Posted on November 13, 2017 at 20:52Hello,
I have a project where a 3phase DC BLDC motor is required to be spined.
For now i have : - 3 hall sensors conected to CH1,2,3 of the TIMER2.
- 6 complementary pwms via Timer1
In the Timer2 CC1 handler i read the hall sensors, forming a 'index' value after which i compare with my lookup table
void TIM2_IRQHandler()
{
if (TIM_GetITStatus(TIM2, TIM_IT_CC1) != RESET)
{
TIM_ClearITPendingBit(TIM2, TIM_IT_CC1);
pdata= (GPIO_ReadInputData(GPIOA)& 0x0007);
UH = FORWARD_TABLE[pdata][0];
UL = FORWARD_TABLE[pdata][1];
VH = FORWARD_TABLE[pdata][2];
VL = FORWARD_TABLE[pdata][3];
WH = FORWARD_TABLE[pdata][4];
WL = FORWARD_TABLE[pdata][5];
bellow i set the 6 complementary PWM pins for the TIMER1
}
Do i need to set the timer1 pins in advance for the next position in the TIM2 CC1 IRQ ? Or i need to set them on the current hall read position?
