7 files changed, 12 insertions, 17 deletions
diff --git a/ports/renesas-ra/extint.c b/ports/renesas-ra/extint.c
index 05e99eb65..19caa7a3b 100644
--- a/ports/renesas-ra/extint.c
+++ b/ports/renesas-ra/extint.c
@@ -399,3 +399,5 @@ void extint_init0(void) {
         MP_STATE_PORT(pyb_extint_callback)[i] = mp_const_none;
     }
 }
+
+MP_REGISTER_ROOT_POINTER(mp_obj_t pyb_extint_callback[PYB_EXTI_NUM_VECTORS]);
diff --git a/ports/renesas-ra/machine_uart.c b/ports/renesas-ra/machine_uart.c
index d71562f20..4b4aa3396 100644
--- a/ports/renesas-ra/machine_uart.c
+++ b/ports/renesas-ra/machine_uart.c
@@ -581,3 +581,5 @@ const mp_obj_type_t machine_uart_type = {
     .protocol = &uart_stream_p,
     .locals_dict = (mp_obj_dict_t *)&machine_uart_locals_dict,
 };
+
+MP_REGISTER_ROOT_POINTER(struct _machine_uart_obj_t *machine_uart_obj_all[MICROPY_HW_MAX_UART + MICROPY_HW_MAX_LPUART]);
diff --git a/ports/renesas-ra/main.c b/ports/renesas-ra/main.c
index 6f4584b68..78af1a963 100644
--- a/ports/renesas-ra/main.c
+++ b/ports/renesas-ra/main.c
@@ -397,3 +397,5 @@ soft_reset_exit:
 
     goto soft_reset;
 }
+
+MP_REGISTER_ROOT_POINTER(mp_obj_t pyb_config_main);
diff --git a/ports/renesas-ra/mpconfigport.h b/ports/renesas-ra/mpconfigport.h
index 9a8c02559..0f1d59303 100644
--- a/ports/renesas-ra/mpconfigport.h
+++ b/ports/renesas-ra/mpconfigport.h
@@ -168,23 +168,6 @@
 #endif
 
 #define MICROPY_PORT_ROOT_POINTERS \
-    mp_obj_t pyb_config_main; \
-    \
-    mp_obj_t pyb_switch_callback; \
-    \
-    mp_obj_t pyb_extint_callback[PYB_EXTI_NUM_VECTORS]; \
-    \
-    /* pointers to all Timer objects (if they have been created) */ \
-    struct _pyb_timer_obj_t *pyb_timer_obj_all[MICROPY_HW_MAX_TIMER]; \
-    \
-    /* stdio is repeated on this UART object if it's not null */ \
-    struct _machine_uart_obj_t *pyb_stdio_uart; \
-    \
-    /* pointers to all UART objects (if they have been created) */ \
-    struct _machine_uart_obj_t *machine_uart_obj_all[MICROPY_HW_MAX_UART + MICROPY_HW_MAX_LPUART]; \
-    \
-    /* root pointers for sub-systems */ \
-    \
     /* root pointers defined by a board */ \
     MICROPY_BOARD_ROOT_POINTERS \
 
diff --git a/ports/renesas-ra/mphalport.c b/ports/renesas-ra/mphalport.c
index 6a416f431..6e6a83aa2 100644
--- a/ports/renesas-ra/mphalport.c
+++ b/ports/renesas-ra/mphalport.c
@@ -118,3 +118,5 @@ void mp_hal_get_mac_ascii(int idx, size_t chr_off, size_t chr_len, char *dest) {
         *dest++ = hexchr[mac[chr_off >> 1] >> (4 * (1 - (chr_off & 1))) & 0xf];
     }
 }
+
+MP_REGISTER_ROOT_POINTER(struct _machine_uart_obj_t *pyb_stdio_uart);
diff --git a/ports/renesas-ra/timer.c b/ports/renesas-ra/timer.c
index 93b378ac3..1ae936525 100644
--- a/ports/renesas-ra/timer.c
+++ b/ports/renesas-ra/timer.c
@@ -567,3 +567,5 @@ void timer_irq_handler(void *param) {
         // }
     }
 }
+
+MP_REGISTER_ROOT_POINTER(struct _pyb_timer_obj_t *pyb_timer_obj_all[MICROPY_HW_MAX_TIMER]);
diff --git a/ports/renesas-ra/usrsw.c b/ports/renesas-ra/usrsw.c
index b0e2396cd..5e11f48e6 100644
--- a/ports/renesas-ra/usrsw.c
+++ b/ports/renesas-ra/usrsw.c
@@ -144,4 +144,6 @@ const mp_obj_type_t pyb_switch_type = {
     .locals_dict = (mp_obj_dict_t *)&pyb_switch_locals_dict,
 };
 
+MP_REGISTER_ROOT_POINTER(mp_obj_t pyb_switch_callback);
+
 #endif // MICROPY_HW_HAS_SWITCH