From 8019b4f48f874dc0a38770052254e7c9bb861a4d Mon Sep 17 00:00:00 2001
From: Rasmus Melchior Jacobsen <rmja@laesoe.org>
Date: Sat, 25 Mar 2023 14:24:21 +0100
Subject: [PATCH] Re-add WRITE_SIZE as it seems to be the same for all regions

---
 stm32-metapac-gen/src/lib.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/stm32-metapac-gen/src/lib.rs b/stm32-metapac-gen/src/lib.rs
index c59fff9..56cd702 100644
--- a/stm32-metapac-gen/src/lib.rs
+++ b/stm32-metapac-gen/src/lib.rs
@@ -132,6 +132,18 @@ impl Gen {
         writeln!(&mut extra, "pub const FLASH_BASE: usize = {};", first_flash.address).unwrap();
         writeln!(&mut extra, "pub const FLASH_SIZE: usize = {};", total_flash_size).unwrap();
 
+        let write_sizes: HashSet<_> = flash_regions
+            .iter()
+            .map(|r| r.settings.as_ref().unwrap().write_size)
+            .collect();
+        assert_eq!(1, write_sizes.len());
+        writeln!(
+            &mut extra,
+            "pub const WRITE_SIZE: usize = {};",
+            write_sizes.iter().next().unwrap()
+        )
+        .unwrap();
+
         // Cleanups!
         transform::sort::Sort {}.run(&mut ir).unwrap();
         transform::Sanitize {}.run(&mut ir).unwrap();