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