Steps to build this firmware with Mbed CLI

Import project

$ mbed import http://os.mbed.com/users/coisme/code/Pelion-GR-LYCHEE-camera-firmware/

Setting

Ethernet (GR-PEACH only)
- Change the file name mbed_app.RZ_A1H_Ethernet.json to mbed_app.json
Wi-Fi
- Change the Wi-Fi setting in mbed_app.json, i.e. nsapi.default-wifi-ssid and nsapi.default-wifi-password

If you haven't set your Pelion API key, run the following command.

$ mbed config -G CLOUD_SDK_API_KEY <API_KEY>

Setting for Pelion Device Management

$ mbed dm init -d "example.com" --model-name "PELION_DEMO" -q --force

Compile

For GR-LYCHEE:

$ mbed compile -t GCC_ARM -m GR_LYCHEE

For GR-PEACH:

$ mbed compile -t GCC_ARM -m RZ_A1H

Write the created .bin file to your GR-LYCHEE/PEACH.

That's it! :-)

LED Status Indicator

LEDs next to UB0 show the status of your GR-LYCHEE/PEACH.

LED#	GR-LYCHEE	GR-PEACH	Status	Description
LED1	green	red	Normal	Turned on after the device is registered to Pelion Device Management successfully.
LED2	yellow	green	Error	Turned on when the network initialization failed. Check your Wi-Fi setting.
LED3	orange	blue	Error	Turned on when the Pelion Device Management Client initialization failed. Check your SD card.
LED4	red	red	Error	Turned on when the network is disconnected. Check your Wi-Fi network status.

Clear device identity

If you want to clear the device's identity, connect to the device via serial terminal. Then input r command. The device flushes the identity storage, then reboot.

Known Issues

client_error(6) -> Client in reconnection mode NetworkError appears when connecting to network, but eventually connection will be established.
Warning message "MBEDTLS_TEST_NULL_ENTROPY has been enabled. This configuration is not secure and is not suitable for production use" appears when compiling the project for GR-PEACH. This can be ignored in development stage.

Files at this revision

API Documentation at this revision

Revision 14:0480150782c8, committed 2019-04-10

Comitter:: Osamu Koizumi
Date:: Wed Apr 10 12:46:02 2019 +0900
Parent:: 13:bc31cb1602de
Child:: 15:09a192353257
Commit message:: Use LEDs as error indicator.

Changed in this revision

main.cpp

Show annotated file Show diff for this revision Revisions of this file

diff -r bc31cb1602de -r 0480150782c8 main.cpp
--- a/main.cpp	Wed Apr 10 11:20:54 2019 +0900
+++ b/main.cpp	Wed Apr 10 12:46:02 2019 +0900
@@ -42,6 +42,9 @@
 DisplayBase Display;
 JPEG_Converter Jcu;
 
+const int LED_ON = 1;
+const int LED_OFF = 0;
+
 // An event queue is a very useful structure to debounce information between contexts (e.g. ISR and normal threads)
 // This is great because things such as network operations are illegal in ISR, so updating a resource in a button's fall() function is not allowed
 EventQueue eventQueue;
@@ -60,6 +63,9 @@
 MbedCloudClientResource *camera_capture_res;
 
 bool take_photo(uint8_t *photo_data, uint32_t *photo_data_len) {
+    // When taking a photo, RED LED (LED4) lights.
+    DigitalOut led(LED_RED, LED_ON);
+
     JPEG_Converter::bitmap_buff_info_t buff_info;
     JPEG_Converter::encode_options_t   encode_opt;
 
@@ -76,10 +82,13 @@
     encode_opt.input_swapsetting = JPEG_Converter::WR_RD_WRSWA_32_16_8BIT;
 
     dcache_invalid(photo_data, *photo_data_len);
-    if (Jcu.encode(&buff_info, photo_data, (size_t *)photo_data_len, &encode_opt) != JPEG_Converter::JPEG_CONV_OK) {
+    JPEG_Converter::jpeg_conv_error_t err = Jcu.encode(&buff_info, photo_data, (size_t *)photo_data_len, &encode_opt);
+    led = LED_OFF;
+    
+    if(err != JPEG_Converter::JPEG_CONV_OK)
+    {
         return false;
     }
-
     return true;
 }
 
@@ -106,10 +115,23 @@
     }
 }
 
+/*
+ * Monitor the network connection. If the network is disconnected, the RED LED (LED4) on the board lights.
+ */
+void monitor() {
+    nsapi_connection_status status = net->get_connection_status();
+    if(status != NSAPI_STATUS_GLOBAL_UP) {
+        DigitalOut led(LED_RED, LED_ON);
+        printf("Network is disconnected. Status = %d.\n", status);
+    } else {
+        DigitalOut led(LED_RED, LED_OFF);
+    }
+}
+
 void camera_capture_callback(MbedCloudClientResource *resource, const NoticationDeliveryStatus status)
 {
     printf("camera notification, status: %s (%d)\n", 
-    	MbedCloudClientResource::delivery_status_to_string(status), status);
+    MbedCloudClientResource::delivery_status_to_string(status), status);
 }
 
 /**
@@ -143,6 +165,8 @@
     // Set default photo
     M2MResource* m2m_res = camera_capture_res->get_m2m_resource();
     m2m_res->set_value(DEFAULT_PHOTO, DEFAULT_PHOTO_LEN);
+    // Turn on the GREEN LED (LED1) when device is registered.
+    DigitalOut led(LED_GREEN, LED_ON);
 }
  
 
@@ -155,6 +179,8 @@
 
     if (status != NSAPI_ERROR_OK) {
         printf("Connecting to the network failed %d!\n", status);
+        // Turn on the YELLOW LED (LED2) when the network initialization failed.
+        DigitalOut led(LED_YELLOW, LED_ON);
         return -1;
     }
 
@@ -165,6 +191,8 @@
     int client_status = client.init();
     if (client_status != 0) {
         printf("Pelion Client initialization failed (%d)\n", client_status);
+        // Turn on the ORANGE LED (LED3) when Pelion Client initialization failed.
+        DigitalOut led(LED_ORANGE, LED_ON);
         return -1;
     }
 
@@ -218,6 +246,10 @@
     // thread context instead of ISR context, which allows safely updating the cloud resource
     btn.fall(eventQueue.event(&button_press));
 
+    // Monitor the network connection periodically.
+    Ticker ticker;
+    ticker.attach(eventQueue.event(&monitor), 5.0);    // second param is period in seconds
+
     // You can easily run the eventQueue in a separate thread if required
     eventQueue.dispatch_forever();
 }