From 8745c2226896daee95695931d2ed0bdb806ba818 Mon Sep 17 00:00:00 2001
From: Imbus <>
Date: Tue, 18 Feb 2025 00:34:48 +0100
Subject: [PATCH] Use flash key defines/constants when writing to flash

---
 rand.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/rand.c b/rand.c
index 062a64a..d2e2c28 100644
--- a/rand.c
+++ b/rand.c
@@ -1,5 +1,6 @@
 #include "rand.h"
 #include "ch32fun.h"
+#include "ch32v003hw.h"
 #include <stdint.h>
 
 #define BUILD_SEED                                                             \
@@ -51,11 +52,11 @@ void rand_reseed() {
 // See:
 // https://github.com/cnlohr/ch32v003fun/blob/2ac62072272f2ccd2122e688a9e0566de3976a94/examples/flashtest/flashtest.c
 void rand_save_to_flash() {
-    FLASH->KEYR = 0x45670123; // Unlock flash
-    FLASH->KEYR = 0xCDEF89AB;
+    FLASH->KEYR = FLASH_KEY1; // Unlock flash
+    FLASH->KEYR = FLASH_KEY2;
 
-    FLASH->MODEKEYR = 0x45670123; // Unlock programming mode
-    FLASH->MODEKEYR = 0xCDEF89AB;
+    FLASH->MODEKEYR = FLASH_KEY1; // Unlock programming mode
+    FLASH->MODEKEYR = FLASH_KEY2;
 
     // Erase the flash page
     FLASH->CTLR = CR_PAGE_ER;