diff --git a/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/mpconfigboard.h b/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/mpconfigboard.h
index ed19f60e9e..aa1e28ab9d 100644
--- a/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/mpconfigboard.h
+++ b/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/mpconfigboard.h
@@ -98,9 +98,10 @@ void PORTENTA_C33_board_enter_bootloader(void);
 // WiFi config.
 #define MICROPY_HW_WIFI_SPI_ID          (1)
 #define MICROPY_HW_WIFI_SPI_CS          (pin_P104)
-#define MICROPY_HW_WIFI_SPI_BAUDRATE    (30 * 1000 * 1000)
+#define MICROPY_HW_WIFI_SPI_BAUDRATE    (25 * 1000 * 1000)
 #define MICROPY_HW_WIFI_DATAREADY       (pin_P803)
 #define MICROPY_HW_WIFI_HANDSHAKE       (pin_P806)
+#define MICROPY_HW_WIFI_IRQ_PIN         (MICROPY_HW_WIFI_DATAREADY)
 
 // ESP hosted control pins
 #define MICROPY_HW_ESP_HOSTED_RESET     (pin_P804)
diff --git a/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/ra_gen/common_data.c b/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/ra_gen/common_data.c
index 50a3f6046b..edc031ea90 100644
--- a/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/ra_gen/common_data.c
+++ b/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/ra_gen/common_data.c
@@ -1,5 +1,29 @@
 /* generated common source file - do not edit */
 #include "common_data.h"
+icu_instance_ctrl_t g_external_irq1_ctrl;
+const external_irq_cfg_t g_external_irq1_cfg =
+{ .channel = 2,
+  .trigger = EXTERNAL_IRQ_TRIG_RISING,
+  .filter_enable = false,
+  .pclk_div = EXTERNAL_IRQ_PCLK_DIV_BY_64,
+  .p_callback = NULL,
+  /** If NULL then do not add & */
+  #if defined(NULL)
+  .p_context = NULL,
+  #else
+  .p_context = &NULL,
+  #endif
+  .p_extend = NULL,
+  .ipl = (12),
+  #if defined(VECTOR_NUMBER_ICU_IRQ2)
+  .irq = VECTOR_NUMBER_ICU_IRQ2,
+  #else
+  .irq = FSP_INVALID_VECTOR,
+  #endif
+};
+/* Instance structure to use this module. */
+const external_irq_instance_t g_external_irq1 =
+{ .p_ctrl = &g_external_irq1_ctrl, .p_cfg = &g_external_irq1_cfg, .p_api = &g_external_irq_on_icu };
 sce_instance_ctrl_t sce_ctrl;
 const sce_cfg_t sce_cfg =
 { .lifecycle = SCE_SSD };
diff --git a/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/ra_gen/common_data.h b/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/ra_gen/common_data.h
index 0f5a143ff6..3573218160 100644
--- a/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/ra_gen/common_data.h
+++ b/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/ra_gen/common_data.h
@@ -3,12 +3,22 @@
 #define COMMON_DATA_H_
 #include <stdint.h>
 #include "bsp_api.h"
-#include "r_sce.h"
 #include "r_icu.h"
 #include "r_external_irq_api.h"
+#include "r_sce.h"
 #include "r_ioport.h"
 #include "bsp_pin_cfg.h"
 FSP_HEADER
+/** External IRQ on ICU Instance. */
+extern const external_irq_instance_t g_external_irq1;
+
+/** Access the ICU instance using these structures when calling API functions directly (::p_api is not used). */
+extern icu_instance_ctrl_t g_external_irq1_ctrl;
+extern const external_irq_cfg_t g_external_irq1_cfg;
+
+#ifndef NULL
+void NULL(external_irq_callback_args_t *p_args);
+#endif
 extern sce_instance_ctrl_t sce_ctrl;
 extern const sce_cfg_t sce_cfg;
 /** External IRQ on ICU Instance. */
diff --git a/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/ra_gen/pin_data.c b/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/ra_gen/pin_data.c
index 895f662f27..ac0f7b5ddf 100644
--- a/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/ra_gen/pin_data.c
+++ b/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/ra_gen/pin_data.c
@@ -34,6 +34,8 @@ const ioport_pin_cfg_t g_bsp_pin_cfg_data[] =
         | (uint32_t)IOPORT_PERIPHERAL_SCI1_3_5_7_9) },
     { .pin = BSP_IO_PORT_06_PIN_07, .pin_cfg = ((uint32_t)IOPORT_CFG_PERIPHERAL_PIN
         | (uint32_t)IOPORT_PERIPHERAL_SCI0_2_4_6_8) },
+    { .pin = BSP_IO_PORT_08_PIN_03, .pin_cfg = ((uint32_t)IOPORT_CFG_IRQ_ENABLE
+        | (uint32_t)IOPORT_CFG_PORT_DIRECTION_INPUT) },
     { .pin = BSP_IO_PORT_10_PIN_00, .pin_cfg = ((uint32_t)IOPORT_CFG_PERIPHERAL_PIN
         | (uint32_t)IOPORT_PERIPHERAL_SCI0_2_4_6_8) },
 };
diff --git a/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/ra_gen/vector_data.c b/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/ra_gen/vector_data.c
index ea8b0511ba..cb4da4cf34 100644
--- a/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/ra_gen/vector_data.c
+++ b/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/ra_gen/vector_data.c
@@ -33,6 +33,7 @@ BSP_DONT_REMOVE const fsp_vector_t g_vector_table[BSP_ICU_VECTOR_MAX_ENTRIES] BS
     [26] = spi_txi_isr,         /* SPI1 TXI (Transmit buffer empty) */
     [27] = spi_tei_isr,         /* SPI1 TEI (Transmission complete event) */
     [28] = spi_eri_isr,         /* SPI1 ERI (Error) */
+    [29] = r_icu_isr,         /* ICU IRQ2 (External pin interrupt 2) */
 };
 const bsp_interrupt_event_t g_interrupt_event_link_select[BSP_ICU_VECTOR_MAX_ENTRIES] =
 {
@@ -65,5 +66,6 @@ const bsp_interrupt_event_t g_interrupt_event_link_select[BSP_ICU_VECTOR_MAX_ENT
     [26] = BSP_PRV_IELS_ENUM(EVENT_SPI1_TXI),         /* SPI1 TXI (Transmit buffer empty) */
     [27] = BSP_PRV_IELS_ENUM(EVENT_SPI1_TEI),         /* SPI1 TEI (Transmission complete event) */
     [28] = BSP_PRV_IELS_ENUM(EVENT_SPI1_ERI),         /* SPI1 ERI (Error) */
+    [29] = BSP_PRV_IELS_ENUM(EVENT_ICU_IRQ2),         /* ICU IRQ2 (External pin interrupt 2) */
 };
 #endif
diff --git a/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/ra_gen/vector_data.h b/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/ra_gen/vector_data.h
index 2342dbbab1..c5ccb9e3cf 100644
--- a/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/ra_gen/vector_data.h
+++ b/ports/renesas-ra/boards/ARDUINO_PORTENTA_C33/ra_gen/vector_data.h
@@ -6,7 +6,7 @@ extern "C" {
 #endif
 /* Number of interrupts allocated */
 #ifndef VECTOR_DATA_IRQ_COUNT
-#define VECTOR_DATA_IRQ_COUNT    (29)
+#define VECTOR_DATA_IRQ_COUNT    (30)
 #endif
 /* ISR prototypes */
 void sci_uart_rxi_isr(void);
@@ -92,6 +92,8 @@ void spi_eri_isr(void);
 #define SPI1_TEI_IRQn          ((IRQn_Type)27)  /* SPI1 TEI (Transmission complete event) */
 #define VECTOR_NUMBER_SPI1_ERI ((IRQn_Type)28)  /* SPI1 ERI (Error) */
 #define SPI1_ERI_IRQn          ((IRQn_Type)28)  /* SPI1 ERI (Error) */
+#define VECTOR_NUMBER_ICU_IRQ2 ((IRQn_Type)29)  /* ICU IRQ2 (External pin interrupt 2) */
+#define ICU_IRQ2_IRQn          ((IRQn_Type)29)  /* ICU IRQ2 (External pin interrupt 2) */
 #ifdef __cplusplus
 }
 #endif