Ted Lin
/
Nucleo_ticker_coroutine
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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
--- /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
--- /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();
+}
--- /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