ARM split - Add support for dfu-util EE_HANDS flashing (#6543)

* Initial stab at some fake dfu-util-split-left behaviour

* Apply suggestions from code review

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* Clang format fixes

* Fake eeprom init for both left and right hand

1 files changed, 10 insertions, 0 deletions

diff --git a/tmk_core/common/eeconfig.c b/tmk_core/common/eeconfig.c
index 933ac42bd..4cf4ca3ac 100644
--- a/tmk_core/common/eeconfig.c
+++ b/tmk_core/common/eeconfig.c
@@ -48,6 +48,16 @@ void eeconfig_init_quantum(void) {
     eeprom_update_dword(EECONFIG_RGB_MATRIX, 0);
     eeprom_update_byte(EECONFIG_RGB_MATRIX_SPEED, 0);
 
+    // TODO: Remove once ARM has a way to configure EECONFIG_HANDEDNESS
+    //        within the emulated eeprom via dfu-util or another tool
+#if defined INIT_EE_HANDS_LEFT
+    #pragma message "Faking EE_HANDS for left hand"
+    eeprom_update_byte(EECONFIG_HANDEDNESS, 1);
+#elif defined INIT_EE_HANDS_RIGHT
+    #pragma message "Faking EE_HANDS for right hand"
+    eeprom_update_byte(EECONFIG_HANDEDNESS, 0);
+#endif
+
     eeconfig_init_kb();
 }