pkg/u8g2: migrate to ztimer

pkg/u8g2/Kconfig

@@ -10,7 +10,8 @@ config PACKAGE_U8G2
     depends on TEST_KCONFIG
     depends on HAS_PERIPH_GPIO
     select MODULE_PERIPH_GPIO
-    select MODULE_XTIMER
+    select MODULE_ZTIMER
+    select MODULE_ZTIMER_USEC
     select MODULE_U8G2_RIOT
     select MODULE_U8G2_CSRC
 

pkg/u8g2/Makefile.dep

@@ -1,4 +1,5 @@
-USEMODULE += xtimer
+USEMODULE += ztimer
+USEMODULE += ztimer_usec
 
 FEATURES_REQUIRED += periph_gpio
 

pkg/u8g2/contrib/u8x8_riotos.c

@@ -24,7 +24,7 @@
 
 #include "u8x8_riotos.h"
 
-#include "xtimer.h"
+#include "ztimer.h"
 
 #ifdef MODULE_PERIPH_SPI
 #include "periph/spi.h"
@@ -97,14 +97,14 @@ uint8_t u8x8_gpio_and_delay_riotos(u8x8_t *u8g2, uint8_t msg, uint8_t arg_int, v
             _enable_pins(u8x8_riot_ptr);
             break;
         case U8X8_MSG_DELAY_MILLI:
-            xtimer_usleep(arg_int * 1000);
+            ztimer_sleep(ZTIMER_USEC, arg_int * 1000);
             break;
         case U8X8_MSG_DELAY_10MICRO:
-            xtimer_usleep(arg_int * 10);
+            ztimer_sleep(ZTIMER_USEC, arg_int * 10);
             break;
         case U8X8_MSG_DELAY_100NANO:
              /* not used in upstream so approximating to 1us should be fine */
-            xtimer_usleep(1);
+            ztimer_sleep(ZTIMER_USEC, 1);
             break;
         case U8X8_MSG_GPIO_CS:
             if (u8x8_riot_ptr != NULL && gpio_is_valid(u8x8_riot_ptr->pin_cs)) {

tests/pkg_u8g2/Makefile

@@ -1,6 +1,7 @@
 include ../Makefile.tests_common
 
-USEMODULE += xtimer
+USEMODULE += ztimer
+USEMODULE += ztimer_usec
 
 USEPKG += u8g2
 

tests/pkg_u8g2/main.c

@@ -70,7 +70,8 @@
 #include "periph/i2c.h"
 #endif
 
-#include "xtimer.h"
+#include "timex.h"
+#include "ztimer.h"
 
 #include "u8g2.h"
 #include "u8x8_riotos.h"
@@ -200,7 +201,7 @@ int main(void)
         screen = (screen + 1) % 3;
 
         /* sleep a little */
-        xtimer_sleep(1);
+        ztimer_sleep(ZTIMER_USEC, US_PER_SEC);
     }
 
     return 0;