Tadao Iida
mbed/ARM 活用事例 第5章 赤外線距離センサを使う
Revision 0:6ff38abfbe0b, committed 2011-02-18
- Comitter:
- sunifu
- Date:
- Fri Feb 18 04:48:24 2011 +0000
- Commit message:
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TextLCD.lib Fri Feb 18 04:48:24 2011 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/simon/code/TextLCD/#44f34c09bd37
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Fri Feb 18 04:48:24 2011 +0000
@@ -0,0 +1,86 @@
+#include "mbed.h"
+#include "TextLCD.h"
+// #include "math.h"
+
+TextLCD lcd(p24, p26, p27, p28, p29, p30);
+AnalogIn in(p20);
+AnalogOut out(p18);
+Ticker input;
+Ticker output;
+int freq;
+double t = 0.0 ;
+float d11 = 0.0, d12 =0.0 ;
+
+void run(){
+ float data ;
+
+ data = in;
+ lcd.locate(3,0);
+
+ if ( data < 0.1212){
+ freq = 0;
+ lcd.putc(0xFE);
+ lcd.putc(0xFE);
+ }else if ( data < 0.181){
+ freq = 2093;
+ lcd.putc(0xC4);
+ lcd.putc(0xDE);
+ }else if ( data < 0.242){
+ freq = 1976;
+ lcd.putc(0xBC);
+ lcd.putc(0xFE);
+ }else if ( data < 0.333){
+ freq = 1760;
+ lcd.putc(0xD7);
+ lcd.putc(0xFE);
+ }else if ( data < 0.394){
+ freq = 1568;
+ lcd.putc(0xBF);
+ lcd.putc(0xFE);
+ }else if ( data < 0.485){
+ freq = 1397;
+ lcd.putc(0xCC);
+ lcd.putc(0xA7);
+ }else if ( data < 0.697 ){
+ freq = 1319;
+ lcd.putc(0xD0);
+ lcd.putc(0xFE);
+ }else if ( data < 0.85){
+ freq = 1175;
+ lcd.putc(0xDA);
+ lcd.putc(0xFE);
+ }else{
+ freq = 1046;
+ lcd.putc(0xC4);
+ lcd.putc(0xDE);
+ }
+
+ if ( 0.12 <= data){
+ float range = 26.663 * pow((data*3.3),-1.25);
+ lcd.locate(0,1);
+ lcd.printf("RANGE %4.1f[cm]",range);
+ }else{
+ lcd.locate(0,1);
+ lcd.printf("RANGE OVER! ");
+ }
+}
+
+void wave(){
+ float a;
+
+ if ( freq != 0 ){
+ a =0.5*sin(2.0 * 3.1415 * freq * t )+0.5;
+ out = a;
+ }
+ if ( t > 1.0 ) t = 0.0 ;
+ t=t+0.00005;
+}
+
+int main() {
+ input.attach(&run,0.5);
+ output.attach_us(&wave,50);
+
+ while(1){
+
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Fri Feb 18 04:48:24 2011 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/e2ac27c8e93e