Add RP2040 SCRAMBLE v2 (#19489)

6 files changed, 213 insertions, 0 deletions

diff --git a/keyboards/nullbitsco/scramble/v2/config.h b/keyboards/nullbitsco/scramble/v2/config.h
new file mode 100644
index 0000000000..a2eb9712f9
--- /dev/null
+++ b/keyboards/nullbitsco/scramble/v2/config.h
@@ -0,0 +1,42 @@
+/*
+Copyright 2021 Jay Greco
+
+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/>.
+*/
+
+/* NOTE: This config file is specific to RP2040 builds. */
+
+#pragma once
+
+#include "config_common.h"
+
+/* key matrix size */
+#define MATRIX_ROWS 2
+#define MATRIX_COLS 3
+
+#define DIRECT_PINS {{GP6,GP8,GP10}, {GP29,GP28,GP22}}
+
+/* Set 0 if debouncing isn't needed */
+#define DEBOUNCE 10
+
+/* Optional encoder pins */
+#define ENCODERS_PAD_A { GP24 }
+#define ENCODERS_PAD_B { GP25 }
+#define TAP_CODE_DELAY 10
+
+/* RP2040-specific defines*/
+#define RP2040_FLASH_GENERIC_03H
+#define I2C1_SDA_PIN GP26
+#define I2C1_SCL_PIN GP27
+#define I2C_DRIVER I2CD2
diff --git a/keyboards/nullbitsco/scramble/v2/halconf.h b/keyboards/nullbitsco/scramble/v2/halconf.h
new file mode 100644
index 0000000000..2cc40eaa91
--- /dev/null
+++ b/keyboards/nullbitsco/scramble/v2/halconf.h
@@ -0,0 +1,9 @@
+// Copyright 2022 Jay Greco
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#define HAL_USE_I2C TRUE
+#define HAL_USE_PWM TRUE
+
+#include_next <halconf.h>
diff --git a/keyboards/nullbitsco/scramble/v2/mcuconf.h b/keyboards/nullbitsco/scramble/v2/mcuconf.h
new file mode 100644
index 0000000000..9646c6b702
--- /dev/null
+++ b/keyboards/nullbitsco/scramble/v2/mcuconf.h
@@ -0,0 +1,14 @@
+// Copyright 2022 Jay Greco
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include_next <mcuconf.h>
+
+#undef RP_I2C_USE_I2C1
+#define RP_I2C_USE_I2C1 TRUE
+
+#undef RP_PWM_USE_PWM1
+#define RP_PWM_USE_PWM1 TRUE
+#undef RP_PWM_USE_PWM2
+#define RP_PWM_USE_PWM2 TRUE
diff --git a/keyboards/nullbitsco/scramble/v2/rules.mk b/keyboards/nullbitsco/scramble/v2/rules.mk
new file mode 100644
index 0000000000..f93963285b
--- /dev/null
+++ b/keyboards/nullbitsco/scramble/v2/rules.mk
@@ -0,0 +1,21 @@
+# NOTE: This file is is specific to RP2040 builds.
+
+# MCU name
+MCU = RP2040
+
+# Bootloader selection
+BOOTLOADER = rp2040
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = no       # Enable Bootmagic Lite
+MOUSEKEY_ENABLE = yes       # Mouse keys
+EXTRAKEY_ENABLE = yes       # Audio control and System control
+CONSOLE_ENABLE = no         # Console for debug
+COMMAND_ENABLE = no         # Commands for debug and configuration
+NKRO_ENABLE = no            # Enable N-Key Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+AUDIO_ENABLE = no           # Audio output
+ENCODER_ENABLE = yes        # Use rotary encoder
diff --git a/keyboards/nullbitsco/scramble/v2/v2.c b/keyboards/nullbitsco/scramble/v2/v2.c
new file mode 100644
index 0000000000..9b0a088855
--- /dev/null
+++ b/keyboards/nullbitsco/scramble/v2/v2.c
@@ -0,0 +1,84 @@
+// Copyright 2022 Jay Greco
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "v2.h"
+
+// SCRAMBLE PWM LED config
+pwm_led_t scramble_rgb = {
+    {GP18, GP19, GP20},
+    {&PWMD1, &PWMD1, &PWMD2},
+    {0, 1, 0},
+    PWM_OUTPUT_ACTIVE_LOW,
+    0
+};
+
+// Internal PWM init 
+// only runs once per PWM LED
+void _init_pwm(pwm_led_t* led) {
+    if (!led->init_complete) {
+        for (int i=0; i<NUM_RGB_IDX; i++) {
+            palSetPadMode(PAL_PORT(led->pin[i]), PAL_PAD(led->pin[i]), PWM_PAL_MODE);
+
+            static PWMConfig pwmCFG = {
+                .frequency = PWM_PWM_COUNTER_FREQUENCY,
+                .period    = PWM_PWM_PERIOD,
+            };
+
+            // Channels are always configured as active low
+            // If active high is needed, pwm is inverted in _set_led_pwm()
+            pwmCFG.channels[0].mode = PWM_OUTPUT_ACTIVE_LOW;
+            pwmCFG.channels[1].mode = PWM_OUTPUT_ACTIVE_LOW;
+            pwmStart(led->driver[i], &pwmCFG);
+
+            // Start LEDs in the OFF state 
+            uint8_t pwm = led->mode == PWM_OUTPUT_ACTIVE_HIGH ? 100 : 0;
+            pwmEnableChannel(led->driver[i], led->channel[i], PWM_FRACTION_TO_WIDTH(led->driver[i], 99, pwm));
+        }
+        
+        led->init_complete = 1;
+    }
+}
+
+// Internal generic PWM setter
+void _set_led_pwm(uint8_t pwm, pwm_led_t* led, uint8_t channel) {
+    if (pwm > 100) pwm = 100;
+    if (led->mode == PWM_OUTPUT_ACTIVE_HIGH) pwm = (100 - pwm);
+
+    _init_pwm(led);
+    pwmEnableChannel(led->driver[channel], led->channel[channel], PWM_FRACTION_TO_WIDTH(led->driver[channel], 99, pwm));
+}
+
+// SCRAMBLE
+void set_scramble_LED(uint8_t mode) {
+    switch(mode) {
+        case LED_ON:
+            set_scramble_LED_rgb_pwm(65, 100, 95);
+        break;
+
+        case LED_DIM:
+            set_scramble_LED_rgb_pwm(3, 9, 3);
+        break;
+
+        default: //LED_OFF
+            set_scramble_LED_rgb_pwm(0, 0, 0);
+        break;
+    }
+}
+
+void set_scramble_LED_rgb_pwm(uint8_t r_pwm, uint8_t g_pwm, uint8_t b_pwm) {
+    _set_led_pwm(r_pwm, &scramble_rgb, RED);
+    _set_led_pwm(g_pwm, &scramble_rgb, GREEN);
+    _set_led_pwm(b_pwm, &scramble_rgb, BLUE);
+}
+
+void set_scramble_LED_r_pwm(uint8_t pwm) {
+    _set_led_pwm(pwm, &scramble_rgb, RED);
+}
+
+void set_scramble_LED_g_pwm(uint8_t pwm) {
+    _set_led_pwm(pwm, &scramble_rgb, GREEN);
+}
+
+void set_scramble_LED_b_pwm(uint8_t pwm) {
+    _set_led_pwm(pwm, &scramble_rgb, BLUE);
+}
diff --git a/keyboards/nullbitsco/scramble/v2/v2.h b/keyboards/nullbitsco/scramble/v2/v2.h
new file mode 100644
index 0000000000..d278c0a86a
--- /dev/null
+++ b/keyboards/nullbitsco/scramble/v2/v2.h
@@ -0,0 +1,43 @@
+// Copyright 2022 Jay Greco
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "scramble.h"
+#include <hal.h>
+
+enum led_mode {
+    LED_OFF = 0,
+    LED_DIM,
+    LED_ON,
+    NUM_LED_MODE
+};
+
+enum rgb_idx {
+    RED = 0,
+    GREEN,
+    BLUE,
+    NUM_RGB_IDX
+};
+
+typedef struct pwm_led_t {
+    uint32_t pin[3];
+    PWMDriver* driver[3];
+    uint8_t channel[3];
+    uint8_t mode;
+    uint8_t init_complete;
+} pwm_led_t;
+
+#define PWM_PAL_MODE (PAL_MODE_ALTERNATE_PWM | PAL_RP_PAD_DRIVE12 | PAL_RP_GPIO_OE)
+#define PWM_PWM_COUNTER_FREQUENCY 1000000
+#define PWM_PWM_PERIOD PWM_PWM_COUNTER_FREQUENCY / 1000
+
+// RP2040 adds HW PWM control!
+// PWM values are in percent, 0-100
+void
+    set_scramble_LED(uint8_t mode),
+    set_scramble_LED_rgb_pwm(uint8_t r_pwm, uint8_t g_pwm, uint8_t b_pwm),
+    set_scramble_LED_r_pwm(uint8_t pwm),
+    set_scramble_LED_g_pwm(uint8_t pwm),
+    set_scramble_LED_b_pwm(uint8_t pwm);
+    
\ No newline at end of file