There are two USB ports on the board. For firmware flashing and debugging, use the one named "USB ST_LINK":
Note: This USB connection will also power the board. Alternatively, it supports PoE, so it may be handy when deploying in the field (although you will not be able to upload new program that way). To enable PoE, install an appropriate jumper on CN3 header.
Download the appropriate STM32 Cube Programmer version from ST web site and install it in your development machine. (it will also install USB drivers)
Before you can code in C#, nanoFramework runtime has to be flashed in. This is done by nanoff utility, which you installed in the Getting Started guide. Run this command in the Command Prompt:
nanoff --target ST_STM32F769I_DISCOVERY --update
This command will download the latest stable FW revision, detect the the board and flash it.
If it complains like this, disregard it:
You are now ready to upload C# programs.
The are four LEDs available for the user, marked LD1-LD4, and also a button USER. Their pins are:
| Marking | MCU port&pin | nF pin number |
|---|---|---|
| LD1 | PJ13 | 157 |
| LD2 | PJ5 | 149 |
| LD3 | PA12 | 12 |
| LD4 | PD4 | 52 |
| USER | PA0 | 0 |
Note: LD4 levels are inverted compared to LD1-LD3.
Note: LD3 is also tied to the Arduino header pin D13.
If you want to know, how MCU pin name is converted to nF pin number, see the FAQ here.
CN11 (power delivery):
| Marking | MCU port&pin | nF pin number |
|---|---|---|
| NC | - | - |
| IOREF | - | - |
| RESET | NRST | - |
| +3V3 | - | - |
| 5V | - | - |
| GND | - | - |
| GND | - | - |
| VIN | - | - |
CN14 (analog functions):
| Marking | MCU port&pin | nF pin number | Alternative function |
|---|---|---|---|
| A0 | PA6 | 6 | Analog channel 0 |
| A1 | PA4 | 4 | Analog channel 1 |
| A2 | PC2 | 34 | Analog channel 2 |
| A3 | PF10 | 90 | - |
| A4 | PF8 | 88 | Analog channel 4 |
| A5 | PF9 | 89 | - |
CN9 (digital functions):
| Marking | MCU port&pin | nF pin number | Alternative function |
|---|---|---|---|
| D15 | PB8 | 24 | I2C1_SCL |
| D14 | PB9 | 25 | I2C1_SDA |
| AVDD | - | - | - |
| GND | - | - | - |
| D13 | PA12 | 12 | SPI2_SCK |
| D12 | PB14 | 30 | SPI2_MISO |
| D11 | PB15 | 31 | SPI2_MOSI |
| D10 | PA11 | 11 | SPI2_CS |
| D9 | PH6 | 118 | - |
| D8 | PJ4 | 148 | - |
CN13 (digital functions):
| Marking | MCU port&pin | nF pin number | Alternative function |
|---|---|---|---|
| D7 | PJ3 | 147 | - |
| D6 | PF7 | 87 | - |
| D5 | PC8 | 40 | - |
| D4 | PJ0 | 144 | - |
| D3 | PF6 | 86 | - |
| D2 | PJ1 | 145 | - |
| D1 | PC6 | 38 | USART6_TX |
| D0 | PC7 | 39 | USART6_RX |