Yan Wang
/
ForeBackGround
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Revision 0:c3c4f3479042, committed 2010-11-30
- Comitter:
- phyllis
- Date:
- Tue Nov 30 22:14:03 2010 +0000
- Commit message:
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue Nov 30 22:14:03 2010 +0000
@@ -0,0 +1,188 @@
+#include "mbed.h"
+
+void serial_interrupt( );
+void readstring(char c);
+int touchSense( );
+char readkey( );
+
+Serial pc(USBTX, USBRX); // tx, rx
+AnalogIn input0(p20);
+AnalogIn input1(p17);
+DigitalIn charger0(p19);
+DigitalIn charger1(p16);
+DigitalOut ground0(p18);
+DigitalOut ground1(p15);
+
+char x;
+char hstr[100];
+int serial_flag = 0;
+int str_flag = 0;
+int host_flag = 0;
+int index = 0;
+int len;
+
+int main()
+{
+ char key;
+ char ustr[100];
+ int i, j;
+ int cmp_flag = 0;
+ pc.attach(&serial_interrupt, Serial::RxIrq);
+ while(1){
+ if (serial_flag == 1){
+ serial_flag = 0;
+ readstring(x);
+ }
+ i = 0;
+ cmp_flag = 0;
+ while (host_flag == 1){
+ key = readkey( );
+ if (key == 'e')
+ pc.printf("TOUCH ERROR");
+ else if (key == '1' || key == '0'){
+ ustr[i] = key;
+ printf("%c\n", ustr[i]);
+ if (i == len){
+ i = 0;
+ cmp_flag = 1;
+ }
+ else
+ i++;
+ if ( cmp_flag == 1 ){
+ for (j = 0; j <= len; j++){
+ if (hstr[j] != ustr[(i+j) % (len+1)])
+ break;
+ }
+ if (j == len+1)
+ pc.printf("MATCH!");
+ }
+ }
+ wait(0.005);
+ }
+ }
+}
+
+void readstring(char c)
+{
+ int i;
+ if (x=='S'){
+ str_flag = 1;
+ index = 0;
+ }
+ else if (x=='E' && str_flag==1){
+ str_flag = 0;
+ host_flag = 1;
+ len = index - 1;
+ for (i = 0; i <= len; i++)
+ pc.printf("%c", hstr[i]);
+ }
+ else if (str_flag==1){
+ if (x=='1' || x=='0'){
+ hstr[index] = x;
+ index++;
+ }
+ else
+ pc.printf("HOST ERROR!\n");
+ }
+ return;
+}
+
+int touchSense( )
+{
+ float sample0, sample1;
+ ground0=0;
+ ground1=0;
+ charger0.mode(PullUp);
+ charger1.mode(PullUp);
+ charger0.mode(PullNone);
+ charger1.mode(PullNone);
+ sample0 = input0.read();
+ sample1 = input1.read();
+ if (sample0 < 0.3 && sample1 < 0.3)
+ return 2;
+ else if (sample0 < 0.3)
+ return 0;
+ else if (sample1 < 0.3)
+ return 1;
+ else
+ return -1;
+}
+
+char readkey( )
+{
+ int T = -1;
+ char key = 'n';
+
+ T = touchSense();
+ if (T==0) {
+ wait(0.005);
+ T = touchSense();
+ if (T==0){
+ while (1){
+ wait(0.005);
+ T = touchSense();
+ if (T==-1){
+ wait(0.005);
+ T = touchSense();
+ if (T==-1){
+ key = '0';
+ break;
+ }
+ }
+ else if (T==2)
+ break;
+ }
+ }
+ }
+ else if (T==1){
+ wait(0.005);
+ T = touchSense();
+ if (T==1){
+ while (1){
+ wait(0.005);
+ T = touchSense();
+ if (T==-1){
+ wait(0.005);
+ T = touchSense();
+ if (T==-1){
+ key = '1';
+ break;
+ }
+ }
+ else if (T==2)
+ break;
+ }
+ }
+ }
+ else if (T==-1)
+ key = 'n';
+ if (T==2){
+ wait(0.005);
+ T = touchSense();
+ if (T==2){
+ while (1){
+ wait(0.005);
+ T = touchSense();
+ if (T==-1){
+ wait(0.005);
+ T = touchSense();
+ if (T==-1){
+ key = 'e';
+ break;
+ }
+ }
+ }
+ }
+ }
+ return key;
+}
+
+void serial_interrupt( )
+{
+ if (pc.readable( )){
+ x = pc.getc( );
+ serial_flag = 1;
+ host_flag = 0;
+ }
+ return;
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue Nov 30 22:14:03 2010 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/e2ac27c8e93e