Fix an issue that GPO pins is not iniitalized by watchdog reboot.
If the watchdog expires during LTE is in use, it causes the LTE
to remain powered on and fails to launch after reboot.
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README
======
Spresense is a compact development board based on Sony’s power-efficient
multicore microcontroller CXD5602. It allows developers to create IoT
applications in a very short time and is supported by the Arduino IDE as well
as the more advanced NuttX based SDK.
- Integrated GPS
The embedded GNSS with support for GPS, QZSS and GLONASS enables applications
where tracking is required.
- Hi-res audio output and multi mic inputs
Advanced 192kHz/24 bit audio codec and amplifier for audio output, and
support for up to 8 mic input channels.
- Multicore microcontroller
Spresense is powered by Sony's CXD5602 microcontroller (ARM® Cortex®-M4F × 6
cores), with a clock speed of 156 MHz.
Refer to https://developer.sony.com/develop/spresense/ for further information
about this board.
NOTICE:
To run the nuttx, bootloader for Spresense SDK 2.1.0 or later must be installed.
Configuration sub-directories
-----------------------------
elf
This is a configuration to test apps/examples/elf.
module
This is a configuration to test apps/examples/module.
posix_spawn
This is a configuration to test apps/examples/posix_spawn.
smp
This is a configuration to run Spresense in SMP mode.
wifi
This is a configuration for Spresense + Wi-Fi addon (Telit GS2200M) module.
With this configuration, (1) you can connect Spresense to an existing Wi-Fi
access point (2.4GHz 802.11b/g/n are supported) or (2) you can make
Spresense as a Wi-Fi access point. In both cases, you can login to the
Spresense with telnet, also access to a webserver (NOTE: this case you need
an extension board with microSDHC card)
(1) Station (STA) mode
To run the module in Station mode (i.e. to connect to an existing Wi-Fi
access point), You need to specify SSID with passcode.
nsh> gs2200m ssid-to-connect passcode &
If the connection succeeded, IP address is statically assigned.
nsh> ifconfig
wlan0 Link encap:Ethernet HWaddr 3c:95:09:00:69:92 at UP
inet addr:10.0.0.2 DRaddr:10.0.0.1 Mask:255.255.255.0
Then, you can run DHCP client (renew command) to obtain IP address as well
as DNS server information. (NOTE: In current configuration, DHCP client on
GS2200M is disabled. If you enable the internal DHCP client, you can not
use DNS client on NuttX)
nsh> renew wlan0 &
renew [6:100]
nsh> ifconfig
wlan0 Link encap:Ethernet HWaddr 3c:95:09:00:69:92 at UP
inet addr:192.168.1.101 DRaddr:192.168.1.1 Mask:255.255.255.0
Now, you can run telnetd and webserver on Spresense.
nsh> telnetd &
telnetd [7:100]
nsh> webserver &
webserver [9:100]
nsh> Starting webserver
Also, you can run NTP client to adjust the RTC on Spresense. (NOTE: we
assume your network can access to pool.ntp.org, otherwise, you can specify
CONFIG_NETUTILS_NTPCLIENT_SERVER)
nsh> date
Jan 01 00:00:36 1970
nsh> ntpcstart
Started the NTP daemon as PID=11
nsh> date
Jul 30 06:42:13 2019
(2) Access Point (AP) mode
To run the module in AP mode, you need to specify SSID to advertise and
WPA2-PSK passphrase or WEP-key. (NOTE: in AP mode, you can also specify
channel number to use. Also, you need to set CONFIG_WL_GS2200M_ENABLE_WEP=y
if you want to use WEP instead of WPA2-PSK)
nsh> gs2200m -a ssid-to-advertise 8-to-63-wpa2-psk-passphrase &
or
nsh> gs2200m -a ssid-to-advertise 10-hex-digits-wep-key &
If the module was initialized in AP mode, you can see a new IP address is
assigned.
nsh> ifconfig
wlan0 Link encap:Ethernet HWaddr 3c:95:09:00:69:93 at UP
inet addr:192.168.11.1 DRaddr:192.168.11.1 Mask:255.255.255.0
Now you can connect your PC to the AP with the above SSID and WPA2-PSK
passphrase or WEP-key which you specified.
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