ST X-NUCLEO-SNK1M1, User Manual

Page: 13 / 23

Step 6. Plug a Source application board on the X-NUCLEO-SNK1M1 expansion board CN1 connector through
a Type-C cable and refer to the following LED operation description to identify the application results:
–
NUCLEO-L412RB-P LD3 LED is ON when the board is supplied by the ST-LINK micro-USB
connector (CN1)
– X-NUCLEO-SNK1M1 LD2 LED is ON when the 3V3 voltage is provided to the expansion board
by the STM32 Nucleo
– X-NUCLEO-SNK1M1 LD1 LED is ON when a Source is connected to the USB Type-C CN1
connector and the V
BUS
is provided
– NUCLEO-L412RB-P LD2 LED:
◦ blinks once every 2 seconds when USB default is identified
◦ blinks twice every 2 seconds when a Source USB Type-C 1.5 A current capability is
identified;
◦ blinks 3 times every 2 seconds when a Source USB Type-C 3 A current capability is
identified.
1.3.1.3.1 Dead battery operation mode
Step 1. Repeat steps 1- 4 described in Section 1.3.1.3
Step 2. Disconnect the micro-USB cable from NUCLEO-L412RB-P CN1.
Step 3. Remove the power selection jumper from the JP2 header on NUCLEO-L412RB-P development board
(previously set on STLK 1-2 pins) and leave it fully open.
Step 4. On the X-NUCLEO-SNK1M1 , set LDO OUT jumper (JP3) and NRST jumper (JP4).
Step 5. Plug a Source board to X-NUCLEO-SNK1M1 CN1 connector through a Type-C cable.
The provided V
BUS
supplies the Sink solution while the LEDs define the status as previously described.
Note: The firmware application example designed for the NUCLEO-L412RB-P embeds the USB2.0 driver which can
start the USB enumeration when the board is connected to a laptop or a PC. To test this functionality, R8 and R9
solder bridges have to be mounted while R12 and R13 have to be mounted.
UM2773
Demo application setup
UM2773 - Rev 1
page 13/23