diff --git a/stmhal/boards/stm32f401_af.csv b/stmhal/boards/stm32f401_af.csv
new file mode 100644
index 0000000000..db52ad65e1
--- /dev/null
+++ b/stmhal/boards/stm32f401_af.csv
@@ -0,0 +1,83 @@
+Port,,AF0,AF1,AF2,AF3,AF4,AF5,AF6,AF7,AF8,AF9,AF10,AF11,AF12,AF13,AF14,AF15,
+,,SYS_AF,TIM1/TIM2,TIM3/TIM4/TIM5,TIM9/TIM10/TIM11,I2C1/I2C2/I2C3,SPI1/SPI2/I2S2/SPI3/I2S3/SPI4,SPI2/I2S2/SPI3/I2S3,SPI3/I2S3/USART1/USART2,USART6,I2C2/I2C3,OTG1_FS,,SDIO,,,,
+PortA,PA0,,TIM2_CH1/TIM2_ETR,TIM5_CH1,,,,,USART2_CTS,,,,,,,,EVENTOUT,
+PortA,PA1,,TIM2_CH2,TIM5_CH2,,,,,USART2_RTS,,,,,,,,EVENTOUT,
+PortA,PA2,,TIM2_CH3,TIM5_CH3,TIM9_CH1,,,,USART2_TX,,,,,,,,EVENTOUT,
+PortA,PA3,,TIM2_CH4,TIM5_CH4,TIM9_CH2,,,,USART2_RX,,,,,,,,EVENTOUT,
+PortA,PA4,,,,,,SPI1_NSS,SPI3_NSS/I2S3_WS,USART2_CK,,,,,,,,EVENTOUT,
+PortA,PA5,,TIM2_CH1/TIM2_ETR,,,,SPI1_SCK,,,,,,,,,,EVENTOUT,
+PortA,PA6,,TIM1_BKIN,TIM3_CH1,,,SPI1_MISO,,,,,,,,,,EVENTOUT,
+PortA,PA7,,TIM1_CH1N,TIM3_CH2,,,SPI1_MOSI,,,,,,,,,,EVENTOUT,
+PortA,PA8,MCO_1,TIM1_CH1,,,I2C3_SCL,,,USART1_CK,,,OTG_FS_SOF,,,,,EVENTOUT,
+PortA,PA9,,TIM1_CH2,,,I2C3_SMBA,,,USART1_TX,,,OTG_FS_VBUS,,,,,EVENTOUT,
+PortA,PA10,,TIM1_CH3,,,,,,USART1_RX,,,OTG_FS_ID,,,,,EVENTOUT,
+PortA,PA11,,TIM1_CH4,,,,,,USART1_CTS,USART6_TX,,OTG_FS_DM,,,,,EVENTOUT,
+PortA,PA12,,TIM1_ETR,,,,,,USART1_RTS,USART6_RX,,OTG_FS_DP,,,,,EVENTOUT,
+PortA,PA13,JTMS_SWDIO,,,,,,,,,,,,,,,EVENTOUT,
+PortA,PA14,JTCK_SWCLK,,,,,,,,,,,,,,,EVENTOUT,
+PortA,PA15,JTDI,TIM2_CH1/TIM2_ETR,,,,SPI1_NSS,SPI3_NSS/I2S3_WS,,,,,,,,,EVENTOUT,
+PortB,PB0,,TIM1_CH2N,TIM3_CH3,,,,,,,,,,,,,EVENTOUT,
+PortB,PB1,,TIM1_CH3N,TIM3_CH4,,,,,,,,,,,,,EVENTOUT,
+PortB,PB2,,,,,,,,,,,,,,,,EVENTOUT,
+PortB,PB3,JTDO_SWO,TIM2_CH2,,,,SPI1_SCK,SPI3_SCK/I2S3_CK,,,I2C2_SDA,,,,,,EVENTOUT,
+PortB,PB4,JTRST,,TIM3_CH1,,,SPI1_MISO,SPI3_MISO,I2S3ext_SD,,I2C3_SDA,,,,,,EVENTOUT,
+PortB,PB5,,,TIM3_CH2,,I2C1_SMBA,SPI1_MOSI,SPI3_MOSI/I2S3_SD,,,,,,,,,EVENTOUT,
+PortB,PB6,,,TIM4_CH1,,I2C1_SCL,,,USART1_TX,,,,,,,,EVENTOUT,
+PortB,PB7,,,TIM4_CH2,,I2C1_SDA,,,USART1_RX,,,,,,,,EVENTOUT,
+PortB,PB8,,,TIM4_CH3,TIM10_CH1,I2C1_SCL,,,,,,,,SDIO_D4,,,EVENTOUT,
+PortB,PB9,,,TIM4_CH4,TIM11_CH1,I2C1_SDA,SPI2_NSS/I2S2_WS,,,,,,,SDIO_D5,,,EVENTOUT,
+PortB,PB10,,TIM2_CH3,,,I2C2_SCL,SPI2_SCK/I2S2_CK,,,,,,,,,,EVENTOUT,
+PortB,PB12,,TIM1_BKIN,,,I2C2_SMBA,SPI2_NSS/I2S2_WS,,,,,,,,,,EVENTOUT,
+PortB,PB13,,TIM1_CH1N,,,,SPI2_SCK/I2S2_CK,,,,,,,,,,EVENTOUT,
+PortB,PB14,,TIM1_CH2N,,,,SPI2_MISO,I2S2ext_SD,,,,,,,,,EVENTOUT,
+PortB,PB15,RTC_REFIN,TIM1_CH3N,,,,SPI2_MOSI/I2S2_SD,,,,,,,,,,EVENTOUT,
+PortC,PC0,,,,,,,,,,,,,,,,EVENTOUT,
+PortC,PC1,,,,,,,,,,,,,,,,EVENTOUT,
+PortC,PC2,,,,,,SPI2_MISO,I2S2ext_SD,,,,,,,,,EVENTOUT,
+PortC,PC3,,,,,,SPI2_MOSI/I2S2_SD,,,,,,,,,,EVENTOUT,
+PortC,PC4,,,,,,,,,,,,,,,,EVENTOUT,
+PortC,PC5,,,,,,,,,,,,,,,,EVENTOUT,
+PortC,PC6,,,TIM3_CH1,,,I2S2_MCK,,,USART6_TX,,,,SDIO_D6,,,EVENTOUT,
+PortC,PC7,,,TIM3_CH2,,,,I2S3_MCK,,USART6_RX,,,,SDIO_D7,,,EVENTOUT,
+PortC,PC8,,,TIM3_CH3,,,,,,USART6_CK,,,,SDIO_D0,,,EVENTOUT,
+PortC,PC9,MCO_2,,TIM3_CH4,,I2C3_SDA,I2S_CKIN,,,,,,,SDIO_D1,,,EVENTOUT,
+PortC,PC10,,,,,,,SPI3_SCK/I2S3_CK,,,,,,SDIO_D2,,,EVENTOUT,
+PortC,PC11,,,,,,I2S3ext_SD,SPI3_MISO,,,,,,SDIO_D3,,,EVENTOUT,
+PortC,PC12,,,,,,,SPI3_MOSI/I2S3_SD,,,,,,SDIO_CK,,,EVENTOUT,
+PortC,PC13,,,,,,,,,,,,,,,,EVENTOUT,
+PortC,PC14,,,,,,,,,,,,,,,,EVENTOUT,
+PortC,PC15,,,,,,,,,,,,,,,,EVENTOUT,
+PortD,PD0,,,,,,,,,,,,,,,,EVENTOUT,
+PortD,PD1,,,,,,,,,,,,,,,,EVENTOUT,
+PortD,PD2,,,TIM3_ETR,,,,,,,,,,SDIO_CMD,,,EVENTOUT,
+PortD,PD3,,,,,,SPI2_SCK/I2S2_CK,,USART2_CTS,,,,,,,,EVENTOUT,
+PortD,PD4,,,,,,,,USART2_RTS,,,,,,,,EVENTOUT,
+PortD,PD5,,,,,,,,USART2_TX,,,,,,,,EVENTOUT,
+PortD,PD6,,,,,,SPI3_MOSI/I2S3_SD,,USART2_RX,,,,,,,,EVENTOUT,
+PortD,PD7,,,,,,,,USART2_CK,,,,,,,,EVENTOUT,
+PortD,PD8,,,,,,,,,,,,,,,,EVENTOUT,
+PortD,PD9,,,,,,,,,,,,,,,,EVENTOUT,
+PortD,PD10,,,,,,,,,,,,,,,,EVENTOUT,
+PortD,PD11,,,,,,,,,,,,,,,,EVENTOUT,
+PortD,PD12,,,TIM4_CH1,,,,,,,,,,,,,EVENTOUT,
+PortD,PD13,,,TIM4_CH2,,,,,,,,,,,,,EVENTOUT,
+PortD,PD14,,,TIM4_CH3,,,,,,,,,,,,,EVENTOUT,
+PortD,PD15,,,TIM4_CH4,,,,,,,,,,,,,EVENTOUT,
+PortE,PE0,,,TIM4_ETR,,,,,,,,,,,,,EVENTOUT,
+PortE,PE1,,TIM1_CH2N,,,,,,,,,,,,,,EVENTOUT,
+PortE,PE2,TRACECLK,,,,,SPI4_SCK,,,,,,,,,,EVENTOUT,
+PortE,PE3,TRACED0,,,,,,,,,,,,,,,EVENTOUT,
+PortE,PE4,TRACED1,,,,,SPI4_NSS,,,,,,,,,,EVENTOUT,
+PortE,PE5,TRACED2,,,TIM9_CH1,,SPI4_MISO,,,,,,,,,,EVENTOUT,
+PortE,PE6,TRACED3,,,TIM9_CH2,,SPI4_MOSI,,,,,,,,,,EVENTOUT,
+PortE,PE7,,TIM1_ETR,,,,,,,,,,,,,,EVENTOUT,
+PortE,PE8,,TIM1_CH1N,,,,,,,,,,,,,,EVENTOUT,
+PortE,PE9,,TIM1_CH1,,,,,,,,,,,,,,EVENTOUT,
+PortE,PE10,,TIM1_CH2N,,,,,,,,,,,,,,EVENTOUT,
+PortE,PE11,,TIM1_CH2,,,,SPI4_NSS,,,,,,,,,,EVENTOUT,
+PortE,PE12,,TIM1_CH3N,,,,SPI4_SCK,,,,,,,,,,EVENTOUT,
+PortE,PE13,,TIM1_CH3,,,,SPI4_MISO,,,,,,,,,,EVENTOUT,
+PortE,PE14,,TIM1_CH4,,,,SPI4_MOSI,,,,,,,,,,EVENTOUT,
+PortE,PE15,,TIM1_BKIN,,,,,,,,,,,,,,EVENTOUT,
+PortH,PH0,,,,,,,,,,,,,,,,EVENTOUT,
+PortH,PH1,,,,,,,,,,,,,,,,EVENTOUT,