Diff: main.cpp

Revision:

3:b573ad5a8eb7

Parent:

2:688a56c37441

Child:

4:8173ee6ae31b

--- a/main.cpp	Thu Feb 23 01:01:22 2017 +0900
+++ b/main.cpp	Thu Feb 23 22:25:26 2017 +0900
@@ -1,31 +1,67 @@
 #include "mbed.h"
 #include "DirectSPI.h"
+
 /* SPI1 */
 #define MOSI        D11 /* PA_7 */
 #define MISO        D12 /* PA_6 */
 #define SCLK        D13 /* PA_5 */
 #define CS          D10 /* PB_6 or etc. */
+
 DirectSPI spi(MOSI, MISO, SCLK); // mosi, miso, sclk
 DigitalOut cs(CS);
 
-#define DATA8BIT    1
-int main() {
-#if DATA8BIT
+/* auto width transfer test */
+void test_auto() {
     spi.format(8,3);
-#else
-    spi.format(16,3);
-#endif
-    spi.frequency(24*1000000);
-
     while(1){
         cs = 1;
-#if DATA8BIT
+        spi.directWrite(0xaa);
+        spi.directWrite(0xaa);
+        cs = 0;
+    }
+}
+
+/* 8bit width transfer test */
+void test_bit8() {
+    spi.format(8,3);
+    while(1){
+        cs = 1;
         spi.directWrite8(0xaa);
         spi.directWrite8(0xaa);
-#else
-        spi.directWrite16(0x5503);
-        spi.directWrite16(0x5503);
-#endif
         cs = 0;
     }
 }
+
+/* 16bit width transfer test */
+void test_bit16() {
+    spi.format(16,3);
+    while(1){
+        cs = 1;
+        spi.directWrite16(0x5503);
+        spi.directWrite16(0x5503);
+        cs = 0;
+    }
+}
+
+/* 8bit width transfer test using standard library*/
+void test_std8() {
+    spi.format(8,3);
+    while(1){
+        cs = 1;
+        spi.write(0xaa);
+        spi.write(0xaa);
+        cs = 0;
+    }
+}
+
+int main(){
+    spi.frequency(24 * 1000000);
+
+    /* Select the one of the test function */
+    //test_auto();
+    test_bit8();
+    //test_bit16();
+    //test_std8();
+}
+
+