void draw_thread(void *arg)
{
struct vfd_ioctl_data *data;
struct vfd_ioctl_data draw_data;
unsigned char buf[17];
int count = 0;
int pos = 0;
data = (struct vfd_ioctl_data *)arg;
draw_data.length = data->length;
memset(draw_data.data, 0, sizeof(draw_data.data));
memcpy(draw_data.data,data->data,data->length);
thread_stop = 0;
count = utf8_len(&draw_data.data[0], draw_data.length);
if(count > mode_digit)
{
while(pos < draw_data.length)
{
if(kthread_should_stop())
{
thread_stop = 1;
return;
}
clear_display();
memset(buf,0, sizeof(buf));
int countb = utf8_count(&draw_data.data[pos], draw_data.length - pos, 8);
memcpy(buf, &draw_data.data[pos], countb);
YWPANEL_VFD_ShowString(buf);
msleep(200);
if (draw_data.data[pos] > 128)
{
pos += 2;
} else {
pos += 1;
}
}
}
if(count > 0)
{
clear_display();
memset(buf,0, sizeof(buf));
int countb = utf8_count(&draw_data.data[0], draw_data.length, 8);
memcpy(buf, draw_data.data, countb);
YWPANEL_VFD_ShowString(buf);
}
else VFD_clr();
thread_stop = 1;
}
static int draw_thread(void *arg)
{
struct vfd_ioctl_data *data = (struct vfd_ioctl_data *) arg;
char buf[sizeof(data->data) + 2 * DISPLAYWIDTH_MAX];
int len = data->length;
int off = 0;
int doton3 = 0;
if (YWPANEL_width == 4 && len == 5 && data->data[2] == '.')
doton3 = 1;
if (len > YWPANEL_width + doton3) {
memset(buf, ' ', sizeof(buf));
off = YWPANEL_width - 1;
memcpy(buf + off, data->data, len);
len += off;
buf[len + YWPANEL_width] = 0;
} else {
memcpy(buf, data->data, len);
buf[len] = 0;
}
draw_thread_stop = 0;
if(len > YWPANEL_width + doton3) {
int pos;
for(pos = 0; pos < len; pos++) {
int i;
if(kthread_should_stop()) {
draw_thread_stop = 1;
return 0;
}
YWPANEL_VFD_ShowString(buf + pos);
// sleep 200 ms
for (i = 0; i < 5; i++) {
if(kthread_should_stop()) {
draw_thread_stop = 1;
return 0;
}
msleep(40);
}
}
}
clear_display();
if(len > 0)
YWPANEL_VFD_ShowString(buf + off);
draw_thread_stop = 1;
return 0;
}
int run_draw_thread(struct vfd_ioctl_data *draw_data)
{
if(down_interruptible (&draw_thread_sem))
return -ERESTARTSYS;
// return if there's already a draw task running for the same text
if(!draw_thread_stop && draw_task && (last_draw_data.length == draw_data->length)
&& !memcmp(&last_draw_data.data, draw_data->data, draw_data->length)) {
up(&draw_thread_sem);
return 0;
}
memcpy(&last_draw_data, draw_data, sizeof(struct vfd_ioctl_data));
// stop existing thread, if any
if(!draw_thread_stop && draw_task) {
kthread_stop(draw_task);
while(!draw_thread_stop)
msleep(1);
draw_task = 0;
}
if (draw_data->length < YWPANEL_width) {
char buf[DISPLAYWIDTH_MAX + 1];
memset(buf, 0, sizeof(buf));
memset(buf, ' ', sizeof(buf) - 1);
if (draw_data->length)
memcpy(buf, draw_data->data, draw_data->length);
YWPANEL_VFD_ShowString(buf);
} else {
draw_thread_stop = 2;
draw_task = kthread_run(draw_thread,draw_data,"draw_thread");
//wait until thread has copied the argument
while(draw_thread_stop == 2)
msleep(1);
}
up(&draw_thread_sem);
return 0;
}
static int draw_thread(void *arg)
{
struct vfd_ioctl_data *data = (struct vfd_ioctl_data *) arg;
char buf[sizeof(data->data) + 2 * DISPLAYWIDTH_MAX];
char buf2[sizeof(data->data) + 2 * DISPLAYWIDTH_MAX];
int len = data->length;
int off = 0;
int saved = 0;
if (panel_version.DisplayInfo == YWPANEL_FP_DISPTYPE_LED && len > 2 && data->data[2] == '.')
saved = 1;
if (len - saved > YWPANEL_width) {
memset(buf, ' ', sizeof(buf));
off = YWPANEL_width - 1;
memcpy(buf + off, data->data, len);
len += off;
buf[len + YWPANEL_width] = 0;
} else {
memcpy(buf, data->data, len);
buf[len] = 0;
}
draw_thread_stop = 0;
if (saved) {
int i;
for (i = 0; i < len; i++)
buf2[i] = (buf[i] == '.') ? ' ' : buf[i];
buf2[i] = 0;
}
if(len - saved > YWPANEL_width) {
char *b = saved ? buf2 : buf;
int pos;
for(pos = 0; pos < len; pos++) {
int i;
if(kthread_should_stop()) {
draw_thread_stop = 1;
return 0;
}
YWPANEL_VFD_ShowString(b + pos);
// sleep 200 ms
for (i = 0; i < 5; i++) {
if(kthread_should_stop()) {
draw_thread_stop = 1;
return 0;
}
msleep(40);
}
}
}
clear_display();
if(len > 0)
YWPANEL_VFD_ShowString(buf + off);
draw_thread_stop = 1;
return 0;
}
static void clear_display(void)
{
YWPANEL_VFD_ShowString(" ");
}