Revision 0:a6e925f144a4, committed 2021-06-02

Comitter:

dorian06

Date:

Wed Jun 02 07:24:41 2021 +0000

Commit message:

capt

Changed in this revision

diff -r 000000000000 -r a6e925f144a4 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Jun 02 07:24:41 2021 +0000
@@ -0,0 +1,40 @@
+#include "mbed.h"
+AnalogOut trig(p16);
+InterruptIn Echo(p15);
+Timer T1;
+Ticker T2;
+void Trig(void);
+void FM(void);
+void FD(void);
+float temp;
+int main()
+{
+    T2.attach(&Trig,1);
+    float dis;
+    Echo.rise(&FM);
+    Echo.fall(&FD);
+    while(1) {
+        dis =17/(100*temp);
+        printf("cm=%g\n\r",dis);
+
+
+    }
+}
+
+void Trig(void)
+{
+    trig=1;
+    wait_us(50);
+    trig=0;
+}
+void FM(void)
+{
+    T1.stop();
+    T1.reset();
+    T1.start();
+}
+void FD(void)
+{
+    T1.stop();
+    temp=T1.read();
+}
\ No newline at end of file

diff -r 000000000000 -r a6e925f144a4 mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Wed Jun 02 07:24:41 2021 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400
\ No newline at end of file