if(!pthread_mutex_lock(&UART_WriteMutex)){

int prevstate;

prevstate=uartDevWriteBuf_plc_state;

uartDevWriteBuf_plc_state = LOCKED;

pthread_mutex_unlock(&UART_WriteMutex);

%(publish_code)s

/* unlock plc buffer */

uartDevWriteBuf_plc_state = FULL;

/* wakeup task */

pthread_mutex_lock(&UART_WakeCondLock);

UART_WakeCondValue = 1;

pthread_cond_signal(&UART_WakeCond);

pthread_mutex_unlock(&UART_WakeCondLock);

}