![]() Pins on the expansion header of the board. Built-in LEDs on STM32 discovery board.įigure 7. It also has various pins on the expansion header, as shown in Figure 7, in order to connect various other peripherals such as LED and other sensors. The blue button on the board is the user button, and the black button is a reset button. The board shown in Figure 2 is a discovery board, which has four LEDs. You can have a close look at the microcontroller. Remember that the chip shown in Figure 2 is the main microcontroller, and the part number or name of the microcontroller is written on this microcontroller itself. For the full features of the board, you have to refer to the user manual. Now let’s explore this board a little bit.įirst, let’s explore the discovery board. Product description page of discovery board. The version number V2-A is used in newer boards, and version number V2 is used in older boards. That means there are two versions of this ST-Link. The ST-Link circuitry comes with the firmware in order to operate properly, and in the product description page (Figure 5), they say that the onboard ST-Link used on the old discovery board is ST-LINK/V2, and ST-LINK/V2-A is used in newer boards. Otherwise, your PC won’t detect the ST-Link circuitry. Make sure that the jumpers shown in Figure 4 are connected properly. With this circuitry, you flash the code onto the microcontroller as well as debug the code running on this microcontroller from the host software like Keil or Eclipse. The portion marked in Figure 3 is called as ST-Link circuitry, which is actually in-circuit debugger and programming circuitry. On the right-hand side of your board, you will see one microcontroller (Figure 3), which is the microcontroller used for this ST-Link circuitry. That is the main microcontroller of the board. In the middle of your board, you will see one microcontroller (Figure 2). Remember that MB997D is a board identification number for the newer STM32F407VG discovery board and MB997C is for older boards. If you don’t see this name, then it’s an older board. There you can see that the name is STM32F407VG – DISC1.ĭISC1 means it’s a newer board. So, first, you have to check the name of your board.įor example, in Figure 1, you can see the image of the board. One is an older board, and another one is a newer one. If you have an STM32F407VG discovery board, then it actually comes with two flavors.
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