void pwmout_period_us(pwmout_t* obj, int us)
{
TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
float dc = pwmout_read(obj);
__HAL_TIM_DISABLE(&TimHandle);
// Update the SystemCoreClock variable
SystemCoreClockUpdate();
TimHandle.Init.Period = us - 1;
TimHandle.Init.Prescaler = (uint16_t)(SystemCoreClock / 1000000) - 1; // 1 µs tick
TimHandle.Init.ClockDivision = 0;
TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
HAL_TIM_PWM_Init(&TimHandle);
// Set duty cycle again
pwmout_write(obj, dc);
// Save for future use
obj->period = us;
__HAL_TIM_ENABLE(&TimHandle);
}
void pwmout_period_us(pwmout_t* obj, int us)
{
TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
float dc = pwmout_read(obj);
__HAL_TIM_DISABLE(&TimHandle);
TimHandle.Init.Period = us - 1;
TimHandle.Init.Prescaler = (uint16_t)(SystemCoreClock / 1000000) - 1; // 1 us tick
TimHandle.Init.ClockDivision = 0;
TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
if (HAL_TIM_PWM_Init(&TimHandle) != HAL_OK) {
error("Cannot initialize PWM");
}
// Set duty cycle again
pwmout_write(obj, dc);
// Save for future use
obj->period = us;
__HAL_TIM_ENABLE(&TimHandle);
}
void
vMBPortTimersDisable( )
{
__HAL_TIM_DISABLE(&htim1);
#if MB_TIMER_DEBUG == 1
PIO_Clear( &xTimerDebugPins[0] );
#endif
}
// Clear timer counter to 0, and then start the timer
int timer_reset_n_go(hacs_timer_t tim)
{
TIM_HandleTypeDef *htim = &tim_handles[tim];
__HAL_TIM_DISABLE(htim);
__HAL_TIM_SetCounter(htim, 0);
__HAL_TIM_ENABLE(htim);
return HACS_NO_ERROR;
}
void
vMBPortTimersDisable( )
{
/* Disable any pending timers. */
__HAL_TIM_DISABLE(&htim6);
__HAL_TIM_SetCounter(&htim6,0);
__HAL_TIM_DISABLE_IT(&htim6,TIM_IT_UPDATE);
__HAL_TIM_CLEAR_IT(&htim6,TIM_IT_UPDATE);
}
void
TCX_IRQHANDLER( void )
{
//HAL_UART_Transmit(&huart1, "T", 1, 0xFFFF);
__HAL_TIM_DISABLE(&htim1);
__HAL_TIM_CLEAR_IT(&htim1, TIM_IT_UPDATE);
#if MB_TIMER_DEBUG == 1
PIO_Clear( &xTimerDebugPins[0] );
#endif
( void )pxMBPortCBTimerExpired( );
}
void pwmout_period_us(pwmout_t* obj, int us)
{
TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
float dc = pwmout_read(obj);
__HAL_TIM_DISABLE(&TimHandle);
SystemCoreClockUpdate();
/* To make it simple, we use to possible prescaler values which lead to:
* pwm unit = 1us, period/pulse can be from 1us to 65535us
* or
* pwm unit = 500us, period/pulse can be from 500us to ~32.76sec
* Be careful that all the channels of a PWM shares the same prescaler
*/
if (us > 0xFFFF) {
obj->prescaler = 500;
} else {
obj->prescaler = 1;
}
TimHandle.Init.Prescaler = ((SystemCoreClock / 1000000) * obj->prescaler) - 1;
if (TimHandle.Init.Prescaler > 0xFFFF)
error("PWM: out of range prescaler");
TimHandle.Init.Period = (us - 1) / obj->prescaler;
if (TimHandle.Init.Period > 0xFFFF)
error("PWM: out of range period");
TimHandle.Init.ClockDivision = 0;
TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
if (HAL_TIM_PWM_Init(&TimHandle) != HAL_OK) {
error("Cannot initialize PWM\n");
}
// Save for future use
obj->period = us;
// Set duty cycle again
pwmout_write(obj, dc);
__HAL_TIM_ENABLE(&TimHandle);
}
void pwmout_period_ns (pwmout_t* obj, int pres)
{
TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
int ns = 2;
float dc = 0.5; // pwmout_read(obj);
__HAL_TIM_DISABLE(&TimHandle);
TimHandle.Init.Period = ns - 1;
TimHandle.Init.Prescaler = (uint16_t)(pres - 1); // (SystemCoreClock / 1000000) - 1; // 1 ns tick
TimHandle.Init.ClockDivision = 0;
TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
HAL_TIM_PWM_Init(&TimHandle);
// Save for future use
obj->period = ns;
// Set duty cycle again
pwmout_write_ex (obj, dc);
__HAL_TIM_ENABLE(&TimHandle);
}
void IMU::initializeTimerForUpdate(void) {
/* TIMx Peripheral clock enable */
__TIM3_CLK_ENABLE();
const uint32_t CounterClk = 10000; //Hz
const uint16_t OutputClk = 400; //Hz
samplingFrequencyInHz = OutputClk;
samplingPeriodInS = 1.0 / OutputClk;
//Prescaler = ((SystemCoreClock/2) / TIM3 counter clock) - 1
const uint16_t Prescaler = (((SystemCoreClock / 2) / CounterClk) - 1);
//ARR(TIM_Period) = (TIM3 counter clock / TIM3 output clock) - 1
const uint32_t Period = ((CounterClk / OutputClk) - 1);
/* Set TIMx instance */
TimHandle.Instance = TIM3;
TimHandle.Init.Period = Period;
TimHandle.Init.Prescaler = Prescaler;
TimHandle.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
TimHandle.Init.RepetitionCounter = 0;
if (HAL_TIM_Base_Init(&TimHandle) != HAL_OK) {
/* Initialization Error */
while (1) {
};
}
/* Enable the TIMx global Interrupt */
HAL_NVIC_EnableIRQ((IRQn_Type) TIM3_IRQn);
/* Set Interrupt Group Priority */
HAL_NVIC_SetPriority((IRQn_Type) TIM3_IRQn, 1, 2);
/* Start Channel1 */
if (HAL_TIM_Base_Start_IT(&TimHandle) != HAL_OK) {
/* Starting Error */
while (1) {
};
}
__HAL_TIM_DISABLE(&TimHandle);
}
int timer_stop(hacs_timer_t tim)
{
__HAL_TIM_DISABLE(&tim_handles[tim]);
return HACS_NO_ERROR;
}
void pwmout_period_us(pwmout_t* obj, int us)
{
TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
RCC_ClkInitTypeDef RCC_ClkInitStruct;
uint32_t PclkFreq;
uint32_t APBxCLKDivider;
float dc = pwmout_read(obj);
__HAL_TIM_DISABLE(&TimHandle);
// Get clock configuration
// Note: PclkFreq contains here the Latency (not used after)
HAL_RCC_GetClockConfig(&RCC_ClkInitStruct, &PclkFreq);
// Get the PCLK and APBCLK divider related to the timer
switch (obj->pwm) {
// APB1 clock
case PWM_2:
case PWM_3:
case PWM_4:
case PWM_5:
case PWM_12:
case PWM_13:
case PWM_14:
PclkFreq = HAL_RCC_GetPCLK1Freq();
APBxCLKDivider = RCC_ClkInitStruct.APB1CLKDivider;
break;
// APB2 clock
case PWM_1:
case PWM_8:
case PWM_9:
case PWM_10:
case PWM_11:
PclkFreq = HAL_RCC_GetPCLK2Freq();
APBxCLKDivider = RCC_ClkInitStruct.APB2CLKDivider;
break;
default:
return;
}
/* To make it simple, we use to possible prescaler values which lead to:
* pwm unit = 1us, period/pulse can be from 1us to 65535us
* or
* pwm unit = 500us, period/pulse can be from 500us to ~32.76sec
* Be careful that all the channels of a PWM shares the same prescaler
*/
if (us > 0xFFFF) {
obj->prescaler = 500;
} else {
obj->prescaler = 1;
}
// TIMxCLK = PCLKx when the APB prescaler = 1 else TIMxCLK = 2 * PCLKx
if (APBxCLKDivider == RCC_HCLK_DIV1)
TimHandle.Init.Prescaler = (uint16_t)(((PclkFreq) / 1000000) * obj->prescaler) - 1; // 1 us tick
else
TimHandle.Init.Prescaler = (uint16_t)(((PclkFreq * 2) / 1000000) * obj->prescaler) - 1; // 1 us tick
if (TimHandle.Init.Prescaler > 0xFFFF)
error("PWM: out of range prescaler");
TimHandle.Init.Period = (us - 1) / obj->prescaler;
if (TimHandle.Init.Period > 0xFFFF)
error("PWM: out of range period");
TimHandle.Init.ClockDivision = 0;
TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
if (HAL_TIM_PWM_Init(&TimHandle) != HAL_OK) {
error("Cannot initialize PWM\n");
}
// Save for future use
obj->period = us;
// Set duty cycle again
pwmout_write(obj, dc);
__HAL_TIM_ENABLE(&TimHandle);
}
void
vMBPortTimerClose( void )
{
__HAL_TIM_DISABLE_IT(&htim1, TIM_IT_UPDATE);
__HAL_TIM_DISABLE(&htim1);
}
void IMU::stopTimerUpdate(void) {
__HAL_TIM_DISABLE(&TimHandle);
}
void pwmout_period_us(pwmout_t* obj, int us)
{
TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
RCC_ClkInitTypeDef RCC_ClkInitStruct;
uint32_t PclkFreq;
uint32_t APBxCLKDivider;
float dc = pwmout_read(obj);
__HAL_TIM_DISABLE(&TimHandle);
// Get clock configuration
// Note: PclkFreq contains here the Latency (not used after)
HAL_RCC_GetClockConfig(&RCC_ClkInitStruct, &PclkFreq);
// Get the PCLK and APBCLK divider related to the timer
switch (obj->pwm) {
// APB1 clock
#if defined(TIM2_BASE)
case PWM_2:
#endif
#if defined(TIM3_BASE)
case PWM_3:
#endif
#if defined(TIM4_BASE)
case PWM_4:
#endif
#if defined(TIM5_BASE)
case PWM_5:
#endif
#if defined(TIM12_BASE)
case PWM_12:
#endif
#if defined(TIM13_BASE)
case PWM_13:
#endif
#if defined(TIM14_BASE)
case PWM_14:
#endif
PclkFreq = HAL_RCC_GetPCLK1Freq();
APBxCLKDivider = RCC_ClkInitStruct.APB1CLKDivider;
break;
// APB2 clock
#if defined(TIM1_BASE)
case PWM_1:
#endif
#if defined(TIM8_BASE)
case PWM_8:
#endif
#if defined(TIM9_BASE)
case PWM_9:
#endif
#if defined(TIM10_BASE)
case PWM_10:
#endif
#if defined(TIM11_BASE)
case PWM_11:
#endif
PclkFreq = HAL_RCC_GetPCLK2Freq();
APBxCLKDivider = RCC_ClkInitStruct.APB2CLKDivider;
break;
default:
return;
}
TimHandle.Init.Period = us - 1;
// TIMxCLK = PCLKx when the APB prescaler = 1 else TIMxCLK = 2 * PCLKx
if (APBxCLKDivider == RCC_HCLK_DIV1)
TimHandle.Init.Prescaler = (uint16_t)((PclkFreq) / 1000000) - 1; // 1 us tick
else
TimHandle.Init.Prescaler = (uint16_t)((PclkFreq * 2) / 1000000) - 1; // 1 us tick
TimHandle.Init.ClockDivision = 0;
TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
if (HAL_TIM_PWM_Init(&TimHandle) != HAL_OK) {
error("Cannot initialize PWM\n");
}
// Set duty cycle again
pwmout_write(obj, dc);
// Save for future use
obj->period = us;
__HAL_TIM_ENABLE(&TimHandle);
}
/**
* @brief Timer Capture Callback function for Frequency Calculations
*/
void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim)
{
__HAL_TIM_DISABLE(htim);
if(htim->Instance == TIM9 || htim->Instance == TIM12)
{
/* Get the Input Capture value */
// if(tim9_12_flag == ENABLE)
uwIC2Value = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_1);
// else
// uwIC2Value = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_2);
if (uwIC2Value != 0)
{
/* Duty cycle computation */
// if(tim9_12_flag == ENABLE)
uwDutyCycle = ((HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_2)) * 100) / uwIC2Value;
// else
// uwDutyCycle = ((HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_1)) * 100) / uwIC2Value;
/* uwFrequency computation
TIM4 counter clock = (RCC_Clocks.HCLK_Frequency)/2 */
if(htim->Instance == TIM9)
uwFrequency1 = (168000000UL)/(TimCapPsc+1) / uwIC2Value;
else if(htim->Instance == TIM12)
uwFrequency1 = (168000000UL)/(2*(TimCapPsc+1)) / uwIC2Value;
}
else
{
uwDutyCycle = 0;
uwFrequency1 = 0;
}
}
else if(htim->Instance == TIM10 || htim->Instance == TIM11 || htim->Instance == TIM14 || htim->Instance == TIM13)
{
if(uhCaptureIndex == 0)
{
/* Get the 1st Input Capture value */
uwIC2Value1 = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_1);
uhCaptureIndex = 1;
}
else if(uhCaptureIndex == 1)
{
/* Get the 2nd Input Capture value */
uwIC2Value2 = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_1);
/* Capture computation */
if (uwIC2Value2 > uwIC2Value1)
{
uwDiffCapture = (uwIC2Value2 - uwIC2Value1);
}
else /* (uwIC2Value2 <= uwIC2Value1) */
{
uwDiffCapture = ((TimCapPeriod - uwIC2Value1) + uwIC2Value2);
}
/* Frequency computation: for this example TIMx (TIM1) is clocked by
2xAPB2Clk */
uwFrequency = (2*HAL_RCC_GetPCLK2Freq()) / uwDiffCapture;
if(htim->Instance == TIM10 || htim->Instance == TIM11)
uwFrequency = uwFrequency/(TimCapPsc+1);
else
uwFrequency = uwFrequency/(2*(TimCapPsc+1));
uhCaptureIndex = 0;
}
}
__HAL_TIM_ENABLE(htim);
}