diff --git a/.gitignore b/.gitignore
index b7337d0..980f11a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,7 +3,9 @@
 /sources
 /tmp
 .idea/
+.DS_Store
 # transform*.yaml
 __pycache__
 
-target/
\ No newline at end of file
+target/
+venv/
\ No newline at end of file
diff --git a/data/registers/hsem_v1.yaml b/data/registers/hsem_v1.yaml
new file mode 100644
index 0000000..0089381
--- /dev/null
+++ b/data/registers/hsem_v1.yaml
@@ -0,0 +1,144 @@
+block/HSEM:
+  description: Hardware semaphore (HSEM).
+  items:
+  - name: R
+    description: HSEM register HSEM_R%s HSEM_R31.
+    array:
+      len: 32
+      stride: 4
+    byte_offset: 0
+    fieldset: R
+  - name: RLR
+    description: HSEM Read lock register.
+    array:
+      len: 32
+      stride: 4
+    byte_offset: 128
+    access: Read
+    fieldset: RLR
+  - name: IER
+    description: HSEM Interrupt enable register.
+    byte_offset: 256
+    fieldset: IER
+    array:
+      len: 2
+      stride: 16
+  - name: ICR
+    description: HSEM Interrupt clear register.
+    byte_offset: 260
+    fieldset: ICR
+    array:
+      len: 2
+      stride: 16
+  - name: ISR
+    description: HSEM Interrupt status register.
+    byte_offset: 264
+    access: Read
+    fieldset: ISR
+    array:
+      len: 2
+      stride: 16
+  - name: MISR
+    description: HSEM Masked interrupt status register.
+    byte_offset: 268
+    access: Read
+    fieldset: MISR
+    array:
+      len: 2
+      stride: 16
+  - name: CR
+    description: HSEM Clear register.
+    byte_offset: 320
+    fieldset: CR
+  - name: KEYR
+    description: HSEM Interrupt clear register.
+    byte_offset: 324
+    fieldset: KEYR
+fieldset/CR:
+  description: HSEM Clear register.
+  fields:
+  - name: COREID
+    description: COREID of semaphores to be cleared.
+    bit_offset: 8
+    bit_size: 4
+  - name: KEY
+    description: Semaphore clear Key.
+    bit_offset: 16
+    bit_size: 16
+fieldset/KEYR:
+  description: HSEM Interrupt clear register.
+  fields:
+  - name: KEY
+    description: Semaphore Clear Key.
+    bit_offset: 16
+    bit_size: 16
+fieldset/R:
+  description: HSEM register HSEM_R%s HSEM_R31.
+  fields:
+  - name: PROCID
+    description: Semaphore ProcessID.
+    bit_offset: 0
+    bit_size: 8
+  - name: COREID
+    description: Semaphore COREID.
+    bit_offset: 8
+    bit_size: 4
+  - name: LOCK
+    description: Lock indication.
+    bit_offset: 31
+    bit_size: 1
+fieldset/RLR:
+  description: HSEM Read lock register.
+  fields:
+  - name: PROCID
+    description: Semaphore ProcessID.
+    bit_offset: 0
+    bit_size: 8
+  - name: COREID
+    description: Semaphore COREID.
+    bit_offset: 8
+    bit_size: 4
+  - name: LOCK
+    description: Lock indication.
+    bit_offset: 31
+    bit_size: 1
+fieldset/IER:
+  description: HSEM Interrupt enable register.
+  fields:
+  - name: ISE
+    description: Interrupt semaphore x enable bit.
+    bit_offset: 0
+    bit_size: 1
+    array:
+      len: 32
+      stride: 1
+fieldset/ICR:
+  description: HSEM Interrupt clear register.
+  fields:
+  - name: ISC
+    description: Interrupt semaphore x clear bit.
+    bit_offset: 0
+    bit_size: 1
+    array:
+      len: 32
+      stride: 1
+fieldset/ISR:
+  description: HSEM Interrupt status register.
+  fields:
+  - name: ISF
+    description: Interrupt semaphore x status bit before enable (mask).
+    bit_offset: 0
+    bit_size: 1
+    array:
+      len: 32
+      stride: 1
+fieldset/MISR:
+  description: HSEM Masked interrupt status register.
+  fields:
+  - name: MISF
+    description: masked interrupt semaphore x status bit after enable (mask).
+    bit_offset: 0
+    bit_size: 1
+    array:
+      len: 32
+      stride: 1
diff --git a/data/registers/hsem_v2.yaml b/data/registers/hsem_v2.yaml
new file mode 100644
index 0000000..3ec588e
--- /dev/null
+++ b/data/registers/hsem_v2.yaml
@@ -0,0 +1,145 @@
+block/HSEM:
+  description: HSEM.
+  items:
+  - name: R
+    description: HSEM register HSEM_R%s HSEM_R31.
+    array:
+      len: 32
+      stride: 4
+    byte_offset: 0
+    fieldset: R
+  - name: RLR
+    description: HSEM Read lock register.
+    array:
+      len: 32
+      stride: 4
+    byte_offset: 128
+    access: Read
+    fieldset: RLR
+  - name: IER
+    description: HSEM Interrupt enable register.
+    byte_offset: 256
+    fieldset: IER
+    array:
+      len: 1
+      stride: 16
+  - name: ICR
+    description: HSEM Interrupt clear register.
+    byte_offset: 260
+    access: Read
+    fieldset: ICR
+    array:
+      len: 1
+      stride: 16
+  - name: ISR
+    description: HSEM Interrupt status register.
+    byte_offset: 264
+    access: Read
+    fieldset: ISR
+    array:
+      len: 1
+      stride: 16
+  - name: MISR
+    description: HSEM Masked interrupt status register.
+    byte_offset: 268
+    access: Read
+    fieldset: MISR
+    array:
+      len: 1
+      stride: 16
+  - name: CR
+    description: HSEM Clear register.
+    byte_offset: 320
+    fieldset: CR
+  - name: KEYR
+    description: HSEM Interrupt clear register.
+    byte_offset: 324
+    fieldset: KEYR
+fieldset/CR:
+  description: HSEM Clear register.
+  fields:
+  - name: COREID
+    description: COREID of semaphores to be cleared.
+    bit_offset: 8
+    bit_size: 4
+  - name: KEY
+    description: Semaphore clear Key.
+    bit_offset: 16
+    bit_size: 16
+fieldset/KEYR:
+  description: HSEM Interrupt clear register.
+  fields:
+  - name: KEY
+    description: Semaphore Clear Key.
+    bit_offset: 16
+    bit_size: 16
+fieldset/R:
+  description: HSEM register HSEM_R%s HSEM_R31.
+  fields:
+  - name: PROCID
+    description: Semaphore ProcessID.
+    bit_offset: 0
+    bit_size: 8
+  - name: COREID
+    description: Semaphore COREID.
+    bit_offset: 8
+    bit_size: 4
+  - name: LOCK
+    description: Lock indication.
+    bit_offset: 31
+    bit_size: 1
+fieldset/RLR:
+  description: HSEM Read lock register.
+  fields:
+  - name: PROCID
+    description: Semaphore ProcessID.
+    bit_offset: 0
+    bit_size: 8
+  - name: COREID
+    description: Semaphore COREID.
+    bit_offset: 8
+    bit_size: 4
+  - name: LOCK
+    description: Lock indication.
+    bit_offset: 31
+    bit_size: 1
+fieldset/IER:
+  description: HSEM Interrupt enable register.
+  fields:
+  - name: ISE
+    description: Interrupt semaphore x enable bit.
+    bit_offset: 0
+    bit_size: 1
+    array:
+      len: 32
+      stride: 1
+fieldset/ICR:
+  description: HSEM Interrupt clear register.
+  fields:
+  - name: ISC
+    description: Interrupt semaphore x clear bit.
+    bit_offset: 0
+    bit_size: 1
+    array:
+      len: 32
+      stride: 1
+fieldset/ISR:
+  description: HSEM Interrupt status register.
+  fields:
+  - name: ISF
+    description: Interrupt semaphore x status bit before enable (mask).
+    bit_offset: 0
+    bit_size: 1
+    array:
+      len: 32
+      stride: 1
+fieldset/MISR:
+  description: HSEM Masked interrupt status register.
+  fields:
+  - name: MISF
+    description: masked interrupt semaphore x status bit after enable (mask).
+    bit_offset: 0
+    bit_size: 1
+    array:
+      len: 32
+      stride: 1
diff --git a/data/registers/hsem_v3.yaml b/data/registers/hsem_v3.yaml
new file mode 100644
index 0000000..f754a68
--- /dev/null
+++ b/data/registers/hsem_v3.yaml
@@ -0,0 +1,145 @@
+block/HSEM:
+  description: Hardware semaphore.
+  items:
+  - name: R
+    description: HSEM register HSEM_R%s HSEM_R31.
+    array:
+      len: 16
+      stride: 4
+    byte_offset: 0
+    fieldset: R
+  - name: RLR
+    description: HSEM Read lock register.
+    array:
+      len: 16
+      stride: 4
+    byte_offset: 128
+    access: Read
+    fieldset: RLR
+  - name: IER
+    description: HSEM Interrupt enable register.
+    byte_offset: 256
+    fieldset: IER
+    array:
+      len: 2
+      stride: 16
+  - name: ICR
+    description: HSEM Interrupt clear register.
+    byte_offset: 260
+    fieldset: ICR
+    array:
+      len: 2
+      stride: 16
+  - name: ISR
+    description: HSEM Interrupt status register.
+    byte_offset: 264
+    access: Read
+    fieldset: ISR
+    array:
+      len: 2
+      stride: 16
+  - name: MISR
+    description: HSEM Masked interrupt status register.
+    byte_offset: 268
+    access: Read
+    fieldset: MISR
+    array:
+      len: 2
+      stride: 16
+  - name: CR
+    description: HSEM Clear register.
+    byte_offset: 320
+    access: Write
+    fieldset: CR
+  - name: KEYR
+    description: HSEM Interrupt clear register.
+    byte_offset: 324
+    fieldset: KEYR
+fieldset/CR:
+  description: HSEM Clear register.
+  fields:
+  - name: COREID
+    description: COREID.
+    bit_offset: 8
+    bit_size: 4
+  - name: KEY
+    description: Semaphore clear Key.
+    bit_offset: 16
+    bit_size: 16
+fieldset/KEYR:
+  description: HSEM Interrupt clear register.
+  fields:
+  - name: KEY
+    description: Semaphore Clear Key.
+    bit_offset: 16
+    bit_size: 16
+fieldset/R:
+  description: HSEM register HSEM_R%s HSEM_R31.
+  fields:
+  - name: PROCID
+    description: Semaphore ProcessID.
+    bit_offset: 0
+    bit_size: 8
+  - name: COREID
+    description: COREID.
+    bit_offset: 8
+    bit_size: 4
+  - name: LOCK
+    description: Lock indication.
+    bit_offset: 31
+    bit_size: 1
+fieldset/RLR:
+  description: HSEM Read lock register.
+  fields:
+  - name: PROCID
+    description: Semaphore ProcessID.
+    bit_offset: 0
+    bit_size: 8
+  - name: COREID
+    description: COREID.
+    bit_offset: 8
+    bit_size: 4
+  - name: LOCK
+    description: Lock indication.
+    bit_offset: 31
+    bit_size: 1
+fieldset/IER:
+  description: HSEM Interrupt enable register.
+  fields:
+  - name: ISE
+    description: Interrupt semaphore x enable bit.
+    bit_offset: 0
+    bit_size: 1
+    array:
+      len: 16
+      stride: 1
+fieldset/ICR:
+  description: HSEM Interrupt clear register.
+  fields:
+  - name: ISC
+    description: Interrupt semaphore x clear bit.
+    bit_offset: 0
+    bit_size: 1
+    array:
+      len: 16
+      stride: 1
+fieldset/ISR:
+  description: HSEM Interrupt status register.
+  fields:
+  - name: ISF
+    description: Interrupt semaphore x status bit before enable (mask).
+    bit_offset: 0
+    bit_size: 1
+    array:
+      len: 16
+      stride: 1
+fieldset/MISR:
+  description: HSEM Masked interrupt status register.
+  fields:
+  - name: MISF
+    description: masked interrupt semaphore x status bit after enable (mask).
+    bit_offset: 0
+    bit_size: 1
+    array:
+      len: 16
+      stride: 1
diff --git a/data/registers/hsem_v4.yaml b/data/registers/hsem_v4.yaml
new file mode 100644
index 0000000..1c0794a
--- /dev/null
+++ b/data/registers/hsem_v4.yaml
@@ -0,0 +1,145 @@
+block/HSEM:
+  description: Hardware semaphore.
+  items:
+  - name: R
+    description: HSEM register HSEM_R%s HSEM_R31.
+    array:
+      len: 16
+      stride: 4
+    byte_offset: 0
+    fieldset: R
+  - name: RLR
+    description: HSEM Read lock register.
+    array:
+      len: 16
+      stride: 4
+    byte_offset: 128
+    access: Read
+    fieldset: RLR
+  - name: IER
+    description: HSEM Interrupt enable register.
+    byte_offset: 256
+    fieldset: IER
+    array:
+      len: 1
+      stride: 16
+  - name: ICR
+    description: HSEM Interrupt clear register.
+    byte_offset: 260
+    fieldset: ICR
+    array:
+      len: 1
+      stride: 16
+  - name: ISR
+    description: HSEM Interrupt status register.
+    byte_offset: 264
+    access: Read
+    fieldset: ISR
+    array:
+      len: 1
+      stride: 16
+  - name: MISR
+    description: HSEM Masked interrupt status register.
+    byte_offset: 268
+    access: Read
+    fieldset: MISR
+    array:
+      len: 1
+      stride: 16
+  - name: CR
+    description: HSEM Clear register.
+    byte_offset: 320
+    access: Write
+    fieldset: CR
+  - name: KEYR
+    description: HSEM Interrupt clear register.
+    byte_offset: 324
+    fieldset: KEYR
+fieldset/ICR:
+  description: HSEM Interrupt clear register.
+  fields:
+  - name: ISC
+    description: Interrupt(N) semaphore n clear bit.
+    bit_offset: 0
+    bit_size: 1
+    array:
+      len: 16
+      stride: 1
+fieldset/IER:
+  description: HSEM Interrupt enable register.
+  fields:
+  - name: ISE
+    description: Interrupt semaphore n enable bit.
+    bit_offset: 0
+    bit_size: 1
+    array:
+      len: 16
+      stride: 1
+fieldset/ISR:
+  description: HSEM Interrupt status register.
+  fields:
+  - name: ISF
+    description: Interrupt(N) semaphore n status bit before enable (mask).
+    bit_offset: 0
+    bit_size: 1
+    array:
+      len: 16
+      stride: 1
+fieldset/MISR:
+  description: HSEM Masked interrupt status register.
+  fields:
+  - name: MISF
+    description: masked interrupt(N) semaphore n status bit after enable (mask).
+    bit_offset: 0
+    bit_size: 1
+    array:
+      len: 16
+      stride: 1
+fieldset/CR:
+  description: HSEM Clear register.
+  fields:
+  - name: COREID
+    description: COREID.
+    bit_offset: 8
+    bit_size: 4
+  - name: KEY
+    description: Semaphore clear Key.
+    bit_offset: 16
+    bit_size: 16
+fieldset/KEYR:
+  description: HSEM Interrupt clear register.
+  fields:
+  - name: KEY
+    description: Semaphore Clear Key.
+    bit_offset: 16
+    bit_size: 16
+fieldset/R:
+  description: HSEM register HSEM_R%s HSEM_R31.
+  fields:
+  - name: PROCID
+    description: Semaphore ProcessID.
+    bit_offset: 0
+    bit_size: 8
+  - name: COREID
+    description: Semaphore COREID.
+    bit_offset: 8
+    bit_size: 4
+  - name: LOCK
+    description: Lock indication.
+    bit_offset: 31
+    bit_size: 1
+fieldset/RLR:
+  description: HSEM Read lock register.
+  fields:
+  - name: PROCID
+    description: Semaphore ProcessID.
+    bit_offset: 0
+    bit_size: 8
+  - name: COREID
+    description: Semaphore COREID.
+    bit_offset: 8
+    bit_size: 4
+  - name: LOCK
+    description: Lock indication.
+    bit_offset: 31
+    bit_size: 1
diff --git a/stm32-data-gen/src/chips.rs b/stm32-data-gen/src/chips.rs
index a64ec43..6e16c2b 100644
--- a/stm32-data-gen/src/chips.rs
+++ b/stm32-data-gen/src/chips.rs
@@ -535,6 +535,14 @@ impl PeriMatcher {
             ("STM32F1.*:GPIO.*", ("gpio", "v1", "GPIO")),
             (".*:GPIO.*", ("gpio", "v2", "GPIO")),
             (".*:IPCC:v1_0", ("ipcc", "v1", "IPCC")),
+            ("STM32H7(4|5)(5|7).*:HSEM:.*", ("hsem", "v1", "HSEM")),
+            ("STM32WB55.*:HSEM:.*", ("hsem", "v1", "HSEM")),
+            ("STM32H735.*:HSEM:.*", ("hsem", "v2", "HSEM")),
+            ("STM32H7B3.*:HSEM:.*", ("hsem", "v2", "HSEM")),
+            ("STM32H753.*:HSEM:.*", ("hsem", "v2", "HSEM")),
+            ("STM32H743.*:HSEM:.*", ("hsem", "v2", "HSEM")),
+            ("STM32WL5.*:HSEM:.*", ("hsem", "v3", "HSEM")),
+            ("STM32WLE.*:HSEM:.*", ("hsem", "v4", "HSEM")),
             (".*:DMAMUX.*", ("dmamux", "v1", "DMAMUX")),
             (r".*:GPDMA\d?:.*", ("gpdma", "v1", "GPDMA")),
             (r".*:BDMA\d?:.*", ("bdma", "v1", "DMA")),
@@ -912,6 +920,7 @@ fn process_group(
     let chip_af = &group.ips.values().find(|x| x.name == "GPIO").unwrap().version;
     let chip_af = chip_af.strip_suffix("_gpio_v1_0").unwrap();
     let chip_af = af.0.get(chip_af);
+
     let cores: Vec<_> = group
         .xml
         .cores
@@ -1047,6 +1056,7 @@ fn process_core(
         "USBRAM",
         "VREFINTCAL",
         "UID",
+        "HSEM",
     ];
     for pname in GHOST_PERIS {
         if let Entry::Vacant(entry) = peri_kinds.entry(pname.to_string()) {