Pavel Šimík / Mbed 2 deprecated lpc1114uart

First test on using mbed library with naked LPC1114 chip on breadboard. Blink LED pin 28, append UART test, procedure putc(), puts(), PWM beep 1kHz on pin 1.

Dependencies:   mbed

Fork of lpc1114test by Saudin Dizdarevic

Files at this revision

API Documentation at this revision

Revision 6:01a61ae34a8a, committed 2013-11-09

Comitter:
psimik
Date:
Sat Nov 09 22:40:39 2013 +0000
Parent:
5:051be37cfef7
Commit message:
append comments

Changed in this revision

main.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/main.cpp	Sat Nov 09 16:25:45 2013 +0000
+++ b/main.cpp	Sat Nov 09 22:40:39 2013 +0000
@@ -1,8 +1,8 @@
 #include "mbed.h"
-// naked LPC1114 on breadboard
-DigitalOut myled(dp28);  // LED connect to P0_7 (pin 28)
-Serial uart(dp16, dp15); // UART connect to P1_7: TX (pin 16), P1_6: RX (pin 15)
-PwmOut pwm(dp1);         // PWM connect to P0_8: CT16B0_MAT0 (pin1); sorry, blocking SPI!  
+// naked LPC1114 on breadboard, install LED pin28, pasive piezo-buzzer pin1
+DigitalOut myled(dp28);  // LED ... P0_7 (pin 28)
+Serial uart(dp16, dp15); // UART .. P1_7: TX (pin 16), P1_6: RX (pin 15)
+PwmOut pwm(dp1);         // PWM ... P0_8: CT16B0_MAT0 (pin1); sorry, blocking SPI!  
 
 int main() {
 char c = '0';
@@ -11,11 +11,11 @@
   uart.puts("Start.\n\r");
   while(1) {    // repeat (period 1sec)
     myled = 0;  // LED on
-    pwm = 0.5;  // PWM duty cycle 50%
+    pwm = 0.5;  // PWM duty cycle 50%, tone 1kHz
     wait(0.5);
     uart.putc(c++); if (c > '9') c = '0';  // Put Character & rotate 0,1,2,... 9
     myled = 1;  // LED off
-    pwm = 0;    // PWM stop
+    pwm = 0;    // PWM stop, silent
     wait(0.5);
     uart.puts(" Hello world.\n\r");  // Put String "Hello..."
     }