qmk-firmware/tmk_core/common/bootmagic_lite.c

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#include "quantum.h"
bool is_keyboard_left(void);
/** \brief Reset eeprom
*
* ...just incase someone wants to only change the eeprom behaviour
*/
__attribute__((weak)) void bootmagic_lite_reset_eeprom(void) {
#if defined(VIA_ENABLE)
via_eeprom_reset();
#else
eeconfig_disable();
#endif
}
/** \brief The lite version of TMK's bootmagic based on Wilba.
*
* 100% less potential for accidentally making the keyboard do stupid things.
*/
__attribute__((weak)) void bootmagic_lite(void) {
// We need multiple scans because debouncing can't be turned off.
matrix_scan();
#if defined(DEBOUNCE) && DEBOUNCE > 0
wait_ms(DEBOUNCE * 2);
#else
wait_ms(30);
#endif
matrix_scan();
// If the configured key (commonly Esc) is held down on power up,
// reset the EEPROM valid state and jump to bootloader.
// This isn't very generalized, but we need something that doesn't
// rely on user's keymaps in firmware or EEPROM.
uint8_t row = BOOTMAGIC_LITE_ROW;
uint8_t col = BOOTMAGIC_LITE_COLUMN;
#if defined(SPLIT_KEYBOARD) && defined(BOOTMAGIC_LITE_ROW_RIGHT) && defined(BOOTMAGIC_LITE_COLUMN_RIGHT)
if (!is_keyboard_left()) {
row = BOOTMAGIC_LITE_ROW_RIGHT;
col = BOOTMAGIC_LITE_COLUMN_RIGHT;
}
#endif
if (matrix_get_row(row) & (1 << col)) {
bootmagic_lite_reset_eeprom();
// Jump to bootloader.
bootloader_jump();
}
}