nica/metawatch
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More functions, changed license to LGPL

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This commit is contained in:
Nils Faerber 2011-07-23 19:08:06 +02:00
parent c8307dc90a
commit 8de8db41a6
1 changed files with 42 additions and 1 deletions
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43
metawatch.c
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@ -1,7 +1,7 @@
/*
* (c) 2011 Siegen, Germany by Nils Faerber
*
* license GPL
* license LGPL
*/
#include <stdio.h>
#include <sys/types.h>
@ -17,6 +17,8 @@
#include "crc16ccitt.h"
#define MW_FRAME_DELAY 0x00
void dump_frame(unsigned char *frame, int len)
{
int i;
@ -50,6 +52,9 @@ int mw_send_frame(int mw_fd, unsigned char msg_type, unsigned char options, unsi
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
@ -110,6 +115,41 @@ 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) << 3), 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 or 1 */
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 == 1) {
mdata[0] = row_offset+1;
memcpy((mdata+13), (buffer+12), 12);
};
mw_send_frame(mw_fd, MW_WRITE_BUFFER, (mode & 0x0f) | (((numlines & 0x01)<< 3) & 0x10), mdata, numlines ? 13 : 26);
}
/* ------------------------------------------------------------------------ */
/*
* watch responses, events or notifications
*/
@ -147,6 +187,7 @@ void mw_get_battery_voltage_response(int mw_fd, unsigned char *batrsp, int len)
fprintf(stderr, "battery is at %dV, %s and %s\n", voltage, power_good ? "power is good" : "power fault", bat_charging ? "charging" : "not charging");
}
/* ---------------------------------------------------------------------- */
int decode_frame(int mw_fd, unsigned char *buf, int len)
{