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authorKeith Packard <keithp@keithp.com>2012-08-29 11:19:17 -0700
committerKeith Packard <keithp@keithp.com>2012-08-29 11:19:17 -0700
commit7f64e62356bcfcd6ba8a88b09251793481bcd56c (patch)
treec17096f96566475b6a5fd43b6476f5eb4ee8e3e8 /src
parent1a7d2faf76a46271532102e217c2dd5515e38b72 (diff)
altos: Note changes to configured AES key for SPI radio convenience
Keep a sequence number to mark when the AES key is changed so that the radio code can avoid sending the key before every CMAC radio operation. Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src')
-rw-r--r--src/core/ao.h2
-rw-r--r--src/core/ao_config.c4
2 files changed, 6 insertions, 0 deletions
diff --git a/src/core/ao.h b/src/core/ao.h
index b8bedd85..66c0881f 100644
--- a/src/core/ao.h
+++ b/src/core/ao.h
@@ -718,6 +718,8 @@ extern __xdata uint8_t ao_force_freq;
#define AO_AES_LEN 16
+extern __xdata uint8_t ao_config_aes_seq;
+
struct ao_config {
uint8_t major;
uint8_t minor;
diff --git a/src/core/ao_config.c b/src/core/ao_config.c
index f19dd9cd..ce855ad1 100644
--- a/src/core/ao_config.c
+++ b/src/core/ao_config.c
@@ -463,6 +463,9 @@ ao_config_radio_enable_set(void) __reentrant
#endif /* HAS_RADIO */
#if HAS_AES
+
+__xdata uint8_t ao_config_aes_seq = 1;
+
void
ao_config_key_show(void) __reentrant
{
@@ -485,6 +488,7 @@ ao_config_key_set(void) __reentrant
break;
ao_config.aes_key[i] = ao_cmd_lex_i;
}
+ ++ao_config_aes_seq;
_ao_config_edit_finish();
}
#endif