refresh 开发指南.pdf

add new interface develop guide and sample code

doc/code/2.3.4 completion/main.c

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+#include "tos.h"
+#include "mcu_init.h"
+
+#define STK_SIZE_TASK_WAIT      512
+#define STK_SIZE_TASK_TRIGGER   512
+
+k_stack_t stack_task_wait[STK_SIZE_TASK_WAIT];
+k_stack_t stack_task_trigger[STK_SIZE_TASK_TRIGGER];
+
+k_task_t task_wait;
+k_task_t task_trigger;
+
+k_completion_t completion;
+
+void entry_task_wait(void *arg)
+{
+    printf("wait: I won't go further until someone do the trigger(make it 'complete')\n");
+    tos_completion_pend(&completion);
+    printf("wait: someone has made it complete, so I'm here\n");
+}
+
+void entry_task_trigger(void *arg)
+{
+    printf("trigger: I'm the one who make complete, anyone waitting for the complete won't go further until I do the trigger\n");
+    tos_completion_post(&completion);
+    printf("trigger: I have done the completion\n");
+}
+
+int main(void)
+{
+    board_init();
+    tos_knl_init();
+    tos_completion_create(&completion);
+    (void)tos_task_create(&task_wait, "wait", entry_task_wait, NULL,
+                            3, stack_task_wait, STK_SIZE_TASK_WAIT, 0);
+    (void)tos_task_create(&task_trigger, "trigger", entry_task_trigger, NULL,
+                            4, stack_task_trigger, STK_SIZE_TASK_TRIGGER, 0);
+    tos_knl_start();
+}