DocID028481 Rev 1
11/24
UM1964
Hardware description and configuration
24
Note:
Default shorted solder bridges are written in bold.
2.2 Multi-motors
configuration
It is possible to synchronously drive two-axis stepper motors with one X-NUCLEO-IHM02A1
board only. However, up to four X-NUCLEO-IHM02A1 expansion boards can be stacked on
a single STM32 Nucleo board, so it is possible to drive up to eight stepper motors. Each X-
NUCLEO-IHM02A1 expansion board is addressable through the nCS pin that must be
connected to one pin only of the microcontroller. So, when using more than one expansion
board, the user must short a different solder bridge among SB7, SB8, SB9 and SB23, for
each X-NUCLEO-IHM02A1. Be sure to align the firmware with any hardware change.
Table 6. SPI lines table
SPI wire
Solde
r bridge
NU
CL
EO
-F
4
0
1
RE
NU
CL
EO
-F
3
0
2
R8
NU
CL
EO
-F
0
7
2
RB
AR
DUINO UNO
R3
ST mo
rpho
conn
ecto
r
AR
DUINO
Conne
ctor
SDI
SB10
PB15
SPI2_MOSI
PA7
(1)
1.
Not applicable.
PB15
SPI2_MOSI
/
CN10-26
/
SB26
PA7
SPI1_MOSI
PB15
SPI2_MOSI
PA7
SPI1_MOSI
D11
MOSI
CN10-15
CN5-4
SDO
SB11
PB14
SPI2_MISO
PA6
(1)
PB14
SPI2_MISO
/
CN10-28
/
SB32
PA6
SPI1_MISO
PB14
SPI2_MISO
PA6
SPI1_MISO
D12
MISO
CN10-13
CN5-5
SCK
SB12
PA5
SPI1_SCK
PB13
SPI2_SCK
PA5
SPI1_SCK
D13
SCK
CN10-11
CN5-6
SB13
PB13
SPI2_SCK
PA5
(1)
PB13
SPI2_SCK
/
CN10-30
/
SB34
PB3
SPI1_SCK
PB3
(1)
PB3
SPI1_SCK
D3
(1)
CN10-31
CN9-4
nCS
SB7
PA10
PA10
PA10
D2
(1)
CN10-33
CN9-3
SB8
PB6
PB6
PB6
D10
CS
CN10-17
CN5-3
SB9
PB4
PB4
PB4
D5
(1)
CN10-27
CN9-6
SB23
PA4
PA4
PA4
A2
(1)
CN7-32
CN8-3
