1 Allocation of GPIOs and EXTI interrupts 2 3 PA0 WAKEUP EXTI0_IRQn 4 PA1 WIRQ1 5 PA2 SW_USR EXTI2_IRQn (connected to INT_HUM too, but Humidity driver does not use it) 6 PA3 WIRQ2 7 PA4 SPI1_NSS (slave) 8 PA5 SPI1_SCK (slave) 9 PA6 SPI1_MISO (slave) 10 PA7 SPI1_MOSI (slave) 11 PA8 I2C3_SCL 12 PA9 UART1_TX 13 PA10 UART1_RX 14 PA11 EXT_GPIO0 EXTI15_10_IRQn 15 PA12 EXT_GPIO1 EXTI15_10_IRQn 16 PA13 SWDIO 17 PA14 SWCLK 18 PA15 INT_BARO EXTI15_10_IRQn 19 20 PB0 I2S5_CK 21 PB1 INT_ACCG EXTI1_IRQn 22 PB2 LED1 (at reset it is used in input as BOOT1) 23 PB3 INT_ALS EXTI3_IRQn 24 PB4 I2C3_SDA 25 PB5 INT_HALL EXTI9_5_IRQn 26 PB6 I2C1_SCL (slave) 27 PB7 I2C1_SDA (slave) 28 PB8 I2S5_SD 29 PB9 I2C2_SDA 30 PB10 I2C2_SCL 31 PB12 SPI2_NSS 32 PB13 SPI2_SCK 33 PB14 SPI2_MISO 34 PB15 SPI2_MOSI 35 36 PC13 LED0 37
