Merge pull request #3472 from hathach/u0_fix

fix stm32u0 data stride

3 files changed, 15 insertions, 16 deletions

diff --git a/.idea/cmake.xml b/.idea/cmake.xml
index cc73ca8fc..5f9e1acd2 100644
--- a/.idea/cmake.xml
+++ b/.idea/cmake.xml
@@ -131,6 +131,7 @@
       <configuration PROFILE_NAME="stm32h7s3nucleo" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=stm32h7s3nucleo -DLOG=1" />
       <configuration PROFILE_NAME="stm32l0538disco" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=stm32l0538disco -DLOG=0 -DLOGGER=RTT" />
       <configuration PROFILE_NAME="stm32l476disco" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=stm32l476disco -DLOG=1 -DLOGGER=RTT" />
+      <configuration PROFILE_NAME="stm32u083cdk" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=stm32u083cdk -DLOG=1 -DLOGGER=RTT" />
       <configuration PROFILE_NAME="stm32u575nucleo" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=stm32u575nucleo -DLOG=1 -DLOGGER=RTT" />
       <configuration PROFILE_NAME="stm32u5a5nucleo" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=stm32u5a5nucleo -DLOG=1 -DLOGGER=RTT" />
       <configuration PROFILE_NAME="stm32wb55nucleo" ENABLED="false" GENERATION_OPTIONS="-DBOARD=stm32wb55nucleo" />
diff --git a/src/portable/st/stm32_fsdev/fsdev_common.h b/src/portable/st/stm32_fsdev/fsdev_common.h
index c53e345b0..b749a92ff 100644
--- a/src/portable/st/stm32_fsdev/fsdev_common.h
+++ b/src/portable/st/stm32_fsdev/fsdev_common.h
@@ -63,23 +63,21 @@ TU_VERIFY_STATIC(FSDEV_BTABLE_BASE % 8 == 0, "BTABLE base must be aligned to 8 b
 
 // CFG_TUSB_FSDEV_PMA_SIZE is PMA buffer size in bytes.
 // - 512-byte devices, access with a stride of two words (use every other 16-bit address)
-// - 1024-byte devices, access with a stride of one word (use every 16-bit address)
+// - 1024-byte devices, access with a stride of one word (use every 16-bit address) or 32-bit address
 // - 2048-byte devices, access with 32-bit address
-
-// For purposes of accessing the packet
-#if CFG_TUSB_FSDEV_PMA_SIZE == 512
-  // 1x16 bit / word access scheme
-  #define FSDEV_PMA_STRIDE  2
-  #define pma_access_scheme TU_ATTR_ALIGNED(4)
-#elif CFG_TUSB_FSDEV_PMA_SIZE == 1024
-  // 2x16 bit / word access scheme
-  #define FSDEV_PMA_STRIDE 1
-  #define pma_access_scheme
-#elif CFG_TUSB_FSDEV_PMA_SIZE == 2048
+#if CFG_TUSB_FSDEV_PMA_SIZE == 2048 || TU_CHECK_MCU(OPT_MCU_STM32U0)
   // 32 bit access scheme
   #define FSDEV_BUS_32BIT
   #define FSDEV_PMA_STRIDE 1
   #define pma_access_scheme
+#elif CFG_TUSB_FSDEV_PMA_SIZE == 1024
+  // 2x16 bit / word access scheme
+  #define FSDEV_PMA_STRIDE 1
+  #define pma_access_scheme
+#elif CFG_TUSB_FSDEV_PMA_SIZE == 512
+  // 1x16 bit / word access scheme
+  #define FSDEV_PMA_STRIDE  2
+  #define pma_access_scheme TU_ATTR_ALIGNED(4)
 #endif
 
 // The fsdev_bus_t type can be used for both register and PMA access necessities
diff --git a/src/tusb_option.h b/src/tusb_option.h
index d34f2b710..8e270e5f2 100644
--- a/src/tusb_option.h
+++ b/src/tusb_option.h
@@ -340,14 +340,14 @@
 #if defined(TUP_USBIP_FSDEV)
   #define CFG_TUD_EDPT_DEDICATED_HWFIFO 1
 
-  #if CFG_TUSB_FSDEV_PMA_SIZE == 512
-    #define CFG_TUSB_FIFO_HWFIFO_DATA_STRIDE 2 // 16-bit data
+  #if CFG_TUSB_FSDEV_PMA_SIZE == 2048 || TU_CHECK_MCU(OPT_MCU_STM32U0)
+    #define CFG_TUSB_FIFO_HWFIFO_DATA_STRIDE 4 // 32-bit data
     #define CFG_TUSB_FIFO_HWFIFO_ADDR_STRIDE 4 // 32-bit address increase
   #elif CFG_TUSB_FSDEV_PMA_SIZE == 1024
     #define CFG_TUSB_FIFO_HWFIFO_DATA_STRIDE 2 // 16-bit data
     #define CFG_TUSB_FIFO_HWFIFO_ADDR_STRIDE 2 // 16-bit address increase
-  #elif CFG_TUSB_FSDEV_PMA_SIZE == 2048
-    #define CFG_TUSB_FIFO_HWFIFO_DATA_STRIDE 4 // 32-bit data
+  #elif CFG_TUSB_FSDEV_PMA_SIZE == 512
+    #define CFG_TUSB_FIFO_HWFIFO_DATA_STRIDE 2 // 16-bit data
     #define CFG_TUSB_FIFO_HWFIFO_ADDR_STRIDE 4 // 32-bit address increase
   #endif
 #endif