merge conditional read

quantum/quantum.c

@@ -949,8 +949,40 @@ void tap_random_base64(void) {
   }
 }
 
+__attribute__((weak))
+void bootmagic_lite(void) {
+  // The lite version of TMK's bootmagic based on Wilba.
+  // 100% less potential for accidentally making the
+  // keyboard do stupid things.
+
+  // We need multiple scans because debouncing can't be turned off.
+  matrix_scan();
+  #if defined(DEBOUNCING_DELAY) && DEBOUNCING_DELAY > 0
+    wait_ms(DEBOUNCING_DELAY * 2);
+  #elif defined(DEBOUNCE) && DEBOUNCE > 0
+    wait_ms(DEBOUNCE * 2);
+  #else
+    wait_ms(30);
+  #endif
+  matrix_scan();
+
+  // If the Esc and space bar are held down on power up,
+  // reset the EEPROM valid state and jump to bootloader.
+  // Assumes Esc is at [0,0].
+  // This isn't very generalized, but we need something that doesn't
+  // rely on user's keymaps in firmware or EEPROM.
+  if (matrix_get_row(BOOTMAGIC_LITE_ROW) & (1 << BOOTMAGIC_LITE_COLUMN)) {
+    eeconfig_disable();
+    // Jump to bootloader.
+    bootloader_jump();
+  }
+}
+
 void matrix_init_quantum() {
-  if (!eeconfig_is_enabled() && !eeconfig_is_disabled()) {
+  #ifdef BOOTMAGIC_LITE
+    bootmagic_lite();
+  #endif
+  if (!eeconfig_is_enabled()) {
     eeconfig_init();
   }
   #ifdef BACKLIGHT_ENABLE

quantum/quantum.h

@@ -226,6 +226,15 @@ bool process_action_kb(keyrecord_t *record);
 bool process_record_kb(uint16_t keycode, keyrecord_t *record);
 bool process_record_user(uint16_t keycode, keyrecord_t *record);
 
+#ifndef BOOTMAGIC_LITE_COLUMN
+  #define BOOTMAGIC_LITE_COLUMN 0
+#endif
+#ifndef BOOTMAGIC_LITE_ROW
+  #define BOOTMAGIC_LITE_ROW 0
+#endif
+
+void bootmagic_lite(void);
+
 void reset_keyboard(void);
 
 void startup_user(void);

quantum/split_common/split_util.c

@@ -92,9 +92,14 @@ void split_keyboard_setup(void) {
    sei();
 }
 
+void disable_JTAG(void);
 void keyboard_slave_loop(void) {
+   // Disable JTAG since we skip calling keyboard_init() on the slave side
+   // Future fix will possible call keyboard_init() on the slave to remove this need
+   disable_JTAG();
+
    matrix_init();
-   
+
    //Init RGB
    #ifdef RGBLIGHT_ENABLE
       rgblight_init();
@@ -103,7 +108,7 @@ void keyboard_slave_loop(void) {
    while (1) {
     // Matrix Slave Scan
     matrix_slave_scan();
-    
+
     // Read Backlight Info
     #ifdef BACKLIGHT_ENABLE
         #ifdef USE_I2C
@@ -122,14 +127,14 @@ void keyboard_slave_loop(void) {
                 // Disable interupts (RGB data is big)
                 cli();
                 // Create new DWORD for RGB data
-                uint32_t dword; 
-                
+                uint32_t dword;
+
                 // Fill the new DWORD with the data that was sent over
                 uint8_t *dword_dat = (uint8_t *)(&dword);
                 for (int i = 0; i < 4; i++) {
                     dword_dat[i] = i2c_slave_buffer[I2C_RGB_START+i];
                 }
-                
+
                 // Update the RGB now with the new data and set RGB_DIRTY to false
                 rgblight_update_dword(dword);
                 RGB_DIRTY = false;
@@ -152,3 +157,13 @@ void matrix_setup(void) {
         keyboard_slave_loop();
     }
 }
+
+// Temporary code to disable JTAG on the slave board
+void disable_JTAG(void) {
+    /* Copied from tmk_core/common/keybaord.c */
+    // To use PORTF disable JTAG with writing JTD bit twice within four cycles.
+    #if  (defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__) || defined(__AVR_ATmega32U4__))
+      MCUCR |= _BV(JTD);
+      MCUCR |= _BV(JTD);
+    #endif
+}

quantum/template/avr/config.h

@@ -222,3 +222,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #endif
 */
 
+/* Bootmagic Lite key configuration */
+// #define BOOTMAGIC_LITE_ROW 0
+// #define BOOTMAGIC_LITE_COLUMN 0

quantum/template/ps2avrgb/config.h

@@ -44,3 +44,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 /* key combination for command */
 #define IS_COMMAND() (keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)))
+
+/* Bootmagic Lite key configuration */
+// #define BOOTMAGIC_LITE_ROW 0
+// #define BOOTMAGIC_LITE_COLUMN 0