osd-contiki/tools/sensinode/nano_programmer/windows/port.c

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/*
NanoStack: MCU software and PC tools for IP-based wireless sensor networking.
Copyright (C) 2006-2007 Sensinode Ltd.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Address:
Sensinode Ltd.
Teknologiantie 6
90570 Oulu, Finland
E-mail:
info@sensinode.com
*/
#include "port.h"
#include <stdio.h>
int port_open(port_t **port, int device)
{
port_t *new_port = (port_t *) malloc(sizeof(port_t));
FT_STATUS status;
*port = new_port;
new_port->device = device;
new_port->handle = 0;
status = FT_Open(device, &(new_port->handle));
if (status != FT_OK)
{
new_port->handle = 0;
printf("Serial port open failed with error message: %d.\n", (int)status);
return(-1);
}
else
{
DWORD mask;
new_port->event_handle = CreateEvent(NULL, TRUE, FALSE, "SN_USB_UART_EVENTS");
if (new_port->event_handle == NULL)
{
printf("Event handle creation failed.\n");
FT_Close(new_port->handle);
new_port->handle = 0;
return(-1);
}
mask = FT_EVENT_RXCHAR | FT_EVENT_MODEM_STATUS;
status = FT_SetEventNotification(new_port->handle,mask,new_port->event_handle);
if (status != FT_OK)
{
printf("Setting event notification failed.\n");
}
FT_SetTimeouts(new_port->handle,400,0);
return(0);
}
}
int port_close(port_t *port)
{
if (!port)
return(-1);
if ((port->event_handle) != NULL)
{
CloseHandle(port->event_handle);
port->event_handle = NULL;
FT_Purge(port->handle, FT_PURGE_RX | FT_PURGE_TX);
FT_Close(port->handle);
port->handle = 0;
}
port->device = 0;
free(port);
return(1);
}
int port_set_params(port_t *port, uint32_t speed, uint8_t rtscts)
{
FT_STATUS status;
if (!port) return -1;
status = FT_SetBaudRate (port->handle, speed);
if (status != FT_OK) return -1;
if (speed == 9600)
{
status = FT_SetDataCharacteristics(port->handle, FT_BITS_8, FT_STOP_BITS_2, FT_PARITY_NONE);
}
else
{
status = FT_SetDataCharacteristics(port->handle, FT_BITS_8, FT_STOP_BITS_1, FT_PARITY_NONE);
}
if (status != FT_OK) return -1;
if (rtscts)
{
status = FT_SetFlowControl(port->handle, FT_FLOW_RTS_CTS, 0, 0);
}
else
{
status = FT_SetFlowControl(port->handle, FT_FLOW_NONE, 0, 0);
}
if (status != FT_OK) return -1;
FT_Purge(port->handle, FT_PURGE_RX | FT_PURGE_TX);
return(0);
}
int port_dtr_set(port_t *port)
{
FT_STATUS status;
if (!port) return(-1);
status = FT_SetDtr(port->handle);
if (status != FT_OK)
{
printf("Control failed.\n");
return -1;
}
return 0;
}
int port_dtr_clear(port_t *port)
{
FT_STATUS status;
if (!port) return(-1);
status = FT_ClrDtr(port->handle);
if (status != FT_OK)
{
printf("Control failed.\n");
return -1;
}
return 0;
}
int port_rts_set(port_t *port)
{
FT_STATUS status;
if (!port) return(-1);
status = FT_SetRts(port->handle);
if (status != FT_OK)
{
printf("Control failed.\n");
return -1;
}
return 0;
}
int port_rts_clear(port_t *port)
{
FT_STATUS status;
if (!port) return(-1);
status = FT_ClrRts(port->handle);
if (status != FT_OK)
{
printf("Control failed.\n");
return -1;
}
return 0;
}
int port_write(port_t *port, unsigned char *buffer, size_t buflen)
{
FT_STATUS status;
DWORD bytes_out;
if (!port) return -1;
// FT_Purge(port->handle, FT_PURGE_RX);
status = FT_Write (port->handle, (LPVOID) buffer, (DWORD) buflen,&bytes_out);
if (status != FT_OK) return -1;
return 0;
}
int port_read(port_t *port, unsigned char *buffer, size_t buflen)
{
DWORD l = 0;
FT_STATUS status;
status = FT_Read(port->handle, buffer, buflen, &l);
return((int) l);
}
int port_get(port_t *port, unsigned char *buffer, int timeout)
{
DWORD bytes = 0;
FT_STATUS status;
FT_SetTimeouts(port->handle, timeout, 0);
status = FT_Read(port->handle, buffer, 1, &bytes);
if (status != FT_OK)
{
return(-1);
}
return bytes;
}
int port_readline(port_t *port, unsigned char *buffer, int buf_size, int timeout)
{
int length = 0;
DWORD bytes = 0;
FT_STATUS status;
FT_SetTimeouts(port->handle, timeout, 0);
do
{
status = FT_Read(port->handle, &buffer[length], 1, &bytes);
length += bytes;
if ((status != FT_OK) || (bytes == 0))
{
return(length);
}
else
{
if (buffer[length-1] == '\n')
{
buf_size = length;
}
}
}while(length < buf_size);
buffer[length] = 0;
if(length != 0)
return length;
else
return(-1);
}
int port_write_echo(port_t *port, char *string)
{
int length = 0;
int retry = 0;
unsigned char byte;
DWORD bytes_out;
FT_STATUS status;
FT_Purge(port->handle, FT_PURGE_RX | FT_PURGE_TX);
while( (string[length]) && (retry < 100) )
{
retry = 0;
while (retry++ < 100)
{
status = FT_Write (port->handle, (LPVOID) &string[length], (DWORD) 1,&bytes_out);
if (status != FT_OK) return -1;
if (port_get(port, &byte, 1000) == 1)
{
/* printf("%c",byte);*/
if (byte == string[length])
{
retry = 0;
length++;
break;
}
else retry = 100;
}
else usleep(500);
}
}
if ((string[strlen(string)-1] == '\r') && (retry < 100) )
{ /*wait for \n*/
retry = 0;
while (retry++ < 100)
{
if (port_get(port, &byte, 1000) == 1)
{
/* printf("%c",byte);*/
break;
}
else usleep(500);
}
}
if (retry >= 100) return 0;
else return length;
}
#if 0
int port_write_echo(port_t *port, char *string)
{
int length = 0;
int retry = 0;
unsigned char byte;
while( (string[length]) && (retry < 100) )
{
port_write(port, (unsigned char *) &string[length], 1);
while (retry++ < 100)
{
if (port_read(port, &byte, 1) == 1)
{
/* printf("%c",byte);*/
if (byte == string[length])
{
retry = 0;
length++;
break;
}
else retry = 100;
}
else usleep(1000);
}
}
if ((string[strlen(string)-1] == '\r') && (retry < 100) )
{ /*wait for \n*/
retry = 0;
while (retry++ < 100)
{
if (port_read(port, &byte, 1) == 1)
{
/* printf("%c",byte);*/
break;
}
else usleep(1000);
}
}
if (retry >= 100) return 0;
else return length;
}
int port_write_8byte_no_echo(port_t *port, int dlen, char *string)
{
int length = 0;
int total_len;
int wrbytes = 4;
total_len = dlen;
/* printf("total: %d, length: %d, dlen: %d.\n", total_len, length, dlen); */
while(total_len > length)
{
if((total_len - length) >= wrbytes)
{
port_write(port, (unsigned char *)&string[length], wrbytes);
length += wrbytes;
}
else
{
port_write(port, (unsigned char *)&string[length], total_len - length);
length += total_len - length;
}
usleep(1250);
}
return(length);
}
#endif