SPI#read, SPI#transfer are not implemented.

Author: yuuu

README.md

@@ -9,7 +9,7 @@ You need [esp-idf v5.0](https://docs.espressif.com/projects/esp-idf/en/release-v
 Add the line below to your `build_config.rb`:
 
 ```ruby
-  conf.gem :github => 'yuuu/mruby-esp32-spi'
+  conf.gem :github => 'mruby-esp32-api/mruby-esp32-spi'
 ```
 
 ## Examples
@@ -24,10 +24,11 @@ spi.write(0x30, 0x20, 0x00)
 spi.write("\x30\xa2")
 spi.write(0x30)
 
+# NOT IMPLEMENTED
 data = spi.read( 32 )
 
+# NOT IMPLEMENTED
 s = spi.transfer([0x30, 0x20], 1)
-
 ```
 
 ## LICENSE

mrblib/spi.rb

@@ -41,30 +41,18 @@ def write(outputs)
   end
 
   def read(read_bytes)
-    self.read_bytes = read_bytes
-
-    __read(read_bytes)
+    raise not_inplemented_error('SPI#read')
   end
 
   def transfer(outputs, additional_read_bytes = 0)
-    self.outputs =
-      if outputs.is_a?(String)
-        outputs
-      elsif outputs.is_a?(Array)
-        outputs.pack("c*")
-      elsif outputs.is_a?(Integer)
-        [outputs].pack("c*")
-      else
-        raise data_type_error
-      end
-
-    additional_read_bytes.times { self.outputs += "\0" }
-
-    __write(self.outputs)
-    __read(self.outputs.size)
+    raise not_inplemented_error('SPI#transfer')
   end
 
   def data_type_error
     TypeError.new("wrong argument type (expected Integer or String or Array<String>)")
   end
+
+  def not_inplemented_error(name)
+    NotImplementedError.new("'#{name}' is not implemented")
+  end
 end

src/mruby_esp32_spi.c

@@ -114,6 +114,7 @@ mrb_spi_setmode(mrb_state *mrb, mrb_value self) {
   );
 
 #ifdef ESP_PLATFORM
+/* TODO */
 #endif
 
   return self;
@@ -128,6 +129,7 @@ mrb_spi_read(mrb_state *mrb, mrb_value self) {
   ESP_LOGI(TAG, "read(%d)", read_bytes);
 
 #ifdef ESP_PLATFORM
+/* TODO */
 #endif
 
   return self;