X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=drv%2Feeprom.c;h=81b295888e195e02a1b15a59580161c90097e846;hb=b6b9bf085c6a02bca4441599d176344e0153a612;hp=85b2e20de5457d795b100cbba8893df145915bac;hpb=6f8beb702446d9cf0d4474598199357c4b8a5bd2;p=bertos.git

diff --git a/drv/eeprom.c b/drv/eeprom.c
index 85b2e20d..81b29588 100755
--- a/drv/eeprom.c
+++ b/drv/eeprom.c
@@ -5,35 +5,61 @@
  * All Rights Reserved.
  * -->
  *
- * \version $Id$
- *
- * \author Stefano Fedrigo <aleph@develer.com>
- * \author Bernardo Innocenti <bernie@develer.com>
- *
  * \brief Driver for the 24xx16 and 24xx256 I2C EEPROMS (implementation)
  *
  * \note This implementation is AVR specific.
- */
-
-/*
- * $Log$
- * Revision 1.3  2004/07/29 22:57:09  bernie
- * Add 24LC16 support.
- *
- * Revision 1.2  2004/07/22 01:24:43  bernie
- * Document AVR dependency.
- *
- * Revision 1.1  2004/07/20 17:11:18  bernie
- * Import into DevLib.
  *
+ * \version $Id$
+ * \author Stefano Fedrigo <aleph@develer.com>
+ * \author Bernardo Innocenti <bernie@develer.com>
  */
+
+/*#*
+ *#* $Log$
+ *#* Revision 1.10  2004/09/20 03:31:22  bernie
+ *#* Sanitize for C++.
+ *#*
+ *#* Revision 1.9  2004/09/14 21:03:46  bernie
+ *#* Use debug.h instead of kdebug.h.
+ *#*
+ *#* Revision 1.8  2004/08/25 14:12:08  rasky
+ *#* Aggiornato il comment block dei log RCS
+ *#*
+ *#* Revision 1.7  2004/08/24 16:48:40  bernie
+ *#* Note reason for including <macros.h>
+ *#*
+ *#* Revision 1.6  2004/08/24 14:27:20  bernie
+ *#* Doxygen fix.
+ *#*
+ *#* Revision 1.5  2004/08/24 13:46:48  bernie
+ *#* Include <macros.h>.
+ *#*
+ *#* 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.
+ *#*
+ *#* Revision 1.2  2004/07/22 01:24:43  bernie
+ *#* Document AVR dependency.
+ *#*
+ *#* Revision 1.1  2004/07/20 17:11:18  bernie
+ *#* Import into DevLib.
+ *#*
+ *#*/
+
 #include "eeprom.h"
+
 #include <mware/byteorder.h> /* cpu_to_be16() */
-#include <drv/kdebug.h>
+#include <debug.h>
 #include <hw.h>
+#include <macros.h>  // MIN()
+
+#include <string.h> // memset()
 
 #include <avr/twi.h>
 
+
 /* Wait for TWINT flag set: bus is ready */
 #define WAIT_TWI_READY  do {} while (!(TWCR & BV(TWINT)))
 
@@ -136,8 +162,10 @@ static void twi_stop(void)
  *
  * \return true on success, false on error.
  */
-static bool twi_send(const uint8_t *buf, size_t count)
+static bool twi_send(const void *_buf, size_t count)
 {
+	const uint8_t *buf = (const uint8_t *)_buf;
+
 	while (count--)
 	{
 		TWDR = *buf++;
@@ -163,8 +191,10 @@ static bool twi_send(const uint8_t *buf, size_t count)
  *
  * \return true on success, false on error
  */
-static bool twi_recv(uint8_t *buf, size_t count)
+static bool twi_recv(void *_buf, size_t count)
 {
+	uint8_t *buf = (uint8_t *)_buf;
+
 	/*
 	 * When reading the last byte the TWEA bit is not
 	 * set, and the eeprom should answer with NACK
@@ -326,6 +356,28 @@ int eeprom_read_char(e2addr_t addr)
 }
 
 
+/*!
+ * Erase specified part of eeprom, writing 0xFF.
+ *
+ * \param addr   starting address
+ * \param count  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.
  */
@@ -365,8 +417,8 @@ void eeprom_init(void)
 
 void eeprom_test(void)
 {
-	static const char magic[13] = "Humpty Dumpty";
-	char buf[sizeof magic + 1];
+	static const char magic[14] = "Humpty Dumpty";
+	char buf[sizeof magic];
 	size_t i;
 
 	// Write something to EEPROM using unaligned sequential writes