Split bin dir into separate daemon and check dirs

This lets us manage their increasingly disparate dependencies separately

daemon/src/display/wingtech.rs

@@ -0,0 +1,54 @@
+/// Display support for the Wingtech CT2MHS01 hotspot.
+///
+/// Tested on (from `/etc/wt_version`):
+///   WT_INNER_VERSION=SW_Q89323AA1_V057_M10_CRICKET_USR_MP
+///   WT_PRODUCTION_VERSION=CT2MHS01_0.04.55
+///   WT_HARDWARE_VERSION=89323_1_20
+use crate::config;
+use crate::display::DisplayState;
+use crate::display::generic_framebuffer::{self, Dimensions, GenericFramebuffer};
+
+use tokio::sync::mpsc::Receiver;
+use tokio::sync::oneshot;
+use tokio_util::task::TaskTracker;
+
+const FB_PATH: &str = "/dev/fb0";
+
+#[derive(Copy, Clone, Default)]
+struct Framebuffer;
+
+impl GenericFramebuffer for Framebuffer {
+    fn dimensions(&self) -> Dimensions {
+        Dimensions {
+            height: 128,
+            width: 160,
+        }
+    }
+
+    fn write_buffer(&mut self, buffer: &[(u8, u8, u8)]) {
+        let mut raw_buffer = Vec::new();
+        for (r, g, b) in buffer {
+            let mut rgb565: u16 = (*r as u16 & 0b11111000) << 8;
+            rgb565 |= (*g as u16 & 0b11111100) << 3;
+            rgb565 |= (*b as u16) >> 3;
+            raw_buffer.extend(rgb565.to_le_bytes());
+        }
+
+        std::fs::write(FB_PATH, &raw_buffer).unwrap();
+    }
+}
+
+pub fn update_ui(
+    task_tracker: &TaskTracker,
+    config: &config::Config,
+    ui_shutdown_rx: oneshot::Receiver<()>,
+    ui_update_rx: Receiver<DisplayState>,
+) {
+    generic_framebuffer::update_ui(
+        task_tracker,
+        config,
+        Framebuffer,
+        ui_shutdown_rx,
+        ui_update_rx,
+    )
+}