Using Gpio Inputs And Outputs - Audio Weaver STM32F4 Series Setup Manual

DSP Concepts

Using GPIO Inputs and Outputs

The Discovery boards have a variety of LEDs, I/O pins, and a blue user button. Audio
Weaver has a GPIO block that allows either output to a GPIO pin or led or input from a
GPIO pin or the blue user button. However, the block has to be setup to access the
desired pin. Each pin and led on the board is labelled. The GPIO block numbers pins
starting with pin 1 and these need to be mapped to the actual pins on the board.
STM32F407VG-Discovery Board Available GPIO Pin Map
GPIO Block Board Input Pin
Pin Number
1 Blue User Button
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
STM32F4xx Discovery Board Users Guide
Board Output Pin
Name Name
LED6
PA1 LED3
PA2 LED5
PA3 PA1
PA8 PA2
PA15 PA3
PB0 PA8
PB1 PA15
PB4 PB0
PB5 PB1
PB7 PB4
PB8 PB5
PB11 PB7
PB12 PB8
PB13 PB11
PB14 PB12
PB15 PB13
PC1 PB14
PC2 PB15
PC4 PC1
PC5 PC2
PC6 PC4
PC8 PC5
PC9 PC6
PC11 PC8
PC13 PC9
PC14 PC11
PC15 PC13
PD0 PC14
PD1 PC15
PD2 PD0
PD3 PD1
PD6 PD2
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