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authorKeith Packard <keithp@keithp.com>2016-11-11 23:38:03 -0800
committerKeith Packard <keithp@keithp.com>2017-02-20 11:16:50 -0800
commitaffcf6ffc08313151541993ee543bfe390165e81 (patch)
tree764e4e040f99cf73835bdd75e42dd9ee2e73df06
parent30db58ade19ec69272a8c39c2f13d7919ca491a9 (diff)
altos/stmf0: Add a comment about the requirements for using ao_flash_stm
Need HSI clock and the flashing functions loaded in ram. Signed-off-by: Keith Packard <keithp@keithp.com>
-rw-r--r--src/stmf0/ao_flash_stm.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/stmf0/ao_flash_stm.c b/src/stmf0/ao_flash_stm.c
index ef2e2619..2d57eea7 100644
--- a/src/stmf0/ao_flash_stm.c
+++ b/src/stmf0/ao_flash_stm.c
@@ -19,6 +19,12 @@
#include <ao.h>
#include <ao_flash.h>
+/* Note that the HSI clock must be running for this code to work.
+ * Also, special care must be taken with the linker to ensure that the
+ * functions marked 'ramtext' land in ram and not rom. An example of that
+ * can be found in altos-loader.ld
+ */
+
static uint8_t
ao_flash_is_locked(void)
{