[Keyboard] Acheron Athena support (#16818)

Co-authored-by: Drashna Jaelre <drashna@live.com>

1 files changed, 45 insertions, 0 deletions

diff --git a/keyboards/acheron/athena/alpha/alpha.c b/keyboards/acheron/athena/alpha/alpha.c
new file mode 100644
index 0000000000..645e0ea635
--- /dev/null
+++ b/keyboards/acheron/athena/alpha/alpha.c
@@ -0,0 +1,45 @@
+/* Copyright 2020 Gondolindrim
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "alpha.h"
+
+
+void board_init(void) {
+    setPinInput(B6);
+    setPinInput(B7);
+}
+
+void keyboard_post_init_kb(void){
+ // Defining the backlight pin (A6) as an floating (no pullup or pulldown resistor) opendrain output pin
+    palSetLineMode(BACKLIGHT_PIN, PAL_MODE_ALTERNATE(BACKLIGHT_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN | PAL_STM32_OSPEED_HIGHEST | PAL_STM32_PUPDR_FLOATING);
+}
+
+#define LED_PIN_ON_STATE 1
+void led_init_ports(void) {
+    palSetLineMode(LED_CAPS_LOCK_PIN, PAL_MODE_OUTPUT_OPENDRAIN | PAL_STM32_PUPDR_FLOATING);
+}
+
+bool led_update_kb(led_t led_state) {
+    bool res = led_update_user(led_state);
+    #ifdef CAPSLOCK_INDICATOR
+    if(res) {
+        writePin(LED_CAPS_LOCK_PIN, !led_state.caps_lock);
+    }
+    #else
+    writePin(LED_CAPS_LOCK_PIN, 0);
+    #endif
+    return res;
+}