This commit was generated by cvs2svn to compensate for changes in r2,
which included commits to RCS files with non-trunk default branches. git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@3 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
Brian S. Dean
commit
52ae174073
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@ -0,0 +1,16 @@
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#
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# $Id$
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#
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TARGET = avrprog
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all : ${TARGET}
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CFLAGS = -Wall
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${TARGET} : avrprog.c
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${CC} ${CFLAGS} -o ${TARGET} avrprog.c
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clean :
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rm -f *.o ${TARGET} *~
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@ -0,0 +1,716 @@
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/*
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* Copyright 2000, Brian Dean
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* All Rights Reserved.
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*/
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/* $Id$ */
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/*
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* Code to program an Atmel AVR device using the parallel port.
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*
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* Make the following connections:
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*
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* Pin 2 -> PB7(SCK) CLOCK IN (data bit 0)
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* Pin 3 -> PB5(MOSI) Instruction input (data bit 1)
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* Pin 4 -> /RESET (data bit 2)
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* Pin 10 <- PB6(MISO) Data out (status bit 6)
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <stdarg.h>
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#include <sys/stat.h>
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#include </sys/dev/ppbus/ppi.h>
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#include </sys/dev/ppbus/ppbconf.h>
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#define PARALLEL "/dev/ppi0"
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char * progname;
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#define AVR_CLOCK 0x01 /* bit 0 of data register */
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#define AVR_INSTR 0x02 /* bit 1 of data register */
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#define AVR_RESET 0x04 /* bit 2 of data register */
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#define AVR_DATA 0x40 /* bit 6 of status register */
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enum {
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PPIDATA,
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PPICTRL,
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PPISTATUS
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};
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enum {
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AVR_EEPROM,
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AVR_FLASH,
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AVR_FLASH_LO,
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AVR_FLASH_HI
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};
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int dprintf ( FILE * f, char * format, ... )
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{
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#if DEBUG
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va_list ap;
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int rc;
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va_start(ap,format);
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rc = vfprintf(f,format,ap);
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va_end(ap);
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return rc;
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#else
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return 0;
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#endif
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}
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|
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int ppi_getops ( int reg, unsigned long * get, unsigned long * set )
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{
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switch (reg) {
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case PPIDATA:
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*set = PPISDATA;
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*get = PPIGDATA;
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break;
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case PPICTRL:
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*set = PPISCTRL;
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*get = PPIGCTRL;
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break;
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case PPISTATUS:
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*set = PPISSTATUS;
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*get = PPIGSTATUS;
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break;
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default:
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fprintf ( stderr, "%s: avr_set(): invalid register=%d\n",
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progname, reg );
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return -1;
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break;
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}
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return 0;
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}
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|
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|
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int ppi_set ( int fd, int reg, int bit )
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{
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unsigned char v;
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unsigned long get, set;
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int rc;
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|
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rc = ppi_getops ( reg, &get, &set );
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if (rc)
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return -1;
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|
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ioctl(fd, get, &v);
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v |= bit;
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ioctl(fd, set, &v);
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|
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return 0;
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}
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|
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|
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int ppi_clr ( int fd, int reg, int bit )
|
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{
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unsigned char v;
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unsigned long get, set;
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int rc;
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|
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rc = ppi_getops ( reg, &get, &set );
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if (rc)
|
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return -1;
|
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|
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ioctl(fd, get, &v);
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v &= ~bit;
|
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ioctl(fd, set, &v);
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|
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return 0;
|
||||
}
|
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|
||||
|
||||
int ppi_get ( int fd, int reg, int bit )
|
||||
{
|
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unsigned char v;
|
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unsigned long get, set;
|
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int rc;
|
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|
||||
rc = ppi_getops ( reg, &get, &set );
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if (rc)
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return -1;
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|
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ioctl(fd, get, &v);
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v &= bit;
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|
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return (v == bit);
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}
|
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|
||||
|
||||
int ppi_toggle ( int fd, int reg, int bit )
|
||||
{
|
||||
unsigned char v;
|
||||
unsigned long get, set;
|
||||
int rc;
|
||||
|
||||
rc = ppi_getops ( reg, &get, &set );
|
||||
if (rc)
|
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return -1;
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ioctl(fd, get, &v);
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v |= bit;
|
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ioctl(fd, set, &v);
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|
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v &= ~bit;
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ioctl(fd, set, &v);
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return 0;
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}
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|
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int avr_txrx_bit ( int fd, int bit )
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{
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unsigned char d;
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int r;
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ioctl(fd, PPIGDATA, &d);
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r = ppi_get(fd, PPISTATUS, AVR_DATA);
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if (bit)
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ppi_set(fd, PPIDATA, AVR_INSTR);
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else
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ppi_clr(fd, PPIDATA, AVR_INSTR);
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ppi_toggle(fd, PPIDATA, AVR_CLOCK);
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return r;
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}
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|
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unsigned char avr_txrx ( int fd, unsigned char byte )
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{
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int i;
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unsigned char r, b, rbyte;
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rbyte = 0;
|
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for (i=0; i<8; i++) {
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b = (byte >> (7-i)) & 0x01;
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r = avr_txrx_bit ( fd, b );
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rbyte = rbyte | (r << (7-i));
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}
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return rbyte;
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}
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|
||||
|
||||
unsigned char avr_read_byte ( int fd, unsigned short addr, int memtype )
|
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{
|
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unsigned char r;
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|
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switch (memtype) {
|
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case AVR_FLASH_LO:
|
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avr_txrx(fd, 0x20);
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break;
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case AVR_FLASH_HI:
|
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avr_txrx(fd, 0x28);
|
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break;
|
||||
case AVR_EEPROM:
|
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avr_txrx(fd, 0xa0);
|
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addr &= 0x7f;
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break;
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default:
|
||||
fprintf(stderr, "%s: avr_read_byte(); internal error: invalid memtype=%d\n",
|
||||
progname, memtype);
|
||||
exit(1);
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break;
|
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}
|
||||
|
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avr_txrx(fd, addr >> 8); /* high order bits of address */
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avr_txrx(fd, addr & 0x0ff); /* low order bits of address */
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r = avr_txrx(fd, 0); /* don't care */
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||||
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return r;
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}
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int avr_read ( int fd, int memtype, unsigned start, unsigned n,
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unsigned char * buf, int bufsize )
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{
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unsigned char rbyte;
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unsigned short data;
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unsigned short end, i, bi;
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switch (memtype) {
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case AVR_FLASH :
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case AVR_EEPROM :
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break;
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default:
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fprintf(stderr, "%s: avr_read(); internal error: invalid memtype=%d\n",
|
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progname, memtype);
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exit(1);
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break;
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}
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end = start+n;
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bi = 0;
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for (i=start; i<end; i++) {
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if (memtype == AVR_FLASH) {
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rbyte = avr_read_byte(fd, i, AVR_FLASH_LO); /* flash low byte */
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fprintf ( stderr, " \r%4u 0x%02x", i, rbyte );
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data = rbyte;
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if (bi < bufsize) {
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buf[bi++] = rbyte;
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}
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rbyte = avr_read_byte(fd, i, AVR_FLASH_HI); /* flash high byte */
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fprintf ( stderr, " 0x%02x", rbyte );
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data |= (rbyte << 8);
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if (bi < bufsize) {
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buf[bi++] = rbyte;
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}
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}
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else {
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rbyte = avr_read_byte(fd, i, memtype); /* eeprom byte */
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fprintf ( stderr, " \r%4u 0x%02x", i, rbyte );
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if (bi < bufsize) {
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buf[bi++] = rbyte;
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}
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}
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}
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fprintf ( stderr, "\n" );
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return 0;
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}
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|
||||
|
||||
int avr_write_byte ( int fd, int memtype, unsigned short addr, unsigned char data )
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{
|
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unsigned char r;
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int ready;
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int tries;
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|
||||
switch (memtype) {
|
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case AVR_FLASH_LO:
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avr_txrx(fd, 0x40);
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break;
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case AVR_FLASH_HI:
|
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avr_txrx(fd, 0x48);
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break;
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case AVR_EEPROM:
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avr_txrx(fd, 0xc0);
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addr &= 0x7f;
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break;
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default:
|
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fprintf(stderr, "%s: avr_write_byte(); internal error: invalid memtype=%d\n",
|
||||
progname, memtype);
|
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exit(1);
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||||
break;
|
||||
}
|
||||
|
||||
avr_txrx(fd, addr >> 8); /* high order bits of address */
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avr_txrx(fd, addr & 0x0ff); /* low order bits of address */
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avr_txrx(fd, data); /* data */
|
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tries = 0;
|
||||
ready = 0;
|
||||
while (!ready) {
|
||||
usleep(5000); /* flash write delay */
|
||||
r = avr_read_byte ( fd, addr, memtype );
|
||||
if (data == 0x7f) {
|
||||
usleep(20000);
|
||||
ready = 1;
|
||||
}
|
||||
else if (r == data) {
|
||||
ready = 1;
|
||||
}
|
||||
tries++;
|
||||
if (!ready && tries > 10) {
|
||||
fprintf(stderr, "**" );
|
||||
ready = 1;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
int avr_write ( int fd, int memtype, unsigned start,
|
||||
unsigned char * buf, int size )
|
||||
{
|
||||
unsigned char data;
|
||||
unsigned short end, i, bi;
|
||||
|
||||
switch (memtype) {
|
||||
case AVR_FLASH :
|
||||
end = start+size/2;
|
||||
break;
|
||||
case AVR_EEPROM :
|
||||
end = start+size;
|
||||
break;
|
||||
default:
|
||||
fprintf(stderr, "%s: avr_write(); internal error: invalid memtype=%d\n",
|
||||
progname, memtype);
|
||||
exit(1);
|
||||
break;
|
||||
}
|
||||
|
||||
bi = 0;
|
||||
|
||||
for (i=start; i<end; i++) {
|
||||
if (memtype == AVR_FLASH) {
|
||||
/* low byte */
|
||||
data = buf[bi++];
|
||||
avr_write_byte(fd, AVR_FLASH_LO, i, data );
|
||||
fprintf ( stderr, " \r%4u 0x%02x", i, data );
|
||||
|
||||
/* high byte */
|
||||
data = buf[bi++];
|
||||
avr_write_byte(fd, AVR_FLASH_HI, i, data );
|
||||
fprintf ( stderr, " 0x%02x", data );
|
||||
}
|
||||
else {
|
||||
data = buf[bi++];
|
||||
avr_write_byte(fd, memtype, i, data );
|
||||
fprintf ( stderr, " \r%4u 0x%02x", i, data );
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
fprintf ( stderr, "\n" );
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
int avr_program_enable ( int fd )
|
||||
{
|
||||
unsigned char data[4] = {0xac, 0x53, 0x00, 0x00};
|
||||
unsigned char byte, rbyte;
|
||||
int avrok;
|
||||
int i;
|
||||
|
||||
avrok = 0;
|
||||
|
||||
for (i=0; i<4; i++) {
|
||||
byte = data[i];
|
||||
rbyte = avr_txrx ( fd, byte );
|
||||
if (i == 2) {
|
||||
if (rbyte == data[1])
|
||||
avrok = 1;
|
||||
}
|
||||
}
|
||||
|
||||
if (!avrok)
|
||||
return -1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
int avr_chip_erase ( int fd )
|
||||
{
|
||||
unsigned char data[4] = {0xac, 0x80, 0x00, 0x00};
|
||||
int i;
|
||||
|
||||
for (i=0; i<4; i++) {
|
||||
avr_txrx ( fd, data[i] );
|
||||
}
|
||||
|
||||
usleep(20000);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
int avr_initialize ( int fd )
|
||||
{
|
||||
int rc;
|
||||
int tries;
|
||||
|
||||
ppi_clr(fd, PPIDATA, AVR_CLOCK);
|
||||
ppi_clr(fd, PPIDATA, AVR_RESET);
|
||||
ppi_toggle(fd, PPIDATA, AVR_RESET);
|
||||
|
||||
usleep(20000); /* 20 ms */
|
||||
|
||||
tries = 0;
|
||||
do {
|
||||
rc = avr_program_enable ( fd );
|
||||
if (rc == 0)
|
||||
break;
|
||||
ppi_toggle(fd, PPIDATA, AVR_CLOCK);
|
||||
tries++;
|
||||
} while (tries < 32);
|
||||
if (tries == 32) {
|
||||
fprintf ( stderr, "%s: AVR device not responding\n", progname );
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
int ppi_sense_test ( int fd )
|
||||
{
|
||||
unsigned char v, pv;
|
||||
|
||||
pv = 1;
|
||||
do {
|
||||
v = ppi_get(fd, PPISTATUS, AVR_DATA);
|
||||
if (v != pv) {
|
||||
fprintf ( stderr, "PPISTATUS bit = %d\n", v );
|
||||
}
|
||||
pv = v;
|
||||
} while(1);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* vars for getopt() */
|
||||
char *optarg;
|
||||
int optind;
|
||||
int optopt;
|
||||
int opterr;
|
||||
int optreset;
|
||||
|
||||
|
||||
void usage ( void )
|
||||
{
|
||||
fprintf ( stderr,
|
||||
"\nUsage: %s [-r] [-e|-f] [-u InputFile|-o Outputfile]\n"
|
||||
"\n"
|
||||
" Available Options:\n"
|
||||
" -r : erase the flash and eeprom (required before programming)\n"
|
||||
" -e : select eeprom for reading or writing\n"
|
||||
" -f : select flash for reading or writing\n"
|
||||
" -u InputFile : write data from this file\n"
|
||||
" -o OutputFile : write data to this file\n"
|
||||
"\n",
|
||||
progname );
|
||||
}
|
||||
|
||||
|
||||
int main ( int argc, char * argv [] )
|
||||
{
|
||||
int fd;
|
||||
int rc;
|
||||
unsigned char buf[2048];
|
||||
int ch;
|
||||
int iofd;
|
||||
int flash, eeprom, doread, erase;
|
||||
int size;
|
||||
char * outputf;
|
||||
char * inputf;
|
||||
|
||||
iofd = -1;
|
||||
outputf = NULL;
|
||||
inputf = NULL;
|
||||
doread = 1;
|
||||
eeprom = 0;
|
||||
flash = 0;
|
||||
erase = 0;
|
||||
|
||||
progname = rindex(argv[0],'/');
|
||||
if (progname)
|
||||
progname++;
|
||||
else
|
||||
progname = argv[0];
|
||||
|
||||
while ((ch = getopt(argc,argv,"?efo:ru:")) != -1) {
|
||||
switch (ch) {
|
||||
case 'e':
|
||||
if (flash) {
|
||||
fprintf(stderr,"%s: -e and -f are incompatible\n", progname);
|
||||
return 1;
|
||||
}
|
||||
eeprom = 1;
|
||||
break;
|
||||
case 'r':
|
||||
erase = 1;
|
||||
break;
|
||||
case 'f':
|
||||
if (eeprom) {
|
||||
fprintf(stderr,"%s: -e and -f are incompatible\n", progname);
|
||||
return 1;
|
||||
}
|
||||
flash = 1;
|
||||
break;
|
||||
case 'o':
|
||||
if (inputf) {
|
||||
fprintf(stderr,"%s: -o and -u are incompatible\n", progname);
|
||||
return 1;
|
||||
}
|
||||
doread = 1;
|
||||
outputf = optarg;
|
||||
if (strcmp(outputf,"-")==0) {
|
||||
iofd = fileno(stdout);
|
||||
}
|
||||
else {
|
||||
iofd = open ( outputf, O_WRONLY|O_CREAT|O_TRUNC,
|
||||
S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH);
|
||||
if (iofd < 0) {
|
||||
fprintf(stderr, "%s: can't open output file \"%s\": %s\n",
|
||||
progname, outputf, strerror(errno));
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
break;
|
||||
case 'u':
|
||||
if (outputf) {
|
||||
fprintf(stderr,"%s: -o and -u are incompatible\n", progname);
|
||||
return 1;
|
||||
}
|
||||
doread = 0;
|
||||
inputf = optarg;
|
||||
iofd = open ( inputf, O_RDONLY, 0);
|
||||
if (iofd < 0) {
|
||||
fprintf(stderr, "%s: can't open input file \"%s\": %s\n",
|
||||
progname, inputf, strerror(errno));
|
||||
return 1;
|
||||
}
|
||||
break;
|
||||
case '?':
|
||||
usage();
|
||||
return 1;
|
||||
break;
|
||||
default:
|
||||
fprintf(stderr, "%s: invalid option -%c\n", progname, ch);
|
||||
usage();
|
||||
return 1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
fd = open ( PARALLEL, O_RDWR );
|
||||
if (fd < 0) {
|
||||
fprintf ( stderr, "%s: can't open device \"%s\": %s\n",
|
||||
progname, PARALLEL, strerror(errno) );
|
||||
return 1;
|
||||
}
|
||||
|
||||
fprintf ( stderr, "%s: initializing\n", progname );
|
||||
rc = avr_initialize(fd);
|
||||
if (rc < 0) {
|
||||
fprintf ( stderr, "%s: initialization failed, rc=%d\n", progname, rc );
|
||||
return 1;
|
||||
}
|
||||
|
||||
fprintf ( stderr, "%s: AVR device initialized and ready to accept instructions\n",
|
||||
progname );
|
||||
|
||||
if (erase) {
|
||||
fprintf(stderr, "%s: erasing chip\n", progname );
|
||||
avr_chip_erase(fd);
|
||||
avr_initialize(fd);
|
||||
fprintf(stderr, "%s: done.\n", progname );
|
||||
}
|
||||
|
||||
if (iofd < 0) {
|
||||
fprintf(stderr, "%s: you must specify an input or an output file\n",
|
||||
progname);
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (!(eeprom||flash)) {
|
||||
fprintf(stderr,
|
||||
"%s: please specify either the eeprom (-e) or the flash (-f) memory\n",
|
||||
progname);
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (doread) {
|
||||
/*
|
||||
* read device memory
|
||||
*/
|
||||
if (flash) {
|
||||
size = 2048;
|
||||
fprintf ( stderr, "%s: reading flash memory:\n", progname );
|
||||
rc = avr_read ( fd, AVR_FLASH, 0, size/2, buf, size );
|
||||
if (rc) {
|
||||
fprintf ( stderr, "%s: failed to read all of flash memory, rc=%d\n",
|
||||
progname, rc );
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
else if (eeprom) {
|
||||
size = 128;
|
||||
fprintf ( stderr, "%s: reading eeprom memory:\n", progname );
|
||||
rc = avr_read ( fd, AVR_EEPROM, 0, size, buf, size );
|
||||
if (rc) {
|
||||
fprintf ( stderr, "%s: failed to read all of eeprom memory, rc=%d\n",
|
||||
progname, rc );
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
rc = write ( iofd, buf, size );
|
||||
if (rc < 0) {
|
||||
fprintf(stderr, "%s: write error: %s\n", progname, strerror(errno));
|
||||
return 1;
|
||||
}
|
||||
else if (rc != size) {
|
||||
fprintf(stderr, "%s: wrote only %d bytes of the expected %d\n",
|
||||
progname, rc, size);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
else {
|
||||
/*
|
||||
* write device memory
|
||||
*/
|
||||
if (flash) {
|
||||
size = 2048;
|
||||
}
|
||||
else if (eeprom) {
|
||||
size = 128;
|
||||
}
|
||||
|
||||
/* read in the data file */
|
||||
rc = read(iofd, buf, size);
|
||||
if (rc < 0) {
|
||||
fprintf(stderr, "%s: read error from \"%s\": %s\n",
|
||||
progname, inputf, strerror(errno));
|
||||
return 1;
|
||||
}
|
||||
else if (rc != size) {
|
||||
fprintf(stderr, "%s: read only %d bytes of the expected %d from \"%s\"\n",
|
||||
progname, rc, size, inputf);
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (flash) {
|
||||
fprintf ( stderr, "%s: writing flash memory:\n", progname );
|
||||
rc = avr_write ( fd, AVR_FLASH, 0, buf, size );
|
||||
if (rc) {
|
||||
fprintf ( stderr, "%s: failed to write flash memory, rc=%d\n",
|
||||
progname, rc );
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
else if (eeprom) {
|
||||
fprintf ( stderr, "%s: writing eeprom memory:\n", progname );
|
||||
rc = avr_write ( fd, AVR_EEPROM, 0, buf, size );
|
||||
if (rc) {
|
||||
fprintf ( stderr, "%s: failed to write eeprom memory, rc=%d\n",
|
||||
progname, rc );
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
close(fd);
|
||||
close(iofd);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue