From: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
Date: Wed, 29 Aug 2012 15:08:51 +0000 (+0200)
Subject: logging: allow multiple flushes
X-Git-Tag: gedasymbols-20120913~38
X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=commitdiff_plain;h=4db795a97ff9bf1d859b797242df8f4564231f82;p=bike-lights.git

logging: allow multiple flushes
---

diff --git a/logging.c b/logging.c
index 0ade201..05716bf 100644
--- a/logging.c
+++ b/logging.c
@@ -13,6 +13,7 @@ static unsigned char log_state EEMEM;
 /* Upper 4 bits are reset count, lower 4 bits are reset reason from MCUSR */
 static unsigned char reboot_count EEMEM = 0;
 static unsigned char can_write_eeprom = 0;
+static uint16_t flushed_end;
 
 void log_set_state(unsigned char val)
 {
@@ -40,6 +41,7 @@ void log_init()
 
 	log_set_state(1);
 	log_buffer_count = 0;
+	flushed_end = 0;
 }
 
 void log_byte(unsigned char byte) {
@@ -61,16 +63,18 @@ void log_word(uint16_t word) {
 void log_flush() {
 	unsigned char i;
 
-	log_buffer_count = LOG_BUFFER;
-
 	if (!can_write_eeprom)
 		return;
 
-	for (i=0; i < LOG_BUFFER; i++) {
+	for (i=flushed_end; i < log_buffer_count; i++) {
 		eeprom_write_byte(&log_buffer_ee[i],
 			log_buffer[i]);
 	}
-	log_set_state(0x42);
+
+	flushed_end = i;
+
+	if (flushed_end == LOG_BUFFER)
+		log_set_state(0x42);
 }
 
 #endif