded-graphics DrawTarget, and Window for partial updates (write_window).
• cmd: typed commands for write_command, and presets: ready-made initialization tables for init_with.

Both drivers can send a frame in two steps, begin_write_ram (the RAMWR command) and write_ram_data (the pixel bytes). With the async driver the transfer can then be overlapped with rendering of the next frame.

Where is St7305?

The driver type is not re-exported at the crate root, because the blocking and the async driver share its name. Import it from the module you need: st7305_lcd::blocking::St7305 or st7305_lcd::asynch::St7305.

Example

use st7305_lcd::{blocking::St7305, presets::WAVESHARE_RLCD_42};

// `spi` is an `embedded_hal::spi::SpiDevice`, `dc` and `rst` are
// `OutputPin`s, `delay` is a `DelayNs`.
let mut display = St7305::new(spi, dc, rst);
display.init_with(WAVESHARE_RLCD_42, &mut delay)?;
display.write_ram(&frame_bytes)?; // 15 000 bytes of GRAM data

Modules

asynchasync

Async driver on embedded-hal-async.

blocking

Blocking driver on embedded-hal.

cmd

Typed ST7305 commands, one module per group of registers.

framebufferframebuffer

1 bpp frame buffer in the native GRAM layout of the panel.

instr

Command opcode table.

presets

Initialization tables for init_with.

Enums

Error

Driver error. S is the SPI error type, P is the error type of the DC and RST pins.

InitStep

One step of an initialization table, see init_with of the drivers and presets.

PowerMode

Power mode of the panel, selected with set_power_mode.

Traits

WriteCommand

A command that can be sent with write_command: an opcode and its parameter bytes.