Solved
PWM Dim
I am trying a PWM output with jumper connectors.
when mains fail(input supply)
PWM is on indicated by a lamp and OFF when there is a supply .
in between if the supply is OFF and Lamp is in ON there is a jumper connect to PA6 (input)of stm32c011f6p6.if the input is set to 1 it should make the PWM with half duty cycle.
I couldn't understand that my half duty cycle part is blinking once the input supply OFF and PA6 is set till the input supply is 0.1 and below 0.1 its getting stable half duty cycle. can one find the error I made please.
Mains is input supply 1.5v Vbat is 0.9v
12 Mhz internal clock
can one find the error I made please.
if (Mains > 0.1)
{
if ((Mains < 1) && (Vbat > 0.9))
{
TIM1->CCR4 = TIM1->ARR;
HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_4);
Set_LED(0);
//Batt_Chrge(0);
HAL_Delay(100);
}
else if (Mains > 1)
{
TIM1->CCR4 = 0;
HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_4);
HAL_Delay(100);
}
if (Mains < 1)
{
if(HAL_GPIO_ReadPin(Dim_GPIO_Port, Dim_Pin) == GPIO_PIN_SET)
{
// Code for dimming when Mains is below 1V or Dim_Pin is set
TIM1->CCR4 = TIM1->ARR / 2; // Set PWM duty cycle to half
HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_4);
//Batt_Chrge(0);
}
else
{
// Code for turning off dimming when Mains is 1V or higher and Dim_Pin is not set
TIM1->CCR4 = TIM1->ARR;
HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_4);
Set_LED(0);
//Batt_Chrge(0);
HAL_Delay(100);
}
}
}
***********************************************
TIMER CONFIG
static void MX_TIM1_Init(void)
{
/* USER CODE BEGIN TIM1_Init 0 */
/* USER CODE END TIM1_Init 0 */
TIM_MasterConfigTypeDef sMasterConfig = {0};
TIM_OC_InitTypeDef sConfigOC = {0};
TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig = {0};
/* USER CODE BEGIN TIM1_Init 1 */
/* USER CODE END TIM1_Init 1 */
htim1.Instance = TIM1;
htim1.Init.Prescaler = 0;
htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
htim1.Init.Period = 25000;
htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim1.Init.RepetitionCounter = 0;
htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_PWM_Init(&htim1) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterOutputTrigger2 = TIM_TRGO2_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig) != HAL_OK)
{
Error_Handler();
}
sConfigOC.OCMode = TIM_OCMODE_PWM1;
sConfigOC.Pulse = 1000;
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_4) != HAL_OK)
{
Error_Handler();
}
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.BreakAFMode = TIM_BREAK_AFMODE_INPUT;
sBreakDeadTimeConfig.Break2State = TIM_BREAK2_DISABLE;
sBreakDeadTimeConfig.Break2Polarity = TIM_BREAK2POLARITY_HIGH;
sBreakDeadTimeConfig.Break2Filter = 0;
sBreakDeadTimeConfig.Break2AFMode = TIM_BREAK_AFMODE_INPUT;
sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;
if (HAL_TIMEx_ConfigBreakDeadTime(&htim1, &sBreakDeadTimeConfig) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM1_Init 2 */
/* USER CODE END TIM1_Init 2 */
}
