On the Nucleo-U575ZI-Q schematic we’ll need to locate another point of connection to VDD_MCU which in this case is SB55.Īfter performing the connectivity test and verifying the pin on JP5 that is connected to VDD_MCU, we then will connect the STM32 power shield’s CN14 pin 3 (VOUT (+)) to the VDD_MCU pin on JP5 of the STM32 board. Therefore, we’ll need to take an extra step and use a multimeter to perform a connectivity test to figure out which pin on JP5 is connected to VDD_MCU. Unfortunately, the pin orientation on the schematic doesn’t necessarily align with the pin orientation on the board. We will need to remove the jumper on JP5, and establish a connection between the VDD_MCU of the Nucleo-U575ZI-Q board and the STM32 power shield's pin 3 (VOUT(+)). Each STM32’s respective board schematic can be found on the board’s landing page under the CAD resources tab. Locate the IDD measurement pin on your STM32 board by checking the schematic of your board. We will use Pin 13 on CN8 of the Nucleo-U575ZI-Q as our ground reference. Step 2. Connect the STM32 power shield’s CN14 pin 1 (GND) to a GND pin on your STM32 board. For more information on this please see UM2243 (STM32 Nucleo Expansion Board for Power Consumption Measurement). Each pin’s description and usage are described in the following table. Locate CN14 on your STM32 power shield – this is a 4-pin connector that can be used to supply and measure the target board’s consumption using wire connections. When you are finished with your desired measurement settings configurations, move the joystick to the left to exit from the menu.įor more information on this menu displayed on the power shield’s LCD, please see UM2269 (Getting started with PowerShield firmware) section 3. Note that the joystick can also be moved down to explore other configuration options such as: integration time, acquisition mode, trigger source, trigger delay, current threshold temperature unit. Move the joystick to the right to select a different parameter. The first measurement setting on the menu is the target’s supply voltage you may select from any of the following supply target voltages: 1.8V, 2.4V, 3.0V, or 3.3V. However, this target supply voltage can be changed through the measurement setting’s menu displayed on the power shield’s LCD. The default voltage supplied to the target board is set to 3.0V. Step 0. Upon powering up your STM32 Power Shield you will see a welcome message flash on the LCD for ~2 seconds, then transition onto a screen prompting for user action. In our example use case, we will refer to the Nucleo-U575ZI-Q as our STM32 target board of choice. In this article, we will discuss the simplest way to establish a connection between your STM32 board and the STM32 power shield. How can I connect my STM32 board with the X-NUCLEO-LPM01A (STM32 Power Shield)? There are several different ways to connect your STM32 board to the STM32 power shield, some more complex than others.
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