Revision 0:0177715f0996, committed 2016-03-06

Comitter:

mintisan

Date:

Sun Mar 06 07:22:27 2016 +0000

Commit message:

initial c coroutine for mbed

Changed in this revision

diff -r 000000000000 -r 0177715f0996 coroutine.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/coroutine.h	Sun Mar 06 07:22:27 2016 +0000
@@ -0,0 +1,34 @@
+#ifndef COROUTINE_H_
+#define COROUTINE_H_
+
+#ifdef __cplushplus
+extern "C"{
+#endif
+
+/**
+ * C coroutine 
+ * https://github.com/mintisan/mintisan.github.io/wiki/C#coroutine
+ */
+
+#define cr_start()              \
+        static int __s = 0;     \
+        switch(__s){            \
+            case 0:
+
+// '\' doesn't count for one line in C
+#define cr_yield(condition) do{      \
+            __s = __LINE__ ;     \
+                case __LINE__:      \
+                    if(condition)   \
+                    return;         \
+                }while(0)
+
+#define cr_end()                \
+        } __s = 0;            
+
+
+#ifdef __cplushplus
+}
+#endif
+
+#endif

diff -r 000000000000 -r 0177715f0996 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Mar 06 07:22:27 2016 +0000
@@ -0,0 +1,55 @@
+#include "mbed.h"
+#include "coroutine.h"
+
+volatile uint16_t cr_time1;
+volatile uint16_t cr_time2;
+
+void user_thread1(void);
+void user_thread2(void);
+
+Ticker toggle_led_ticker;
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+
+void isr_ticker() {
+    cr_time1++;
+    cr_time2++;
+}
+
+
+
+int main(void) {
+    // Init the ticker with the address of the function (isr_ticker) to be attached and the interval (1 ms)
+    toggle_led_ticker.attach(&isr_ticker, 0.001);
+    while (true) {
+        // Do other things...
+        user_thread1();
+        user_thread2();
+    }
+}
+
+void user_thread1(void)
+{
+    cr_start();
+    
+    // inital once each loop
+    cr_time1 = 0;
+    // waiting for condition is satisfied, or will be yield
+    cr_yield(cr_time1 != 1000);
+    led1 = !led1;
+            
+    cr_end();
+}
+
+void user_thread2(void)
+{
+    cr_start();
+    
+    // inital once each loop
+    cr_time2 = 0;
+    // waiting for condition is satisfied, or will be yield
+    cr_yield(cr_time2 != 800);
+    led2 = !led2;
+
+    cr_end();           
+}

diff -r 000000000000 -r 0177715f0996 mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Sun Mar 06 07:22:27 2016 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/87f2f5183dfb
\ No newline at end of file