Diff: main.cpp

Revision:

0:ba450e9d7f56

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Mar 10 15:24:36 2015 +0000
@@ -0,0 +1,62 @@
+#include "mbed.h"
+
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+
+Serial pc (USBTX,USBRX);
+Serial target (p28,p27);
+
+// We'll drive this low, and then set the as inputs
+// this mimics an open collector style ouput
+DigitalInOut reset (p29);
+DigitalInOut isp   (p30);
+
+int main() {
+
+    pc.baud(115200);
+    target.baud(115200);
+   
+    // ISP Input with pullup
+    pc.printf("Ready!\r\n");
+    isp.input();
+    isp.mode(PullUp);
+
+    // pulse reset low
+    reset.output();
+    reset = 0;
+    wait (0.01);
+    
+    // reset input, with pullup
+    reset.input();
+    reset.mode(PullUp);
+    
+    while (!pc.readable()) {}   
+   
+    // pull ISP and nReset low
+    reset.output();
+    isp.output();
+    reset = 0;
+    isp = 0;
+    
+    wait (0.1);
+    
+    // Bring target out of reset
+    reset.input();
+    reset.mode(PullUp);
+    
+    wait (0.1);
+
+    while (1) {
+    
+        if (pc.readable()) {
+            target.putc(pc.getc());
+            led1 = !led1;
+        }
+    
+        if (target.readable()) {
+            pc.putc(target.getc());
+            led2 = !led2;
+        }
+    
+    }
+}
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