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NuttX compilation was done using CodeSourcery arm-2010.09-51-arm-none-eabi.bin, other toolchain could fail.
NuttX can be configured differently depending on what we want.The possible configs are:
- compal_e88/nsh_highram : for the gta02 using the osmocon for the romloader
- compal_e99/nsh_highram : for the c155 using osmocon + loader.compalram.bin as a loader
- compal_e99/nsh_compalram : for the c155 using osmocon to load it
nsh is the nuttx shell(nuttx can also run standalone apps without a shell).
standalone nuttx¶
if you want a standalone nuttx(without linking to osmocombb for the drivers) do the following:
configure nuttx:
$ cd nuttx/tools $ ./configure.sh compal_e99/nsh_highram
Compile NuttX:
$ cd nuttx $ make
Load nuttx.bin into Motorola C155, because nuttx.bin is bigger than 64k, you should load chainload.compalram.bin together, use this command:
./osmocom-bb/src/host/osmocon/osmocon -p /dev/ttyUSB0 -m c155 /osmocom-bb/src/target/firmware/board/compal_e99/chainload.compalram.bin -c nuttx.bin
After loading you will receive this message:
Checksum on phone side matches, let's branch to your code Branching to 0x00820000 Received branch ack, your code is running now!
Then press Ctrl+C and use a serial terminal of your preference, i.e:
Picocom:
picocom -b 115200 /dev/ttyUSB0
Minicom:
$ minicom -s
+-----[configuration]------+ | Filenames and paths | | File transfer protocols | | Serial port setup | <<-- Choose this option | Modem and dialing | | Screen and keyboard | | Save setup as dfl | | Save setup as.. | | Exit | | Exit from Minicom | +--------------------------+
Then:
+-----------------------------------------------------------------------+ | A - Serial Device : /dev/ttyUSB0 | | B - Lockfile Location : /var/lock | | C - Callin Program : | | D - Callout Program : | | E - Bps/Par/Bits : 115200 8N1 | | F - Hardware Flow Control : No | | G - Software Flow Control : No | | | | Change which setting? | +-----------------------------------------------------------------------+
Updated by gnutoo about 8 years ago · 12 revisions