From 0edf0e80c25145010ab570b9e9611cb01c8e40ef Mon Sep 17 00:00:00 2001
From: jedi <git@m.j3d1.de>
Date: Tue, 6 Jul 2021 22:55:38 +0200
Subject: [PATCH] add function to clear config in flash

---
 firmware/system.c | 12 +++++++++++-
 firmware/system.h |  2 ++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/firmware/system.c b/firmware/system.c
index 3de7ada..f4a9e2e 100644
--- a/firmware/system.c
+++ b/firmware/system.c
@@ -10,4 +10,14 @@
 #include <spiflash.h>
 
 #include <espressif/esp_common.h>
-#include <espressif/user_interface.h>
\ No newline at end of file
+#include <espressif/user_interface.h>
+
+void system_clear_config(){
+    vPortEnterCritical();
+    uint32_t num_sectors = 5 + DEFAULT_SYSPARAM_SECTORS;
+    uint32_t start = sdk_flashchip.chip_size - num_sectors * sdk_flashchip.sector_size;
+    for (uint32_t i = 0; i < num_sectors; i++) {
+        spiflash_erase_sector(start + i * sdk_flashchip.sector_size);
+    }
+    sdk_system_restart();
+}
\ No newline at end of file
diff --git a/firmware/system.h b/firmware/system.h
index 42ec187..1046f49 100644
--- a/firmware/system.h
+++ b/firmware/system.h
@@ -9,6 +9,8 @@
 extern "C" {
 #endif
 
+void system_clear_config();
+
 #ifdef __cplusplus
 }
 #endif