/* ----------------------- Start implementation -----------------------------*/
BOOL
xMBPortTimersInit( USHORT usTim1Timerout50us )
{
        TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;

        RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
  
  TIM_DeInit(TIM2);

        /*
        3.5¸ö×Ö·ûê±¼äÇø·Ö2»í¬μÄÖ¡￡¬¼′½óêÕμ½μÄὸö×Ö·ûÖ®¼äê±¼ä¼ä¸ôD¡óú3.5¸ö×Ö·û
        ê±¼äê±èÏÎaêÇí¬ò»¸öÖ¡μÄ￡¬èç1û¼ä¸ô′óóú3.5¸ö×Ö·ûê±¼äÔòèÏÎaêÇ2»í¬Ö¡μÄ
        Ôúò»°ãμÄ′®¿úí¨DÅÖD￡¬·￠Ëí1¸ö×Ö·ûDèòa￡o1λÆeê¼Î»￡¬8λêy¾Yλ￡¬1λD￡Ñéλ(¿éÎT),
        1λí￡Ö1λ,×ü12 1+8+1+1 = 11λ￡¬3.5¸ö×Ö·ûê±¼ä¾íêÇ 3.5 * 11 = 38.5λ￡¬
        ¼ùèç2¨ìØÂêêÇ9600,ÄÇÃ′′«êä1λμÄê±¼äêÇ1000/9600 = 0.10416667(ms) ,
        ÕaÑù￡¬3.5¸ö×Ö·ûê±¼ä¾í′óÔ¼êÇ 4 ms ,¼′¶¨ê±Æ÷DèòaμÄÖD¶Ïê±¼ä
        */
#if 0        
        TIM_TimeBaseStructure.TIM_Period = 0x7E54;                  //CLK==24MHz ((1000000000/9600)*11*3.5)/(1000/24) == 0x7e54
        TIM_TimeBaseStructure.TIM_Prescaler = 0x3;
#endif
  // Õa¸ö¾íêÇÔ¤·ÖÆμÏμêy￡¬7200/72M = 0.0001,¼′ÿ100us¼ÆêyÖμ¼ó1
  //10us x 50 = 5ms,¼′5msÖD¶Ïò»′Π      
  TIM_TimeBaseStructure.TIM_Period = 50;
  TIM_TimeBaseStructure.TIM_Prescaler = (7200 - 1);       
        TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;
        TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
        TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
//         TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
        TIM_Cmd(TIM2, ENABLE);
        return TRUE;
}