Tim 15 reset timer 1.

[jf2]

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]

Posted on May 10, 2016 at 19:28

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

[jf2]

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]

Posted on May 13, 2016 at 18:28

Hi,

Someone has specification or explanation? I need to understand.RegardsJF

[Tesla DeLorean]

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.