static pwmOutputPort_t *pwmOutConfig(const timerHardware_t *timerHardware, uint8_t mhz, uint16_t period, uint16_t value)
{
pwmOutputPort_t *p = &pwmOutputPorts[allocatedOutputPortCount++];
configTimeBase(timerHardware->tim, period, mhz);
pwmGPIOConfig(timerHardware->gpio, timerHardware->pin, Mode_AF_PP);
pwmOCConfig(timerHardware->tim, timerHardware->channel, value);
if (timerHardware->outputEnable)
TIM_CtrlPWMOutputs(timerHardware->tim, ENABLE);
TIM_Cmd(timerHardware->tim, ENABLE);
switch (timerHardware->channel) {
case TIM_Channel_1:
p->ccr = &timerHardware->tim->CCR1;
break;
case TIM_Channel_2:
p->ccr = &timerHardware->tim->CCR2;
break;
case TIM_Channel_3:
p->ccr = &timerHardware->tim->CCR3;
break;
case TIM_Channel_4:
p->ccr = &timerHardware->tim->CCR4;
break;
}
p->period = period;
p->tim = timerHardware->tim;
return p;
}
static pwmPortData_t *pwmInConfig(uint8_t port, pwmCallbackPtr callback, uint8_t channel)
{
pwmPortData_t *p = &pwmPorts[port];
pwmTimeBase(timerHardware[port].tim, 0xFFFF);
pwmGPIOConfig(timerHardware[port].gpio, timerHardware[port].pin, 1);
pwmICConfig(timerHardware[port].tim, timerHardware[port].channel, TIM_ICPolarity_Rising);
TIM_Cmd(timerHardware[port].tim, ENABLE);
pwmNVICConfig(timerHardware[port].irq);
// set callback before configuring interrupts
p->callback = callback;
p->channel = channel;
switch (timerHardware[port].channel) {
case TIM_Channel_1:
TIM_ITConfig(timerHardware[port].tim, TIM_IT_CC1, ENABLE);
break;
case TIM_Channel_2:
TIM_ITConfig(timerHardware[port].tim, TIM_IT_CC2, ENABLE);
break;
case TIM_Channel_3:
TIM_ITConfig(timerHardware[port].tim, TIM_IT_CC3, ENABLE);
break;
case TIM_Channel_4:
TIM_ITConfig(timerHardware[port].tim, TIM_IT_CC4, ENABLE);
break;
}
return p;
}
static pwmPortData_t *pwmOutConfig(uint8_t port, uint16_t period, uint16_t value)
{
pwmPortData_t *p = &pwmPorts[port];
pwmTimeBase(timerHardware[port].tim, period);
pwmGPIOConfig(timerHardware[port].gpio, timerHardware[port].pin, 0);
pwmOCConfig(timerHardware[port].tim, timerHardware[port].channel, value);
// Needed only on TIM1
if (timerHardware[port].outputEnable)
TIM_CtrlPWMOutputs(timerHardware[port].tim, ENABLE);
TIM_Cmd(timerHardware[port].tim, ENABLE);
switch (timerHardware[port].channel) {
case TIM_Channel_1:
p->ccr = &timerHardware[port].tim->CCR1;
break;
case TIM_Channel_2:
p->ccr = &timerHardware[port].tim->CCR2;
break;
case TIM_Channel_3:
p->ccr = &timerHardware[port].tim->CCR3;
break;
case TIM_Channel_4:
p->ccr = &timerHardware[port].tim->CCR4;
break;
}
return p;
}
void ppmInConfig(const timerHardware_t *timerHardwarePtr)
{
ppmInit();
pwmInputPort_t *p = &pwmInputPorts[FIRST_PWM_PORT];
p->mode = INPUT_MODE_PPM;
p->timerHardware = timerHardwarePtr;
pwmGPIOConfig(timerHardwarePtr->gpio, timerHardwarePtr->pin, timerHardwarePtr->gpioInputMode);
pwmICConfig(timerHardwarePtr->tim, timerHardwarePtr->channel, TIM_ICPolarity_Rising);
timerConfigure(timerHardwarePtr, PPM_TIMER_PERIOD, PWM_TIMER_MHZ);
configureTimerCaptureCompareInterrupt(timerHardwarePtr, UNUSED_PPM_TIMER_REFERENCE, ppmEdgeCallback, ppmOverflowCallback);
}
static pwmPortData_t *pwmInConfig(uint8_t port, timerCCCallbackPtr callback, uint8_t channel)
{
pwmPortData_t *p = &pwmPorts[port];
const timerHardware_t *timerHardwarePtr = &(timerHardware[port]);
p->channel = channel;
pwmGPIOConfig(timerHardwarePtr->gpio, timerHardwarePtr->pin, Mode_IPD);
pwmICConfig(timerHardwarePtr->tim, timerHardwarePtr->channel, TIM_ICPolarity_Rising);
timerInConfig(timerHardwarePtr, 0xFFFF, PWM_TIMER_MHZ);
configureTimerCaptureCompareInterrupt(timerHardwarePtr, port, callback);
return p;
}
void ppmInConfig(const timerHardware_t *timerHardwarePtr)
{
ppmInit();
pwmInputPort_t *self = &pwmInputPorts[FIRST_PWM_PORT];
self->mode = INPUT_MODE_PPM;
self->timerHardware = timerHardwarePtr;
pwmGPIOConfig(timerHardwarePtr->gpio, timerHardwarePtr->pin, timerHardwarePtr->gpioInputMode);
pwmICConfig(timerHardwarePtr->tim, timerHardwarePtr->channel, TIM_ICPolarity_Rising);
timerConfigure(timerHardwarePtr, (uint16_t)PPM_TIMER_PERIOD, PWM_TIMER_MHZ);
timerChCCHandlerInit(&self->edgeCb, ppmEdgeCallback);
timerChOvrHandlerInit(&self->overflowCb, ppmOverflowCallback);
timerChConfigCallbacks(timerHardwarePtr, &self->edgeCb, &self->overflowCb);
}
void pwmInConfig(const timerHardware_t *timerHardwarePtr, uint8_t channel)
{
pwmInputPort_t *self = &pwmInputPorts[channel];
self->state = 0;
self->missedEvents = 0;
self->channel = channel;
self->mode = INPUT_MODE_PWM;
self->timerHardware = timerHardwarePtr;
pwmGPIOConfig(timerHardwarePtr->gpio, timerHardwarePtr->pin, timerHardwarePtr->gpioInputMode);
pwmICConfig(timerHardwarePtr->tim, timerHardwarePtr->channel, TIM_ICPolarity_Rising);
timerConfigure(timerHardwarePtr, (uint16_t)PWM_TIMER_PERIOD, PWM_TIMER_MHZ);
timerChCCHandlerInit(&self->edgeCb, pwmEdgeCallback);
timerChOvrHandlerInit(&self->overflowCb, pwmOverflowCallback);
timerChConfigCallbacks(timerHardwarePtr, &self->edgeCb, &self->overflowCb);
}
void pwmInConfig(const timerHardware_t *timerHardwarePtr, uint8_t channel)
{
pwmInputPort_t *p = &pwmInputPorts[channel];
p->state = 0;
p->missedEvents = 0;
p->channel = channel;
p->mode = INPUT_MODE_PWM;
p->timerHardware = timerHardwarePtr;
pwmGPIOConfig(timerHardwarePtr->gpio, timerHardwarePtr->pin, timerHardwarePtr->gpioInputMode);
pwmICConfig(timerHardwarePtr->tim, timerHardwarePtr->channel, TIM_ICPolarity_Rising);
timerConfigure(timerHardwarePtr, PWM_TIMER_PERIOD, PWM_TIMER_MHZ);
#ifdef STM32F303xC
// If overflow monitoring is enabled on STM32F3 then the IRQ handler TIM1_UP_TIM16_IRQHandler is continually called.
if (timerHardwarePtr->tim == TIM1) {
configureTimerCaptureCompareInterrupt(timerHardwarePtr, channel, pwmEdgeCallback, NULL);
return;
}
#endif
configureTimerCaptureCompareInterrupt(timerHardwarePtr, channel, pwmEdgeCallback, pwmOverflowCallback);
}
