Customizable I/O Port; Uart Ports - dji ROBOMASTER User Manual

ROBOMASTER Development Board Type C User Manual

Customizable I/O Port

The customizable I/O port is an 8-pin ejector header connector with each pin spaced 2.54 mm apart,
which can be used for connecting an IIC or SPI device. The port supports communication devices
with a rated voltage of 3.3 or 5 V*.
[4] SPI2_CS
[4] SPI2_CLK
[4] SPI2_MOSI
R128
[4] SPI2_MISO
0201
The port pin is shown below.
1 2
SPI2_CS GND
* When a 5V external device is required, a R210 resistor must be welded manually and the R209 resistor must be
removed.

UART Ports

The two UART ports map to the UART1 4-pin external port and the UART6 3-pin external port of
the STM32. The two ports can be connected to the RoboMaster Power Management Module and
the baud rate can be configured. An external level conversion chip is required for the ports to
communicate with a RS485 or RS232 port. The ports only support 3.3 and 5 V.
[4] UART1_TX
[4] UART1_RX
10
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33.0R
3 4
SPI2_CLK 3.3V
R131
33.0R 0201
R132
4.7KR
0201
The serial port is
串口上拉3.3V
pulled up to 3.3 V
VCC_3V3
U17
1 2
3 4
5 6
7 8
JCX09-A-2-4
7 5 3 1
8 6 4 2
5
SPI2_MOSI I2C2_SCL
VCC_5V
R133
4.7KR
0201
R210
0805 0.0R
R209
0805 0.0R
R126 R127
2.2KR 2.2KR
0402 0402
I2C2_SCL [5]
I2C2_SDA [5]
6 7
SPI2_MISO
1.25T-7-4AW
4
4
3 6
3 6
2 5
2 5
1
1
J30
Horizontal
卧式
VCC_5V
NC
VCC_3V3
8
I2C2_SDA