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同步操作将从 腾讯开源/TencentOS-tiny 强制同步,此操作会覆盖自 Fork 仓库以来所做的任何修改,且无法恢复!!!
确定后同步将在后台操作,完成时将刷新页面,请耐心等待。
#include "tos_k.h"
#include "mcu_init.h"
#define STK_SIZE_TASK_WRITER 512
#define STK_SIZE_TASK_READER 512
k_stack_t stack_task_writer[STK_SIZE_TASK_WRITER];
k_stack_t stack_task_reader[STK_SIZE_TASK_READER];
k_task_t task_writer;
k_task_t task_reader;
extern void entry_task_writer(void *arg);
extern void entry_task_reader(void *arg);
k_mutex_t critical_resource_locker;
static uint32_t critical_resource[3];
static void write_critical_resource(int salt)
{
size_t i = 0;
printf("writting critical resource:\n");
for (i = 0; i < 3; ++i) {
printf("%d\t", salt + i);
critical_resource[i] = salt + i;
}
printf("\n");
}
void entry_task_writer(void *arg)
{
size_t salt = 0;
k_err_t err;
while (K_TRUE) {
err = tos_mutex_pend(&critical_resource_locker);
if (err == K_ERR_NONE) {
write_critical_resource(salt);
tos_mutex_post(&critical_resource_locker);
}
tos_task_delay(1000);
++salt;
}
}
static void read_critical_resource(void)
{
size_t i = 0;
printf("reading critical resource:\n");
for (i = 0; i < 3; ++i) {
printf("%d\t", critical_resource[i]);
}
printf("\n");
}
void entry_task_reader(void *arg)
{
k_err_t err;
while (K_TRUE) {
err = tos_mutex_pend(&critical_resource_locker);
if (err == K_ERR_NONE) {
read_critical_resource();
tos_mutex_post(&critical_resource_locker);
}
tos_task_delay(1000);
}
}
int main(void)
{
board_init();
tos_knl_init();
tos_mutex_create(&critical_resource_locker);
(void)tos_task_create(&task_writer, "writer", entry_task_writer, NULL,
4, stack_task_writer, STK_SIZE_TASK_WRITER, 0);
(void)tos_task_create(&task_reader, "reader", entry_task_reader, NULL,
4, stack_task_reader, STK_SIZE_TASK_READER, 0);
tos_knl_start();
}
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