NimbeLink Skywire RL78, Руководство пользователя

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3.1.3 Switch
​ ​
Configuration
SW1 is used to control the configuration mode of the adapter. To configure the
adapter ​ ​ for ​ ​ use ​ ​ with ​ ​ the ​ ​ PMOD ​ ​ connection ​ ​ do ​ ​ the ​ ​ following:
1. ​ ​ Remove ​ ​ power ​ ​ from ​ ​ J1 ​ ​ and ​ ​ the ​ ​ PMOD ​ ​ connection.
2. ​ ​ Place ​ ​ SW1.1-SW1.5 ​ ​ in ​ ​ the ​ ​ on ​ ​ position.
3. ​ ​ Place ​ ​ SW1.6 ​ ​ in ​ ​ the ​ ​ off ​ ​ position.
4. ​ ​ Configuration ​ ​ complete.
3.1.4 Connections
The Skywire RL78-Kurumi Adapter connects to the RL78/G13 through a Type 2A
(Expanded ​ ​ SPI) ​ ​ PMOD ​ ​ Interface. ​ ​ The ​ ​ table ​ ​ below ​ ​ describes ​ ​ the ​ ​ connections.
PIN Signal Description
1
SS
Slave
​ ​
Select.
​ ​
Active
​ ​
low
​ ​
to
​ ​
enable
​ ​
slave
​ ​
device
2 MOSI
Master
​ ​
Out
​ ​
Slave
​ ​
In.
​ ​
Data
​ ​
from
​ ​
master
​ ​
to
​ ​
slave
3
MISO
Master
​ ​
In
​ ​
Slave
​ ​
Out.
​ ​
Data
​ ​
from
​ ​
slave
​ ​
to
​ ​
master
4
SCK
Serial
​ ​
clock.
​ ​
Master
​ ​
provides
​ ​
the
​ ​
clock
​ ​
to
​ ​
shift
​ ​
the
​ ​
data
5
GND
6
VCC
7
INT
Interrupt
​ ​
signal
​ ​
from
​ ​
slave
​ ​
to
​ ​
master,
​ ​
connected
​ ​
to
​ ​
the
​ ​
SPI
​ ​
to
UART
​ ​
converter
​ ​
chip
8
RESET
Reset
​ ​
signal
​ ​
for
​ ​
master
​ ​
to
​ ​
reset
​ ​
SPI
​ ​
to
​ ​
UART
​ ​
converter
9
Skywire
​ ​
ON/OFF
Skywire
​ ​
On
​ ​
Off
​ ​
control
​ ​
line
10
Skywire
​ ​
DTR
Skywire
​ ​
DTR
​ ​
signal
11
GND
12 VCC
3.1.5 SPI ​ ​ to ​ ​ UART ​ ​ Chip ​ ​ Configurations
To configure the XR20M1170 SPI to UART interface for communication between the
PMOD interface (SPI) and the Skywire Cellular Modem (UART, 115200 bps) use the
configuration sequence in the table below. The SPI interface from the host processor
PN ​ ​ 30018 ​ ​ rev ​ ​ 2 ​ © ​ ​ NimbeLink ​ ​ Corp. ​ ​ 2017. ​ ​ All ​ ​ rights ​ ​ reserved. 8