Diff: test_mode.cpp

Revision:

3:3e8c16b6620c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test_mode.cpp	Thu Jun 21 22:11:25 2018 +0000
@@ -0,0 +1,51 @@
+#include "mbed.h"
+
+extern Serial pc;
+
+
+char test_char = 0;
+int test = 1;
+
+void get_char() {
+    test_char = pc.getc();
+    if(test_char == 's') test=0;
+    pc.printf("\n\r"); 
+}  
+
+void testmode() {
+    DigitalOut sda(p9,1);
+    DigitalOut scl(p10,1);
+    LPC_PINCON->PINMODE_OD0 = (LPC_PINCON->PINMODE_OD0  | 0x0003); // To make p9 & P10 open_drain
+    Timer timer1;
+    test = 1; 
+    test_char = 0;
+    pc.printf("\n\n\r\tStarting test-mode pattern generation ...\n\r");
+    pc.printf("\n\n\r\tEnter 's' to stop test-mode: ");
+    pc.attach(&get_char); //interupt looking for character entry    
+    timer1.start();
+    while(test) {
+        while(timer1.read_us()<300) {
+        }
+        sda=0;
+        while(timer1.read_us()<600) {
+        }
+        scl=0;
+        while(timer1.read_us()<900) {
+        }               
+        sda=1;
+        while(timer1.read_us()<950) {
+        } 
+        scl=1;
+        while(timer1.read_us()<1200) {
+        }
+        timer1.reset();             
+    }
+    timer1.stop();
+    scl=1;
+    sda=1;
+    pc.printf("\n\n\r\t....test-mode pattern generation stopped\n\n\r");
+    sda.~DigitalOut();
+    scl.~DigitalOut();
+    pc.attach(NULL);
+    return; 
+}    
\ No newline at end of file