Store the configuration on the SD card

log.c

@@ -5,6 +5,7 @@
 #include "uart.h"
 #include "timer.h"
 #include "log.h"
+#include "config.h"
 
 /* This is shared with sdcard.c */
 bool log_enabled;
@@ -37,7 +38,9 @@ void log_put_byte(char c)
 	 * Better than overrunning.
 	 */
 	if (((log_bufferend + 1) % LOG_BUFFERSIZE) == log_bufferstart) {
+#if 0
 		putstr("^");
+#endif
 		return;
 	}
 	log_buffer[log_bufferend++] = c;
@@ -70,6 +73,14 @@ void log_put_header(unsigned int timestamp)
 	log_put_uint(log_read_busytime());
 }
 
+void log_put_config(void)
+{
+	log_put_uint(LOG_MAGIC_CONFIG);
+	log_put_uint(CONFIG_VERSION);
+	log_put_uint(sizeof(struct config));
+	log_put_array((char *)&config, sizeof(struct config));
+}
+
 void log_put_array(char *data, int length)
 {
 	int i;