From: bernie <bernie@38d2e660-2303-0410-9eaa-f027e97ec537>
Date: Tue, 10 Aug 2004 06:57:22 +0000 (+0000)
Subject: eeprom_erase(): New function.
X-Git-Tag: 1.0.0~1115
X-Git-Url: https://codewiz.org/gitweb?a=commitdiff_plain;h=283ff66de6da462b9c7f03e58d259951b05de863;p=bertos.git

eeprom_erase(): New function.


git-svn-id: https://src.develer.com/svnoss/bertos/trunk@126 38d2e660-2303-0410-9eaa-f027e97ec537
---

diff --git a/drv/eeprom.c b/drv/eeprom.c
index 85b2e20d..718a52de 100755
--- a/drv/eeprom.c
+++ b/drv/eeprom.c
@@ -17,6 +17,9 @@
 
 /*
  * $Log$
+ * Revision 1.4  2004/08/10 06:57:22  bernie
+ * eeprom_erase(): New function.
+ *
  * Revision 1.3  2004/07/29 22:57:09  bernie
  * Add 24LC16 support.
  *
@@ -31,6 +34,7 @@
 #include <mware/byteorder.h> /* cpu_to_be16() */
 #include <drv/kdebug.h>
 #include <hw.h>
+#include <string.h> // memset()
 
 #include <avr/twi.h>
 
@@ -326,6 +330,28 @@ int eeprom_read_char(e2addr_t addr)
 }
 
 
+/*!
+ * Erase specified part of eeprom, writing 0xFF.
+ *
+ * \param addr  starting address
+ * \param len   length of block to erase
+ */
+void eeprom_erase(e2addr_t addr, size_t count)
+{
+	uint8_t buf[EEPROM_BLKSIZE];
+	memset(buf, 0xFF, sizeof buf);
+
+	// Clear all but struct hw_info at start of eeprom
+	while (count)
+	{
+		size_t size = MIN(count, sizeof buf);
+		eeprom_write(addr, buf, size);
+		addr += size;
+		count -= size;
+	}
+}
+
+
 /*!
  * Initialize TWI module.
  */
diff --git a/drv/eeprom.h b/drv/eeprom.h
index 287a9ce3..e1793c28 100755
--- a/drv/eeprom.h
+++ b/drv/eeprom.h
@@ -15,6 +15,9 @@
 
 /*
  * $Log$
+ * Revision 1.3  2004/08/10 06:57:22  bernie
+ * eeprom_erase(): New function.
+ *
  * Revision 1.2  2004/07/29 22:57:09  bernie
  * Add 24LC16 support.
  *
@@ -53,6 +56,7 @@ bool eeprom_write(e2addr_t addr, const void *buf, size_t count);
 bool eeprom_read(e2addr_t addr, void *buf, size_t count);
 bool eeprom_write_char(e2addr_t addr, char c);
 int eeprom_read_char(e2addr_t addr);
+void eeprom_erase(e2addr_t addr, size_t count);
 void eeprom_init(void);
 void eeprom_test(void);