--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/drivers/ecos_lpc2138_sja1000/lpc2138.c Wed May 10 16:59:40 2006 +0200
@@ -0,0 +1,373 @@
+/*
+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);
+}
+
+
+
+