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/*
* gcc -o lomoco_battery lomoco_battery.c
*
* MX/VX/VX Nano proof of concept code
*
* Copryright 2008 (c) Andreas Schneider <mail@cynapses.org>
*
* License: GPLv2 or later
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <asm/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <linux/hiddev.h>
#define VERSION "0.0.1"
#define VENDOR 0x046d
#define MOUSE_VX 0xc518
#define MOUSE_VX_NANO 0xc521
#define MOUSE_MX 0xc51a
#define MOUSE_MX_AIR 0xc525
#define MOUSE_MX_1100 0xc526
static int send_report(int fd, int id, const unsigned int *buf, size_t size) {
struct hiddev_report_info rinfo;
struct hiddev_usage_ref uref;
int i, err;
for (i = 0; i < size; i++) {
memset(&uref, 0, sizeof(uref));
uref.report_type = HID_REPORT_TYPE_OUTPUT;
uref.report_id = id;
uref.field_index = 0;
uref.usage_index = i;
uref.usage_code = 0xff000001;
uref.value = buf[i];
err = ioctl(fd, HIDIOCSUSAGE, &uref);
if (err < 0)
return err;
}
memset(&rinfo, 0, sizeof(rinfo));
rinfo.report_type = HID_REPORT_TYPE_OUTPUT;
rinfo.report_id = id;
rinfo.num_fields = 1;
err = ioctl(fd, HIDIOCSREPORT, &rinfo);
return err;
}
static int query_report(int fd, int id, unsigned int *buf, size_t size) {
struct hiddev_usage_ref_multi uref;
struct hiddev_report_info rinfo;
int i = 0, rc = -1;
rinfo.report_type = HID_REPORT_TYPE_INPUT;
rinfo.report_id = id;
rinfo.num_fields = 1;
rc = ioctl(fd, HIDIOCGREPORT, &rinfo);
if (rc < 0) {
perror("HIDIOCGREPORT");
return rc;
}
uref.uref.report_type = HID_REPORT_TYPE_INPUT;
uref.uref.report_id = id;
uref.uref.field_index = 0;
uref.uref.usage_index = 0;
uref.num_values = size;
rc = ioctl(fd, HIDIOCGUSAGES, &uref);
if (rc < 0) {
perror("HIDIOCGUSAGES");
return rc;
}
for (i = 0; i < size; i++) {
buf[i] = uref.values[i];
}
return rc;
}
void send_msg(int fd, int id, int c0, int c1, int c2, int c3, int c4, int c5)
{
int rc = -1;
unsigned int b[6];
b[0] = c0;
b[1] = c1;
b[2] = c2;
b[3] = c3;
b[4] = c4;
b[5] = c5;
rc = send_report(fd, id, b, 6);
if (rc < 0) {
perror("error sending to device");
close(fd);
exit(1);
}
}
int main (int argc, char **argv) {
int fd = -1;
int i = 0;
int version = 0;
struct hiddev_devinfo device_info;
unsigned int buf[6] = {0};
printf("VX hack version: %s\n\n", VERSION);
/* ioctl() requires a file descriptor, so we check we got one, and
then open it */
if (argc != 2) {
fprintf(stderr, "Usage: %s hiddevice\n - hiddevice probably /dev/usb/hiddev0\n", argv[0]);
exit(1);
}
if ((fd = open(argv[1], O_RDONLY)) < 0) {
perror("hiddev open");
exit(1);
}
/* ioctl() accesses the underlying driver */
ioctl(fd, HIDIOCGVERSION, &version);
/* the HIDIOCGVERSION ioctl() returns an int
* so we unpack it and display it
* we create a patch
*/
printf("hiddev driver version is %d.%d.%d\n", version >> 16, (version >> 8) & 0xff, version & 0xff);
/* suck out some device information */
ioctl(fd, HIDIOCGDEVINFO, &device_info);
/* the HIDIOCGDEVINFO ioctl() returns hiddev_devinfo
* structure - see <linux/hiddev.h>
* So we work through the various elements, displaying
* each of them
*/
printf("vendor 0x%04hx product 0x%04hx version 0x%04hx ",
device_info.vendor, device_info.product,
device_info.version);
printf("has %i application%s ", device_info.num_applications,
(device_info.num_applications==1?"":"s"));
printf("and is on bus: %d devnum: %d ifnum: %d\n",
device_info.busnum, device_info.devnum,
device_info.ifnum);
/* We have a G5? */
if((device_info.vendor == (short)VENDOR) &&
((device_info.product == (short)MOUSE_VX) ||
(device_info.product == (short)MOUSE_VX_NANO) ||
(device_info.product == (short)MOUSE_MX_AIR) ||
(device_info.product == (short)MOUSE_MX_1100) ||
(device_info.product == (short)MOUSE_MX))) {
char dev[256] = {0};
ioctl(fd, HIDIOCGNAME(255), &dev);
if(device_info.product == (short)MOUSE_VX)
printf(">> VX Revolution (%s) detected!\n", dev);
if(device_info.product == (short)MOUSE_VX_NANO)
printf(">> VX Nano (%s) detected!\n", dev);
if(device_info.product == (short)MOUSE_MX)
printf(">> MX Revolution (%s) detected!\n", dev);
if(device_info.product == (short)MOUSE_MX_AIR)
printf(">> MX Air (%s) detected!\n", dev);
/*
* Initialise the internal report structures
*/
if (ioctl(fd, HIDIOCINITREPORT, 0) < 0) {
perror("hid report init failed");
exit(1);
}
printf(">> Battery information:\n");
send_msg(fd, 0x10, 0x01, 0x81, 0x0d, 0x01, 0x00, 0x00);
sleep(1);
if (query_report(fd, 0x10, buf, 6) < 0) {
perror("query failed");
close(fd);
exit(1);
}
printf("query result: ");
for (i = 0; i < 6; i++) {
printf(" %02x", buf[i]);
}
printf("\n");
if (buf[3] > 0 && buf[3] < 100 && (buf[3] % 5) == 0) {
printf("battery status: %d%\n", buf[3] == 0x7f ? 0 : buf[3]);
switch (buf[5]) {
case 0x30:
printf("battery: running on battery\n");
break;
case 0x50:
printf("battery: charging\n");
break;
case 0x90:
printf("battery: fully charged\n");
break;
}
printf("could be electric current: %d\n", buf[4]);
}
}
close(fd);
exit(0);
}
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