start basic h7 support

examples/stmicro/stm32/build.zig

@@ -46,6 +46,8 @@ pub fn build(b: *std.Build) void {
         .{ .target = stm32.chips.STM32F103CB, .name = "STM32F1xx_timer_capture", .file = "src/stm32f1xx/timer_capture.zig" },
         .{ .target = stm32.chips.STM32F103CB, .name = "STM32F1xx_rtc", .file = "src/stm32f1xx/rtc.zig" },
         .{ .target = stm32.chips.STM32F103CB, .name = "STM32F1xx_EXTI", .file = "src/stm32f1xx/EXTI.zig" },
+
+        .{ .target = stm32.chips.STM32H723VG, .name = "STM32H723_rcc", .file = "src/stm32h723/rcc.zig" },
     };
 
     for (available_examples) |example| {

examples/stmicro/stm32/src/stm32h723/rcc.zig

@@ -0,0 +1,70 @@
+// This is an example RCC configuration for the STM32H723
+// Configurations and procedures may vary for other targets
+
+const std = @import("std");
+const microzig = @import("microzig");
+const hal = microzig.hal;
+const pins = hal.pins;
+const rcc = hal.rcc;
+const PWR = microzig.chip.peripherals.PWR;
+
+//set Master Clock Output(MCO) pins
+const global_pins = pins.GlobalConfiguration{
+    .GPIOA = .{
+        .PIN8 = .{
+            .mode = .{
+                .alternate_function = .{
+                    .afr = .AF0,
+                },
+            },
+            .name = "MCO1",
+        },
+    },
+    .GPIOC = .{
+        .PIN9 = .{
+            .mode = .{
+                .alternate_function = .{ .afr = .AF0 },
+            },
+            .name = "MCO2",
+        },
+    },
+};
+
+pub fn main() !void {
+
+    // set inital power state
+    PWR.CR3.modify(.{
+        .LDOEN = 1,
+        .SDEN = 1,
+    });
+
+    //configure cpu clock to 550 Mhz
+    _ = try rcc.apply(.{
+        .HSE_VALUE = 25_000_000,
+        .PLLSource = .RCC_PLLSOURCE_HSE,
+        .DIVM1 = 5,
+        .DIVN1 = 110,
+        .DIVP1 = 1,
+        .DIVQ1 = 10,
+        .SYSCLKSource = .RCC_SYSCLKSOURCE_PLLCLK,
+        .RCC_MCO1Source = .RCC_MCO1SOURCE_PLL1QCLK,
+        .RCC_MCO2Source = .RCC_MCO2SOURCE_LSICLK,
+        .RCC_MCODiv2 = .RCC_MCODIV_10,
+        .RCC_MCODiv1 = .RCC_MCODIV_10,
+        .D2PPRE2 = .RCC_APB2_DIV2,
+        .D2PPRE1 = .RCC_APB1_DIV2,
+        .D3PPRE = .RCC_APB4_DIV2,
+        .D1PPRE = .RCC_APB3_DIV2,
+        .HPRE = .RCC_HCLK_DIV2,
+        .flags = .{
+            .MCO1Config = true,
+            .MCO2Config = true,
+            .HSEOscillator = true,
+        },
+    });
+
+    //apply pins config
+    _ = global_pins.apply();
+
+    while (true) {}
+}

port/stmicro/stm32/build.zig.zon

@@ -10,8 +10,8 @@
             .hash = "N-V-__8AAFi8WBlOh-NikHFVBjzQE0F1KixgKjVWYnlijPNm",
         },
         .ClockHelper = .{
-            .url = "git+https://github.com/ZigEmbeddedGroup/ClockHelper#7fd073b1be9544941c15f9a63032ed06149ddb70",
-            .hash = "ClockHelper-2.0.0-RcMaOSniGQHXH_qeoZbQDG64XThqpXTVPMfJ6P7LHpYY",
+            .url = "git+https://github.com/ZigEmbeddedGroup/ClockHelper#922c35eb54f0417318ccfcc32367bdcf11823ede",
+            .hash = "ClockHelper-2.0.0-RcMaOUMGIwEUEHQJ0C2Q-KbWdKXN2GqzQcs9MpVSTgm3",
         },
     },
     .paths = .{

port/stmicro/stm32/src/Chips.zig

@@ -21522,6 +21522,10 @@ pub fn init(dep: *std.Build.Dependency, hal_imports: []std.Build.Module.Import)
                 .{ .name = "RAM_D3", .tag = .ram, .offset = 0x38000000, .length = 0x4000, .access = .rwx },
             },
         },
+        .hal = .{
+            .root_source_file = b.path("src/hals/STM32H723.zig"),
+            .imports = hal_imports,
+        },
     };
 
     ret.STM32H723VG = b.allocator.create(microzig.Target) catch @panic("out of memory");
@@ -21549,6 +21553,10 @@ pub fn init(dep: *std.Build.Dependency, hal_imports: []std.Build.Module.Import)
                 .{ .name = "RAM_D3", .tag = .ram, .offset = 0x38000000, .length = 0x4000, .access = .rwx },
             },
         },
+        .hal = .{
+            .root_source_file = b.path("src/hals/STM32H723.zig"),
+            .imports = hal_imports,
+        },
     };
 
     ret.STM32H723ZE = b.allocator.create(microzig.Target) catch @panic("out of memory");
@@ -21576,6 +21584,10 @@ pub fn init(dep: *std.Build.Dependency, hal_imports: []std.Build.Module.Import)
                 .{ .name = "RAM_D3", .tag = .ram, .offset = 0x38000000, .length = 0x4000, .access = .rwx },
             },
         },
+        .hal = .{
+            .root_source_file = b.path("src/hals/STM32H723.zig"),
+            .imports = hal_imports,
+        },
     };
 
     ret.STM32H723ZG = b.allocator.create(microzig.Target) catch @panic("out of memory");
@@ -21603,6 +21615,10 @@ pub fn init(dep: *std.Build.Dependency, hal_imports: []std.Build.Module.Import)
                 .{ .name = "RAM_D3", .tag = .ram, .offset = 0x38000000, .length = 0x4000, .access = .rwx },
             },
         },
+        .hal = .{
+            .root_source_file = b.path("src/hals/STM32H723.zig"),
+            .imports = hal_imports,
+        },
     };
 
     ret.STM32H725AE = b.allocator.create(microzig.Target) catch @panic("out of memory");

port/stmicro/stm32/src/generate.zig

@@ -278,15 +278,22 @@ fn generate_chips_file(
                 \\        },
                 \\
             );
-        }
-        if (std.mem.startsWith(u8, chip_file.name, "STM32L47")) {
+        } else if (std.mem.startsWith(u8, chip_file.name, "STM32L47")) {
             try writer.writeAll(
                 \\        .hal = .{
                 \\            .root_source_file = b.path("src/hals/STM32L47X.zig"),
                 \\            .imports = hal_imports,
                 \\        },
                 \\
             );
+        } else if (std.mem.startsWith(u8, chip_file.name, "STM32H723")) {
+            try writer.writeAll(
+                \\        .hal = .{
+                \\            .root_source_file = b.path("src/hals/STM32H723.zig"),
+                \\            .imports = hal_imports,
+                \\        },
+                \\
+            );
         }
 
         try writer.writeAll(

port/stmicro/stm32/src/hals/STM32H723.zig

@@ -0,0 +1,28 @@
+const std = @import("std");
+const microzig = @import("microzig");
+
+pub const systick_timer = @import("./common/systick_timer.zig");
+pub const systick = @import("./common/systick.zig");
+pub const gpio = @import("./common/gpio_v2.zig");
+pub const pins = @import("./common/pins_v2.zig");
+pub const rcc = @import("./STM32H723/rcc.zig");
+
+pub fn get_sys_clk() u32 {
+    return @intFromFloat(rcc.current_clocks.SysCLKOutput);
+}
+
+pub fn get_systick_clk() u32 {
+    return @intFromFloat(rcc.current_clocks.CortexSysOutput);
+}
+
+pub var Reset_Reason: rcc.ResetReason = .unknown;
+pub fn init() void {
+    const reset = rcc.get_reset_reason();
+    Reset_Reason = reset;
+
+    // force default configuration; required for clock configuration
+    // Power control (PWR) 6.4.1 System supply startup - page: 238 RM0468 Rev 3
+    if (reset == .power_on) {
+        microzig.chip.peripherals.PWR.CR3.raw = 0x0000_0046;
+    }
+}