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Implemented serial_set_break for FTDI

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Setting break is required to wake up Cochran DCs (it doesn't make
sense to me, but it's needed).

Signed-off-by: John Van Ostrand <john@vanostrand.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
John Van Ostrand 2017-09-05 17:07:57 -04:00 • committed by Dirk Hohndel
parent 166eb17ac2
commit 866a25f90e
1 changed files with 15 additions and 4 deletions
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19
core/serial_ftdi.c
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@ -69,6 +69,9 @@ typedef struct ftdi_serial_t {
int halfduplex;
unsigned int baudrate;
unsigned int nbits;
unsigned int databits;
unsigned int stopbits;
unsigned int parity;
} ftdi_serial_t;
static dc_status_t serial_ftdi_get_received (dc_custom_io_t *io, size_t *value)
@ -172,6 +175,9 @@ static dc_status_t serial_ftdi_open (dc_custom_io_t *io, dc_context_t *context,
device->halfduplex = 0;
device->baudrate = 0;
device->nbits = 0;
device->databits = 0;
device->stopbits = 0;
device->parity = 0;
// Initialize device ftdi context
INFO(0, "initialize ftdi_ctx");
@ -334,6 +340,9 @@ static dc_status_t serial_ftdi_configure (dc_custom_io_t *io, unsigned int baudr
device->baudrate = baudrate;
device->nbits = 1 + databits + stopbits + (parity ? 1 : 0);
device->databits = databits;
device->stopbits = stopbits;
device->parity = parity;
return DC_STATUS_SUCCESS;
}
@ -535,7 +544,7 @@ static dc_status_t serial_ftdi_send_break (dc_custom_io_t *io)
return DC_STATUS_UNSUPPORTED;
}
static dc_status_t serial_ftdi_set_break (dc_custom_io_t *io, int level)
static dc_status_t serial_ftdi_set_break (dc_custom_io_t *io, unsigned int level)
{
ftdi_serial_t *device = (ftdi_serial_t*) io->userdata;
@ -544,7 +553,10 @@ static dc_status_t serial_ftdi_set_break (dc_custom_io_t *io, int level)
INFO (device->context, "Break: value=%i", level);
// Not implemented in libftdi yet. Research it further.
if (ftdi_set_line_property2(device->ftdi_ctx, device->databits, device->stopbits, device->parity, level)) {
ERROR (device->context, "%s", ftdi_get_error_string(device->ftdi_ctx));
return DC_STATUS_IO;
}
return DC_STATUS_UNSUPPORTED;
}
@ -598,6 +610,5 @@ dc_custom_io_t serial_ftdi_ops = {
.serial_set_halfduplex = serial_ftdi_set_halfduplex,
// Can't be done in ftdi?
// only used in vyper2
// NULL means NOP
.serial_set_break = NULL
.serial_set_break = serial_ftdi_set_break,
};