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ST STM32F40 Series User Manual

ST STM32F40 Series
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RM0090 Contents
Doc ID 018909 Rev 4 8/1422
9.3.5 DMA streams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
9.3.6 Source, destination and transfer modes . . . . . . . . . . . . . . . . . . . . . . . 220
9.3.7 Pointer incrementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
9.3.8 Circular mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
9.3.9 Double buffer mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
9.3.10 Programmable data width, packing/unpacking, endianess . . . . . . . . . 225
9.3.11 Single and burst transfers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
9.3.12 FIFO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
9.3.13 DMA transfer completion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
9.3.14 DMA transfer suspension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
9.3.15 Flow controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
9.3.16 Summary of the possible DMA configurations . . . . . . . . . . . . . . . . . . . 232
9.3.17 Stream configuration procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
9.3.18 Error management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
9.4 DMA interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
9.5 DMA registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
9.5.1 DMA low interrupt status register (DMA_LISR) . . . . . . . . . . . . . . . . . . 235
9.5.2 DMA high interrupt status register (DMA_HISR) . . . . . . . . . . . . . . . . . 236
9.5.3 DMA low interrupt flag clear register (DMA_LIFCR) . . . . . . . . . . . . . . 237
9.5.4 DMA high interrupt flag clear register (DMA_HIFCR) . . . . . . . . . . . . . 237
9.5.5 DMA stream x configuration register (DMA_SxCR) (x = 0..7) . . . . . . . 239
9.5.6 DMA stream x number of data register (DMA_SxNDTR) (x = 0..7) . . . 242
9.5.7 DMA stream x peripheral address register (DMA_SxPAR) (x = 0..7) . 242
9.5.8 DMA stream x memory 0 address register (DMA_SxM0AR) (x = 0..7) 243
9.5.9 DMA stream x memory 1 address register (DMA_SxM1AR) (x = 0..7) 243
9.5.10 DMA stream x FIFO control register (DMA_SxFCR) (x = 0..7) . . . . . . 244
9.5.11 DMA register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
10 Interrupts and events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
10.1 Nested vectored interrupt controller (NVIC) . . . . . . . . . . . . . . . . . . . . . . 249
10.1.1 NVIC features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
10.1.2 SysTick calibration value register . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
10.1.3 Interrupt and exception vectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
10.2 External interrupt/event controller (EXTI) . . . . . . . . . . . . . . . . . . . . . . . . 249
10.2.1 EXTI main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
10.2.2 EXTI block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
10.2.3 Wakeup event management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257

Table of Contents

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ST STM32F40 Series Specifications

General IconGeneral
BrandST
ModelSTM32F40 Series
CategoryMicrocontrollers
LanguageEnglish

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