Update after receiving some good feedback from Joerg Wunsch. We

should now be able to program AT90S1200's.


git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@16 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
bsd 2000-12-31 02:24:50 +00:00
parent 12a7e8514a
commit 8f1f91601e
1 changed files with 97 additions and 46 deletions

115
avrprog.c
View File

@ -55,7 +55,6 @@
#include <stdarg.h>
#include <sys/stat.h>
#include </sys/dev/ppbus/ppi.h>
#include </sys/dev/ppbus/ppbconf.h>
#define PARALLEL "/dev/ppi0"
@ -105,21 +104,11 @@ struct avrpart {
struct avrpart parts[] = {
{ "AT90S8515", "8515", 8192, 512 },
{ "AT90S2313", "2313", 2048, 128 }
{ "AT90S2313", "2313", 2048, 128 },
{ "AT90S1200", "1200", 1200, 64 }
};
/*
* variable declarations required for getopt()
*/
char *optarg;
int optind;
int optopt;
int opterr;
int optreset;
/*
* set 'get' and 'set' appropriately for subsequent passage to ioctl()
* to get/set the specified PPI registers.
@ -250,18 +239,24 @@ int ppi_pulse ( int fd, int reg, int bit )
*/
int avr_txrx_bit ( int fd, int bit )
{
unsigned char d;
int r;
ioctl(fd, PPIGDATA, &d);
/*
* read the result bit (it is either valid from a previous clock
* pulse or it is ignored in the current context)
*/
r = ppi_get(fd, PPISTATUS, AVR_DATA);
/* set the data input line as desired */
if (bit)
ppi_set(fd, PPIDATA, AVR_INSTR);
else
ppi_clr(fd, PPIDATA, AVR_INSTR);
/*
* pulse the clock line, clocking in the MOSI data, and clocking out
* the next result bit
*/
ppi_pulse(fd, PPIDATA, AVR_CLOCK);
return r;
@ -586,7 +581,7 @@ void avr_powerdown ( int fd )
/*
* initialize the AVR device and prepare it to accept commands
*/
int avr_initialize ( int fd )
int avr_initialize ( int fd, struct avrpart * p )
{
int rc;
int tries;
@ -600,9 +595,17 @@ int avr_initialize ( int fd )
usleep(20000); /* 20 ms */
/*
* enable programming mode, try up to 32 times in order to possibly
* get back into sync with the chip if we are out of sync.
* Enable programming mode. If we are programming an AT90S1200, we
* can only issue the command and hope it worked. If we are using
* one of the other chips, the chip will echo 0x53 when issuing the
* third byte of the command. In this case, try up to 32 times in
* order to possibly get back into sync with the chip if we are out
* of sync.
*/
if (strcmp(p->partdesc, "AT90S1200")==0) {
avr_program_enable ( fd );
}
else {
tries = 0;
do {
rc = avr_program_enable ( fd );
@ -619,6 +622,7 @@ int avr_initialize ( int fd )
fprintf ( stderr, "%s: AVR device not responding\n", progname );
return -1;
}
}
return 0;
}
@ -654,6 +658,8 @@ int ppi_sense_test ( int fd )
*/
void usage ( void )
{
int i;
fprintf ( stderr,
"\nUsage: %s [-r] [-e|-f] [-u InputFile|-o Outputfile]\n"
"\n"
@ -661,11 +667,21 @@ void usage ( void )
" -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"
" -p Part : 8515 or 2313\n"
" -p Part : see below for valid parts\n"
" -u InputFile : write data from this file\n"
" -o OutputFile : write data to this file\n"
" -F : override invalid device signature check\n"
" -s : read device signature bytes\n"
"\n",
progname );
fprintf(stderr, " Valid Parts for the -p option are:\n");
for (i=0; i<sizeof(parts)/sizeof(parts[0]); i++) {
fprintf(stderr, " \"%s\" = %s\n",
parts[i].optiontag, parts[i].partdesc);
}
fprintf(stderr, "\n");
}
@ -678,7 +694,6 @@ int main ( int argc, char * argv [] )
int rc, exitrc;
int i;
unsigned char * buf;
unsigned char sig[4];
int ch;
int iofd;
int flash, eeprom, doread, erase, dosig;
@ -687,6 +702,9 @@ int main ( int argc, char * argv [] )
char * inputf;
char * p1, * p2;
struct avrpart * p;
unsigned char sig[4], nulldev[4];
int len;
int ovsigck;
iofd = -1;
outputf = NULL;
@ -697,6 +715,7 @@ int main ( int argc, char * argv [] )
erase = 0;
dosig = 0;
p = NULL;
ovsigck = 0;
progname = rindex(argv[0],'/');
if (progname)
@ -740,7 +759,7 @@ int main ( int argc, char * argv [] )
/*
* process command line arguments
*/
while ((ch = getopt(argc,argv,"?efo:p:rsu:")) != -1) {
while ((ch = getopt(argc,argv,"?efFo:p:rsu:")) != -1) {
switch (ch) {
case 'e': /* select eeprom memory */
if (flash) {
@ -749,12 +768,6 @@ int main ( int argc, char * argv [] )
}
eeprom = 1;
break;
case 'r': /* perform a chip erase */
erase = 1;
break;
case 's': /* read out the signature bytes */
dosig = 1;
break;
case 'f': /* select flash memory */
if (eeprom) {
fprintf(stderr,"%s: -e and -f are incompatible\n", progname);
@ -762,6 +775,9 @@ int main ( int argc, char * argv [] )
}
flash = 1;
break;
case 'F': /* override invalid signature check */
ovsigck = 1;
break;
case 'o': /* specify output file */
if (inputf) {
fprintf(stderr,"%s: -o and -u are incompatible\n", progname);
@ -801,6 +817,12 @@ int main ( int argc, char * argv [] )
return 1;
}
break;
case 'r': /* perform a chip erase */
erase = 1;
break;
case 's': /* read out the signature bytes */
dosig = 1;
break;
case 'u': /* specify input (upload) file */
if (outputf) {
fprintf(stderr,"%s: -o and -u are incompatible\n", progname);
@ -827,7 +849,6 @@ int main ( int argc, char * argv [] )
}
}
if (p == NULL) {
fprintf(stderr,
"%s: No AVR part has been specified, use \"-p Part\"\n\n"
@ -875,7 +896,7 @@ int main ( int argc, char * argv [] )
/*
* initialize the chip in preperation for accepting commands
*/
rc = avr_initialize(fd);
rc = avr_initialize(fd,p);
if (rc < 0) {
fprintf ( stderr, "%s: initialization failed, rc=%d\n", progname, rc );
exitrc = 1;
@ -885,6 +906,36 @@ int main ( int argc, char * argv [] )
fprintf ( stderr, "%s: AVR device initialized and ready to accept instructions\n",
progname );
/*
* Let's read the signature bytes to make sure there is at least a
* chip on the other end that is responding correctly. A check
* against 0xffffffff should ensure that the signature bytes are
* valid.
*/
avr_signature(fd, sig);
fprintf(stderr, "%s: Device signature = 0x", progname);
for (i=0; i<4; i++)
fprintf(stderr, "%02x", sig[i]);
fprintf(stderr, "\n");
memset(nulldev,0xff,4);
if (memcmp(sig,nulldev,4)==0) {
len = strlen(progname) + 2;
for (i=0; i<len; i++)
buf[i] = ' ';
buf[i] = 0;
fprintf(stderr,
"%s: Yikes! Invalid device signature.\n", progname);
if (!ovsigck) {
fprintf(stderr,
"%sDouble check connections and try again, or use -F to override\n"
"%sthis check.\n\n",
buf, buf );
exit(1);
}
}
fprintf(stderr, "\n");
if (erase) {
/*
@ -893,7 +944,7 @@ int main ( int argc, char * argv [] )
*/
fprintf(stderr, "%s: erasing chip\n", progname );
avr_chip_erase(fd);
avr_initialize(fd);
avr_initialize(fd,p);
fprintf(stderr, "%s: done.\n", progname );
}
@ -905,7 +956,7 @@ int main ( int argc, char * argv [] )
fprintf(stderr, "%s: reading signature bytes: ", progname );
avr_signature(fd, sig);
for (i=0; i<4; i++)
fprintf(stderr, "0x%02x ", sig[i]);
fprintf(stderr, "%02x", sig[i]);
fprintf(stderr, "\n");
}