vfs: Force boot interface FW using start_if.act

source/daplink/bootloader/main_bootloader.c

@@ -274,7 +274,7 @@ int main(void)
 
     // check for invalid app image or rst button press. Should be checksum or CRC but NVIC validation is better than nothing.
     // If the interface has set the hold in bootloader setting don't jump to app
-    if (!reset_button_pressed()
+    if ((config_ram_get_force_enter_if() || !reset_button_pressed())
             && g_board_info.target_cfg
             && validate_bin_nvic((uint8_t *)g_board_info.target_cfg->flash_regions[0].start)
             && !config_ram_get_initial_hold_in_bl()) {

source/daplink/drag-n-drop/vfs_user.c

@@ -218,7 +218,8 @@ void vfs_user_file_change_handler(const vfs_filename_t filename, vfs_file_change
                         if (daplink_is_interface()) {
                             config_ram_set_hold_in_bl(true);
                         } else {
-                            // Do nothing - bootloader will go to interface by default
+                            // Force enter the interface mode regardless of the state of the RESET pin
+                            config_ram_set_force_enter_if(true);
                         }
                         break;
                     case kTestAssertActionFile:

source/daplink/settings/settings.c

@@ -58,8 +58,13 @@ typedef struct __attribute__((__packed__)) cfg_ram {
     // Disable msd support
     uint8_t disable_msd;
 
-    //Add new entries from here
+    // Enable page erase
     uint8_t page_erase_enable;
+
+    // Force enter interface firmware (no checks for RESETn)
+    uint8_t force_enter_if;
+
+    //Add new entries from here
 } cfg_ram_t;
 
 // Ensure hexdump field is word aligned.
@@ -104,6 +109,7 @@ void config_init()
     memcpy(config_ram.hexdump, config_ram_copy.hexdump, sizeof(config_ram_copy.hexdump[0]) * config_ram_copy.valid_dumps);
     config_ram.disable_msd = config_ram_copy.disable_msd;
     config_ram.page_erase_enable = config_ram_copy.page_erase_enable;
+    config_ram.force_enter_if = config_ram_copy.force_enter_if;
     config_rom_init();
 }
 
@@ -253,3 +259,13 @@ bool config_ram_get_page_erase(void)
 {
     return config_ram.page_erase_enable;
 }
+
+void config_ram_set_force_enter_if(bool force_enter)
+{
+    config_ram.force_enter_if = force_enter;
+}
+
+bool config_ram_get_force_enter_if(void)
+{
+    return config_ram.force_enter_if;
+}

source/daplink/settings/settings.h

@@ -61,6 +61,8 @@ void config_ram_set_disable_msd(bool disable_msd);
 uint8_t config_ram_get_disable_msd(void);
 void config_ram_set_page_erase(bool page_erase_enable);
 bool config_ram_get_page_erase(void);
+void config_ram_set_force_enter_if(bool force_enter);
+bool config_ram_get_force_enter_if(void);
 
 // Private - should only be called from settings.c
 void config_rom_init(void);