1 files changed, 25 insertions, 0 deletions
diff --git a/02-usart/test_harness/fake_env.c b/02-usart/test_harness/fake_env.c
new file mode 100644
index 0000000..45cb1e9
--- /dev/null
+++ b/02-usart/test_harness/fake_env.c
@@ -0,0 +1,25 @@
+#include "fake_env.h"
+
+#include <stdlib.h>
+#include <assert.h>
+
+#define DEFINE_MEMORY_SEGMENT(name, start_addr, end_addr) \
+  static void* fake_##name = NULL; \
+  void* load_fake_##name##__ () \
+  { \
+    if (fake_##name == NULL) { \
+      fake_##name = malloc((end_addr) - (start_addr)); \
+      assert(fake_##name != NULL); \
+    } \
+    return fake_##name; \
+  }
+
+/* Peripheral buses */
+DEFINE_MEMORY_SEGMENT(apb1, 0x40000000, 0x40010000)
+DEFINE_MEMORY_SEGMENT(apb2, 0x40010000, 0x40020000)
+DEFINE_MEMORY_SEGMENT(ahb1, 0x40020000, 0x40024400)
+DEFINE_MEMORY_SEGMENT(ahb2, 0x48000000, 0x50060C00)
+
+/* SRAM */
+DEFINE_MEMORY_SEGMENT(sram1, 0x20000000, 0x2000C000)
+DEFINE_MEMORY_SEGMENT(sram2, 0x2000C000, 0x20018000)