From 84d53391ea92fc142df39d692bdcff55d9b938e5 Mon Sep 17 00:00:00 2001
From: Fabian Wolter <github@fabian-wolter.de>
Date: Sun, 15 Dec 2024 20:52:12 +0100
Subject: [PATCH] Extract DMA remapping data for F07/F3

This is the basis to fix embassy-rs/embassy#3643
---
 stm32-data-gen/src/dma.rs             | 13 +++++++++++++
 stm32-data-serde/src/lib.rs           |  2 ++
 stm32-metapac-gen/res/src/metadata.rs |  1 +
 stm32-metapac-gen/src/data.rs         |  1 +
 4 files changed, 17 insertions(+)

diff --git a/stm32-data-gen/src/dma.rs b/stm32-data-gen/src/dma.rs
index 6c217e8e1..182fc5a54 100644
--- a/stm32-data-gen/src/dma.rs
+++ b/stm32-data-gen/src/dma.rs
@@ -164,6 +164,7 @@ impl DmaChannels {
                                         signal: request.to_string(),
                                         channel: None,
                                         dmamux: Some(req_dmamux.to_string()),
+                                        syscfg_cfgr1_remap_bit: None,
                                         request: Some(request_num),
                                         dma: None,
                                     })
@@ -246,6 +247,16 @@ impl DmaChannels {
                             let parts: Vec<_> = original_target_name.split(':').collect();
                             let target_name = parts[0];
 
+                            let syscfg_cfgr1_remap_bit = if parts.len() > 1 && parts[1].contains("Remap") {
+                                match parts[1].chars().last().unwrap() {
+                                    '0' => Some(false),
+                                    '1' => Some(true),
+                                    _ => None,
+                                }
+                            } else {
+                                None
+                            };
+
                             //  Chips with single DAC refer to channels by DAC1/DAC2
                             let target_name = match target_name {
                                 "DAC1" => "DAC_CH1",
@@ -274,6 +285,7 @@ impl DmaChannels {
                                         signal: request.to_string(),
                                         channel: Some(format!("{dma_peri_name}_CH{channel_name}")),
                                         dmamux: None,
+                                        syscfg_cfgr1_remap_bit,
                                         request: requests.get(&original_target_name).copied(),
                                         dma: None,
                                     };
@@ -339,6 +351,7 @@ impl DmaChannels {
                         dma: Some(instance.to_string()),
                         channel: None,
                         dmamux: None,
+                        syscfg_cfgr1_remap_bit: None,
                         request: Some(request_num),
                     });
             }
diff --git a/stm32-data-serde/src/lib.rs b/stm32-data-serde/src/lib.rs
index b45cbc128..c8e9492de 100644
--- a/stm32-data-serde/src/lib.rs
+++ b/stm32-data-serde/src/lib.rs
@@ -228,6 +228,8 @@ pub mod chip {
                 #[serde(skip_serializing_if = "Option::is_none")]
                 pub dmamux: Option<String>,
                 #[serde(skip_serializing_if = "Option::is_none")]
+                pub syscfg_cfgr1_remap_bit: Option<bool>,
+                #[serde(skip_serializing_if = "Option::is_none")]
                 pub request: Option<u8>,
             }
         }
diff --git a/stm32-metapac-gen/res/src/metadata.rs b/stm32-metapac-gen/res/src/metadata.rs
index 96802ed6e..42f746e56 100644
--- a/stm32-metapac-gen/res/src/metadata.rs
+++ b/stm32-metapac-gen/res/src/metadata.rs
@@ -243,5 +243,6 @@ pub struct PeripheralDmaChannel {
     pub channel: Option<&'static str>,
     pub dmamux: Option<&'static str>,
     pub dma: Option<&'static str>,
+    pub syscfg_cfgr1_remap_bit: Option<bool>,
     pub request: Option<u32>,
 }
diff --git a/stm32-metapac-gen/src/data.rs b/stm32-metapac-gen/src/data.rs
index dc24d63fe..a8f44d625 100644
--- a/stm32-metapac-gen/src/data.rs
+++ b/stm32-metapac-gen/src/data.rs
@@ -449,6 +449,7 @@ pub struct PeripheralDmaChannel {
     pub signal: String,
     pub channel: Option<String>,
     pub dmamux: Option<String>,
+    pub syscfg_cfgr1_remap_bit: Option<bool>,
     pub dma: Option<String>,
     pub request: Option<u32>,
 }