From 5a3e96bef31959a287b8696778d7d8cf911a7dc4 Mon Sep 17 00:00:00 2001
From: Keith Packard <keithp@keithp.com>
Date: Sat, 13 Aug 2011 18:36:18 -0700
Subject: altosui: Clean up eeprom parsing a bit

Export basic parsing and checksum functions for shared use.
Create 'erased' function to check a chunk of eeprom data for data.

Signed-off-by: Keith Packard <keithp@keithp.com>
---
 altosui/AltosEepromChunk.java | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'altosui/AltosEepromChunk.java')

diff --git a/altosui/AltosEepromChunk.java b/altosui/AltosEepromChunk.java
index 1e42077f..fb632a3f 100644
--- a/altosui/AltosEepromChunk.java
+++ b/altosui/AltosEepromChunk.java
@@ -52,6 +52,13 @@ public class AltosEepromChunk {
 		return data[offset] | (data[offset + 1] << 8);
 	}
 
+	boolean erased(int start, int len) {
+		for (int i = 0; i < len; i++)
+			if (data[start+i] != 0xff)
+				return false;
+		return true;
+	}
+
 	public AltosEepromChunk(AltosSerial serial_line, int block)
 		throws TimeoutException, InterruptedException {
 
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