2 * (c) 2011 Siegen, Germany by Nils Faerber
16 #include "metawatch_protocol.h"
17 #include "crc16ccitt.h"
20 #define MW_FRAME_DELAY 0x00
22 void dump_frame(unsigned char *frame, int len)
27 fprintf(stderr, "0x%02x ", frame[i]);
28 fprintf(stderr, "\n");
32 int mw_send_frame(int mw_fd, unsigned char msg_type, unsigned char options, unsigned char *data, unsigned char len)
35 unsigned char frame[64];
36 int tlen = len + 6; /* payload + 6 bytes frameing */
44 if (data != NULL && len > 0)
45 memcpy(frame+4, data, len);
47 crc = crc16ccitt(frame, len+4);
48 *(unsigned short *)(frame+len+4) = crc;
50 dump_frame(frame, tlen);
52 while (((ret = write(mw_fd, frame, tlen)) >= 0) && (tlen > 0))
56 usleep(MW_FRAME_DELAY);
58 if (tlen == 0 && ret >= 0)
65 * host to watch commands
68 void mw_set_rtc(int mw_fd, unsigned char clk1224, unsigned char date_fmt)
73 unsigned char data[32];
76 localtime_r(&mtime, &mtm);
78 year = mtm.tm_year + 1900;
79 data[0] = (year & 0x0f00) >> 8;
80 data[1] = (year & 0x00ff);
81 data[2] = mtm.tm_mon + 1;
82 data[3] = mtm.tm_mday;
83 data[4] = mtm.tm_wday;
84 data[5] = mtm.tm_hour;
90 mw_send_frame(mw_fd, MW_SET_REAL_TIME_CLOCK, 0, data, 10);
93 void mw_set_vibrate_mode(int mw_fd, unsigned char enable, unsigned short on_time, unsigned short off_time, unsigned char cycles)
95 unsigned char mdata[7];
98 *(unsigned short *)(mdata+1) = on_time; /* miliseconds */
99 *(unsigned short *)(mdata+3) = off_time; /* miliseconds */
101 mw_send_frame(mw_fd, MW_SET_VIBRATE_MODE, 0, mdata, 6);
104 void mw_configure_watch_mode(int mw_fd, unsigned char mode, unsigned char save, unsigned char timeout, unsigned char invert)
106 unsigned char mdata[3];
108 mdata[0] = timeout; /* seconds */
109 mdata[1] = invert; /* 0=normal, 1=invert */
110 mw_send_frame(mw_fd, MW_CONFIGURE_MODE, (mode & 0x0f) | ((save & 0x01) << 3), mdata, 2);
113 void mw_update_display(int mw_fd, unsigned char mode, unsigned char copy)
115 mw_send_frame(mw_fd, MW_UPDATE_DISPLAY, (mode & 0x0f) | ((copy & 0x01) << 3), NULL, 0);
118 void mw_load_template(int mw_fd, unsigned char mode, unsigned char template_select)
120 mw_send_frame(mw_fd, MW_LOAD_TEMPLATE, (mode & 0x0f), &template_select, 1);
124 * send line for screen-mode mode from *buffer to watch, starting at display row row_offset
126 void mw_write_buffer(int mw_fd,
128 unsigned char numlines, /* number of lines, 0 or 1 */
129 unsigned char row_offset, /* start at row_offset in display, e.g. lower part in idle @31 */
130 unsigned char *buffer, int buflen)
132 unsigned char mdata[32];
134 buflen = 12 * (buflen / 12); /* crop to 12 bytes */
135 if ((numlines == 0 && buflen < 12) || (numlines == 1 && buflen < 24)) {
136 fprintf(stderr, "mw_write_buffer: bufferlen does not match number of lines\n");
139 memset(mdata, 0, 32);
140 mdata[0] = row_offset;
141 memcpy((mdata+1), buffer, 12);
143 mdata[0] = row_offset+1;
144 memcpy((mdata+13), (buffer+12), 12);
146 mw_send_frame(mw_fd, MW_WRITE_BUFFER, (mode & 0x0f) | (((numlines & 0x01)<< 3) & 0x10), mdata, numlines ? 13 : 26);
150 /* ------------------------------------------------------------------------ */
154 * watch responses, events or notifications
156 void mw_get_real_time_clock_response(int mw_fd, unsigned char *rtcrsp, int len)
160 unsigned char clk1224, date_fmt;
163 fprintf(stderr, "get real time clock response too short %d != 10\n", len);
167 year = *(unsigned short *)rtcrsp;
168 mtm.tm_year = year - 1900;
169 mtm.tm_mon = rtcrsp[2] - 1;
170 mtm.tm_mday = rtcrsp[3];
171 mtm.tm_wday = rtcrsp[4];
172 mtm.tm_hour = rtcrsp[5];
173 mtm.tm_min = rtcrsp[6];
174 mtm.tm_sec = rtcrsp[7];
176 date_fmt = rtcrsp[9];
178 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");
181 void mw_get_battery_voltage_response(int mw_fd, unsigned char *batrsp, int len)
183 unsigned short voltage = *(unsigned short *)batrsp;
184 unsigned char power_good = batrsp[2];
185 unsigned char bat_charging = batrsp[3];
187 fprintf(stderr, "battery is at %dV, %s and %s\n", voltage, power_good ? "power is good" : "power fault", bat_charging ? "charging" : "not charging");
190 /* ---------------------------------------------------------------------- */
192 int decode_frame(int mw_fd, unsigned char *buf, int len)
195 unsigned char msglen;
196 unsigned char msgtype;
197 unsigned char msgopt;
198 unsigned char *msgdata;
201 crc = *(unsigned short *)(buf+len-2);
202 if (crc != crc16ccitt(buf, len-2)) {
203 fprintf(stderr, "decode frame CRC error\n");
206 fprintf(stderr, "decode frame CRC OK\n");
207 if (buf[0] != MW_SOF) {
208 fprintf(stderr, "decode frame SOF not found\n");
211 fprintf(stderr, "decode frame found SOF\n");
219 case MW_GET_REAL_TIME_CLOCK_RSP:
220 mw_get_real_time_clock_response(mw_fd, msgdata, len-4-2);
222 case MW_GET_INFORMATION_STRING_RSP:
223 msgdata[len-4-2] = 0;
224 fprintf(stderr, "Got info string '%s'\n", (msgdata+4));
226 case MW_READ_BATTERY_VOLTAGE_RSP:
227 mw_get_battery_voltage_response(mw_fd, msgdata, len-4-2);
229 case MW_LOW_BATTERY_WARNING_MSG:
230 fprintf(stderr, "Watch battery low, please connect charger\n");
232 case MW_LOW_BATTERY_BT_OFF_MSG:
233 fprintf(stderr, "Watch battery extremely low - radio will turn off\n");
236 fprintf(stderr, "Unkown msgtype 0x%02x\n", msgtype);
244 void process_cmd(char *cmdline, int clinep, int mw_fd)
246 unsigned char mdata[32];
248 fprintf(stderr, "command: '%s'\n", cmdline);
250 if (strncmp(cmdline, "quit", 4) == 0) {
255 if (strncmp(cmdline, "srtc", 4) == 0) {
256 fprintf(stderr, "Setting RTC from system time...");
257 mw_set_rtc(mw_fd, MW_RTC_CLOCK_24HR, MW_RTC_DATE_DDMM);
258 fprintf(stderr, "OK\n");
260 if (strncmp(cmdline, "grtc", 4) == 0) {
261 mw_send_frame(mw_fd, MW_GET_REAL_TIME_CLOCK, 0, NULL, 0);
263 if (strncmp(cmdline, "gistr", 5) == 0) {
265 mw_send_frame(mw_fd, MW_GET_INFORMATION_STRING, 0, mdata, 1);
267 if (strncmp(cmdline, "gdtype", 6) == 0) {
268 mw_send_frame(mw_fd, MW_GET_DEVICE_TYPE, 0, NULL, 0);
270 if (strncmp(cmdline, "rvbat", 5) == 0) {
271 mw_send_frame(mw_fd, MW_READ_BATTERY_VOLTAGE_MSG, 0, NULL, 0);
273 if (strncmp(cmdline, "modecfg", 6) == 0) {
274 mw_configure_watch_mode(mw_fd, MW_SCREEN_MODE_IDLE, 0, 4, 1);
275 mw_update_display(mw_fd, MW_SCREEN_MODE_IDLE, 0);
277 if (strncmp(cmdline, "rbtcfg", 6) == 0) {
278 mdata[0] = 0; /* idle screen */
279 mdata[1] = 1; /* button index */
280 mdata[2] = 2; /* button press type */
281 mdata[3] = 3; /* callback message type */
282 mdata[4] = 4; /* callback message option */
283 mw_send_frame(mw_fd, MW_READ_BUTTON_CONFIG, 0, NULL, 0);
285 if (strncmp(cmdline, "svib", 4) == 0) {
286 mw_set_vibrate_mode(mw_fd, 1, 300, 300, 5);
294 struct termios tconfd;
296 unsigned char msg_buf[64];
297 unsigned char clinep = 0;
300 tcgetattr(0, &tconfd);
302 tconfd.c_oflag |= ONLCR | OPOST;
303 tconfd.c_lflag |= ISIG;
304 tcsetattr(0, TCSANOW, &tconfd);
308 FD_SET(mw_fd, &mfds);
310 memset(cmdline, 0, 128);
314 if (select(mw_fd+1, &mfds, NULL, NULL, NULL) > 0) {
315 if (FD_ISSET(mw_fd, &mfds)) {
316 rcvd = read(mw_fd, msg_buf, 64);
317 fprintf(stderr, "read %d bytes:\n", rcvd);
319 dump_frame(msg_buf, rcvd);
320 decode_frame(mw_fd, msg_buf, rcvd);
323 if (FD_ISSET(0, &mfds)) {
324 rcvd = read(0, (cmdline+clinep), 1);
326 if (cmdline[clinep] == '\r') {
328 cmdline[clinep--] = '\0';
329 process_cmd(cmdline, clinep, mw_fd);
331 memset(cmdline, 0, 128);
336 printf("\r> %s", cmdline);
345 FD_SET(mw_fd, &mfds);
351 int main(int argc, char **argv)
356 fprintf(stderr, "Usage:\n\t%s <devicename>\n", argv[0]);
362 mw_fd = open(argv[1], O_RDWR);