1 files changed, 16 insertions, 0 deletions

diff --git a/lib/chibios/os/hal/ports/STM32/LLD/EXTIv1/notes.txt b/lib/chibios/os/hal/ports/STM32/LLD/EXTIv1/notes.txt
new file mode 100644
index 000000000..a74c93e7c
--- /dev/null
+++ b/lib/chibios/os/hal/ports/STM32/LLD/EXTIv1/notes.txt
@@ -0,0 +1,16 @@
+STM32 EXTIv1 driver.
+
+Driver capability:
+
+- Support for the EXTI peripheral.
+
+The file registry must export:
+
+STM32_EXTI_HAS_GROUP2       - True if lines from 32 to 63 are present.
+STM32_EXTI_SEPARATE_RF      - True if EXTI has separate status registers
+                              for falling and raising edges.
+STM32_EXTI_IMR1_MASK        - Mask of the fixed lines that must not be
+                              configured by the driver (0..31).
+STM32_EXTI_IMR2_MASK        - Mask of the fixed lines that must not be
+                              configured by the driver (32..63). Only required
+                              if STM32_EXTI_NUM_LINES is greater than 32.