Specific Pelion ready example using features of Seeed Wio boards including cellular and SD Card

Dependencies:   WS2812 PixelArray

Fork of simple-mbed-cloud-example-wio_3g by Toyomasa Watarai

This example is known to work great on the following platforms:
Seeed Wio 3G and Seeed Wio LTE-M1/NB1(BG96) over cellular and using SD card.

https://os.mbed.com/media/cache/platforms/Wio_3G.png.250x250_q85.png

Follow the Quick-Start instructions: https://cloud.mbed.com/quick-start

Example functionality

This example showcases the following device functionality:

  • Allow the user to change the state of the board LED from Pelion LWM2M led_state resource and PUT request.

Instructions to use this program with mbed CLI

1. Import the application into your desktop:

mbed import https://os.mbed.com/teams/Seeed/code/pelion-example-common/

cd pelion-example-common

2. Install the CLOUD_SDK_API_KEY

mbed config -G CLOUD_SDK_API_KEY <PELION_DM_API_KEY>

For instructions on how to generate your API key, please see the documentation.

3. Initialize firmware credentials (done once per repository). You can use the following command:

mbed dm init -d "<your company name in Pelion DM>" --model-name "<product model identifier>" -q --force

If above command do not work for your Mbed CLI, please consider upgrading Mbed CLI to version 1.9.x or above.

  • Set APN name, username and password in the mbed_app.json.

            "nsapi.default-cellular-plmn"      : "\"00000\"",
            "nsapi.default-cellular-sim-pin"   : "\"0000\"",
            "nsapi.default-cellular-apn"       : "\"apn\"",
            "nsapi.default-cellular-username"  : "\"username\"",
            "nsapi.default-cellular-password"  : "\"password\""

Information

For the Wio LTE-M1/NB1(BG96) target, PLMN (Public land mobile network) should be specified to get quick connection to the network. This is usually found first 5 digit from your SIM card IMSI (International Mobile Subscriber Identity) number. e.g. 44052

4. Compile and program:

mbed compile -t <toolchain> -m WIO_3G

(supported toolchains : GCC_ARM / ARM / IAR)

Troubleshooting

  • Make sure the fields nsapi.default-cellular-sim-pin, nsapi.default-cellular-apn, nsapi.default-cellular-username and nsapi.default-cellular-password from the mbed_app.json file are filled in correctly. The correct values should appear in the user manual in the details of the SIM card.
  • Enable trace flag to have access to debug information "mbed-trace.enable": true.
  • Try both TCP and UDP socket types.
  • Try both "lwip.ppp-enabled": true and "lwip.ppp-enabled": false.
  • The modem and network may only support IPv6 in which case "lwip.ipv6-enabled": true shall be defined.
  • The SIM and modem must have compatible cellular technology (3G, 4G, NB-IoT, ...) supported and cellular network available.
Revision:
3:6f3b402196cc
Parent:
2:aadfd874279d
Child:
4:d4caf0ec02d0
--- a/mbed_app.json	Thu Apr 18 13:13:04 2019 +0900
+++ b/mbed_app.json	Mon May 13 13:35:18 2019 +0900
@@ -37,6 +37,37 @@
             "nsapi.default-cellular-apn"            : "\"apn\"",
             "nsapi.default-cellular-username"       : "\"username\"",
             "nsapi.default-cellular-password"       : "\"password\""
+        },
+        "WIO_BG96": {
+            "target.features_add"                   : ["STORAGE", "BOOTLOADER", "LWIP"],
+            "target.network-default-interface-type" : "CELLULAR",
+            "target.components_add"                 : ["SD"],
+            "target.app_offset"                     : "0x10400",
+            "target.header_offset"                  : "0x10000",
+            "target.bootloader_img"                 : "bootloader/mbed-bootloader-WIO_3G.bin",
+            "mbed-cloud-client.external-sst-support" : null,
+            "sd.SPI_MOSI"                           : "PC_12",
+            "sd.SPI_MISO"                           : "PC_11",
+            "sd.SPI_CLK"                            : "PC_10",
+            "sd.SPI_CS"                             : "PD_0",
+            "update-client.application-details"     : "(0x08000000+64*1024)",
+            "update-client.storage-address"         : "(64*1024*1024)",
+            "update-client.storage-size"            : "(2*1024*1024)",
+            "update-client.storage-locations"       : "1",
+            "device-management.sotp-section-1-address" : "(0x081C0000)",
+            "device-management.sotp-section-1-size"    : "(128*1024)",
+            "device-management.sotp-section-2-address" : "(0x081E0000)",
+            "device-management.sotp-section-2-size"    : "(128*1024)",
+            "device-management.sotp-num-sections"      : 2,
+            "lwip.ipv4-enabled"                     : true,
+            "lwip.ethernet-enabled"                 : false,
+            "lwip.ppp-enabled"                      : false,
+            "lwip.tcp-enabled"                      : true,
+            "cellular.use-apn-lookup"               : false,
+            "nsapi.default-cellular-sim-pin"        : "\"0000\"",
+            "nsapi.default-cellular-apn"            : "\"apn\"",
+            "nsapi.default-cellular-username"       : "\"username\"",
+            "nsapi.default-cellular-password"       : "\"password\""
         }
     },
     "config": {