Tim 15 reset timer 1.

jf2 · ‎2016-05-10

Posted on May 10, 2016 at 18:52

Hi everyone.

I'M using a STM32F302CB. I'm using many timers in the application. I had a problem that I find a solution with 2 timers, but I don't understand the reason why.

Timer configuration:

The timer 1 is using to generate a PWM 20Khz with a varibale duty cycle updated every cycle.
Timer timer 15 channel 1 and 2 is using to generate a stepper signal (A and B).

Problem explanation:

When the timer 15 reaches the configured value, it is reset to 0. In cubeMX, the option Master/Slave Mode was at Enable (sync between this TIM (Master) and its slave (trhought TRGO)). At this moment, the timer TIM1 was also reset to 0. The TIM1 Master/slave mode is at disable (no sync...). TRGO and TRGO2 is at reset.

Whye timer 1 is resetting?

Any help or precision?

#no-hablo-hal

Tesla DeLorean · ‎2016-05-10

Posted on May 10, 2016 at 19:28

Present the code configuring the interconnection of the timers, I can't muddle through this description.

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jf2 · ‎2016-05-10

Posted on May 10, 2016 at 21:36

The line that generate this fail is in bold.

For timer 15:

void MX_TIM15_Init(void)

{

TIM_ClockConfigTypeDef sClockSourceConfig;

TIM_MasterConfigTypeDef sMasterConfig;

TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig;

TIM_OC_InitTypeDef sConfigOC;

htim15.Instance = TIM15;

htim15.Init.Prescaler = 1000;

htim15.Init.CounterMode = TIM_COUNTERMODE_UP;

htim15.Init.Period = 60;

htim15.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;

htim15.Init.RepetitionCounter = 0;

HAL_TIM_Base_Init(&htim15);

sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;

HAL_TIM_ConfigClockSource(&htim15, &sClockSourceConfig);

HAL_TIM_OC_Init(&htim15);

HAL_TIM_OnePulse_Init(&htim15, TIM_OPMODE_SINGLE);

sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;

sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE; // TIM_MASTERSLAVEMODE_ENABLE

HAL_TIMEx_MasterConfigSynchronization(&htim15, &sMasterConfig);

sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE;

sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE;

sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;

sBreakDeadTimeConfig.DeadTime = 0;

sBreakDeadTimeConfig.BreakState = TIM_BREAK_DISABLE;

sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_HIGH;

sBreakDeadTimeConfig.BreakFilter = 0;

sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;

HAL_TIMEx_ConfigBreakDeadTime(&htim15, &sBreakDeadTimeConfig);

sConfigOC.OCMode = TIM_OCMODE_TOGGLE;

sConfigOC.Pulse = 10;

sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;

sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;

sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;

sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;

sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;

HAL_TIM_OC_ConfigChannel(&htim15, &sConfigOC, TIM_CHANNEL_1);

sConfigOC.Pulse = 40;

HAL_TIM_OC_ConfigChannel(&htim15, &sConfigOC, TIM_CHANNEL_2);

}

For timer 1:

void MX_TIM1_Init(void)

{

TIM_ClockConfigTypeDef sClockSourceConfig;

TIM_MasterConfigTypeDef sMasterConfig;

TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig;

TIM_OC_InitTypeDef sConfigOC;

htim1.Instance = TIM1;

htim1.Init.Prescaler = 0;

htim1.Init.CounterMode = TIM_COUNTERMODE_UP;

htim1.Init.Period = 3600;

htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;

htim1.Init.RepetitionCounter = 0;

HAL_TIM_Base_Init(&htim1);

sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;

HAL_TIM_ConfigClockSource(&htim1, &sClockSourceConfig);

HAL_TIM_PWM_Init(&htim1);

sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;

sMasterConfig.MasterOutputTrigger2 = TIM_TRGO2_RESET;

sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;

HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig);

sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE;

sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE;

sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;

sBreakDeadTimeConfig.DeadTime = 50;

sBreakDeadTimeConfig.BreakState = TIM_BREAK_ENABLE;

sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_LOW;

sBreakDeadTimeConfig.BreakFilter = 0;

sBreakDeadTimeConfig.Break2State = TIM_BREAK2_DISABLE;

sBreakDeadTimeConfig.Break2Polarity = TIM_BREAK2POLARITY_LOW;

sBreakDeadTimeConfig.Break2Filter = 0;

sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_ENABLE;

HAL_TIMEx_ConfigBreakDeadTime(&htim1, &sBreakDeadTimeConfig);

sConfigOC.OCMode = TIM_OCMODE_PWM1;

sConfigOC.Pulse = 1800;

sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;

sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;

sConfigOC.OCFastMode = TIM_OCFAST_ENABLE;

sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;

sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;

HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_1);

HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_2);

}

jf2 · ‎2016-05-13

Posted on May 13, 2016 at 18:28

Hi,

Someone has specification or explanation? I need to understand.

Regards

JF

Tesla DeLorean · ‎2016-05-13

Posted on May 13, 2016 at 19:49

It is not obvious to me why it would reset TIM1 either, but it is not something I can spend time on.

I suspect you'll need to decompose the register settings as configured against the reference manual descriptions and see if it is a library issue, or some other quirk. It might take some digging.

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