Interrupts in HAL core for STM32F1 broken or daft programmer??

mailhouse

Tue Nov 01, 2016 12:42 am

board is nucleo stm32f103rb, arduino.cc ide 1.6.12

any time i try to set an IRQ, the board crashes. comment out the IRQ assignment and it runs like a champ, albeit without interrupts. any help is appreciated.

if the NVIC_EnableIRQ is after the TIM_CR1_CEN, then it hangs on the NVIC assignment. as below, it hangs on the TIM_CR1_CEN.

what am i not getting?

void setup() {


// put your setup code here, to run once:

//Initialize serial and wait for port to open:

Serial.begin(9600);

while (!Serial) {

; // wait for serial port to connect.

}
Serial.println("Setting up TIM2");
RCC->APB1ENR |= RCC_APB1ENR_TIM2EN;
TIM2->SR = 0;   // Clear status register flags

TIM2->PSC = 2000; // Set prescaler

TIM2->ARR = 36000;  // set auto-reload register

TIM2->DIER = TIM_DIER_UIE;  // update interrupt
Serial.println("Enabling TIM2 IRQ");

NVIC_SetPriority(TIM2_IRQn, 0);

//NVIC_EnableIRQ(TIM2_IRQn);
Serial.println("Enabling TIM2");

TIM2->CR1 |= TIM_CR1_CEN;  // set control register 1 enable flag

Serial.println(TIM2->SR, BIN);
Serial.println("TIM2 setup complete");

Serial.println(TIM2->SR, BIN);

pinMode(13, OUTPUT);

}
void loop() {

// put your main code here, to run repeatedly:

//Serial.println(TIM2->CNT);

if (TIM2->CNT == 35000)

digitalWrite(13, HIGH);

if (TIM2->CNT == 36000)

digitalWrite(13, LOW);

}
void TM2_IRQHandler(void)

{

if(TIM2->SR & TIM_SR_UIF) // if UIF flag is set

{

TIM2->SR &= ~TIM_SR_UIF; // clear UIF flag

Serial.println("TM3 Interrupt");

}

}

RogerClark

Tue Nov 01, 2016 2:13 am

Which core are you using, the one in the stm32duino github account ?

mailhouse

Tue Nov 01, 2016 2:22 am

yes the github ones STM32F1 and STM32L4. should i be using something else?

RogerClark

Tue Nov 01, 2016 2:43 am

Thats the new official STM core, which has been designed by STM for use with the Nucleo board.

We also have the old repo / core based on the original Leaflabs LibMaple code.

This also has support for the Nucleo F103RB bit not the L476 nucleo etc

https://github.com/rogerclarkmelbourne/Arduino_STM32

But the LibMaple based repo does not use HAL, its a clean room implementation by Leaflabs because of licence restrictions when they wrote it in 2012

Anyway, if there is a bug in the Official STM core, you really need to log it as a bug in GitHub, or possibly post to one of the threads on this forum dedicated to that core.

This is the best thread to post to

viewtopic.php?f=48&t=1413&start=50

Because its monitored by Wi6Labs who actually wrote the code for STM

RogerClark

Tue Nov 01, 2016 2:44 am

Actually, if you don’t have a github account, I will log the issue for you and reference this thread

mailhouse

Tue Nov 01, 2016 1:54 pm

before i go reporting bugs, can someone else repeat the behavior?

RogerClark

Tue Nov 01, 2016 7:39 pm

Is it possible it is a bug in your code?

Does the same code compiled and run in another enviromment than the Arduino core and Arduino IDE?

mailhouse

Tue Nov 01, 2016 11:17 pm

its entirely possible. im very new to stm32, and new to 32bit mcu in general. its why im asking here first.

RogerClark

Tue Nov 01, 2016 11:38 pm

mailhouse wrote:its entirely possible. im very new to stm32, and new to 32bit mcu in general. its why im asking here first.

danieleff

Wed Nov 02, 2016 6:03 am

There is timer interrupt in timer.c, for example:

void blink(timer_id_e timer, uint32_t counter) { digitalWrite(13, !digitalRead(PB1)); } void setup() { pinMode(13, OUTPUT); TimerPulseInit(TIM2_E, 36000, 1000, blink); }

mailhouse

Sat Nov 12, 2016 2:24 am

danieleff wrote:There is timer interrupt in timer.c, for example:

void blink(timer_id_e timer, uint32_t counter) { digitalWrite(13, !digitalRead(PB1)); } void setup() { pinMode(13, OUTPUT); TimerPulseInit(TIM2_E, 36000, 1000, blink); }