From: Keith Packard <keithp@keithp.com>
Date: Wed, 29 Aug 2012 18:19:17 +0000 (-0700)
Subject: altos: Note changes to configured AES key for SPI radio convenience
X-Git-Tag: 1.1~52
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=7f64e62356bcfcd6ba8a88b09251793481bcd56c

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>
---

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