Keyboard driver for Radtel RT-890

meson.build

@@ -450,9 +450,9 @@ mod17_def += openrtx_def + stm32f405_def + miosix_cm4f_def
 
 rt890_src = ['platform/targets/RT-890/platform.c',
              'platform/drivers/display/ST7735S_RT890.c',
+             'platform/drivers/keyboard/keyboard_RT890.c',
              'platform/drivers/stubs/audio_stub.c',
              'platform/drivers/stubs/cps_io_stub.c',
-             'platform/drivers/stubs/keyboard_stub.c',
              'platform/drivers/stubs/nvmem_stub.c',
              'platform/drivers/stubs/radio_stub.c']
 

platform/drivers/keyboard/keyboard_RT890.c

@@ -0,0 +1,104 @@
+/***************************************************************************
+ *   Copyright (C) 2024 by Federico Amedeo Izzo IU2NUO,                    *
+ *                         Niccolò Izzo IU2KIN                             *
+ *                         Frederik Saraci IU2NRO                          *
+ *                         Silvano Seva IU2KWO                             *
+ *                         Dual Tachyon                                    *
+ *                                                                         *
+ *   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 3 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 <peripherals/gpio.h>
+#include <interfaces/delays.h>
+#include <interfaces/keyboard.h>
+#include "hwconfig.h"
+
+
+void kbd_init()
+{
+    /* Set the two column lines as outputs */
+    gpio_setMode(KBD_COL0, OUTPUT);
+    gpio_setMode(KBD_COL1, OUTPUT);
+    gpio_setMode(KBD_COL2, OUTPUT);
+    gpio_setMode(KBD_COL3, OUTPUT);
+
+    gpio_setMode(KBD_ROW0, INPUT_PULL_UP);
+    gpio_setMode(KBD_ROW1, INPUT_PULL_UP);
+    gpio_setMode(KBD_ROW2, INPUT_PULL_UP);
+    gpio_setMode(KBD_ROW3, INPUT_PULL_UP);
+    gpio_setMode(SKB_1,    INPUT_PULL_UP);
+
+    gpio_setPin(KBD_COL0);
+    gpio_setPin(KBD_COL1);
+    gpio_setPin(KBD_COL2);
+    gpio_setPin(KBD_COL3);
+}
+
+void kbd_terminate()
+{
+    /* Back to default state */
+    gpio_clearPin(KBD_COL0);
+    gpio_clearPin(KBD_COL1);
+    gpio_clearPin(KBD_COL2);
+    gpio_clearPin(KBD_COL3);
+    gpio_setMode(KBD_COL0, INPUT);
+    gpio_setMode(KBD_COL1, INPUT);
+    gpio_setMode(KBD_COL2, INPUT);
+    gpio_setMode(KBD_COL3, INPUT);
+}
+
+keyboard_t kbd_getKeys()
+{
+    keyboard_t keys = 0;
+
+    if(!gpio_readPin(SKB_1)) keys |= KEY_MONI;
+
+    gpio_setPin(KBD_COL3);
+    gpio_clearPin(KBD_COL0);
+
+    delayUs(10);
+    if(!gpio_readPin(KBD_ROW0)) keys |= KEY_ENTER;
+    if(!gpio_readPin(KBD_ROW1)) keys |= KEY_UP;
+    if(!gpio_readPin(KBD_ROW2)) keys |= KEY_DOWN;
+    if(!gpio_readPin(KBD_ROW3)) keys |= KEY_ESC;
+
+    gpio_clearPin(KBD_COL1);
+    gpio_setPin(KBD_COL0);
+
+    delayUs(10);
+    if(!gpio_readPin(KBD_ROW0)) keys |= KEY_1;
+    if(!gpio_readPin(KBD_ROW1)) keys |= KEY_2;
+    if(!gpio_readPin(KBD_ROW2)) keys |= KEY_3;
+    if(!gpio_readPin(KBD_ROW3)) keys |= KEY_STAR;
+
+    gpio_clearPin(KBD_COL2);
+    gpio_setPin(KBD_COL1);
+
+    delayUs(10);
+    if(!gpio_readPin(KBD_ROW0)) keys |= KEY_4;
+    if(!gpio_readPin(KBD_ROW1)) keys |= KEY_5;
+    if(!gpio_readPin(KBD_ROW2)) keys |= KEY_6;
+    if(!gpio_readPin(KBD_ROW3)) keys |= KEY_0;
+
+    gpio_clearPin(KBD_COL3);
+    gpio_setPin(KBD_COL2);
+
+    delayUs(10);
+    if(!gpio_readPin(KBD_ROW0)) keys |= KEY_7;
+    if(!gpio_readPin(KBD_ROW1)) keys |= KEY_8;
+    if(!gpio_readPin(KBD_ROW2)) keys |= KEY_9;
+    if(!gpio_readPin(KBD_ROW3)) keys |= KEY_HASH;
+
+    return keys;
+}