void MOD_TIM_Config(Mod_Master_Frame_TypeDef* aFrame)
{
TIM2_DeInit();
TIM2_TimeBaseInit(0x0F, 1500); //2ms comm response time
TIM2_UpdateRequestConfig(TIM2_UPDATESOURCE_REGULAR);
TIM2_GenerateEvent(TIM2_EVENTSOURCE_UPDATE);
TIM2_Cmd(DISABLE);
TIM2_ClearITPendingBit(TIM2_IT_UPDATE);
TIM2_ITConfig(TIM2_IT_UPDATE, ENABLE);
TIM2_ClearFlag(TIM2_FLAG_UPDATE);
TIM4_DeInit();
TIM4_TimeBaseInit(0x07, 126); //128 * 126 = 16128 = 2ms (8MHz), frame check
TIM4_UpdateRequestConfig(TIM4_UPDATESOURCE_REGULAR);
TIM4_GenerateEvent(TIM4_EVENTSOURCE_UPDATE);
TIM4_Cmd(DISABLE);
TIM4_ClearITPendingBit(TIM4_IT_UPDATE);
TIM4_ITConfig(TIM4_IT_UPDATE, ENABLE);
TIM4_ClearFlag(TIM4_FLAG_UPDATE);
}
/**
* @brief Timer4 Update/Overflow Interruption routine.
* @par Parameters:
* None
* @retval void None
* @par Required preconditions:
* None
* @par Called functions:
* None
*/
@near @interrupt @svlreg void TIM4_UPD_OVF_IRQHandler (void)
{
/* In order to detect unexpected events during development,
it is recommended to set a breakpoint on the following instruction.
*/
TIM4_ClearITPendingBit(TIM4_IT_UPDATE);
vtimer_UpdateHandler();
return;
}
@far @interrupt void TIM4_UPD_OVF_IRQHandler (void)
{
// 1ms 中断
if( ++counter_10ms >= 10 )
{
counter_10ms = 0;
flag_10ms_ok = 1;
}
TIM4_ClearITPendingBit(TIM4_IT_UPDATE);
return;
}
void SysTick_ISR(void)
{
static uint8_t s_count = 0;
uint8_t i;
/***********************************************
* 描述： 清楚基本定时器4中断标志位
*/
TIM4_ClearITPendingBit(TIM4_IT_UPDATE);
//TIM4_ClearFlag(TIM4_FLAG_UPDATE);
/***********************************************
* 描述： 每隔2ms进来1次
*/
if (s_uiDelayCount > 0) {
if (--s_uiDelayCount == 0) {
s_ucTimeOutFlag = 1;
}
}
if (++s_count < (10 / SYSTICK_PERIOD)) {
return;
}
s_count = 0;
/***********************************************
* 描述： 每隔10ms进来1次
*/
for (i = 0; i < TMR_COUNT; i++) {
Bsp_SoftTimerDec(&g_Tmr[i]);
}
/***********************************************
* 描述： 统计系统运行时间
*/
// g_iRunTime++; /* 全局运行时间每10ms增1, 248天一个循环 */
// if (g_iRunTime == 0x7FFFFFFF)
// {
// g_iRunTime = 0;
// }
/***********************************************
* 描述： 此函数在 bsp.c 中实现(可以为空)
*/
Bsp_RunPer10ms();
}
void Tim4_ClearITBit(void) {
TIM4_ClearITPendingBit(TIM4_IT_UPDATE);
}
void mod_int_frame_timeout()
{
uint16_t crc, val;
stopUART();
setTimeoutCheck(MOD_TIMER_PAUSE);
setFrameCheck(MOD_TIMER_STOP);
//exception Slave or unexception Slave
TIM4_ClearITPendingBit(TIM4_IT_UPDATE);
if (modFrame.rxframe[0] != modFrame.toAddr)
{
modFrame.rxCursor = 0;
modFrame.rxLen = 0;
modFrame.rxOK = FALSE;
setTimeoutCheck(MOD_TIMER_RESUM);
startRX();
} else {
modFrame.rxOK = TRUE;
modFrame.modState = Mod_State_ProcessReply;
modFrame.modEvent = Mod_Event_No;
if (modFrame.rxCursor < 2)
modFrame.rxCursor = 10;
crc = CRC16(modFrame.rxframe, modFrame.rxCursor - 2);
val = ((uint16_t)(modFrame.rxframe[modFrame.rxCursor - 1]) << 8) +
modFrame.rxframe[modFrame.rxCursor - 2];
if (crc != val)
{
if (modFrame.retryCount < MOD_MAX_RETRYS) //exceed max retry count
{
//resend , count ++
modFrame.retryCount ++;
modFrame.modState = Mod_State_Sending;
sendFrame(2, &modFrame);
return;
} else {
//commucation error
modFrame.retryCount = 0;
modFrame.linkFail = TRUE;
modFrame.modState = Mod_State_Idle;
modFrame.request = FALSE;
return;
}
} else {
//process reply
frameProcessData(&modFrame);
modFrame.retryCount = 0;
modFrame.linkFail = FALSE;
modFrame.modState = Mod_State_Idle;
modFrame.request = FALSE;
return;
}
}
}
@far @interrupt void TIM4_UPD_OVF_IRQHandler(void)
{
TIM4_ClearITPendingBit(TIM4_IT_UPDATE);
if(u8CommSendStep != 0)
{
if(u8CurSend500usCnt<200) u8CurSend500usCnt++;
switch(u8CommSendStep)
{
case LEAD_LOW:
if( u8CurSend500usCnt >= 12 )
{
u8CommSendStep = LEAD_HIGH;
u8CurSend500usCnt = 0;
GPIO_WriteLow(TxRxPort,TX);
}
else GPIO_WriteHigh(TxRxPort,TX);
break;
case LEAD_HIGH:
if( u8CurSend500usCnt >= 20 )
{
u8CommSendStep = DATA_LOW;
u8CurSend500usCnt = 0;
GPIO_WriteHigh(TxRxPort,TX);
}
else GPIO_WriteLow(TxRxPort,TX);
break;
case DATA_LOW:
if(u8CurSend500usCnt<2) return;
GPIO_WriteLow(TxRxPort,TX);
u8CurSend500usCnt = 0;
if(u8CurSendByte>=TOTAL_TX_BYTE)
{
stopTim4();
GPIO_Init(TxRxPort, RX, GPIO_MODE_IN_PU_IT); //开接收中断
u8CommSendStep = 0;
u8commStatus = 0;
return;
}
else u8CommSendStep = DATA_HIGH;
break;
case DATA_HIGH:
if(u8CurSend500usCnt >= 2)
{
if( ((TxBuf[u8CurSendByte] & BitMap[u8CurSendBit]) == 0 ) || (u8CurSend500usCnt>=6) )
{
GPIO_WriteHigh(TxRxPort,TX);
u8CommSendStep = DATA_LOW;
u8CurSend500usCnt = 0;
u8CurSendBit++;
if(u8CurSendBit>7)
{
u8CurSendBit = 0;
u8CurSendByte++;
}
}
else GPIO_WriteLow(TxRxPort,TX);
}
else GPIO_WriteLow(TxRxPort,TX);
break;
}
// resetTim4For500us();
}
else if( u8CommRevStep != 0)
{
u8CurRev500usCnt++;
if(u8CurRev500usCnt>50)
{
u8CommRevStep = 0;
}
// resetTim4For500us();
}
else stopTim4();
}
