Diff: main.cpp

Revision:

2:0248049e65f1

Parent:

1:793321f410a9

Child:

3:65a33de8fa08

--- a/main.cpp	Fri Oct 31 13:07:40 2014 +0000
+++ b/main.cpp	Sat Nov 01 13:58:50 2014 +0000
@@ -1,14 +1,47 @@
+/*
+ * test for 
+ *  - Microchip SRAM 23K256 (SPI)
+ *  - Intersil Red/Green/Blue Color Light Sensor (I2C, address = 1000 100x, hard-wires)
+ *    - ISL29125 data sheet, p.7, Device Adressing 
+ *  - 
+ */
+
 #include "mbed.h"
 
+/** Serial port for DEBUG */
+Serial pc(USBTX, USBRX);
+
+InterruptIn mybutton(USER_BUTTON);
+
+/** ユーザーボタンが押されたらtrue */
+volatile bool is_pressed = false;
+
+/**
+ * USERボタン 割り込みハンドラ
+ */
+void 
+pressed() {
+    is_pressed = true;
+}
+
+/**
+ * USERボタンが押されるまで待つ。
+ */
+void
+wait_until_user_button_pressed() {
+    while (!is_pressed) {
+        __nop();
+    }
+    is_pressed = false;
+    pc.printf("USER button is pressed\r\n");
+}
+
 /** */
 SPI spi(SPI_MOSI, SPI_MISO, SPI_SCK);
 
 /** */
 DigitalOut cs(SPI_CS);
 
-/** for DEBUG */
-Serial pc(USBTX, USBRX);
-
 /*
  * SPI COMMAND (Microchip 23K256 SRAM)
  * 1byte read/write 
@@ -283,12 +316,17 @@
     pc.printf("read: 0x%02x\r\n", value);
 }
 
+
 /**
  * 動作確認用。TODO: テストコードにすること。
  */
 int
 main()
 {
+    mybutton.fall(&pressed);
+
+    wait_until_user_button_pressed();
+
     // initialize
     spi.format(8, 0);   // 8bit, mode=0
     spi.frequency(20 * 1000 * 1000);    // max 20MHz
@@ -296,10 +334,18 @@
 
     // test
     pc.printf("TEST START\r\n");
+
+    wait_until_user_button_pressed();
     try_single_byte_access();
+
+    wait_until_user_button_pressed();
     try_byte_access();
+
     try_page_access();
+
+    wait_until_user_button_pressed();
     try_sequential_access();
+
     pc.printf("TEST END\r\n\r\n");
 
     return 0;