Revision 0:25e5bc71e65f, committed 2014-06-26

Comitter:

yasuyuki

Date:

Thu Jun 26 13:45:34 2014 +0000

Commit message:

first revision

Changed in this revision

diff -r 000000000000 -r 25e5bc71e65f EEPROM.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/EEPROM.cpp	Thu Jun 26 13:45:34 2014 +0000
@@ -0,0 +1,72 @@
+//**********************
+// EEPROM.cpp for TG-LPC11U35-501
+// TG-LPC11U35-501 has 4K EEPROM.
+// 
+// usage:
+// EEPROM eeprom;
+// char RAM[100]
+// eeprom.write(0, RAM, 100);
+// eeprom.read(0, RAM, 100);
+// eeprom.put(0, 0x00);
+// i=eeprom.get(0);
+//
+// note:
+// valid EEPROM address range is between 0 to 4031
+// top 64 bytes are reserved
+//
+// (C)Copyright 2014 All rights reserved by Y.Onodera
+// http://einstlab.web.fc2.com
+//**********************
+#include "EEPROM.h"
+
+int EEPROM::write( unsigned int EEPROM_addr, char *RAM_addr, unsigned int n ) {
+    command[0] = EEPROM_Write;
+    command[1] = EEPROM_addr;
+    command[2] = (unsigned int)RAM_addr;
+    command[3] = n;
+    command[4] = cclk_kHz;
+ 
+    iap_entry( command, status );
+ 
+    return ( (int)status[0] );
+}
+
+
+int EEPROM::read( unsigned int EEPROM_addr, char *RAM_addr, unsigned int n ) {
+    command[0] = EEPROM_Read;    
+    command[1] = EEPROM_addr;
+    command[2] = (unsigned int)RAM_addr;
+    command[3] = n;
+    command[4] = cclk_kHz;
+ 
+    iap_entry( command, status );
+ 
+    return ( (int)status[0] );
+}
+
+
+int EEPROM::put( unsigned int EEPROM_addr, char data ) {
+    dat[0]=data;
+    command[0] = EEPROM_Write;
+    command[1] = EEPROM_addr;
+    command[2] = (unsigned int)dat;
+    command[3] = 1;
+    command[4] = cclk_kHz;
+ 
+    iap_entry( command, status );
+ 
+    return ( (int)status[0] );
+}
+
+
+char EEPROM::get( unsigned int EEPROM_addr ) {
+    command[0] = EEPROM_Read;    
+    command[1] = EEPROM_addr;
+    command[2] = (unsigned int)dat;
+    command[3] = 1;
+    command[4] = cclk_kHz;
+ 
+    iap_entry( command, status );
+ 
+    return ( dat[0] );
+}

diff -r 000000000000 -r 25e5bc71e65f EEPROM.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/EEPROM.h	Thu Jun 26 13:45:34 2014 +0000
@@ -0,0 +1,67 @@
+//**********************
+// EEPROM.h for TG-LPC11U35-501
+//
+// (C)Copyright 2014 All rights reserved by Y.Onodera
+// http://einstlab.web.fc2.com
+//**********************
+
+#ifndef __ROMAPI_11U35_H_
+#define __ROMAPI_11U35_H_
+
+#include "mbed.h"
+
+typedef enum {
+    CMD_SUCCESS = 0,            // Command is executed successfully.
+    INVALID_COMMAND = 1,        // Invalid command.
+    SRC_ADDR_ERROR = 2,         // Source address is not on a word boundary.
+    DST_ADDR_ERROR = 3,         // Destination address is not on a correct boundary.
+    SRC_ADDR_NOT_MAPPED = 4,    // Source address is not mapped in the memory map.
+    DST_ADDR_NOT_MAPPED = 5,    // Destination address is not mapped in the memory map. 
+    COUNT_ERROR = 6,            // Byte count is not multiple of 4 or is not a permitted value.
+    INVALID_SECTOR = 7,         // Sector number is invalid.
+    SECTOR_NOT_BLANK = 8,       // Sector is not blank.
+    SECTOR_NOT_PREPARED_FOR_WRITE_OPERATION = 9,    // Command to prepare sector for write operation was not executed.
+    COMPARE_ERROR =10,          // Source and destination data is not same.
+    BUSY = 11                   // flash programming hardware interface is busy.
+} IAPstatus;
+
+
+typedef enum {
+    Prepare_sector = 50,
+    Copy_RAM_flash = 51,
+    Erase_sector = 52,
+    Blank_check_sector = 53,
+    Read_Part_ID = 54,
+    Read_Boot_version = 55,
+    Compare = 56,
+    Reinvoke_ISP = 57,
+    Read_UID = 58,
+    Erase_page = 59,
+    EEPROM_Write = 61,
+    EEPROM_Read = 62
+} IAPcommand;
+
+
+#define IAP_LOCATION (0x1FFF1FF1UL)
+typedef void (*IAP)(unsigned int[], unsigned int[]);
+
+
+class EEPROM {
+public:
+    EEPROM() : iap_entry( reinterpret_cast<IAP>(IAP_LOCATION) ), cclk_kHz( SystemCoreClock / 1000 ) {}
+
+    int write( unsigned int EEPROM_addr, char *RAM_addr, unsigned int n );
+    int read( unsigned int EEPROM_addr, char *RAM_addr, unsigned int n );
+    int put( unsigned int EEPROM_addr, char data );
+    char get( unsigned int EEPROM_addr );
+ 
+private:
+    IAP             iap_entry;
+    unsigned int    command[5];
+    unsigned int    status[4];
+    char            dat[1];
+    int             cclk_kHz;
+};
+
+
+#endif /* __ROMAPI_11U35_H_ */