本帖最后由 wazhzlp 于 2013-9-22 22:33 编辑
这个例程不知道大家有没有用过？
void main(void)
{
/* TIM1 Peripheral Configuration */
TIM1_DeInit();
/* Time Base configuration */
TIM1_TimeBaseInit(0, TIM1_COUNTERMODE_UP, 4095, 0);
/* Channel 1, 2 and 3 Configuration in TIMING mode */
/* TIM1_Pulse = 2047 */
TIM1_OC1Init(TIM1_OCMODE_TIMING, TIM1_OUTPUTSTATE_ENABLE, TIM1_OUTPUTNSTATE_ENABLE, 2047, TIM1_OCPOLARITY_HIGH, TIM1_OCNPOLARITY_HIGH, TIM1_OCIDLESTATE_SET, TIM1_OCNIDLESTATE_SET);
/* TIM1_Pulse = 1023 */
TIM1_OC2Init(TIM1_OCMODE_TIMING, TIM1_OUTPUTSTATE_ENABLE, TIM1_OUTPUTNSTATE_ENABLE, 1023, TIM1_OCPOLARITY_HIGH, TIM1_OCNPOLARITY_HIGH, TIM1_OCIDLESTATE_SET, TIM1_OCNIDLESTATE_SET);
/* TIM1_Pulse = 511 */
TIM1_OC3Init(TIM1_OCMODE_TIMING, TIM1_OUTPUTSTATE_ENABLE, TIM1_OUTPUTNSTATE_ENABLE, 511, TIM1_OCPOLARITY_HIGH, TIM1_OCNPOLARITY_HIGH, TIM1_OCIDLESTATE_SET, TIM1_OCNIDLESTATE_SET);
/* Automatic Output enable, Break, dead time and lock configuration*/
TIM1_BDTRConfig( TIM1_OSSISTATE_ENABLE, TIM1_LOCKLEVEL_OFF, 1, TIM1_BREAK_DISABLE, TIM1_BREAKPOLARITY_LOW, TIM1_AUTOMATICOUTPUT_ENABLE);
TIM1_CCPreloadControl(ENABLE);
TIM1_ITConfig(TIM1_IT_COM, ENABLE);
/* TIM1 counter enable */
TIM1_Cmd(ENABLE);
/* TIM4 Peripheral Configuration */
/* Time Base configuration */
TIM4_TimeBaseInit(TIM4_PRESCALER_128, 0xFF);
/*TIM4 counter enable */
TIM4_Cmd(ENABLE);
TIM4_ITConfig(TIM4_IT_UPDATE, ENABLE);
/* Main Output Enable */
TIM1_CtrlPWMOutputs(ENABLE);
enableInterrupts();
while (1);
}
就程序，有如下问题：
1、下面是TIM4的一个程序，是在180ms 触发一个 COM时间，当一个COM时间被触发之后程序就跳到了TIM的时间中断了，请看问题2
void TIM4_UPD_OVF_IRQHandler(void) interrupt 23
#endif /* _COSMIC_ */
{
TIM4_ClearITPendingBit(TIM4_IT_UPDATE);
if (TimeCounter == 11)
{
/* Generate TIM1 COM event by software */
TIM1_GenerateEvent(TIM1_EVENTSOURCE_COM);
TimeCounter=1;
/*
the TIM4 Update Interrupt occurs each 0.064ms ( Tui=(Period * Prescaler)/Fmaster = (256*128)/2Mhz = 16,384 ms )
so after 11 TIM4 Update Interrupts, 180ms have been spent (T= 11 * 16,384 = 180.2 ms)
*/
}
else
{
TimeCounter++;
}
}
2、TIM的com事件，还是比较简单，就是进行换相。如下，
void TIM1_CAP_COM_IRQHandler(void) interrupt 12
#endif /* _COSMIC_ */
{
/* Clear TIM1 COM pending bit */
TIM1_ClearITPendingBit(TIM1_IT_COM);
if(step == 1)
{
/* Next step: Step 2 Configuration ---------------------------- */
/* Channel3 configuration */
TIM1_CCxCmd(TIM1_CHANNEL_3, DISABLE);
TIM1_CCxNCmd(TIM1_CHANNEL_3, DISABLE);
/* Channel1 configuration */
TIM1_SelectOCxM(TIM1_CHANNEL_1, TIM1_FORCEDACTION_ACTIVE);
TIM1_CCxCmd(TIM1_CHANNEL_1, ENABLE);
TIM1_CCxNCmd(TIM1_CHANNEL_1, ENABLE);
/* Channel2 configuration */
TIM1_SelectOCxM(TIM1_CHANNEL_2, TIM1_FORCEDACTION_INACTIVE);
TIM1_CCxCmd(TIM1_CHANNEL_2, ENABLE);
TIM1_CCxNCmd(TIM1_CHANNEL_2, ENABLE);
step++;
}
else if(step == 2)
{
/* Next step: Step 3 Configuration ---------------------------- */
/* Channel2 configuration */
TIM1_SelectOCxM(TIM1_CHANNEL_2, TIM1_FORCEDACTION_INACTIVE);
TIM1_CCxCmd(TIM1_CHANNEL_2, ENABLE);
TIM1_CCxNCmd(TIM1_CHANNEL_2, ENABLE);
/* Channel3 configuration */
TIM1_SelectOCxM(TIM1_CHANNEL_3, TIM1_FORCEDACTION_ACTIVE);
TIM1_CCxCmd(TIM1_CHANNEL_3, ENABLE);
TIM1_CCxNCmd(TIM1_CHANNEL_3, ENABLE);
/* Channel1 configuration */
TIM1_CCxCmd(TIM1_CHANNEL_1, DISABLE);
TIM1_CCxNCmd(TIM1_CHANNEL_1, DISABLE);
step++;
}
else if(step == 3)
{
/* Next step: Step 4 Configuration ---------------------------- */
/* Channel3 configuration */
TIM1_SelectOCxM(TIM1_CHANNEL_3, TIM1_FORCEDACTION_ACTIVE);
TIM1_CCxCmd(TIM1_CHANNEL_3, ENABLE);
TIM1_CCxNCmd(TIM1_CHANNEL_3, ENABLE);
/* Channel2 configuration */
TIM1_CCxCmd(TIM1_CHANNEL_2, DISABLE);
TIM1_CCxNCmd(TIM1_CHANNEL_2, DISABLE);
/* Channel1 configuration */
TIM1_SelectOCxM(TIM1_CHANNEL_1, TIM1_FORCEDACTION_INACTIVE);
TIM1_CCxCmd(TIM1_CHANNEL_1, ENABLE);
TIM1_CCxNCmd(TIM1_CHANNEL_1, ENABLE);
step++;
}
else if(step == 4)
{
/* Next step: Step 5 Configuration ---------------------------- */
/* Channel3 configuration */
TIM1_CCxCmd(TIM1_CHANNEL_3, DISABLE);
TIM1_CCxNCmd(TIM1_CHANNEL_3, DISABLE);
/* Channel1 configuration */
TIM1_SelectOCxM(TIM1_CHANNEL_1, TIM1_FORCEDACTION_INACTIVE);
TIM1_CCxCmd(TIM1_CHANNEL_1, ENABLE);
TIM1_CCxNCmd(TIM1_CHANNEL_1, ENABLE);
/* Channel2 configuration */
TIM1_SelectOCxM(TIM1_CHANNEL_2, TIM1_FORCEDACTION_ACTIVE);
TIM1_CCxCmd(TIM1_CHANNEL_2, ENABLE);
TIM1_CCxNCmd(TIM1_CHANNEL_2, ENABLE);
step++;
}
else if (step == 5)
{
/* Next step: Step 6 Configuration ---------------------------- */
/* Channel3 configuration */
TIM1_SelectOCxM(TIM1_CHANNEL_3, TIM1_FORCEDACTION_INACTIVE);
TIM1_CCxCmd(TIM1_CHANNEL_3, ENABLE);
TIM1_CCxNCmd(TIM1_CHANNEL_3, ENABLE);
/* Channel1 configuration */
TIM1_CCxCmd(TIM1_CHANNEL_1, DISABLE);
TIM1_CCxNCmd(TIM1_CHANNEL_1, DISABLE);
/* Channel2 configuration */
TIM1_SelectOCxM(TIM1_CHANNEL_2, TIM1_FORCEDACTION_ACTIVE);
TIM1_CCxCmd(TIM1_CHANNEL_2, ENABLE);
TIM1_CCxNCmd(TIM1_CHANNEL_2, ENABLE);
step++;
}
else
{
/* Next step: Step 1 Configuration ---------------------------- */
/* Channel1 configuration */
TIM1_SelectOCxM(TIM1_CHANNEL_1, TIM1_FORCEDACTION_ACTIVE);
TIM1_CCxCmd(TIM1_CHANNEL_1, ENABLE);
TIM1_CCxNCmd(TIM1_CHANNEL_1, ENABLE);
/* Channel3 configuration */
TIM1_SelectOCxM(TIM1_CHANNEL_3, TIM1_FORCEDACTION_INACTIVE);
TIM1_CCxCmd(TIM1_CHANNEL_3, ENABLE);
TIM1_CCxNCmd(TIM1_CHANNEL_3, ENABLE);
/* Channel2 configuration */
TIM1_CCxCmd(TIM1_CHANNEL_2, DISABLE);
TIM1_CCxNCmd(TIM1_CHANNEL_2, DISABLE);
step = 1;
}
}
问题在于我不管怎么进行设置，都不可能达到这样的效果。是不是有什么问题，是不是TIM1的初始化设置有什么不对？》，有没有遇到和处理过该问题的兄弟，谢谢！
特别是像这样的库函数：
TIM1_SelectOCxM(TIM1_CHANNEL_1, TIM1_FORCEDACTION_ACTIVE);
TIM1_CCxCmd(TIM1_CHANNEL_1, ENABLE);
TIM1_CCxNCmd(TIM1_CHANNEL_1, ENABLE);
有没有人用过，这个可行嘛？
|
|
楼主
标题置顶
标题高亮
