--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/drivers/ecos_lpc2138_sja1000/nvram_iap.c Fri May 12 22:14:03 2006 +0200
@@ -0,0 +1,318 @@
+/*
+ canfestival@canopencanada.ca
+
+See COPYING file for copyrights details.
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+flash.c
+ save to / retrieve from the non-volatile memory
+ to be tested
+ - can we write/read into an address without working with the whole page (256bytes)
+*/
+
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "applicfg.h"
+#include "data.h"
+#include "objdictdef.h"
+
+#include "lpc2138_defs.h" /* LPC21xx definitions */
+
+#define IAP_LOCATION 0x7ffffff1
+
+
+// define a page of data of NVRAM_BLOCK_SIZE bytes
+//
+short data_len; /* 0 to NVRAM_BLOCK_SIZE bytes */
+short data_num_pages;
+unsigned int *data_page = NULL;
+unsigned int data_addr;
+
+unsigned int *regs_page = NULL;
+
+// local definitons
+void ee_erase(unsigned int ,unsigned int[]); //function erases EEPROM
+void ee_write_page(unsigned int); //function adds a record in EEPROM
+void ee_read_page(unsigned int); //function reads the latest valid record in EEPROM
+
+typedef void (*IAP)(unsigned int [],unsigned int[]);
+IAP iap_entry;
+
+
+
+/************************************************************************/
+/* */
+/* function: */
+/* void ee_erase(unsigned int command_ee,unsigned int result_ee[]) */
+/* */
+/* type: void */
+/* */
+/* parameters: */
+/* command_ee - Not used. */
+/* result_ee[0] - Returns a response to the last IAP command used. */
+/* 0 - EEPROM successfully erased. */
+/* For all other response values, see microcontroller */
+/* User Manual, IAP Commands and Status Codes Summary. */
+/* result_ee[1] - Not used. */
+/* */
+/* version: 1.1 (01/27/2006) */
+/* */
+/* constants defined in LPC2k_ee.h used in this function: */
+/* EE_SEC_L - microcontroller's Flash sector where EEPROM begins */
+/* EE_SEC_H - microcontroller's Flash sector where EEPROM ends */
+/* EE_CCLK - microcontroller's system clock (cclk) */
+/* */
+/* description: */
+/* This function erases LPC2000 on-chip Flash sectors selected to act */
+/* as an EEPROM. All Flash sectors between EE_SEC_L abd EE_SEC_H */
+/* (including these sectors) will be erased using the In Application */
+/* Programming (IAP) routines (see User Manual for more details). */
+/* Also, this function disables all interrupts while erasing the */
+/* EEPROM. If this is not needed, three lines of the ee_erase */
+/* subroutine can simply be commented-out without affecting the */
+/* routine performance at all. */
+/* */
+/* revision history: */
+/* - Rev. 1.1 adds interrupt disable feature. */
+/* */
+/************************************************************************/
+void ee_erase(unsigned int command_ee,unsigned int result_ee[])
+{
+ unsigned int command_iap[5];
+ unsigned int result_iap[3];
+ unsigned long int enabled_interrupts;
+
+ enabled_interrupts = VICIntEnable; //disable all interrupts
+ VICIntEnClr = enabled_interrupts;
+
+ command_iap[0]=50; // prepare sectors from EE_SEC_L to EE_SEC_H for erase
+ command_iap[1]=EE_SEC_L;
+ command_iap[2]=EE_SEC_H;
+ iap_entry=(IAP) IAP_LOCATION;
+ iap_entry(command_iap,result_iap);
+
+ command_iap[0]=52; // erase sectors from EE_SEC_L to EE_SEC_H
+ command_iap[1]=EE_SEC_L;
+ command_iap[2]=EE_SEC_H;
+ command_iap[3]=EE_CCLK;
+ iap_entry=(IAP) IAP_LOCATION;
+ iap_entry(command_iap,result_iap);
+
+ command_iap[0]=53; // blankcheck sectors from EE_SEC_L to EE_SEC_H
+ command_iap[1]=EE_SEC_L;
+ command_iap[2]=EE_SEC_H;
+ iap_entry=(IAP) IAP_LOCATION;
+ iap_entry(command_iap,result_iap);
+
+ VICIntEnable = enabled_interrupts; //restore interrupt enable register
+
+ result_ee[0]=result_iap[0];
+ return;
+}
+
+/************************************************************************/
+/* */
+/* function: */
+/* void ee_write(unsigned int command_ee,unsigned int result_ee[]) */
+/* */
+/* type: void */
+/* */
+/* parameters: */
+/* command_ee - An address of a content of ee_data type that has */
+/* to be programmed into EEPROM. */
+/* result_ee[0] - Returns a response to the last IAP command used. */
+/* 0 - data successfully programmed in EEPROM. */
+/* 501 - no space in EEPROM to program data. */
+/* For all other response values, see microcontroller */
+/* User Manual, IAP Commands and Status Codes Summary. */
+/* result_ee[1] - Not used. */
+/* */
+/* version: 1.1 (01/27/2006) */
+/* */
+/* constants defined in LPC2k_ee.h used in this function: */
+/* EE_BUFFER_SIZE - IAP buffer size; must be 256 or 512 */
+/* NO_SPACE_IN_EEPROM - EEPROM is full and no data can be programmed */
+/* EE_BUFFER_MASK - parameter used for interfacing with IAP */
+/* EE_REC_SIZE - ee_data structure size in bytes */
+/* EE_SEC_L - micro's Flash sector where EEPROM begins */
+/* EE_SEC_H - micro's Flash sector where EEPROM ends */
+/* EE_CCLK - micro's system clock (cclk) */
+/* */
+/* description: */
+/* This function writes a single structure of ee_data type into the */
+/* EEPROM using an In Application Programming (IAP) routines (see */
+/* User Manual for more details). command_ee contains an address of */
+/* this structure. EEPROM is scanned for the last (if any) record */
+/* identifier (EE_REC_ID), and a new record is added next to it. */
+/* Also, this function disables all interrupts while erasing the */
+/* EEPROM. If this is not needed, three lines of the ee_write */
+/* subroutine can simply be commented-out without affecting the */
+/* routine performance at all. */
+/* */
+/* revision history: */
+/* - Rev. 1.1 fixes a bug related to verifying a content written into */
+/* the EEPROM. 1.0 was reporting missmatch even when there were no */
+/* problems at all. */
+/* Rev. 1.1 adds interrupt disable feature. */
+/* */
+/************************************************************************/
+
+void ee_write_page(unsigned int addr)
+{
+ unsigned long int enabled_interrupts;
+ // unsigned char ee_buffer[16];
+ unsigned int command_iap[5], result_iap[3];
+
+ enabled_interrupts = VICIntEnable; //disable all interrupts
+ VICIntEnClr = enabled_interrupts;
+
+ iap_entry = (IAP) IAP_LOCATION;
+
+ // prepare sectors from EE_SEC_L to EE_SEC_H for erase
+ command_iap[0] = 50;
+ command_iap[1] = EE_SEC_L;
+ command_iap[2] = EE_SEC_H;
+ iap_entry(command_iap, result_iap);
+
+ // copy RAM to flash/eeprom
+ command_iap[0] = 51;
+ command_iap[1] = (unsigned int) (addr & EE_START_MASK); // 256 kb boundary
+ command_iap[2] = (unsigned int) (data_page); // should be on a word boundary
+ command_iap[3] = 256;
+ command_iap[4] = EE_CCLK;
+ iap_entry(command_iap, result_iap);
+
+#if 0
+ // compare RAM and flash/eeprom
+ command_iap[0] = 56;
+ command_iap[1] = (unsigned int) data;
+ command_iap[2] = addr;
+ command_iap[3] = dlen;
+ iap_entry(command_iap, result_iap);
+#endif
+
+ VICIntEnable = enabled_interrupts; //restore interrupt enable register
+}
+
+
+/************************************************************************/
+/* */
+/* function: */
+/* void ee_read(unsigned int command_ee,unsigned int result_ee[]) */
+/* */
+/* type: void */
+/* */
+/* parameters: */
+/* command_ee - Not used. */
+/* result_ee[0] - Returns a response. */
+/* 0 - data successfully found in EEPROM. */
+/* 500 - no data/records available in EEPROM. */
+/* result_ee[1] - an address of the last record of ee_data type */
+/* in EEPROM. */
+/* */
+/* version: 1.1 (01/27/2006) */
+/* */
+/* constants defined in LPC2k_ee.h used in this function: */
+/* NO_RECORDS_AVAILABLE - EEPROM is empty/no records identifiable */
+/* with a record identifier (EE_REC_ID) found */
+/* EE_ADR_L - micro's Flash address from where EEPROM begins */
+/* EE_REC_SIZE - size (in bytes) of a ee_data structure */
+/* */
+/* description: */
+/* This function scans an EEPROM content looking for the last record */
+/* that can be identified with a record identifier (EE_REC_ID). When */
+/* such data is found, its address is passed as result_ee[1]. */
+/* */
+/* revision history: */
+/* - Rev. 1.0 had problems with accessing the last record in a fully */
+/* occupied EEPROM. Rev. 1.1 fixes this. */
+/* */
+/************************************************************************/
+void ee_read_page(unsigned int addr)
+{
+ memcpy(data_page, (unsigned int *)addr, sizeof(unsigned int)*64);
+}
+
+
+//////////////////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////////////////
+
+
+/*
+ CAN FESTIVAL interface functions
+*/
+
+
+int _get_data_len(int type)
+{
+ int len = 0; /* number of bytes */
+ switch(type)
+ {
+ case boolean:
+ len = 1;
+ break;
+
+ case int8:
+ case uint8:
+ len = 1;
+ break;
+ case int16:
+ case uint16:
+ len = 2;
+ break;
+ case int24:
+ case uint24:
+ len = 3;
+ break;
+ case int32:
+ case uint32:
+ case real32:
+ len = 4;
+ break;
+ case int40:
+ case uint40:
+ len = 5;
+ break;
+ case int48:
+ case uint48:
+ len = 6;
+ break;
+ case int56:
+ case uint56:
+ len = 7;
+ break;
+ case int64:
+ case uint64:
+ case real64:
+ len = 8;
+ break;
+#if 0
+/* TO DO */
+ case visible_string:
+ case octet_string:
+ case unicode_string:
+ case time_of_day:
+ case time_difference:
+#endif
+ }
+
+ return len;
+}
+
+
+