Revision 0:ed79162edfb0, committed 2014-05-22

Comitter:

cstevens

Date:

Thu May 22 11:30:43 2014 +0000

Commit message:

demo code for ir data on tsmp1138 - transmits data across ir link

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu May 22 11:30:43 2014 +0000
@@ -0,0 +1,34 @@
+#include "mbed.h"
+/*demo program to test ir data transmission using a tsmp1138 ir receiver and an IR LED
+code for an FRDM-KL25Z
+connections are LED negative to the serial TC and the positive to the PWM.
+The output from the tsmp1138 icarries the 38khz modulation and hence requires a smoothing cap to
+allow simple serial detection. 3.3nF between the output and ground from the tsmp1138 is sufficient. 
+*/
+DigitalOut myled(LED2);
+PwmOut carrier(PTA5);
+Serial TX(PTC4,PTC3);
+Serial RX(PTD3,PTD2);
+Serial pc(USBTX,USBRX);
+
+static char message[]="One Fine DAy In the Middle of the Night\n";
+
+int main() {
+    char c;
+    pc.printf("start\n\r");
+    int n;
+    //set up the twp ports
+    RX.baud(1000);
+    TX.baud(1000);
+    carrier.period(1.0/38000.0);
+    carrier=0.5;
+    n=0;
+    while(1) {
+        TX.putc(message[n]);
+        n=(n+1)%sizeof(message);
+        wait(0.05);
+        myled=!myled;
+        c=RX.getc();
+        pc.putc(c);
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Thu May 22 11:30:43 2014 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/0b3ab51c8877
\ No newline at end of file