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Importing.md
Layout.md
Libraries.md
Pins.md
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Pins.md

Pins

This document describes the different functions of each pin on the STM32 MCU. The highlighted functions are the recommended function to use for the pin, though not all of the recommendations must be followed. Some recommendations, however (such as those required for SWD programming/debugging) must be followed. See the datasheet for more details.

The MbedOS pin names are defined in the <![CDATA[]]>github repo<![CDATA[]]>.

Sorted by Pin Name

STM Pin Name MbedOS Pin Name(s) Function(s) Usage
PA0 PA_0/A0 USART2_CTS, ADC12_IN1 _
PA1 PA_1/A1 USART2_RTS_DE, ADC12_IN2 _
PA2 PA_2 USART2_TX, ADC1_IN3 _
PA3 PA_3 USART2_RX, SPI1_CLK, ADC1_IN4 _
PA4 PA_4/A2 SPI1_NSS, SPI3_NSS, USART2_CK, ADC2_IN17, DAC1_OUT1 _
PA5 PA_5/D13 SPI1_SCK, ADC2_IN13, DAC1_OUT2 _
PA6 PA_6/D12 SPI1_MISO, ADC2_IN3, DAC2_OUT1 _
PA7 PA_7/D11 SPI1_MOSI, ADC2_IN4 _
PA8 PA_8/D7 I2C3_SCL, I2C2_SDA, USART1_CK, FDCAN3_RX, ADC5_IN1 _
PA9 PA_9/D8 I2C3_SMBA, I2C2_SCL, USART1_TX, ADC5_IN2 _
PA10 PA_10/D2 I2C2_SMBA, SPI2_MISO, USART1_RX _
PA11 PA_11 SPI2_MOSI, USART1_CTS, FDCAN1_RX MAIN_CAN_RX
PA12 PA_12 USART1_RTS_DE, FDCAN1_TX MAIN_CAN_TX
PA13 PA_13 SWDIO SWDIO
PA14 PA_14 SWCLK SWCLK
PA15 PA_15 JTDI, I2C1_SCL, SPI1_NSS, SPI3_NSS, USART2_RX, UART4_RTS_DE, FDCAN3_TX JTDI (not used)
PB0 PB_0/A3 ADC3_IN12,ADC1_IN15 _
PB1 PB_1 ADC3_IN1, ADC1_IN12 _
PB2 PB_2 I2C3_SMBA, ADC2_IN12 _
PB3 PB_3/D3 SWO, SPI1_SCK, SPI3_SCK, USART2_TX, FDCAN3_RX SWO
PB4 PB_4/D5 SPI1_MISO, SPI3_MISO, USART2_RX, UART5_RTS_DE, FDCAN3_TX _
PB5 PB_5/D4 I2C1_SMBA, SPI1_MOSI, SPI3_MOSI, USART2_CK, I2C3_SDA, FDCAN2_RX, UART5_CTS _
PB6 PB_6/D10 USART1_TX, FDCAN2_TX USB_TX
PB7 PB_7 I2C4_SDA, I2C1_SDA, USART1_RX, USART4_CTS USB_RX
PB8 PB_8/D15 I2C1_SCL, USART3_TX, FDCAN1_RX, BOOT0 BOOT0
PB9 PB_9/D14 I2C1_SDA, USART3_TX, FDCAN1_TX, I2C2_SDA, UART5_TX _
PB10 PB_10/D6 USART3_TX, SPI1_SCK MAIN_CAN_STBY (can be on any pin)
PB11 PB_11 USART3_RX, ADC12_IN14 _
PB12 PB_12 I2C2_SMBA, SPI2_NSS, USART3_CK, FDCAN2_RX, ADC4_IN3, ADC1_IN11 _
PB13 PB_13 SPI2_SCK, USART3_CTS, FDCAN2_TX, ADC3_IN5 _
PB14 PB_14 SPI2_MISO, USART3_RTS_DE, ADC4_IN4, ADC1_IN5 _
PB15 PB_15 SPI2_MOSI, ADC4_IN5, ADC2_IN15 _
PC13 PC_13 _
PC14 PC_14 OSC32_IN OSC32_IN
PC15 PC_15 OSC32_OUT OSC32_OUT (not used)
PF0 PF_0 OSC_IN OSC_IN
PF1 PF_1 OSC_OUT OSC_OUT (not used)
PG10 PG_10 NRST NRST
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