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
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143
avrprog.c
143
avrprog.c
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@ -55,7 +55,6 @@
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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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@ -105,21 +104,11 @@ struct avrpart {
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struct avrpart parts[] = {
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{ "AT90S8515", "8515", 8192, 512 },
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{ "AT90S2313", "2313", 2048, 128 }
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{ "AT90S2313", "2313", 2048, 128 },
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{ "AT90S1200", "1200", 1200, 64 }
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};
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/*
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* variable declarations required for getopt()
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*/
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char *optarg;
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int optind;
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int optopt;
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int opterr;
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int optreset;
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/*
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* set 'get' and 'set' appropriately for subsequent passage to ioctl()
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* to get/set the specified PPI registers.
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@ -250,18 +239,24 @@ int ppi_pulse ( int fd, int reg, int bit )
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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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/*
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* read the result bit (it is either valid from a previous clock
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* pulse or it is ignored in the current context)
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*/
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r = ppi_get(fd, PPISTATUS, AVR_DATA);
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/* set the data input line as desired */
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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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/*
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* pulse the clock line, clocking in the MOSI data, and clocking out
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* the next result bit
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*/
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ppi_pulse(fd, PPIDATA, AVR_CLOCK);
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return r;
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@ -586,7 +581,7 @@ void avr_powerdown ( int fd )
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/*
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* initialize the AVR device and prepare it to accept commands
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*/
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int avr_initialize ( int fd )
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int avr_initialize ( int fd, struct avrpart * p )
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{
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int rc;
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int tries;
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@ -600,24 +595,33 @@ int avr_initialize ( int fd )
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usleep(20000); /* 20 ms */
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/*
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* enable programming mode, try up to 32 times in order to possibly
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* get back into sync with the chip if we are out of sync.
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* Enable programming mode. If we are programming an AT90S1200, we
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* can only issue the command and hope it worked. If we are using
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* one of the other chips, the chip will echo 0x53 when issuing the
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* third byte of the command. In this case, try up to 32 times in
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* order to possibly get back into sync with the chip if we are out
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* of sync.
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*/
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tries = 0;
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do {
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rc = avr_program_enable ( fd );
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if (rc == 0)
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break;
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ppi_pulse(fd, PPIDATA, AVR_CLOCK);
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tries++;
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} while (tries < 32);
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if (strcmp(p->partdesc, "AT90S1200")==0) {
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avr_program_enable ( fd );
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}
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else {
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tries = 0;
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do {
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rc = avr_program_enable ( fd );
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if (rc == 0)
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break;
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ppi_pulse(fd, PPIDATA, AVR_CLOCK);
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tries++;
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} while (tries < 32);
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/*
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* can't sync with the device, maybe it's not attached?
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*/
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if (tries == 32) {
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fprintf ( stderr, "%s: AVR device not responding\n", progname );
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return -1;
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/*
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* can't sync with the device, maybe it's not attached?
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*/
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if (tries == 32) {
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fprintf ( stderr, "%s: AVR device not responding\n", progname );
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return -1;
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}
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}
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return 0;
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@ -654,6 +658,8 @@ int ppi_sense_test ( int fd )
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*/
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void usage ( void )
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{
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int i;
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fprintf ( stderr,
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"\nUsage: %s [-r] [-e|-f] [-u InputFile|-o Outputfile]\n"
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"\n"
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@ -661,11 +667,21 @@ void usage ( void )
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" -r : erase the flash and eeprom (required before programming)\n"
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" -e : select eeprom for reading or writing\n"
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" -f : select flash for reading or writing\n"
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" -p Part : 8515 or 2313\n"
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" -p Part : see below for valid parts\n"
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" -u InputFile : write data from this file\n"
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" -o OutputFile : write data to this file\n"
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" -F : override invalid device signature check\n"
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" -s : read device signature bytes\n"
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"\n",
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progname );
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fprintf(stderr, " Valid Parts for the -p option are:\n");
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for (i=0; i<sizeof(parts)/sizeof(parts[0]); i++) {
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fprintf(stderr, " \"%s\" = %s\n",
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parts[i].optiontag, parts[i].partdesc);
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}
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fprintf(stderr, "\n");
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}
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@ -678,7 +694,6 @@ int main ( int argc, char * argv [] )
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int rc, exitrc;
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int i;
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unsigned char * buf;
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unsigned char sig[4];
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int ch;
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int iofd;
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int flash, eeprom, doread, erase, dosig;
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@ -687,6 +702,9 @@ int main ( int argc, char * argv [] )
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char * inputf;
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char * p1, * p2;
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struct avrpart * p;
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unsigned char sig[4], nulldev[4];
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int len;
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int ovsigck;
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iofd = -1;
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outputf = NULL;
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@ -697,6 +715,7 @@ int main ( int argc, char * argv [] )
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erase = 0;
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dosig = 0;
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p = NULL;
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ovsigck = 0;
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progname = rindex(argv[0],'/');
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if (progname)
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@ -740,7 +759,7 @@ int main ( int argc, char * argv [] )
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/*
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* process command line arguments
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*/
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while ((ch = getopt(argc,argv,"?efo:p:rsu:")) != -1) {
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while ((ch = getopt(argc,argv,"?efFo:p:rsu:")) != -1) {
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switch (ch) {
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case 'e': /* select eeprom memory */
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if (flash) {
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@ -749,12 +768,6 @@ int main ( int argc, char * argv [] )
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}
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eeprom = 1;
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break;
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case 'r': /* perform a chip erase */
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erase = 1;
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break;
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case 's': /* read out the signature bytes */
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dosig = 1;
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break;
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case 'f': /* select flash memory */
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if (eeprom) {
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fprintf(stderr,"%s: -e and -f are incompatible\n", progname);
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@ -762,6 +775,9 @@ int main ( int argc, char * argv [] )
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}
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flash = 1;
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break;
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case 'F': /* override invalid signature check */
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ovsigck = 1;
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break;
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case 'o': /* specify output file */
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if (inputf) {
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fprintf(stderr,"%s: -o and -u are incompatible\n", progname);
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@ -801,6 +817,12 @@ int main ( int argc, char * argv [] )
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return 1;
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}
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break;
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case 'r': /* perform a chip erase */
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erase = 1;
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break;
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case 's': /* read out the signature bytes */
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dosig = 1;
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break;
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case 'u': /* specify input (upload) file */
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if (outputf) {
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fprintf(stderr,"%s: -o and -u are incompatible\n", progname);
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@ -827,7 +849,6 @@ int main ( int argc, char * argv [] )
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}
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}
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if (p == NULL) {
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fprintf(stderr,
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"%s: No AVR part has been specified, use \"-p Part\"\n\n"
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@ -875,7 +896,7 @@ int main ( int argc, char * argv [] )
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/*
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* initialize the chip in preperation for accepting commands
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*/
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rc = avr_initialize(fd);
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rc = avr_initialize(fd,p);
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if (rc < 0) {
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fprintf ( stderr, "%s: initialization failed, rc=%d\n", progname, rc );
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exitrc = 1;
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@ -885,6 +906,36 @@ int main ( int argc, char * argv [] )
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fprintf ( stderr, "%s: AVR device initialized and ready to accept instructions\n",
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progname );
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/*
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* Let's read the signature bytes to make sure there is at least a
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* chip on the other end that is responding correctly. A check
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* against 0xffffffff should ensure that the signature bytes are
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* valid.
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*/
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avr_signature(fd, sig);
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fprintf(stderr, "%s: Device signature = 0x", progname);
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for (i=0; i<4; i++)
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fprintf(stderr, "%02x", sig[i]);
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fprintf(stderr, "\n");
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memset(nulldev,0xff,4);
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if (memcmp(sig,nulldev,4)==0) {
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len = strlen(progname) + 2;
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for (i=0; i<len; i++)
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buf[i] = ' ';
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buf[i] = 0;
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fprintf(stderr,
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"%s: Yikes! Invalid device signature.\n", progname);
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if (!ovsigck) {
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fprintf(stderr,
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"%sDouble check connections and try again, or use -F to override\n"
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"%sthis check.\n\n",
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buf, buf );
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exit(1);
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}
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}
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fprintf(stderr, "\n");
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if (erase) {
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/*
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@ -893,7 +944,7 @@ int main ( int argc, char * argv [] )
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*/
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fprintf(stderr, "%s: erasing chip\n", progname );
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avr_chip_erase(fd);
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avr_initialize(fd);
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avr_initialize(fd,p);
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fprintf(stderr, "%s: done.\n", progname );
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}
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@ -905,7 +956,7 @@ int main ( int argc, char * argv [] )
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fprintf(stderr, "%s: reading signature bytes: ", progname );
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avr_signature(fd, sig);
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for (i=0; i<4; i++)
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fprintf(stderr, "0x%02x ", sig[i]);
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fprintf(stderr, "%02x", sig[i]);
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fprintf(stderr, "\n");
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}
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