+ sig_send(lp_proc, SIG_USER0);
+ }
+}
+
+static void NORETURN lp_process(void)
+{
+ while (1)
+ {
+ start = get_hp_ticks();
+ sig_send(hp_proc, SIG_USER0);
+ sig_wait(SIG_USER0);
+ }
+}
+
+static void res_process(void)
+{
+ const char spinner[] = {'/', '-', '\\', '|'};
+ int i;
+ char c;
+
+ for (i = 0; ; i++)
+ {
+ /* Show context switch (in clock cycles) */
+ c = spinner[i % countof(spinner)];
+ text_xprintf(&lcd_bitmap, 3, 0, TEXT_CENTER | TEXT_FILL, "%c Context switch %c", c, c);
+ text_xprintf(&lcd_bitmap, 5, 0, TEXT_FILL, " %lu clock cycles", end - start);
+ /* Show context switch (in usec) */
+ text_xprintf(&lcd_bitmap, 6, 0, TEXT_FILL,
+ " %lu.%lu usec",
+ ((end - start) * 1000000) / CPU_FREQ,
+ ((end - start) * (100000000 / CPU_FREQ)) % 100);
+ rit128x96_blitBitmap(&lcd_bitmap);
+ timer_delay(5);
+ if (kbd_peek() & KEY_MASK)
+ break;
+ }
+}
+
+static void context_switch_test(Bitmap *bm)
+{
+ gfx_bitmapClear(bm);
+ text_xprintf(bm, 0, 0, TEXT_FILL,
+ "CPU: Cortex-M3 %luMHz", CPU_FREQ / 1000000);
+ rit128x96_blitBitmap(bm);
+ text_xprintf(bm, 1, 0, TEXT_FILL, "Board: LM3S1968 EVB");
+ rit128x96_blitBitmap(bm);
+
+ res_process();
+}
+
+static void uptime(Bitmap *bm)
+{
+ extern const Font font_luBS14;
+ const Font *old_font;
+
+ old_font = bm->font;
+
+ /* Set big font */
+ gfx_bitmapClear(bm);
+ gfx_setFont(bm, &font_luBS14);
+ text_xprintf(bm, 0, 0, TEXT_FILL | TEXT_CENTER, "Uptime");
+ while (1)
+ {
+ ticks_t clock = ticks_to_ms(timer_clock_unlocked());
+
+ /* Display uptime (in ticks) */
+ text_xprintf(&lcd_bitmap, 2, 0, TEXT_FILL | TEXT_CENTER,
+ "%lu", clock / 1000);
+ rit128x96_blitBitmap(bm);
+ timer_delay(5);
+ if (kbd_peek() & KEY_MASK)
+ break;