Chapter 2 STM Arm IO Programming 1 STM

Chapter 2 STM Arm I/O Programming 1

STM 32 Arm Cortex Portfolio 2

STM 32 F 446 RE Arm Microcontroller Block Diagram 3

STM 32 Arm Cortex Portfolio 4

STM 32 F 446 RE Nucleo Board 5

STM 32 F 446 RE Nucleo Block Diagram 6

STM 32 F 446 RE Nucleo board top layout 7

Memory Map of STMF 446 RE 8

Memory map for STM 32 F 446 RE 9

STM 32 Arm Naming 10

STM 32 Cortex-M Portfolio 11

STM 32 F 4 xx LQFP 64 pinout used in Nucleo. F 446 RE board 12

STM 32 F 4 xx LQFP 100 pinout 13

Partial listing of Peripheral address map for STM 32 F 446 14

Partial listing of Peripheral address map for STM 32 F 446 15

STM Arm Bus Matrix 16

Some of the GPIO Registers in STM 32 F 4 xx Arm 17

The Data and Direction Registers and a Simplified View of an I/O pin 18

GPIOx_ODR Output Data Register (x=A, B, C, . . ) 19

GPIOx_MODER (GPIO Mode) for Direction Register (x=A, B, C, …) 20

RCC_AHB 1 ENR register bits to enable clock to I/O ports 21

User LED connection for STM 32 F 446 RE Nucleo board 22

GPIOx_BSRR (GPIO Bit Set Reset) Register 23

GPIOx_IDR (Input Data) Register 24

Switch connection to STM 32 F 4 -NUCLEO board 25

Connecting external switches to the microcontroller 26

GPIOx_OTYPER Register 27

GPIOx_OSPEEDR Register 28

GPIOx_PUPDR Register 29

STM 32 Arm Pin Multiplexing of Alternate Functions 30

GPIOx_AFRL (GPIOx Alternate Function Low) register to select alternate pin functions 31

GPIOx_AFRH (GPIOx Alternate Function High) register to select alternate pin functions 32

STM 32 F 446 RE Alternative Functions (AF 0 -AF 15) Pin Selection (Partial listing, see Appendix B for full listing) 33

Seven-segment Display 34

Assignments of port pins to each segments of a 7 -seg LED 35

Segment patterns for the 10 decimal digits for a common cathode 7 -seg LED 36

Connections between microcontroller and a two-digit 7 segment LED 37

Connections between microcontroller and 7 -segment LED with drivers 38