Everything relating to using STM32 boards with the Arduino IDE and alternatives
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Code: Select all
LPTIM_HandleTypeDef hlptim1;
static void MX_LPTIM1_Init(void)
{
/* USER CODE BEGIN LPTIM1_Init 0 */
/* USER CODE END LPTIM1_Init 0 */
/* USER CODE BEGIN LPTIM1_Init 1 */
/* USER CODE END LPTIM1_Init 1 */
hlptim1.Instance = LPTIM1;
hlptim1.Init.Clock.Source = 0x00;
hlptim1.Init.Clock.Prescaler = 0x00;
hlptim1.Init.Trigger.Source = 0x00;
hlptim1.Init.OutputPolarity = 0x00;
hlptim1.Init.UpdateMode = 0x00;
hlptim1.Init.CounterSource = 0x00;
if (HAL_LPTIM_Init(&hlptim1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN LPTIM1_Init 2 */
/* USER CODE END LPTIM1_Init 2 */
}
void setup() {
// put your setup code here, to run once:
}
void loop() {
// put your main code here, to run repeatedly:
}Code: Select all
C:\Users\Hamady\AppData\Local\Temp\.arduinoIDE-unsaved2022917-9196-1u6cgbu.al1v\sketch_oct17b\sketch_oct17b.ino:2:1: error: 'LPTIM_HandleTypeDef' does not name a type; did you mean 'TIM_HandleTypeDef'?
2 | LPTIM_HandleTypeDef hlptim1;
| ^~~~~~~~~~~~~~~~~~~
| TIM_HandleTypeDef
C:\Users\Hamady\AppData\Local\Temp\.arduinoIDE-unsaved2022917-9196-1u6cgbu.al1v\sketch_oct17b\sketch_oct17b.ino: In function 'void MX_LPTIM1_Init()':
C:\Users\Hamady\AppData\Local\Temp\.arduinoIDE-unsaved2022917-9196-1u6cgbu.al1v\sketch_oct17b\sketch_oct17b.ino:14:3: error: 'hlptim1' was not declared in this scope
14 | hlptim1.Instance = LPTIM1;
| ^~~~~~~
C:\Users\Hamady\AppData\Local\Temp\.arduinoIDE-unsaved2022917-9196-1u6cgbu.al1v\sketch_oct17b\sketch_oct17b.ino:21:7: error: 'HAL_LPTIM_Init' was not declared in this scope; did you mean 'HAL_LIN_Init'?
21 | if (HAL_LPTIM_Init(&hlptim1) != HAL_OK)
| ^~~~~~~~~~~~~~
| HAL_LIN_Init
exit status 1
Compilation error: 'LPTIM_HandleTypeDef' does not name a type; did you mean 'TIM_HandleTypeDef'?To be honest i dont understand this anwserdannyf wrote: Mon Oct 17, 2022 8:36 pm In situations like this, you should think about a few questions.
1. Are there other solutions?
2. Is the timer able to wake up the chip?
3. What's the clocking arrangement?
4. How big or small is the desired interval?
5. Given 3 and 4 above, can the timer do it in one shot or you need to wake up the chip multiple times?
...
Typically it is fairly simple. If the timer is able to generate an interrupt on a compare match, a free running timer would do.
If not, you generally load up the timer with an offset...
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void Update_IT_callback(void)
{ // Toggle pin. 10hz toogle --> 5Hz PWM
digitalWrite(pin, !digitalRead(pin));
}
void setup()
{
// configure pin in output mode for led
pinMode(pin, OUTPUT);
// init timer
#if defined(TIM1)
TIM_TypeDef *Instance = TIM1;
#else
TIM_TypeDef *Instance = TIM2;
#endif
// Instantiate HardwareTimer object. Thanks to 'new' instanciation, HardwareTimer is not destructed when setup() function is finished.
HardwareTimer *MyTim = new HardwareTimer(Instance);
MyTim->pause();
MyTim->setOverflow(10, HERTZ_FORMAT); // 10 Hz
MyTim->attachInterrupt(Update_IT_callback);
MyTim->refresh();
MyTim->resume();
}Thanks you but i need a timer that need to work in stop mode and it is not possibe with normal timerag123 wrote: Tue Oct 18, 2022 2:33 am try the normal Hardware Timers
https://github.com/stm32duino/wiki/wiki ... er-library
those works well and doesn't use much power
https://github.com/stm32duino/STM32Exam ... llback.inoCode: Select all
void Update_IT_callback(void) { // Toggle pin. 10hz toogle --> 5Hz PWM digitalWrite(pin, !digitalRead(pin)); } void setup() { // configure pin in output mode for led pinMode(pin, OUTPUT); // init timer #if defined(TIM1) TIM_TypeDef *Instance = TIM1; #else TIM_TypeDef *Instance = TIM2; #endif // Instantiate HardwareTimer object. Thanks to 'new' instanciation, HardwareTimer is not destructed when setup() function is finished. HardwareTimer *MyTim = new HardwareTimer(Instance); MyTim->pause(); MyTim->setOverflow(10, HERTZ_FORMAT); // 10 Hz MyTim->attachInterrupt(Update_IT_callback); MyTim->refresh(); MyTim->resume(); }