2019-04-22 16:31:02 +02:00
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README
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Spresense is a compact development board based on Sony’s power-efficient
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multicore microcontroller CXD5602. It allows developers to create IoT
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applications in a very short time and is supported by the Arduino IDE as well
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as the more advanced NuttX based SDK.
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- Integrated GPS
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The embedded GNSS with support for GPS, QZSS and GLONASS enables applications
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where tracking is required.
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- Hi-res audio output and multi mic inputs
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Advanced 192kHz/24 bit audio codec and amplifier for audio output, and
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support for up to 8 mic input channels.
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- Multicore microcontroller
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Spresense is powered by Sony's CXD5602 microcontroller (ARM® Cortex®-M4F × 6
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cores), with a clock speed of 156 MHz.
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Refer to https://developer.sony.com/develop/spresense/ for further information
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about this board.
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2019-07-30 12:49:16 +02:00
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Configuration sub-directories
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-----------------------------
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wifi
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This is a configuration for Spresense + Wi-Fi addon (Telit GS2200M) module.
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With this configuration, (1) you can connect Spresense to an existing Wi-Fi
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access point (2.4GHz 802.11b/g/n are supported) or (2) you can make
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Spresense as a Wi-Fi access point. In both cases, you can login to the
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Spresense with telnet, also access to a webserver (NOTE: this case you need
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an extension board with microSDHC card)
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(1) Station (STA) mode
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To run the module in Station mode (i.e. to connect to an existing Wi-Fi
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access point), You need to specify SSID with passcode.
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nsh> gs2200m ssid-to-connect passcode &
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If the connection succeeded, IP address is statically assigned.
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nsh> ifconfig
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eth0 Link encap:Ethernet HWaddr 3c:95:09:00:69:92 at UP
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inet addr:10.0.0.2 DRaddr:10.0.0.1 Mask:255.255.255.0
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Then, you can run DHCP client (renew command) to obtain IP address as well
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as DNS server information. (NOTE: In current configuration, DHCP client on
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GS2200M is disabled. If you enable the internal DHCP client, you can not
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use DNS client on NuttX)
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nsh> renew eth0 &
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renew [6:100]
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nsh> ifconfig
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eth0 Link encap:Ethernet HWaddr 3c:95:09:00:69:92 at UP
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inet addr:192.168.1.101 DRaddr:192.168.1.1 Mask:255.255.255.0
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Now, you can run telnetd and webserver on Spresense.
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nsh> telnetd &
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telnetd [7:100]
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nsh> webserver &
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webserver [9:100]
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nsh> Starting webserver
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Also, you can run NTP client to adjust the RTC on Spresense. (NOTE: we
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assume your network can access to pool.ntp.org, otherwise, you can specify
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CONFIG_NETUTILS_NTPCLIENT_SERVER)
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nsh> date
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Jan 01 00:00:36 1970
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nsh> ntpcstart
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Started the NTP daemon as PID=11
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nsh> date
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Jul 30 06:42:13 2019
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(2) Acess Point (AP) mode
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To run the module in AP mode, you need to specify SSID to advertise and
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WEP-key. (NOTE: in AP mode, you can also specify channel number to use)
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nsh> gs2200m -a ssid-to-advertise 10-hex-digits-wep-key &
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If the module was initialized in AP mode, you can see a new IP address is
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assigned.
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nsh> ifconfig
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eth0 Link encap:Ethernet HWaddr 3c:95:09:00:69:93 at UP
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inet addr:192.168.11.1 DRaddr:192.168.11.1 Mask:255.255.255.0
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Now you can connect your PC to the AP with the above SSID and WEP-key
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which you specified.
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