STM32_Fast_GPIO_Init

Easy way to configure and fast to initialize STM32 GPIO

Note. Now STM32F0-family is supported only. Supporting of STM32F4 and STM32F1-families will be added soon.

How to use

1. Copy fast_gpio_init.h to your project form fX directiory.
2. Include fast_gpio_init.h in c-file where you will initialize GPIO.
3. Create fgi_config.h.
4. Configure GPIO via fgi_config.h.
5. Call fast_gpio_init() to initialize GPIO.

Configuration

You shoutd configurate gpio with defines in fgi_config.h:

#define FGI_PROT_PIN_REG_VALUE

• PROT - port from A to F
• PIN - pin from 0 to 15
• REG - register of port
  • ODR: Output data bit. VALUE = 0 or 1
  • MODER: Mode of pin. VALUE = IN, OUT, AF (Alternate), AN (Analog)
  • OTYPER: Output type register. VALUE = PP (push-pull), OD (open-drain)
  • OSPEEDR: Output speed register. VALUE = LOW, MEDIUM, HIGH
  • PUPDR: Pull-up/pull-down register. VALUE = NOPULL, PULL_UP, PULL_DOWN
  • AFR: Alternate function low register. VALUE = AF0 .. AF7

For example, STM32F051R8T6: you want to configure GPIOA.1 as slow output (logic 1 at start) push-pull without pull-up and pull-down. Then you want to configure UART1 at GPIOB.6 (TX) and GPIOB.7 (RX).

// Tell that we will use GPIOA
#ifndef FGI_USE_PORTA
#define FGI_USE_PORTA
#endif

// GPIOA.1
#define FGI_A_1_MODER_OUT
#define FGI_A_1_OTYPER_PP
#define FGI_A_1_PUPDR_NOPULL
#define FGI_A_1_OSPEEDR_LOW
#define FGI_A_1_ODR_1

// Tell that we will use GPIOB
#ifndef FGI_USE_PORTB
#define FGI_USE_PORTB
#endif

// GPIOB.6 /UART1_TX/
#define FGI_B_6_MODER_AF
#define FGI_B_6_OTYPER_PP
#define FGI_B_6_PUPDR_PULL_UP
#define FGI_B_6_OSPEEDR_LOW
#define FGI_B_6_AFR_AF0

// GPIOB.7 /UART1_RX/
#define FGI_B_7_MODER_AF
#define FGI_B_7_OTYPER_PP
#define FGI_B_7_PUPDR_PULL_UP
#define FGI_B_7_OSPEEDR_LOW
#define FGI_B_7_AFR_AF0

Why it configures fast

We need to configure many pins on same port. Each port is configured by several registers: ODR, MODER, MODER, OTYPER, OSPEEDR, PUPDR, AFR[2]. By one writing in MODER we can set modes of all of 16 pins of port! Similar we can to write in other GPIO registers and configure one property of the all pins.

Version

0.1.0

Thanks to

EDS Company for allocated time for this project

License

MIT