Ensure we have 2K stack.

thejpster · thejpster · commit 7bebaae2ce5b · 2021-11-20T23:24:35.000Z
diff --git a/memory.x b/memory.x
@@ -2,11 +2,8 @@ MEMORY
 {
   /* NOTE K = KiBi = 1024 bytes */
   FLASH : ORIGIN = 0x08000000, LENGTH = 16K
-  RAM : ORIGIN = 0x20000000, LENGTH = 4K
+  RAM : ORIGIN = 0x20000000, LENGTH = 2K
 }
 
-/* This is where the call stack will be allocated. */
-/* The stack is of the full descending type. */
-/* NOTE Do NOT modify `_stack_start` unless you know what you are doing */
-_stack_start = ORIGIN(RAM) + LENGTH(RAM);
-
+/* We have 4K RAM, and only let the linker see 2K, so we have 2K reserved for stack. */
+_stack_start = ORIGIN(RAM) + 4K;

Original file line number	Diff line number	Diff line change
`@@ -2,11 +2,8 @@ MEMORY`
`2`	`2`	`{`
`3`	`3`	`/* NOTE K = KiBi = 1024 bytes */`
`4`	`4`	`FLASH : ORIGIN = 0x08000000, LENGTH = 16K`
`5`		`- RAM : ORIGIN = 0x20000000, LENGTH = 4K`
	`5`	`+ RAM : ORIGIN = 0x20000000, LENGTH = 2K`
`6`	`6`	`}`
`7`	`7`
`8`		`-/* This is where the call stack will be allocated. */`
`9`		`-/* The stack is of the full descending type. */`
`10`		-/* NOTE Do NOT modify `_stack_start` unless you know what you are doing */
`11`		`-_stack_start = ORIGIN(RAM) + LENGTH(RAM);`
`12`		`-`
	`8`	`+/* We have 4K RAM, and only let the linker see 2K, so we have 2K reserved for stack. */`
	`9`	`+_stack_start = ORIGIN(RAM) + 4K;`