Board Pinouts¶
The MCU PinNames mappings are listed as [PortName_Bit]. When available, the alternative functions are described (as extra ADC channels, CAN Bus or I2S for audio for instance).
mbed target pin-mapping
In the mbed platform, the pin mappings are done in the SensorIO target (mbed-os/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F413xH/TARGET_SENSORIO/PinNames.h)
OnBoard interfaces¶
RGB LED¶
| PinName | Signal Name | Description / Alternative functions |
|---|---|---|
| PF_3 | RED_LED | DigitalOut / TIM5_CH1 (PWM) |
| PF_4 | GREEN_LED | DigitalOut / TIM5_CH2 (PWM) |
| PF_5 | BLUE_LED | DigitalOut / TIM5_CH3 (PWM) |
User Button¶
| PinName | Signal Name | Description / Alternative functions |
|---|---|---|
| PC_13 | BUTTON_1 | DigitalIn / InterruptIn |
IRQ on input change
In the STM32F4XX, all the I/Os can be configured to trigger interrupts when configured as inputs (InterruptIn in mbed)
Relays¶
| PinName | Signal Name | Description |
|---|---|---|
| PG_2 | RELAY_1 | DigitalOut |
| PG_3 | RELAY_2 | DigitalOut |
Sensors¶
| PinName | Signal Name | Description |
|---|---|---|
| PF_0 | I2C_SDA | Sensors I2C data line |
| PF_1 | I2C_SCL | Sensors I2C clock line |
| PD_4 | ACCEL_INT1 | BMA253 IRQ #1 |
| PD_5 | ACCEL_INT2 | BMA253 IRQ #2 |
| PG_13 | LTR303_INT | Luminosity sensor IRQ |
OLED display¶
| PinName | Signal Name | Description |
|---|---|---|
| PE_6 | OLED_MOSI | SPI4 data |
| PE_2 | OLED_SCK | SPI4 clock |
| PE_5 | OLED_D/C# | Data / #command |
| PE_3 | OLED_RESET | Display reset line |
| PE_4 | OLED_CS | SPI4 Chip Select |
Micro-SD / MMC¶
| PinName | Signal Name | Description |
|---|---|---|
| PC_8 | MMC_D0 | MMC Data 0 |
| PC_9 | MMC_D1 | MMC Data 1 |
| PC_10 | MMC_D2 | MMC Data 2 |
| PC_11 | MMC_D3/CD | MMC Data 3 / Card Detect |
| PC_12 | MMC_CLK | MMC bus clock |
| PD_2 | MMC_CMD | MMC command / data |
CC3120 WiFi¶
| PinName | Signal Name | Description |
|---|---|---|
| PE_8 | CC_NRESET | CC3120 #Reset |
| PE_9 | CC_IRQ | CC3120 Interrupt |
| PE_10 | CC_RESTORE | Ext.Flash Factory Restore |
| PA_4 | CC_SPI_CS | SPI1_NSS (Chip Select) |
| PA_5 | CC_SPI_CLK | SPI1 Clock |
| PA_6 | CC_SPI_MISO | SPI1 MISO |
| PA_7 | CC_SPI_MOSI | SPI1 MOSI |
Expansion interfaces¶
MikroBUS¶
Shared signals
The I2C (I2C1) and SPI (SPI5) buses are shared by both connectors (but not with other interfaces).
This should be taken in account if these pins want to be used as digital IN/OUT (in this case, only one MikroBUS interface should be used).
MB1¶
| PinName | Signal Name | Description / Alternative functions |
|---|---|---|
| PB_6 | MB_I2C_SCL | I2C1 Clock (shared with MB2) |
| PB_7 | MB_I2C_SDA | I2C1 Data (shared with MB2) |
| PE_12 | MB_SPI_SCK | SPI5 Clock (shared with MB2) |
| PE_13 | MB_SPI_MISO | SPI5 MISO (shared with MB2) |
| PE_14 | MB_SPI_MOSI | SPI5 MOSI (shared with MB2) |
| PB_1 | MB1_SPI_CS | SPI Chip Select / PWM / AnalogIn (ADC1_IN9) |
| PG_14 | MB1_RST | Reset / UART6_TX |
| PD_0 | MB2_INT | IRQ (InterruptIn) / UART4_RX / CAN1_RX |
| PC_1 | MB1_AN | AnalogIn (ADC1_IN11) |
| PB_14 | MB1_PWM | PWM out |
| PF_6 | MB1_UART_RX | UART7 RXD / PWM |
| PF_7 | MB1_UART_TX | UART7 TXD / PWM |
MB2¶
| PinName | Signal Name | Description / Alternative functions |
|---|---|---|
| PB_6 | MB_I2C_SCL | I2C1 clock (shared with MB1) |
| PB_7 | MB_I2C_SDA | I2C1 data (shared with MB1) |
| PE_12 | MB_SPI_SCK | SPI5 Clock (shared with MB1) |
| PE_13 | MB_SPI_MISO | SPI5 MISO (shared with MB1) |
| PE_14 | MB_SPI_MOSI | SPI5 MOSI (shared with MB1) |
| PE_11 | MB2_SPI_CS | SPI Chip Select / PWM |
| PG_15 | MB2_RST | Reset / I/O |
| PC_6 | MB2_INT | IRQ (InterruptIn) / PWM / I2C_SCL / I2S2_MCK / USART6_TX |
| PC_2 | MB2_AN | AnalogIn (ADC1_IN12) |
| PB_15 | MB2_PWM | PWM out / I2S2_SD |
| PB_12 | MB2_UART_RX | UART5 RXD / I2S2_CK / CAN2_RX |
| PB_13 | MB2_UART_TX | UART5 TXD / PWM / I2S2_CK / CAN2_TX |
Grove¶
Pin multiplexing
This interface multiplexes the UART, I2C, Analog and PWM lines to the external connectors. Please check the Grove description for information on how to configure them.
Grove 1¶
| PinName | Signal Name | Description / Alternative functions |
|---|---|---|
| I2C: | ||
| PF_14 | I2CFMP1_SCL | I2C Clock (shared with Grove 2) |
| PF_15 | I2CFMP1_SDA | I2C Data (shared with Grove 2) |
| UART: | ||
| PE_0 | GROVE1_RXD | UART8_RX |
| PE_1 | GROVE1_TXD | UART8_TX |
| Analog: | ||
| PC_3 | GROVE1_AI1 | Pin#1 Analog Input (ADC1_IN13) |
| PC_4 | GROVE1_AI2 | Pin#2 Analog Input (ADC1_IN14) |
| PWM / I/O: | ||
| PD_14 | GROVE1_P1_PWM | Pin#1 PWM out |
| PD_15 | GROVE1_P2_PWM | Pin#2 PWM out |
| MUX & Power control | ||
| PD_10 | GROVE1_MUXA | Multiplexer pin A |
| PD_11 | GROVE1_MUXB | Multiplexer pin B |
| PG_9 | GROVE1_SW_5V | VCC control switch (3.3V/5V) |
Grove 2¶
| PinName | Signal Name | Description / Alternative functions |
|---|---|---|
| I2C: | ||
| PF_14 | I2CFMP1_SCL | I2C Clock (shared with Grove 1) |
| PF_15 | I2CFMP1_SDA | I2C Data (shared with Grove 1) |
| UART: | ||
| PG_0 | GROVE2_RXD | UART9_RX |
| PG_1 | GROVE2_TXD | UART9_TX |
| Analog: | ||
| PB_0 | GROVE2_AI1 | Pin#1 Analog Input (ADC1_IN8) |
| PC_5 | GROVE2_AI2 | Pin#2 Analog Input (ADC1_IN15) |
| PWM / I/O: | ||
| PD_12 | GROVE2_P1_PWM | Pin#1 PWM out |
| PD_13 | GROVE2_P2_PWM | Pin#2 PWM out |
| MUX & Power control | ||
| PG_4 | GROVE1_MUXA | Multiplexer pin A |
| PG_5 | GROVE1_MUXB | Multiplexer pin B |
| PG_10 | GROVE1_SW_5V | VCC control switch (3.3V/5V) |
Arduino R3¶
Analog multiplexing
This interface uses an analog multiplexer for the Analog Inputs A0 to A5. Check the Arduino interface for more information.
| PinName | Signal Name | Description / Alternative functions |
|---|---|---|
| PB_4 (1) | ARD_A4/SDA | I2C3_SDA / PWM / UART7_TX / CAN3_TX |
| PA_8 (1) | ARD_A5/SCL | I2C3_SCL / PWM / UART7_TX / CAN3_RX |
| PA_1 | ARD_D0/RX | UART4_RX / PWM / ADC1_IN1 |
| PA_0 | ARD_D1/TX | UART4_TX / PWM / ADC1_IN0 |
| PF_9 | ARD_D2 | UART8_RX / PWM |
| PA_2 | ARD_D3 | PWM (TIM9_CH1) |
| PF_10 | ARD_D4 | PWM (TIM5_CH4) |
| PA_3 | ARD_D5 | PWM (TIM9_CH2) / UART2_TX / I2S2_CKIN / ADC1_IN2 |
| PB_10 | ARD_D6 | PWM (TIM2_CH3) / I2S3_MCK / USART3_TX |
| PF_11 | ARD_D7 | I/O |
| PF_12 | ARD_D8 | I/O |
| PB_11 | ARD_D9 | PWM (TIM2_CH4) / I2S3_MCK |
| PA_11 | ARD_D10/CS | SPI2_NSS (Chip Select) / PWM / CAN1_RX / UART6_TX |
| PA_10 | ARD_D11/MOSI | SPI2_MOSI / PWM / UART1_RX |
| PA_12 | ARD_D12/MISO | SPI2_MISO / UART6_RX/ CAN1_TX/ UART4_RX |
| PC_0 | ARD_ANALOG_IN | Analog inputs [A0:A5] + Calib LOW/HIGH |
| Analog MUX control | ||
| PG_6 | ARD_MUX_A | Analog Multiplexer pin A |
| PG_7 | ARD_MUX_B | Analog Multiplexer pin B |
| PG_8 | ARD_MUX_C | Analog Multiplexer pin C |
Shared signals
(1) In the Arduino UNO R3 interface, the pin A4 is shared with D14 and A5 is shared with D15. Therefore, if these pins are to be used as Analog Inputs, the correspondent I2C pins PB_4 and PA_8 need to be configured as Input (high-impedance, default behaviour).