From bd5152c928a4a0809eaa340e0f8ae788a949daea Mon Sep 17 00:00:00 2001
From: Damien George <damien@micropython.org>
Date: Thu, 9 Jun 2022 12:20:42 +1000
Subject: [PATCH] stm32/mboot: Add board-configurable SysTick hook.

Signed-off-by: Damien George <damien@micropython.org>
---
 ports/stm32/mboot/main.c  | 4 ++--
 ports/stm32/mboot/mboot.h | 6 +++++-
 ports/stm32/mboot/ui.c    | 2 +-
 3 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/ports/stm32/mboot/main.c b/ports/stm32/mboot/main.c
index 8bd5e86fe7..734c6a3b7d 100644
--- a/ports/stm32/mboot/main.c
+++ b/ports/stm32/mboot/main.c
@@ -1518,9 +1518,9 @@ void SysTick_Handler(void) {
     // work properly.
     SysTick->CTRL;
 
-    // Update the LED0 state from here to ensure it's consistent regardless of
+    // Run any board-specific code that needs to be done regardless of
     // other processing going on in interrupts or main.
-    led0_update();
+    MBOOT_BOARD_SYSTICK();
 }
 
 #if defined(MBOOT_I2C_SCL)
diff --git a/ports/stm32/mboot/mboot.h b/ports/stm32/mboot/mboot.h
index 9f47811537..208a80d57d 100644
--- a/ports/stm32/mboot/mboot.h
+++ b/ports/stm32/mboot/mboot.h
@@ -54,6 +54,10 @@
 #define MBOOT_BOARD_STATE_CHANGE(state, arg) mboot_state_change_default((state), (arg))
 #endif
 
+#ifndef MBOOT_BOARD_SYSTICK
+#define MBOOT_BOARD_SYSTICK() mboot_ui_systick()
+#endif
+
 #ifndef MBOOT_ADDRESS_SPACE_64BIT
 #define MBOOT_ADDRESS_SPACE_64BIT (0)
 #endif
@@ -148,7 +152,7 @@ extern uint8_t _estack[ELEM_DATA_SIZE];
 
 void systick_init(void);
 void led_init(void);
-void led0_update(void);
+void mboot_ui_systick(void);
 void SystemClock_Config(void);
 
 uint32_t get_le32(const uint8_t *b);
diff --git a/ports/stm32/mboot/ui.c b/ports/stm32/mboot/ui.c
index db1bcc8b78..9924ecd0ba 100644
--- a/ports/stm32/mboot/ui.c
+++ b/ports/stm32/mboot/ui.c
@@ -122,7 +122,7 @@ void led0_state(led0_state_t state) {
     }
 }
 
-void led0_update(void) {
+void mboot_ui_systick(void) {
     if (led0_cur_state != LED0_STATE_OFF && systick_ms - led0_ms_interval > 50) {
         uint8_t rate = (led0_cur_state >> 2) & 0x1f;
         led0_ms_interval += 50;