From 0e06bd3eb921b984f3e258659a68259772265967 Mon Sep 17 00:00:00 2001
From: Brian Cully <bjc@kublai.com>
Date: Tue, 6 Dec 2022 22:40:04 -0500
Subject: hid: add mouse buttons

---
 src/bin/luchie.rs | 40 ++++++++++++++++++++++++++++++++++++++--
 1 file changed, 38 insertions(+), 2 deletions(-)

diff --git a/src/bin/luchie.rs b/src/bin/luchie.rs
index bbe06d4..4195746 100755
--- a/src/bin/luchie.rs
+++ b/src/bin/luchie.rs
@@ -105,6 +105,15 @@ fn main() -> ! {
     logln!("⏲️ init timer");
     let mut sys_timer = SysTimer::new(cp.SYST, clocks.sysclk().to_MHz());
 
+    logln!("🎹 init buttons");
+    // fusion mouse button labels
+    let mut gpiob = dp.GPIOB.split();
+    let left_button = gpiob.pb9.into_pull_up_input(&mut gpiob.crh);
+    let middle_button = gpiob.pb8.into_pull_up_input(&mut gpiob.crh);
+    let forward_button = gpiob.pb7.into_pull_up_input(&mut gpiob.crl);
+    let back_button = gpiob.pb6.into_pull_up_input(&mut gpiob.crl);
+    let dpi_button = gpiob.pb5.into_pull_up_input(&mut gpiob.crl);
+
     // cirque spi connections to spi1:
     //
     // pb0 - dr
@@ -166,8 +175,12 @@ fn main() -> ! {
         .device_class(USB_CLASS_CDC)
         .build();
 
+    while usb_dev.state() != UsbDeviceState::Configured {
+        usb_dev.poll(&mut [&mut serial, &mut mouse]);
+    }
+
+
     logln!("💡 init led");
-    let mut gpiob = dp.GPIOB.split();
     let mut led = gpiob.pb2.into_push_pull_output(&mut gpiob.crl);
     led.set_low();
 
@@ -175,6 +188,7 @@ fn main() -> ! {
 
     let mut abs_to_rel = AbsToRel::new();
     let mut trackball = TrackBall::new(1);
+    let mut last_buttons = 0;
     loop {
         let elapsed = sys_timer.update();
 
@@ -210,6 +224,27 @@ fn main() -> ! {
             _ => {}
         }
 
+        if left_button.is_low() {
+            logln!("lb");
+            mouse_report.buttons |= 1;
+        }
+        if middle_button.is_low() {
+            logln!("mb");
+            mouse_report.buttons |= 2;
+        }
+        if forward_button.is_low() {
+            logln!("fb");
+            mouse_report.buttons |= 4;
+        }
+        if back_button.is_low() {
+            logln!("bb");
+            mouse_report.buttons |= 8;
+        }
+        if dpi_button.is_low() {
+            logln!("db");
+            mouse_report.buttons |= 16;
+        }
+
         let rel_p = cirque
             .poll(&mut spi)
             .ok()
@@ -222,7 +257,7 @@ fn main() -> ! {
             logln!("rel_p: {:?}", p);
         }
         let p = trackball.update(rel_p, elapsed);
-        if p.0 != 0 || p.1 != 0 {
+        if p.0 != 0 || p.1 != 0 || mouse_report.buttons ^ last_buttons != 0 {
             mouse_report.x = p.0;
             mouse_report.y = p.1;
             logln!("p: {:?}", p);
@@ -234,6 +269,7 @@ fn main() -> ! {
                 _ => {}
             }
         }
+        last_buttons = mouse_report.buttons;
     }
 }
 
-- 
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