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metawatch/metawatch.c
Nils Faerber 6e7a56e3e8 Add button messages and handling
2011-08-03 00:50:24 +02:00

446 lines
12 KiB
C
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/*
* (c) 2011 Siegen, Germany by Nils Faerber <nils.faerber@kernelconcepts.de>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <termios.h>
#include <ctype.h>
#include "metawatch.h"
#include "metawatch_protocol.h"
#include "crc16ccitt.h"
#ifdef DEBUG
const char *mw_screen_mode_names[] = {
"idle screen",
"application screen",
"notification screen",
"scroll"
};
const char *mw_status_string[] = {
"Reserved",
"Mode Change",
"Display Timeout"
};
#endif
#define MW_FRAME_DELAY 0x00
void dump_frame(unsigned char *frame, int len)
{
int i;
for (i=0; i<len; i++)
fprintf(stderr, "0x%02x ", frame[i]);
fprintf(stderr, "\n");
}
int mw_send_frame(int mw_fd, unsigned char msg_type, unsigned char options, unsigned char *data, unsigned char len)
{
unsigned short crc;
unsigned char frame[64];
int tlen = len + 6; /* payload + 6 bytes frameing */
int ret;
memset(frame, 0, 64);
frame[0] = MW_SOF;
frame[1] = len + 6;
frame[2] = msg_type;
frame[3] = options;
if (data != NULL && len > 0)
memcpy(frame+4, data, len);
crc = crc16ccitt(frame, len+4);
*(unsigned short *)(frame+len+4) = crc;
#ifdef DEBUG
dump_frame(frame, tlen);
#endif
while (((ret = write(mw_fd, frame, tlen)) >= 0) && (tlen > 0))
tlen -= ret;
if (MW_FRAME_DELAY)
usleep(MW_FRAME_DELAY);
if (tlen == 0 && ret >= 0)
return 0;
else
return ret;
}
/* ----------------------------------------------------------------------
* Host to watch commands
* ---------------------------------------------------------------------- */
void mw_set_rtc(int mw_fd, unsigned char clk1224, unsigned char date_fmt)
{
time_t mtime;
struct tm mtm;
unsigned short year;
unsigned char data[32];
mtime = time(NULL);
localtime_r(&mtime, &mtm);
year = mtm.tm_year + 1900;
data[0] = (year & 0x0f00) >> 8;
data[1] = (year & 0x00ff);
data[2] = mtm.tm_mon + 1;
data[3] = mtm.tm_mday;
data[4] = mtm.tm_wday;
data[5] = mtm.tm_hour;
data[6] = mtm.tm_min;
data[7] = mtm.tm_sec;
data[8] = clk1224;
data[9] = date_fmt;
mw_send_frame(mw_fd, MW_SET_REAL_TIME_CLOCK, 0, data, 10);
}
void mw_set_vibrate_mode(int mw_fd, unsigned char enable, unsigned short on_time, unsigned short off_time, unsigned char cycles)
{
unsigned char mdata[7];
mdata[0] = enable;
*(unsigned short *)(mdata+1) = on_time; /* miliseconds */
*(unsigned short *)(mdata+3) = off_time; /* miliseconds */
mdata[5] = cycles;
mw_send_frame(mw_fd, MW_SET_VIBRATE_MODE, 0, mdata, 6);
}
void mw_configure_watch_mode(int mw_fd, unsigned char mode, unsigned char save, unsigned char timeout, unsigned char invert)
{
unsigned char mdata[3];
mdata[0] = timeout; /* seconds */
mdata[1] = invert; /* 0=normal, 1=invert */
mw_send_frame(mw_fd, MW_CONFIGURE_MODE, (mode & 0x0f) | ((save & 0x01) << 4), mdata, 2);
}
void mw_update_display(int mw_fd, unsigned char mode, unsigned char copy)
{
mw_send_frame(mw_fd, MW_UPDATE_DISPLAY, (mode & 0x0f) | ((copy & 0x01) << 4), NULL, 0);
}
void mw_load_template(int mw_fd, unsigned char mode, unsigned char template_select)
{
mw_send_frame(mw_fd, MW_LOAD_TEMPLATE, (mode & 0x0f), &template_select, 1);
}
/*
* send line for screen-mode mode from *buffer to watch, starting at display row row_offset
*/
void mw_write_buffer(int mw_fd,
unsigned char mode,
unsigned char numlines, /* number of lines, 0=two lines or 1=one line */
unsigned char row_offset, /* start at row_offset in display, e.g. lower part in idle @31 */
unsigned char *buffer, int buflen)
{
unsigned char mdata[32];
buflen = 12 * (buflen / 12); /* crop to 12 bytes */
if ((numlines == 0 && buflen < 12) || (numlines == 1 && buflen < 24)) {
fprintf(stderr, "mw_write_buffer: bufferlen does not match number of lines\n");
return;
};
memset(mdata, 0, 32);
mdata[0] = row_offset;
memcpy((mdata+1), buffer, 12);
if (numlines == 0) {
mdata[13] = row_offset+1;
memcpy((mdata+14), (buffer+12), 12);
};
mw_send_frame(mw_fd, MW_WRITE_BUFFER, (mode & 0x0f) | (((numlines & 0x01)<< 4) & 0x10), mdata, numlines ? 13 : 26);
}
void mw_enable_button(int mw_fd,
unsigned char mode,
unsigned char button_index,
unsigned char press_type,
unsigned char callback_type,
unsigned char callback_option)
{
unsigned char mdata[32];
memset(mdata, 0, 32);
mdata[0] = mode;
mdata[1] = button_index;
mdata[2] = press_type;
mdata[3] = callback_type;
mdata[4] = callback_option;
mw_send_frame(mw_fd, MW_ENABLE_BUTTON, 0, mdata, 5);
}
void mw_disable_button(int mw_fd,
unsigned char mode,
unsigned char button_index,
unsigned char press_type)
{
unsigned char mdata[32];
memset(mdata, 0, 32);
mdata[0] = mode;
mdata[1] = button_index;
mdata[2] = press_type;
mw_send_frame(mw_fd, MW_ENABLE_BUTTON, 0, mdata, 3);
}
/* ----------------------------------------------------------------------
* Watch responses, events or notifications
* ---------------------------------------------------------------------- */
void mw_get_real_time_clock_response(int mw_fd, unsigned char *rtcrsp, int len)
{
struct tm mtm;
unsigned short year;
unsigned char clk1224, date_fmt;
if (len != 10) {
fprintf(stderr, "get real time clock response too short %d != 10\n", len);
return;
}
year = *(unsigned short *)rtcrsp;
mtm.tm_year = year - 1900;
mtm.tm_mon = rtcrsp[2] - 1;
mtm.tm_mday = rtcrsp[3];
mtm.tm_wday = rtcrsp[4];
mtm.tm_hour = rtcrsp[5];
mtm.tm_min = rtcrsp[6];
mtm.tm_sec = rtcrsp[7];
clk1224 = rtcrsp[8];
date_fmt = rtcrsp[9];
fprintf(stderr, "watch RTC is %s, clock format is %s, date format is %s\n", asctime(&mtm), clk1224 ? "24h" : "AM/PM", date_fmt ? "DD/MM" : "MM/DD");
}
void mw_get_battery_voltage_response(int mw_fd, unsigned char *batrsp, int len)
{
unsigned short voltage = *(unsigned short *)batrsp;
unsigned char power_good = batrsp[2];
unsigned char bat_charging = batrsp[3];
fprintf(stderr, "battery is at %dV, %s and %s\n", voltage, power_good ? "power is good" : "power fault", bat_charging ? "charging" : "not charging");
}
void mw_read_button_config_response(int mw_fd, unsigned char *btnrsp, int len)
{
fprintf(stderr, "read button config response\n");
fprintf(stderr, "screen mode : 0x%02x\n", btnrsp[0]);
fprintf(stderr, "button index : 0x%02x\n", btnrsp[1]);
fprintf(stderr, "mask table : 0x%02x (", btnrsp[2]);
fprintf(stderr, "%s ", (btnrsp[2] & 0x01) ? "Absolute, " : "");
fprintf(stderr, "%s ", (btnrsp[2] & 0x02) ? "Press&Release, " : "");
fprintf(stderr, "%s ", (btnrsp[2] & 0x04) ? "Press&Hold, " : "");
fprintf(stderr, "%s ", (btnrsp[2] & 0x08) ? "Press&LongHold, " : "");
fprintf(stderr, "%s ", (btnrsp[2] & 0x10) ? "Immediate" : "");
fprintf(stderr, ")\n");
fprintf(stderr, "callback msg type: 0x%02x\n", btnrsp[3]);
fprintf(stderr, "callback msg opts: 0x%02d\n", btnrsp[4]);
}
void mw_read_light_sensor_response(int mw_fd, unsigned char *lightrsp, int len)
{
unsigned char power_good = lightrsp[0];
unsigned char bat_charging = lightrsp[1];
unsigned short voltage = *(unsigned short *)(lightrsp+2);
fprintf(stderr, "light sensor is at %d, power stat: %s and %s\n", voltage, power_good ? "power is good" : "power fault", bat_charging ? "charging" : "not charging");
}
void mw_status_change_event(int mw_fd, unsigned char option, unsigned char *statrsp, int len)
{
#ifdef DEBUG
fprintf(stderr, "Status change event for mode %s: %s\n", mw_screen_mode_names[option&0x0f], mw_status_string[statrsp[0]]);
#endif
}
/* ----------------------------------------------------------------------
* Protocol handling
* ---------------------------------------------------------------------- */
int decode_frame(int mw_fd, unsigned char *buf, int len)
{
unsigned short crc;
unsigned char msglen;
unsigned char msgtype;
unsigned char msgopt;
unsigned char *msgdata;
/* check frame */
crc = *(unsigned short *)(buf+len-2);
if (crc != crc16ccitt(buf, len-2)) {
fprintf(stderr, "decode frame CRC error\n");
return 1;
}
#ifdef DEBUG
else
fprintf(stderr, "decode frame CRC OK\n");
#endif
if (buf[0] != MW_SOF) {
fprintf(stderr, "decode frame SOF not found\n");
return 1;
}
#ifdef DEBUG
else
fprintf(stderr, "decode frame found SOF\n");
#endif
msglen = buf[1];
msgtype = buf[2];
msgopt = buf[3];
msgdata = (buf+4);
switch (msgtype) {
case MW_GET_DEVICE_TYPE_RSP:
fprintf(stderr, "Got device type ");
switch(msgdata[0]) {
case 0:
fprintf(stderr, "Reserved\n");
break;
case 1:
fprintf(stderr, "Ana-Digi\n");
break;
case 2:
fprintf(stderr, "Digital\n");
break;
case 3:
fprintf(stderr, "Development Board Digital\n");
break;
case 4:
fprintf(stderr, "Development Board Ana-Digi\n");
break;
default:
fprintf(stderr, "unknown %d\n", msgdata[0]);
break;
};
break;
case MW_GET_INFORMATION_STRING_RSP:
msgdata[len-2] = 0;
fprintf(stderr, "Got info string '%s'\n", msgdata);
break;
case MW_GET_REAL_TIME_CLOCK_RSP:
mw_get_real_time_clock_response(mw_fd, msgdata, len-2);
break;
case MW_READ_BATTERY_VOLTAGE_RSP:
mw_get_battery_voltage_response(mw_fd, msgdata, len-2);
break;
case MW_READ_LIGHT_SENSOR_RSP:
mw_read_light_sensor_response(mw_fd, msgdata, len-2);
break;
case MW_LOW_BATTERY_WARNING_MSG:
fprintf(stderr, "Watch battery low, please connect charger\n");
break;
case MW_READ_BUTTON_CONFIG_RSP:
mw_read_button_config_response(mw_fd, msgdata, len-2);
break;
case MW_BUTTON_EVENT_MESSAGE:
fprintf(stderr, "Button event message\n");
break;
case MW_LOW_BATTERY_BT_OFF_MSG:
fprintf(stderr, "Watch battery extremely low - radio will turn off\n");
break;
case MW_STATUS_CHANGE_EVENT:
mw_status_change_event(mw_fd, msgopt, msgdata, len-2);
break;
default:
fprintf(stderr, "Unkown msgtype 0x%02x\n", msgtype);
break;
};
return 0;
}
/* ----------------------------------------------------------------------
* Convenience functions not strictly part of the protocol
* ---------------------------------------------------------------------- */
/* if flip=1 bits in each byte are inverted 7->1, 6->2, 5->3,...
if invert=1 each byte is inverted
*/
void bmap_buffer_flipinvert(unsigned char flip, unsigned char invert, unsigned char *buf, int len)
{
int i;
unsigned char tmp;
while (len--) {
tmp = 0;
if (flip) {
for (i=0; i<8; i++)
tmp |= ((*buf & (1<<i)) >> i) << (7-i);
// fprintf(stderr, "0x%02x -> 0x%02x\n", *buf, tmp);
} else
tmp = *buf;
*buf = invert ? ~tmp : tmp;
buf++;
}
}
void mw_send_bitmap(int mw_fd, unsigned char mode, int width, int height, int offset, unsigned char *bmapbuf, int buflen)
{
#ifdef DEBUG
unsigned int i, x;
#endif
unsigned int y, rowlength;
unsigned char mw_buf[24];
rowlength = (((width-1) / 8) + 1);
if ((height + offset) > 96)
height = 96 - offset;
#ifdef DEBUG
fprintf(stderr, "row length = %d bytes\n", rowlength);
fprintf(stderr, "bitmap resolution is %d x %d\n", width, height);
fprintf(stderr, "\n");
for (y=0; y<height; y++) {
for (x=0; x<rowlength; x++) {
for (i=0; i<8; i++)
fprintf(stderr, "%c", (bmapbuf[(y*rowlength)+x] & (1<<(7-i))) ? '.' : ' ');
}
fprintf(stderr, "\n");
}
fprintf(stderr, "\n");
#endif
for (y=0; y<height; y+=2) {
memset(mw_buf, 0, 24);
memcpy(mw_buf, (bmapbuf+(y*rowlength)), (rowlength > 12) ? 12 : rowlength);
memcpy((mw_buf+12), (bmapbuf+((y+1)*rowlength)), (rowlength > 12) ? 12 : rowlength);
mw_write_buffer(mw_fd, mode, 0, offset+y, mw_buf, 24);
}
}
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