/*
This file is part of CanFestival, a library implementing CanOpen Stack.
Author: Christian Fortin (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
*/
#include <stdio.h>
#include <stdlib.h>
#include "applicfg.h"
// #include "objdictdef.h"
#include "lpc2138_pinout.h"
#include "lpc2138_defs.h"
#include "lpc2138.h"
#define IAP_LOCATION 0x7ffffff1
// define a page of data of 256 bytes
//
short data_len; /* 0 to 256 bytes */
unsigned int *data_page = NULL;
unsigned int data_addr;
// 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;
/***************************************************************************************/
void lpc2138_pinsel_set(int pin, LPC2138_PORT port, int size, int func)
{
int i;
for (i = 0; i < size; pin++, i++)
{
/* 2 bits par broche. */
int shift = (pin - ((pin < 16) ? 0 : 16)) << 1;
REG32_ADDR pinsel = (port == 1) ?
(REG32_ADDR) P1_PINSEL2_ADDR : ((pin < 16) ?
(REG32_ADDR) P0_PINSEL0_ADDR : (REG32_ADDR) P0_PINSEL1_ADDR);
*pinsel = (*pinsel & ~(BITMASK_2 << shift)) | (func << shift);
}
}
void lpc2138_pinsel_clear()
{
P0_PINSEL0 = 0x00000000;
P0_PINSEL1 = 0x00000000;
P1_PINSEL2 = 0x00000000;
}
int lpc2138_printf(void)
{
return lpc2138_fprintf(stdout);
}
int lpc2138_printf_pins(void)
{
return lpc2138_fprintf_pins(stdout);
}
int lpc2138_fprintf(FILE *stream)
{
return fprintf(stream,
"[p0=0x%08X,p0_iodir=0x%08X,p0_pinsel0=0x%08X,p0_pinsel1=0x%08X," \
"p1=0x%08X,p1_iodir=0x%08X,p1_pinsel2=0x%08X]",
P0_IOPIN, P0_IODIR, P0_PINSEL0, P0_PINSEL1,
P1_IOPIN, P1_IODIR, P1_PINSEL2);
}
int lpc2138_fprintf_pins(FILE *stream)
{
return fprintf(stream,
"[cs_s1d13706=0x%X," \
"cs_sja1000=0x%X," \
"wait=0x%X," \
"bhe=0x%X," \
"interrupt_sja1000=0x%X," \
"redgreenled=0x%X," \
"ale=0x%X," \
"rd=0x%X," \
"wr=0x%X," \
"data=0x%X," \
"addresses=0x%X]",
lpc2138_cs_s1d13706_get(),
lpc2138_cs_sja1000_get(),
lpc2138_wait_get(),
lpc2138_bhe_get(),
lpc2138_redgreenled_get(),
lpc2138_interrupt_sja1000_get(),
lpc2138_ale_get(),
lpc2138_rd_get(),
lpc2138_wr_get(),
lpc2138_data_get(),
lpc2138_addresses_get());
}
/*
SJA1000 interface
*/
unsigned char sja1000_read(unsigned char addr8)
{
unsigned char data;
lpc2138_data_set_mode(LPC2138_MODE_OUTPUT);
lpc2138_ale_set(1);
lpc2138_data_set(addr8);
lpc2138_ale_set(0);
lpc2138_data_set_mode(LPC2138_MODE_INPUT);
lpc2138_cs_sja1000_set(0);
lpc2138_rd_set(0);
data = lpc2138_data_get();
data = lpc2138_data_get();
lpc2138_rd_set(1);
lpc2138_cs_sja1000_set(1);
lpc2138_data_set_mode(LPC2138_MODE_OUTPUT);
return data;
}
void sja1000_write(unsigned char addr8, unsigned char data)
{
lpc2138_data_set_mode(LPC2138_MODE_OUTPUT);
lpc2138_data_set(addr8);
lpc2138_ale_set(1);
lpc2138_ale_set(0);
lpc2138_cs_sja1000_set(0);
lpc2138_wr_set(0);
lpc2138_data_set(data);
lpc2138_wr_set(1);
lpc2138_cs_sja1000_set(1);
}
/*
FLASH interface
*/
/************************************************************************/
/* */
/* 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 iat_flash_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 iat_flash_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 iat_flash_read_page(unsigned int addr)
{
memcpy(data_page, (unsigned int *)addr, sizeof(unsigned int)*64);
}