Naming convention fixes; Partial merge from Grillo.

[bertos.git] / drv / eeprom.c

diff --git a/drv/eeprom.c b/drv/eeprom.c
index 8280ef2c75d558ee6ebf5bdf864d0f821d1474be..9eeb011a96110813474f051e3318d0ee93f33ad1 100755 (executable)
--- a/drv/eeprom.c
+++ b/drv/eeprom.c
@@ -16,6 +16,9 @@
 
 /*#*
  *#* $Log$
+ *#* Revision 1.19  2006/03/20 17:49:50  bernie
+ *#* Make the TWI driver more generic to work with devices other than EEPROMS.
+ *#*
  *#* Revision 1.18  2005/11/27 23:33:40  bernie
  *#* Use appconfig.h instead of cfg/config.h.
  *#*
@@ -52,6 +55,18 @@
        #error CONFIG_EEPROM_VERIFY must be defined to either 0 or 1
 #endif
 
+/**
+ * EEPROM ID code
+ */
+#define EEPROM_ID  0xA0
+
+/**
+ * This macros form the correct slave address for EEPROMs
+ */
+#define EEPROM_ADDR(x) (EEPROM_ID | (((uint8_t)(x)) << 1))
+
+
+
 
 /*!
  * Copy \c count bytes from buffer \c buf to
@@ -80,7 +95,7 @@ static bool eeprom_writeRaw(e2addr_t addr, const void *buf, size_t count)
                uint8_t blk_offs = (uint8_t)addr;
 
                result =
-                       twi_start_w(blk_addr)
+                       twi_start_w(EEPROM_ADDR(blk_addr))
                        && twi_send(&blk_offs, sizeof blk_offs)
                        && twi_send(buf, size);
 
@@ -90,7 +105,7 @@ static bool eeprom_writeRaw(e2addr_t addr, const void *buf, size_t count)
                uint16_t addr_be = cpu_to_be16(addr);
 
                result =
-                       twi_start_w(0)
+                       twi_start_w(EEPROM_ID)
                        && twi_send((uint8_t *)&addr_be, sizeof addr_be)
                        && twi_send(buf, size);
 
@@ -198,9 +213,9 @@ bool eeprom_read(e2addr_t addr, void *buf, size_t count)
        uint8_t blk_offs = (uint8_t)addr;
 
        bool res =
-               twi_start_w(blk_addr)
+               twi_start_w(EEPROM_ADDR(blk_addr))
                && twi_send(&blk_offs, sizeof blk_offs)
-               && twi_start_r(blk_addr)
+               && twi_start_r(EEPROM_ADDR(blk_addr))
                && twi_recv(buf, count);
 
 #elif CONFIG_EEPROM_TYPE == EEPROM_24XX256
@@ -209,9 +224,9 @@ bool eeprom_read(e2addr_t addr, void *buf, size_t count)
        addr = cpu_to_be16(addr);
 
        bool res =
-               twi_start_w(0)
+               twi_start_w(EEPROM_ID)
                && twi_send((uint8_t *)&addr, sizeof(addr))
-               && twi_start_r(0)
+               && twi_start_r(EEPROM_ID)
                && twi_recv(buf, count);
 #else
        #error Unknown device type