hello_world.bin on C118

Dieter Spaar spaar at mirider.augusta.de
Mon Mar 1 08:14:30 UTC 2010


Hello Chekov,

On Mon, 01 Mar 2010 02:04:13 +0100, "chekov" <chekov at riseup.net> wrote:

> but now i'm stuck, because i get no feedback from the phone, except that
> the display lights up blue.

I think the problem is related to this:

> Received PROMPT2 from phone, starting download
> handle_write(): 4096 bytes (4096/16503)
> handle_write(): 4096 bytes (8192/16503)
> handle_write(): 4096 bytes (12288/16503)
> handle_write(): 4096 bytes (16384/16503)
> handle_write(): 119 bytes (16503/16503)
> handle_write(): finished
> handle_write(): 4096 bytes (4096/16503)  <<<<----- this should not happen
> got 1 bytes from modem, data looks like: 1b

This probably means that the downloader does not receive a reply in time
and continues to download the code. You can try to fix it with this
modification:

   --- ./src/host/osmocon/osmocon.c    Tue Feb 23 18:38:39 2010
   +++ /src/host/osmocon/osmocon.c     Mon Mar 01 07:59:22 2010
   @@ -275,6 +275,7 @@
         usleep(1);
     } else if (dnload.write_ptr >= dnload.data + dnload.data_len) {
       printf("finished\n");
   +   dnload.serial_fd.when = BSC_FD_READ;
       dnload.write_ptr = dnload.data;
       return 1;
     }

As a consequence of still sending data to the phone, the firmware
could crash because there was a bug which is already fixed in the
latest GIT version. You can check if you already have the latest
version:

   --- ./src/target/firmware/comm/msgb.c Tue Feb 23 18:38:39 2010
   +++ /src/target/firmware/comm/msgb.c  Sun Feb 28 11:22:57 2010
   @@ -35,7 +35,11 @@

    #ifdef NO_TALLOC
    /* This is a poor mans static allocator for msgb objects */
   -#define MSGB_DATA_SIZE 256
   +#define MSGB_DATA_SIZE 256+4
    #define MSGB_NUM 16
    struct supermsg {
     uint8_t allocated;

Maybe the above helps to solve the problem.

Best regards,
  Dieter
-- 
Dieter Spaar, Germany                           spaar at mirider.augusta.de




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