Ryo Od / Mbed OS mbed-os_SPITest_Master

SPI Test (Master)

Diff: main.cpp

Revision:
1:b34b41d8a360
Parent:
0:0c8fb6842c2a
--- a/main.cpp	Thu May 18 07:00:58 2017 +0000
+++ b/main.cpp	Fri May 19 01:26:13 2017 +0000
@@ -6,15 +6,27 @@
 int main()
 {
     printf("SPIMaster Test\r\n");
-    
+
     spiM.format(8, 0);
-    spiM.frequency(8000000);
-    
-    for (;;) {   
+    spiM.frequency(1000000);
+
+    uint8_t sdata = 0;
+
+    for (;;) {
         cs = 0;
-        int rdata = spiM.write(0x55);
+        uint8_t rdata = spiM.write(sdata);
         cs = 1;
-        wait_ms(1);
-        printf("received: %x\r\n", rdata);
+
+        printf("Master: sdata:%d rdata:%d ", sdata, rdata);
+
+        uint8_t err = sdata - rdata;
+        if (err != 1) {
+            printf("err:%d", err);
+        }
+        printf("\r\n");
+
+        sdata++;
+        
+        //wait_ms(100);
     }
-}    
+}