From 0d85786a399494394cb01e20e9bc8aee043d49ba Mon Sep 17 00:00:00 2001
From: Marnix Klooster <marnix.klooster@infor.com>
Date: Mon, 30 Dec 2024 11:48:18 +0100
Subject: [PATCH] STM32F3DISCOVERY: Working blinky

This enables the STM32F3DISCOVERY build of blinky,
which blinks all 8 LEDs simulateously.
---
 examples/stmicro/stm32/build.zig      |  5 +++--
 examples/stmicro/stm32/src/blinky.zig | 22 ++++++++++++++++++++++
 2 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/examples/stmicro/stm32/build.zig b/examples/stmicro/stm32/build.zig
index 1493be78..cb276870 100644
--- a/examples/stmicro/stm32/build.zig
+++ b/examples/stmicro/stm32/build.zig
@@ -10,14 +10,15 @@ pub fn build(b: *std.Build) void {
 
     const mz_dep = b.dependency("microzig", .{});
     const mb = MicroBuild.init(b, mz_dep) orelse return;
+    const stm32 = mb.ports.stm32;
 
     const available_examples = [_]Example{
-        .{ .target = mb.ports.stm32.chips.STM32F103C8, .name = "STM32F103C8", .file = "src/blinky.zig" },
+        .{ .target = stm32.chips.STM32F103C8, .name = "STM32F103C8", .file = "src/blinky.zig" },
+        .{ .target = stm32.boards.stm32f3discovery, .name = "stm32f3discovery", .file = "src/blinky.zig" },
         // TODO: stm32.pins.GlobalConfiguration is not available on those targets
         // .{ .target = stm32.chips.stm32f303vc, .name = "stm32f303vc", .file = "src/blinky.zig" },
         // .{ .target = stm32.chips.stm32f407vg, .name = "stm32f407vg", .file = "src/blinky.zig" },
         // .{ .target = stm32.chips.stm32f429zit6u, .name = "stm32f429zit6u", .file = "src/blinky.zig" },
-        // .{ .target = stm32.boards.stm32f3discovery, .name = "stm32f3discovery", .file = "src/blinky.zig" },
         // .{ .target = stm32.boards.stm32f4discovery, .name = "stm32f4discovery", .file = "src/blinky.zig" },
         // .{ .target = stm32.boards.stm3240geval, .name = "stm3240geval", .file = "src/blinky.zig" },
         // .{ .target = stm32.boards.stm32f429idiscovery, .name = "stm32f429idiscovery", .file = "src/blinky.zig" },
diff --git a/examples/stmicro/stm32/src/blinky.zig b/examples/stmicro/stm32/src/blinky.zig
index 8bf1938d..c9258c0e 100644
--- a/examples/stmicro/stm32/src/blinky.zig
+++ b/examples/stmicro/stm32/src/blinky.zig
@@ -20,6 +20,28 @@ pub fn main() !void {
                 pins.led,
             };
             break :res .{ pins, all_leds };
+        } else if (comptime microzig.config.board_name != null and std.mem.eql(u8, microzig.config.board_name.?, "STM32F3DISCOVERY")) {
+            const pins = (stm32.pins.GlobalConfiguration{ .GPIOE = .{
+                .PE8 = .{ .mode = .{ .output = .push_pull } },
+                .PE9 = .{ .mode = .{ .output = .push_pull } },
+                .PE10 = .{ .mode = .{ .output = .push_pull } },
+                .PE11 = .{ .mode = .{ .output = .push_pull } },
+                .PE12 = .{ .mode = .{ .output = .push_pull } },
+                .PE13 = .{ .mode = .{ .output = .push_pull } },
+                .PE14 = .{ .mode = .{ .output = .push_pull } },
+                .PE15 = .{ .mode = .{ .output = .push_pull } },
+            } }).apply();
+            const all_leds = .{
+                pins.PE8,
+                pins.PE9,
+                pins.PE10,
+                pins.PE11,
+                pins.PE12,
+                pins.PE13,
+                pins.PE14,
+                pins.PE15,
+            };
+            break :res .{ pins, all_leds };
         } else {
             @compileError("blinky is not (yet?) implemented for this target");
         }