UART2_RX1UART2_TX2ADC53UART1_TX4UART1_RX5PA16SWDIO7SWCLK8I2C_SCL9I2C_SDA10GND11RF12SPI1_MOSI13SPI1_MISO14SPI1_CLK15SPI1_NSS16GND17GND18PA819PA920BOOT21RST22GND23VDD24ADC425ADC326PB1227GND28PA029PB530ADC231ADC132