cpu/stm32: fix RAM_LEN for F427, F429, F437, F439 models

These models have 256 kByte RAM, but the upper 64 kByte are used as CCM data RAM accessible at 0x1000:0000. The access to 0x2003:xxxx leads to a hard fault.
RIOT-OS · Nov 15, 2022 · 7b99a51 · 7b99a51
1 parent 78ee505
commit 7b99a51
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/cpu/stm32/stm32_mem_lengths.mk b/cpu/stm32/stm32_mem_lengths.mk
@@ -159,12 +159,14 @@ ifeq ($(STM32_TYPE), F)
       RAM_LEN = 32K
     else ifneq (, $(filter $(STM32_MODEL), 411 446))
       RAM_LEN = 128K
-    else ifneq (, $(filter $(STM32_MODEL), 412 427 429 437 439))
+    else ifneq (, $(filter $(STM32_MODEL), 412))
       RAM_LEN = 256K
     else ifneq (, $(filter $(STM32_MODEL), 413 423))
       RAM_LEN = 320K
     else ifneq (, $(filter $(STM32_MODEL), 415 417))
       RAM_LEN = 192K
+    else ifneq (, $(filter $(STM32_MODEL), 427 429 437 439))
+      RAM_LEN = 192K
     else ifneq (, $(filter $(STM32_MODEL), 469 479))
       RAM_LEN = 384K
     endif