ST STM32F31xx User Manual

General-purpose I/Os (GPIO)
UM1581
242/584
DocID023800 Rev 1
Function Description
Writes data to the specified GPIO data port.
Parameters
 GPIOx : where x can be (A, B, C, D, E or F) to select the
GPIO peripheral.
 GPIO_PinSource : specifies the pin for the Alternate
function. This parameter can be GPIO_PinSourcex where x
can be (0..15).
 GPIO_AF : selects the pin to be used as Alternate function.
This parameter can be one of the following value:
 GPIO_AF_0 : JTCK-SWCLK, JTDI, JTDO/TRACESW0,
JTMS-SWDAT, MCO, NJTRST, TRACED, TRACECK.
 GPIO_AF_1 : OUT, TIM2, TIM15, TIM16, TIM17.
 GPIO_AF_2 : COMP1_OUT, TIM1, TIM2, TIM3, TIM4,
TIM8, TIM15.
 GPIO_AF_3 : COMP7_OUT, TIM8, TIM15, Touch.
 GPIO_AF_4 : I2C1, I2C2, TIM1, TIM8, TIM16, TIM17.
 GPIO_AF_5 : IR_OUT, I2S2, I2S3, SPI1, SPI2, TIM8,
USART4, USART5
 GPIO_AF_6 : IR_OUT, I2S2, I2S3, SPI2, SPI3, TIM1,
TIM8
 GPIO_AF_7 : AOP2_OUT, CAN, COMP3_OUT,
COMP5_OUT, COMP6_OUT, USART1, USART2,
USART3.
 GPIO_AF_8 : COMP1_OUT, COMP2_OUT,
COMP3_OUT, COMP4_OUT, COMP5_OUT,
COMP6_OUT.
 GPIO_AF_9 : AOP4_OUT, CAN, TIM1, TIM8, TIM15.
 GPIO_AF_10 : AOP1_OUT, AOP3_OUT, TIM2, TIM3,
TIM4, TIM8, TIM17.
 GPIO_AF_11 : TIM1, TIM8.
 GPIO_AF_12 : TIM1.
 GPIO_AF_14 : USBDM, USBDP.
 GPIO_AF_15 : OUT.
Return values
 None.
Notes
 The pin should already been configured in Alternate Function
mode(AF) using GPIO_InitStruct->GPIO_Mode =
GPIO_Mode_AF
 Refer to the Alternate function mapping table in the device
datasheet for the detailed mapping of the system and
peripherals alternate function I/O pins.
12.3 GPIO Firmware driver defines
12.3.1 GPIO
GPIO
GPIO_Alternate_function_selection_define
 #define: GPIO_AF_0 ((uint8_t)0x00)

ST STM32F31xx Specifications

General

Brand	ST
Model	STM32F31xx
Category	Microcontrollers
Language	English