Add FAT FileSystem on ESP32

CMakeLists.txt

@@ -10,7 +10,7 @@ idf_component_register(
     ${COMPONENT_DIR}/picoruby/mrbgems/picoruby-mrubyc/lib/mrubyc/src
     ${COMPONENT_DIR}/picoruby/mrbgems/picoruby-machine/include
     ${COMPONENT_DIR}/picoruby/mrbgems/picoruby-filesystem-fat/ports/esp32
-  REQUIRES esp_driver_uart
+  REQUIRES esp_driver_uart spi_flash
 )
 
 add_definitions(
@@ -19,6 +19,7 @@ add_definitions(
   -DMRBC_USE_FLOAT=2
   -DMRC_CUSTOM_ALLOC
   -DMRBC_CONVERT_CRLF=1
+  -DUSE_FAT_FLASH_DISK
   -DNDEBUG
 )
 

mrblib/main_task.rb

@@ -10,12 +10,31 @@
     STDIN.echo = false
     $shell = Shell.new(clean: true)
 
+    puts "Initializing FLASH disk as the root volume... "
+    $shell.setup_root_volume(:flash, label: 'storage')
+    $shell.setup_system_files
+    puts "Available"
+  end
+rescue => e
+  puts "Not available"
+  puts "#{e.message} (#{e.class})"
+end
+
+begin
+  Machine.using_delay do
+    if File.exist?("/home/app.mrb")
+      puts "Loading app.mrb"
+      load "/home/app.mrb"
+    elsif File.exist?("/home/app.rb")
+      puts "Loading app.rb"
+      load "/home/app.rb"
+    end
+
     puts "Starting shell...\n\n"
 
     $shell.show_logo
     $shell.start
   end
 rescue => e
-  puts "Not available"
   puts "#{e.message} (#{e.class})"
 end