DMA PWM outputs 2 pulses per buffer value (STM32l072xx) I'm trying to use DMA in circular mode to modify the duty cycle of a PWM output. Ultimately, I plan to use it to communicate with WS2812B chips (like others have done with the STM32F4 chips). However, in my early tests I've noticed that it seems to send two pulses per buffer value.For a simple example (full code at the end):#define BUFFER_SIZE 2
uint16_t buffer[BUFFER_SIZE];
buffer[0] = htim3.Init.Period * .5; // 50%
buffer[1] = htim3.Init.Period * .9; // 90%
HAL_TIM_PWM_Start_DMA(&htim3, TIM_CHANNEL_1, (uint32_t*)buffer, BUFFER_SIZE);There are 2 items in the buffer, one set at 50% duty cycle and the other at 90%. When circular mode is enabled, I would expect to see the PWM pulse to be alternating between the two. However, I see 2 pulses at 50% followed by 2 at 90%, and so on.I'm sure I'm missing something elementary here. How do I get the pulses to alternate 50%, 90%, 50%, etc?One of my thoughts was that the duplication could be caused by data width conversion on the
