* pgm.[ch], main.c, par.c, avr910.c, butterfly.c, stk500.c:

Move save/restore-functionality into open/close.
	* par.c: open/close now saves/restores PPICTRL, too.
	* TODO: exitspecs don't work if RESET is in PPICTRL.


git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@407 81a1dc3b-b13d-400b-aceb-764788c761c2

ChangeLog

@@ -1,3 +1,10 @@
+2004-01-28  Jan-Hinnerk Reichert  <hinni@despammed.com>
+
+	* pgm.[ch], main.c, par.c, avr910.c, butterfly.c, stk500.c:
+	Move save/restore-functionality into open/close.
+	* par.c: open/close now saves/restores PPICTRL, too.
+	* TODO: exitspecs don't work if RESET is in PPICTRL.
+
 2004-01-26  Theodore A. Roth  <troth@openavr.org>
 
 	* configure.ac (AC_INIT): Post release version update.

avr910.c

@@ -247,22 +247,6 @@ static int avr910_initialize(PROGRAMMER * pgm, AVRPART * p)
 }
 
 
-static int avr910_save(PROGRAMMER * pgm)
-{
-  /* Do nothing. */
-
-  return 0;
-}
-
-
-static void avr910_restore(PROGRAMMER * pgm)
-{
-  /* Do nothing. */
-
-  return;
-}
-
-
 static void avr910_disable(PROGRAMMER * pgm)
 {
   /* Do nothing. */
@@ -308,7 +292,7 @@ static int avr910_cmd(PROGRAMMER * pgm, unsigned char cmd[4],
 }
 
 
-static void avr910_open(PROGRAMMER * pgm, char * port)
+static int avr910_open(PROGRAMMER * pgm, char * port)
 {
   /*
    *  If baudrate was not specified use 19.200 Baud
@@ -644,8 +628,6 @@ void avr910_initpgm(PROGRAMMER * pgm)
   pgm->vfy_led        = avr910_vfy_led;
   pgm->initialize     = avr910_initialize;
   pgm->display        = avr910_display;
-  pgm->save           = avr910_save;
-  pgm->restore        = avr910_restore;
   pgm->enable         = avr910_enable;
   pgm->disable        = avr910_disable;
   pgm->powerup        = avr910_powerup;

butterfly.c

@@ -311,26 +311,6 @@ static int butterfly_initialize(PROGRAMMER * pgm, AVRPART * p)
 }
 
 
-static int butterfly_save(PROGRAMMER * pgm)
-{
-  no_show_func_info();
-
-  /* Do nothing. */
-
-  return 0;
-}
-
-
-static void butterfly_restore(PROGRAMMER * pgm)
-{
-  no_show_func_info();
-
-  /* Do nothing. */
-
-  return;
-}
-
-
 static void butterfly_disable(PROGRAMMER * pgm)
 {
   no_show_func_info();
@@ -351,7 +331,7 @@ static void butterfly_enable(PROGRAMMER * pgm)
 }
 
 
-static void butterfly_open(PROGRAMMER * pgm, char * port)
+static int butterfly_open(PROGRAMMER * pgm, char * port)
 {
   no_show_func_info();
 
@@ -362,6 +342,8 @@ static void butterfly_open(PROGRAMMER * pgm, char * port)
    * drain any extraneous input
    */
   butterfly_drain (pgm, 0);
+
+  return 0;
 }
 
 
@@ -615,8 +597,6 @@ void butterfly_initpgm(PROGRAMMER * pgm)
   pgm->vfy_led        = butterfly_vfy_led;
   pgm->initialize     = butterfly_initialize;
   pgm->display        = butterfly_display;
-  pgm->save           = butterfly_save;
-  pgm->restore        = butterfly_restore;
   pgm->enable         = butterfly_enable;
   pgm->disable        = butterfly_disable;
   pgm->powerup        = butterfly_powerup;

doc/TODO

@@ -20,3 +20,5 @@
 - FIXME: ser_posix.c: serial_close(): Should really restore the terminal to 
   original state here.
 
+- FIXME: main.c, par.c: exitspecs don't work if RESET-pin is controlled over
+  PPICTRL.

main.c

@@ -679,7 +679,6 @@ int main(int argc, char * argv [])
   struct avrpart * p;           /* which avr part we are programming */
   struct avrpart * v;           /* used for verify */
   int              readorwrite; /* true if a chip read/write op was selected */
-  int              ppidata;	/* cached value of the ppi data register */
   AVRMEM         * sig;         /* signature data */
   struct stat      sb;
   UPDATE         * upd;
@@ -1173,7 +1172,12 @@ int main(int argc, char * argv [])
     fprintf(stderr, "%sUsing Programmer      : %s\n", progbuf, programmer);
   }
 
-  pgm->open(pgm, port);
+  rc = pgm->open(pgm, port);
+  if (rc < 0) {
+    exitrc = 1;
+    pgm->ppidata = 0; /* clear all bits at exit */
+    goto main_exit;
+  }
 
   if (verbose) {
     avr_display(stderr, p, progbuf, verbose);
@@ -1186,15 +1190,8 @@ int main(int argc, char * argv [])
   exitrc = 0;
 
   /*
-   * allow the programmer to save its state
+   * handle exit specs. FIXME: this should be moved to "par.c"
    */
-  rc = pgm->save(pgm);
-  if (rc < 0) {
-    exitrc = 1;
-    ppidata = 0; /* clear all bits at exit */
-    goto main_exit;
-  }
-
   if (strcmp(pgm->type, "PPI") == 0) {
     pgm->ppidata &= ~ppiclrbits;
     pgm->ppidata |= ppisetbits;
@@ -1412,11 +1409,6 @@ int main(int argc, char * argv [])
 
   pgm->powerdown(pgm);
 
-  /*
-   * restore programmer state
-   */
-  pgm->restore(pgm);
-
   pgm->disable(pgm);
 
   pgm->rdy_led(pgm, OFF);

par.c

@@ -105,15 +105,11 @@ static void par_powerdown      (PROGRAMMER * pgm);
 
 static int  par_initialize     (PROGRAMMER * pgm, AVRPART * p);
 
-static int  par_save           (PROGRAMMER * pgm);
-
-static void par_restore        (PROGRAMMER * pgm);
-
 static void par_disable        (PROGRAMMER * pgm);
 
 static void par_enable         (PROGRAMMER * pgm);
 
-static void par_open           (PROGRAMMER * pgm, char * port);
+static int  par_open           (PROGRAMMER * pgm, char * port);
 
 static void par_close          (PROGRAMMER * pgm);
 
@@ -437,26 +433,6 @@ static int par_initialize(PROGRAMMER * pgm, AVRPART * p)
 }
 
 
-static int par_save(PROGRAMMER * pgm)
-{
-  int rc;
-
-  rc = ppi_getall(pgm->fd, PPIDATA);
-  if (rc < 0) {
-    fprintf(stderr, "%s: error reading status of ppi data port\n", progname);
-    return -1;
-  }
-
-  pgm->ppidata = rc;
-
-  return 0;
-}
-
-static void par_restore(PROGRAMMER * pgm)
-{
-  ppi_setall(pgm->fd, PPIDATA, pgm->ppidata);
-}
-
 static void par_disable(PROGRAMMER * pgm)
 {
   ppi_set(pgm->fd, PPIDATA, pgm->pinno[PPI_AVR_BUFF]);
@@ -485,8 +461,10 @@ static void par_enable(PROGRAMMER * pgm)
 }
 
 
-static void par_open(PROGRAMMER * pgm, char * port)
+static int par_open(PROGRAMMER * pgm, char * port)
 {
+  int rc;
+
   pgm->fd = ppi_open(port);
   if (pgm->fd < 0) {
     fprintf(stderr, "%s: failed to open parallel port \"%s\"\n\n",
@@ -495,11 +473,38 @@ static void par_open(PROGRAMMER * pgm, char * port)
   }
 
   ppi_claim(pgm);
+
+  /*
+   * save pin values, so they can be restored when device is closed
+   */
+  rc = ppi_getall(pgm->fd, PPIDATA);
+  if (rc < 0) {
+    fprintf(stderr, "%s: error reading status of ppi data port\n", progname);
+    return -1;
+  }
+  pgm->ppidata = rc;
+
+  rc = ppi_getall(pgm->fd, PPICTRL);
+  if (rc < 0) {
+    fprintf(stderr, "%s: error reading status of ppi ctrl port\n", progname);
+    return -1;
+  }
+  pgm->ppictrl = rc;
+
+  return 0;
 }
 
 
 static void par_close(PROGRAMMER * pgm)
 {
+  /*
+   * Restore pin values before closing,
+   * but ensure that buffers are turned off.
+   */
+  pgm->ppidata |= pgm->pinno[PPI_AVR_BUFF];
+  ppi_setall(pgm->fd, PPIDATA, pgm->ppidata);
+  ppi_setall(pgm->fd, PPICTRL, pgm->ppictrl);
+
   ppi_release(pgm);
 
   ppi_close(pgm->fd);
@@ -563,8 +568,6 @@ void par_initpgm(PROGRAMMER * pgm)
   pgm->vfy_led        = par_vfy_led;
   pgm->initialize     = par_initialize;
   pgm->display        = par_display;
-  pgm->save           = par_save;
-  pgm->restore        = par_restore;
   pgm->enable         = par_enable;
   pgm->disable        = par_disable;
   pgm->powerup        = par_powerup;

pgm.c

@@ -72,8 +72,6 @@ PROGRAMMER * pgm_new(void)
   pgm->vfy_led        = pgm_default_1;
   pgm->initialize     = pgm_default_2;
   pgm->display        = pgm_default_6;
-  pgm->save           = pgm_default_3;
-  pgm->restore        = pgm_default_4;
   pgm->enable         = pgm_default_4;
   pgm->disable        = pgm_default_4;
   pgm->powerup        = pgm_default_4;
@@ -81,7 +79,7 @@ PROGRAMMER * pgm_new(void)
   pgm->program_enable = pgm_default_2;
   pgm->chip_erase     = pgm_default_2;
   pgm->cmd            = pgm_default_5;
-  pgm->open           = pgm_default_6;
+  pgm->open           = pgm_default_3;
   pgm->close          = pgm_default_4;
 
   /*

pgm.h

@@ -42,6 +42,7 @@ typedef struct programmer_t {
   char port[PGM_PORTLEN];
   unsigned int pinno[N_PINS];
   int ppidata;
+  int ppictrl;
   int baudrate;
   int fd;
   int  page_size;  /* page size if the programmer supports paged write/load */
@@ -51,8 +52,6 @@ typedef struct programmer_t {
   int  (*vfy_led)        (struct programmer_t * pgm, int value);
   int  (*initialize)     (struct programmer_t * pgm, AVRPART * p);
   void (*display)        (struct programmer_t * pgm, char * p);
-  int  (*save)           (struct programmer_t * pgm);
-  void (*restore)        (struct programmer_t * pgm);
   void (*enable)         (struct programmer_t * pgm);
   void (*disable)        (struct programmer_t * pgm);
   void (*powerup)        (struct programmer_t * pgm);
@@ -61,7 +60,7 @@ typedef struct programmer_t {
   int  (*chip_erase)     (struct programmer_t * pgm, AVRPART * p);
   int  (*cmd)            (struct programmer_t * pgm, unsigned char cmd[4], 
                           unsigned char res[4]);
-  void (*open)           (struct programmer_t * pgm, char * port);
+  int  (*open)           (struct programmer_t * pgm, char * port);
   void (*close)          (struct programmer_t * pgm);
   int  (*paged_write)    (struct programmer_t * pgm, AVRPART * p, AVRMEM * m, 
                           int page_size, int n_bytes);

stk500.c

@@ -522,16 +522,6 @@ static int stk500_initialize(PROGRAMMER * pgm, AVRPART * p)
 }
 
 
-static int stk500_save(PROGRAMMER * pgm)
-{
-  return 0;
-}
-
-static void stk500_restore(PROGRAMMER * pgm)
-{
-  return;
-}
-
 static void stk500_disable(PROGRAMMER * pgm)
 {
   unsigned char buf[16];
@@ -585,7 +575,7 @@ static void stk500_enable(PROGRAMMER * pgm)
 }
 
 
-static void stk500_open(PROGRAMMER * pgm, char * port)
+static int stk500_open(PROGRAMMER * pgm, char * port)
 {
   strcpy(pgm->port, port);
   pgm->fd = serial_open(port, 115200);
@@ -598,6 +588,8 @@ static void stk500_open(PROGRAMMER * pgm, char * port)
   stk500_getsync(pgm);
 
   stk500_drain(pgm, 0);
+
+  return 0;
 }
 
 
@@ -1185,8 +1177,6 @@ void stk500_initpgm(PROGRAMMER * pgm)
   pgm->vfy_led        = stk500_vfy_led;
   pgm->initialize     = stk500_initialize;
   pgm->display        = stk500_display;
-  pgm->save           = stk500_save;
-  pgm->restore        = stk500_restore;
   pgm->enable         = stk500_enable;
   pgm->disable        = stk500_disable;
   pgm->powerup        = stk500_powerup;