Add support for Flip 2 reset on exit

src/avrdude.1

@@ -462,11 +462,17 @@ MCU type, a previous invocation of
 .Nm
 with this option specified is one of the possible ways to guarantee this
 condition.
+.Em reset
+is supported by the linuxspi and flip2 programmer options, as well as all
+parallel port based programmers.
 .It Ar noreset
 The
 .Ql /RESET
 line will be deactivated at program exit, thus allowing the MCU target
 program to run while the programming hardware remains connected.
+.Em noreset
+is supported by the linuxspi and flip2 programmer options, as well as all
+parallel port based programmers.
 .It Ar vcc
 This option will leave those parallel port pins active
 .Pq \&i. \&e. Em high

src/doc/avrdude.texi

@@ -556,12 +556,16 @@ Note in particular that the programming algorithm for the AT90S1200
 device mandates that the `/RESET' signal is active before powering up
 the MCU, so in case an external power supply is used for this MCU type,
 a previous invocation of AVRDUDE with this option specified is one of
-the possible ways to guarantee this condition.
+the possible ways to guarantee this condition. @code{reset} is supported
+by the @code{linuxspi} and @code{flip2} programmer options, as well as
+all parallel port based programmers.
 
 @item noreset
 The `/RESET' line will be deactivated at program exit, thus allowing the
 MCU target program to run while the programming hardware remains
-connected.
+connected. @code{noreset} is supported by the @code{linuxspi} and
+@code{flip2} programmer options, as well as all parallel port based
+programmers.
 
 @item vcc
 This option will leave those parallel port pins active (i. e. high) that

src/flip2.c

@@ -131,6 +131,7 @@ static void flip2_disable(const PROGRAMMER *pgm);
 static void flip2_display(const PROGRAMMER *pgm, const char *prefix);
 static int flip2_program_enable(const PROGRAMMER *pgm, const AVRPART *part);
 static int flip2_chip_erase(const PROGRAMMER *pgm, const AVRPART *part);
+static int flip2_start_app(const PROGRAMMER *pgm);
 static int flip2_read_byte(const PROGRAMMER *pgm, const AVRPART *part, const AVRMEM *mem,
   unsigned long addr, unsigned char *value);
 static int flip2_write_byte(const PROGRAMMER *pgm, const AVRPART *part, const AVRMEM *mem,
@@ -140,6 +141,7 @@ static int flip2_paged_load(const PROGRAMMER *pgm, const AVRPART *part, const AV
 static int flip2_paged_write(const PROGRAMMER *pgm, const AVRPART *part, const AVRMEM *mem,
   unsigned int page_size, unsigned int addr, unsigned int n_bytes);
 static int flip2_read_sig_bytes(const PROGRAMMER *pgm, const AVRPART *part, const AVRMEM *mem);
+static int flip2_parseexitspecs(PROGRAMMER* pgm, const char *s);
 static void flip2_setup(PROGRAMMER * pgm);
 static void flip2_teardown(PROGRAMMER * pgm);
 
@@ -166,10 +168,6 @@ static const char * flip2_status_str(const struct dfu_status *status);
 static const char * flip2_mem_unit_str(enum flip2_mem_unit mem_unit);
 static enum flip2_mem_unit flip2_mem_unit(const char *name);
 
-#endif /* HAVE_LIBUSB */
-
-/* THE INITPGM FUNCTION DEFINITIONS */
-
 void flip2_initpgm(PROGRAMMER *pgm) {
   strcpy(pgm->type, "flip2");
 
@@ -187,11 +185,11 @@ void flip2_initpgm(PROGRAMMER *pgm) {
   pgm->read_byte        = flip2_read_byte;
   pgm->write_byte       = flip2_write_byte;
   pgm->read_sig_bytes   = flip2_read_sig_bytes;
+  pgm->parseexitspecs   = flip2_parseexitspecs;
   pgm->setup            = flip2_setup;
   pgm->teardown         = flip2_teardown;
 }
 
-#ifdef HAVE_LIBUSB
 /* EXPORTED PROGRAMMER FUNCTION DEFINITIONS */
 
 int flip2_open(PROGRAMMER *pgm, const char *port_spec) {
@@ -315,6 +313,9 @@ int flip2_initialize(const PROGRAMMER *pgm, const AVRPART *part) {
 void flip2_close(PROGRAMMER* pgm)
 {
   if (FLIP2(pgm)->dfu != NULL) {
+    if (pgm->exit_reset == EXIT_RESET_ENABLED)
+      flip2_start_app(pgm);
+
     dfu_close(FLIP2(pgm)->dfu);
     FLIP2(pgm)->dfu = NULL;
   }
@@ -375,6 +376,22 @@ int flip2_chip_erase(const PROGRAMMER *pgm, const AVRPART *part) {
   return cmd_result;
 }
 
+int flip2_start_app(const PROGRAMMER *pgm) {
+  avrdude_message(MSG_INFO, "%s: Starting application\n", progname);
+
+  struct flip2_cmd cmd = {
+    FLIP2_CMD_GROUP_EXEC, FLIP2_CMD_START_APP, { 0x00, 0, 0, 0 }
+  };
+
+  // queue command
+  int cmd_result = dfu_dnload(FLIP2(pgm)->dfu, &cmd, sizeof(cmd));
+
+  // repeat dnload to actually execute
+  dfu_dnload(FLIP2(pgm)->dfu, &cmd, sizeof(cmd));
+
+  return cmd_result;
+}
+
 int flip2_read_byte(const PROGRAMMER *pgm, const AVRPART *part, const AVRMEM *mem,
   unsigned long addr, unsigned char *value)
 {
@@ -489,6 +506,29 @@ int flip2_paged_write(const PROGRAMMER *pgm, const AVRPART *part, const AVRMEM *
   return (result == 0) ? n_bytes : -1;
 }
 
+// Parse the -E option flag
+int flip2_parseexitspecs(PROGRAMMER *pgm, const char *sp) {
+  char *cp, *s, *str = cfg_strdup("flip2_parseextitspecs()", sp);
+
+  s = str;
+  while ((cp = strtok(s, ","))) {
+    s = NULL;
+    if (!strcmp(cp, "reset")) {
+      pgm->exit_reset = EXIT_RESET_ENABLED;
+      continue;
+    }
+    if (!strcmp(cp, "noreset")) {
+      pgm->exit_reset = EXIT_RESET_DISABLED;
+      continue;
+    }
+    free(str);
+    return -1;
+  }
+
+  free(str);
+  return 0;
+}
+
 int flip2_read_sig_bytes(const PROGRAMMER *pgm, const AVRPART *part, const AVRMEM *mem) {
   if (FLIP2(pgm)->dfu == NULL)
     return -1;
@@ -905,76 +945,17 @@ enum flip2_mem_unit flip2_mem_unit(const char *name) {
   return FLIP2_MEM_UNIT_UNKNOWN;
 }
 
-#else /* HAVE_LIBUSB */
-
-/* EXPORTED PROGRAMMER FUNCTION DEFINITIONS */
-
-int flip2_open(PROGRAMMER *pgm, const char *port_spec) {
-  fprintf(stderr, "%s: Error: No USB support in this compile of avrdude\n",
-    progname);
-  return -1;
-}
-
-int flip2_initialize(const PROGRAMMER *pgm, const AVRPART *part) {
-  return -1;
-}
-
-void flip2_close(PROGRAMMER* pgm)
-{
-}
-
-void flip2_enable(PROGRAMMER *pgm, const AVRPART *p) {
-}
-
-void flip2_disable(const PROGRAMMER *pgm) {
-}
-
-void flip2_display(const PROGRAMMER *pgm, const char *prefix) {
-}
-
-int flip2_program_enable(const PROGRAMMER *pgm, const AVRPART *part) {
-  return -1;
-}
-
-int flip2_chip_erase(const PROGRAMMER *pgm, const AVRPART *part) {
-  return -1;
-}
-
-int flip2_read_byte(const PROGRAMMER *pgm, const AVRPART *part, const AVRMEM *mem,
-  unsigned long addr, unsigned char *value)
-{
-  return -1;
-}
-
-int flip2_write_byte(const PROGRAMMER *pgm, const AVRPART *part, const AVRMEM *mem,
-  unsigned long addr, unsigned char value)
-{
-  return -1;
-}
-
-int flip2_paged_load(const PROGRAMMER *pgm, const AVRPART *part, const AVRMEM *mem,
-  unsigned int page_size, unsigned int addr, unsigned int n_bytes)
-{
-  return -1;
-}
-
-int flip2_paged_write(const PROGRAMMER *pgm, const AVRPART *part, const AVRMEM *mem,
-  unsigned int page_size, unsigned int addr, unsigned int n_bytes)
-{
-  return -1;
-}
-
-int flip2_read_sig_bytes(const PROGRAMMER *pgm, const AVRPART *part, const AVRMEM *mem) {
-  return -1;
-}
+#else /* !HAVE_LIBUSB */
 
-void flip2_setup(PROGRAMMER * pgm)
-{
+ // Give a proper error if we were not compiled with libusb
+static int flip2_nousb_open(PROGRAMMER* pgm, const char* name) {
+    avrdude_message(MSG_INFO, "%s: error, no USB support; please compile with libusb installed\n", progname);
+    return -1;
 }
 
-void flip2_teardown(PROGRAMMER * pgm)
-{
+void flip2_initpgm(PROGRAMMER *pgm) {
+    strcpy(pgm->type, "flip2");
+    pgm->open = flip2_nousb_open;
 }
 
-
 #endif /* HAVE_LIBUSB */