[Keyboard] Added support for ErgoDox with STM32 Microcontroller (#5398)

* Began Work On STM32 Ergodox
 Changes to be committed:
	new file:   keyboards/ergodox_stm32/config.h
	new file:   keyboards/ergodox_stm32/rules.mk

* test

* Now it compile. Not linking thou

* Screw this Linker. It links now!

* Blinkly Keyboard

* bootloader test code

* Working on matrix / i2c stuff

* Progress (LED Blink)

* Progress on MCP_23017 Status Flag

* [WIP]

* update

* Works! Remeber to change back the bootloader address when the new bootloadrer is ready.

* Time to go debug the i2c

* Finally, it now works with PCB Rev 1.0.2

* updated for rev.2 pcb

* minor compilation fix

* Why when debugger is enabled then everything works.

* Remeber to call init functions.

* Update arm i2c driver to support STM32F103 series device.

* fix include once header. Replaced with #pragma once.

* complication test

1 files changed, 56 insertions, 0 deletions

diff --git a/keyboards/ergodox_stm32/keymaps/default/keymap.c b/keyboards/ergodox_stm32/keymaps/default/keymap.c
new file mode 100644
index 0000000000..d3d4b57228
--- /dev/null
+++ b/keyboards/ergodox_stm32/keymaps/default/keymap.c
@@ -0,0 +1,56 @@
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  [0] = LAYOUT_ergodox(KC_GRAVE,KC_1,KC_2,KC_3,KC_4,KC_5,KC_MINUS,KC_TAB,KC_Q,KC_W,KC_E,KC_R,KC_T,KC_LPRN,KC_ESCAPE,KC_A,KC_S,KC_D,KC_F,KC_G,KC_LSHIFT,KC_Z,KC_X,KC_C,KC_V,KC_B,KC_RPRN,KC_LCTRL,KC_LGUI,KC_LALT,KC_LGUI,KC_LALT,KC_INSERT,MO(1),KC_HOME,KC_SPACE,KC_DELETE,KC_END,KC_EQUAL,KC_6,KC_7,KC_8,KC_9,KC_0,KC_BSPACE,KC_LBRACKET,KC_Y,KC_U,KC_I,KC_O,KC_P,KC_BSLASH,KC_H,KC_J,KC_K,KC_L,KC_SCOLON,KC_QUOTE,KC_RBRACKET,KC_N,KC_M,KC_COMMA,KC_DOT,KC_SLASH,KC_RSHIFT,KC_LEFT,KC_DOWN,KC_UP,KC_RIGHT,KC_RCTRL,MO(1),TG(2),KC_PGUP,KC_PGDOWN,KC_BSPACE,KC_ENTER),
+
+  [1] = LAYOUT_ergodox(KC_TILD,KC_F1,KC_F2,KC_F3,KC_F4,KC_F5,KC_F6,KC_GRAVE,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_CAPSLOCK,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_MEDIA_PLAY_PAUSE,KC_TRANSPARENT,KC_TRANSPARENT,KC_F7,KC_F8,KC_F9,KC_F10,KC_F11,KC_F12,KC_BSPACE,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,LCTL(LGUI(KC_Q)),KC_MEDIA_PREV_TRACK,KC_MEDIA_NEXT_TRACK,KC_AUDIO_VOL_DOWN,KC_AUDIO_VOL_UP),
+
+  [2] = LAYOUT_ergodox(KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_NUMLOCK,KC_KP_SLASH,KC_KP_ASTERISK,KC_KP_MINUS,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_KP_7,KC_KP_8,KC_KP_9,KC_KP_PLUS,KC_TRANSPARENT,KC_TRANSPARENT,KC_KP_4,KC_KP_5,KC_KP_6,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_KP_1,KC_KP_2,KC_KP_3,KC_ENTER,KC_TRANSPARENT,KC_KP_DOT,KC_KP_0,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT,KC_TRANSPARENT),
+
+};
+
+const uint16_t PROGMEM fn_actions[] = {
+  [1] = TT(1)
+};
+
+uint32_t layer_state_set_user(uint32_t state) {
+
+    uint8_t layer = biton32(state);
+
+    ergodox_led_all_off();
+    ergodox_board_led_1_off();
+    ergodox_board_led_2_off();
+    ergodox_board_led_3_off();
+    switch (layer) {
+      case 1:
+        ergodox_board_led_1_on();
+        break;
+      case 2:
+        ergodox_board_led_2_on();
+        break;
+      case 3:
+        ergodox_board_led_2_on();
+        break;
+      case 4:
+        ergodox_board_led_1_on();
+        ergodox_board_led_2_on();
+        break;
+      case 5:
+        ergodox_board_led_1_on();
+        ergodox_board_led_3_on();
+        break;
+      case 6:
+        ergodox_board_led_2_on();
+        ergodox_board_led_3_on();
+        break;
+      case 7:
+        ergodox_board_led_1_on();
+        ergodox_board_led_2_on();
+        ergodox_board_led_3_on();
+        break;
+      default:
+        break;
+    }
+    return state;
+
+};