Diff: main.cpp

Revision:

0:afe80692913e

Child:

1:f8ee57bf1292

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Oct 28 19:10:54 2013 +0000
@@ -0,0 +1,61 @@
+#include "mbed.h"
+
+DigitalOut myled(LED1);
+
+// Create a buffer (note that this is a C module, not an object)
+xifo_t buffer;
+// Allocate memory for buffer
+xifo_pool_t buffer_memory[16]; 
+
+int main() {
+    uint32_t data, succes;
+
+    // Initialise the created buffer
+    xifo_init(&buffer, 128, (uint32_t *)&buffer_memory); 
+    
+    // Erase buffer contents
+    xifo_clear(&buffer);
+
+    // Write some data
+    succes = xifo_write(&buffer, 0x1); 
+    succes = xifo_write(&buffer, 0x2); 
+    succes = xifo_write(&buffer, 0x3);
+    succes = xifo_write(&buffer, 0x4); 
+    succes = xifo_write(&buffer, 0x5); 
+    // Are we full yet?
+    if( xifo_get_free(&buffer) > 0 )
+    {
+        succes = xifo_write(&buffer, 0x6); 
+    }
+            
+    /* Read from the buffer, read-only! */
+    // Read the least recent element        : 0x1
+    data = xifo_read_lr(&buffer, 0);  
+    
+    // Read the 2nd least recent element    : 0x2
+    data = xifo_read_lr(&buffer, 1);
+    
+    // Read the most recent element         : 0x6
+    data = xifo_read_mr(&buffer, 0);
+    
+    // Read the 2nd most recent element     : 0x5
+    data = xifo_read_mr(&buffer, 1);
+    
+    /* Pop from the buffer, removes elements */
+    // Remove the least recent element      : 0x1
+    data = xifo_pop_lr(&buffer);
+    
+    // Remove the most recent element       : 0x6
+    data = xifo_pop_mr(&buffer);
+    
+    /* Done 
+     * Buffer should have this: 0x2, 0x3, 0x4, 0x5
+     */
+        
+    while(1) {
+        myled = 1;
+        wait(0.2);
+        myled = 0;
+        wait(0.2);
+    }
+}