Investigate cascoda driver issues with contiki upstream

[abhijit-mahajani-imgtec]

AS a result of #11, its observed that there are some issues with cascoda driver working with contiki-master (upstream version)

[mtusnio]

https://github.com/mtusnio/contiki/tree/upstream_merge - upstream merged into 3.0-mikro-e with a fix for the clock, ca8210-conf.h will need the following change:

diff --git a/platform/mikro-e/ca8210-conf.h b/platform/mikro-e/ca8210-conf.h
index 9283e83..6ec21f8 100644
--- a/platform/mikro-e/ca8210-conf.h
+++ b/platform/mikro-e/ca8210-conf.h
@@ -36,9 +36,9 @@
 #ifndef CA8210_CONF_H
 #define CA8210_CONF_H
 
-#undef DEBUG /* Conflict with a macro named DEBUG defined in compiler */
-#include <p32xxxx.h>
 #undef DEBUG
+#include <p32xxxx.h>
+#define DEBUG 0
 
 #include <pic32_gpio.h>
 #include <pic32_irq.h>

If you build the following example - https://github.com/mtusnio/LetMeCreateIoT/tree/master/examples/udp_client - with the upstream_merge branch the clicker will not send data (try tcpdump -i lowpan0), however it will periodically send ROUTER_SOLICITATION packets. Check ca8210 driver to enable debug to see the payload dump.

[ghost]

RPL is now enabled by default. RPL is currently not working no udp connection from clicker to ci40. Disabling it enables NA which re-establish the previous behaviour before the merge with upstream.

In the Makefile of each project, RPL can be disabled by adding the line:

CONTIKI_WITH_RPL = 0