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altos/ao_storage: allow erased byte value to be set by application
author
Keith Packard
<keithp@keithp.com>
Tue, 23 Jun 2020 23:15:28 +0000
(16:15 -0700)
committer
Keith Packard
<keithp@keithp.com>
Sat, 8 Aug 2020 03:30:11 +0000
(20:30 -0700)
External flash is usually 0xff for erased bytes, but other memory may
use different values
Signed-off-by: Keith Packard <keithp@keithp.com>
src/kernel/ao_storage.c
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diff --git
a/src/kernel/ao_storage.c
b/src/kernel/ao_storage.c
index 1554cee777254740a0d98f1bd8d7e3b71f8dad7c..213ec2d6872825cda21173ff15a13bfd8d6a5a6b 100644
(file)
--- a/
src/kernel/ao_storage.c
+++ b/
src/kernel/ao_storage.c
@@
-86,6
+86,10
@@
ao_storage_write(ao_pos_t pos, void *v_buf, uint16_t len)
return 1;
}
+#ifndef AO_STORAGE_ERASED_BYTE
+#define AO_STORAGE_ERASED_BYTE 0xff
+#endif
+
uint8_t
ao_storage_is_erased(uint32_t pos)
{
@@
-107,7
+111,7
@@
ao_storage_is_erased(uint32_t pos)
goto done;
}
for (i = 0; i < this_time; i++)
- if (storage_data[i] !=
0xff
) {
+ if (storage_data[i] !=
AO_STORAGE_ERASED_BYTE
) {
ret = 0;
goto done;
}