Hi Pierre,
On Sunday, 4. May 2014 18:51:45 Pierre Molinaro wrote:
> I use libftdi 1-1.1 (last release) with interface B of an Olimex
> ARM-USB-OCD JTAG. All is working fine, but change baud rate.
> ftdi_set_baudrate () does not fail, it returns 0, but has no effect on
> baud rate.
>
> I have found this message in libftdi archives :
>
> http://developer.intra2net.com/mailarchive/html/libftdi/2013/msg00207.htm
> l
>
> It suggested the following change in ftdi_convert_baudrate () function:
> ------
> if (ftdi->type == TYPE_2232H ||
> ftdi->type == TYPE_4232H ||
> ftdi->type == TYPE_232H )
> {
> *index = (unsigned short)(encoded_divisor >> 8);
> }
> else
> {
> *index = (unsigned short)(encoded_divisor >> 16);
> }
> *index &= 0xFF00;
> *index |= ftdi->index;
hmm, I prefer not touching this in a too generic way
since I don't have AM type chips around to test it.
What chip is used on your ARM-USB-OCD JTAG interface? FT2232C?
May be we can narrow down what's happening.
Does this code change work for you:
$ git diff
diff --git a/src/ftdi.c b/src/ftdi.c
index b6caf6c..3e2ebfd 100644
--- a/src/ftdi.c
+++ b/src/ftdi.c
@@ -1200,7 +1200,7 @@ static int ftdi_convert_baudrate(int baudrate, struct
ftdi_context *ftdi,
}
// Split into "value" and "index" values
*value = (unsigned short)(encoded_divisor & 0xFFFF);
- if (ftdi->type == TYPE_2232H || ftdi->type == TYPE_4232H || ftdi->type ==
TYPE_232H)
+ if (ftdi->type == TYPE_2232C || ftdi->type == TYPE_2232H || ftdi->type ==
TYPE_4232H || ftdi->type == TYPE_232H)
{
*index = (unsigned short)(encoded_divisor >> 8);
*index &= 0xFF00;
?
Cheers,
Thomas
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