Diff: main.cpp

Revision:

0:84a7343cd5c1

Child:

1:f0831940e436

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Mar 18 08:33:44 2015 +0000
@@ -0,0 +1,52 @@
+#include "mbed.h"
+
+//SPI Slave
+SPISlave device(dp2, dp1, dp6, dp25); // mosi, miso, sclk, ssel
+Serial pc(USBTX, USBRX); 
+ 
+ int main() {
+     pc.baud(9600);
+     //pc.format(8, SerialBase::None, 1);
+     device.frequency(1000000);
+     device.format(8, 0);
+     device.reply(0x00);
+     
+     int i = 0; 
+     
+     while(1) {
+         
+         uint8_t instruction = 0xAB; 
+         
+         pc.printf("waiting for instruction");
+         device.reply(0xFF);
+
+         while(!device.receive()) {
+             if(i++ % 10000 == 0) {
+                 printf(".");
+             }
+         }
+         pc.printf("\r\n");
+         instruction = device.read();   // Read byte from master
+         
+         if(instruction == 0xFF) {
+            continue;
+         } 
+         
+         uint8_t reply = instruction + 0x10; 
+         device.reply(reply);
+                 
+         pc.printf("waiting for reply signal");
+         while(!device.receive()) {
+             if(i++ % 10000 == 0) {
+                 printf(".");
+             }
+         }
+         pc.printf("\r\n");
+    
+         uint8_t ignore = device.read();
+         
+         pc.printf("instruction: 0x%X; reply: 0x%X; dummy_instruction: 0x%X\r\n", instruction, reply, ignore); 
+         
+     }   
+      
+ }