Resolved! I want to get gpio clock by passing data into GPIO_BSRR registers by DMA transaction on capture compare timer event. It doesn't work.
My timer config: RCC_APB1ENR = RCC_APB1ENR_TIM3EN; TIM3_CR1 = (uint32_t)(TIM_CR1_CKD_CK_INT | TIM_CR1_CMS_CENTER_3); TIM3_CR1 &= ~TIM_CR1_UDIS; TIM3_CR2 &= ~TIM_CR2_CCDS; TIM3_ARR = (uint32_t)10000; TIM3_DIER = (uint32_t)(TIM_DIER_CC1DE | TIM_D...