public link unit receive {}
driver.receive = receive;
public link bit OS_EventFlag = driver.OS_EventFlag;
public link bit 按键A按下 = driver.key0_press;
public link bit 按键B按下 = driver.key1_press;
public link bit 按键C按下 = driver.key2_press;
public link bit 按键D按下 = driver.key3_press;
public link bit OS_time = driver.OS_time;
public link void OS_init(){} = driver.OS_init;
public link void OS_run(){} = driver.OS_run;
