Merge 099d0aef68 into 36c3f4deba

keyboards/ploopyco/common/as5600.c

@@ -0,0 +1,69 @@
+/* Copyright 2025 Colin Lam, Ploopy Corporation (contact@ploopy.co)
+ *
+ * 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 "as5600.h"
+#include "print.h"
+
+void as5600_init(void) {
+    i2c_init();
+}
+
+uint16_t get_rawangle(void) {
+    uint8_t data[] = {0, 0};
+    i2c_status_t s = i2c_read_register(AS5600_I2C_ADDRESS, REG_RAWANGLE, data, 2, 100);
+    if (s == I2C_STATUS_TIMEOUT) {
+        printf("Timeout on get_rawangle()\n");
+    } else if (s == I2C_STATUS_ERROR) {
+        printf("Error on get_rawangle()\n");
+    } else {
+        ;
+    }
+    uint16_t rawangle = data[0] << 8 | data[1];
+    return rawangle;
+}
+
+bool is_magnet_too_high(void) {
+    uint8_t data[] = {0};
+    i2c_read_register(AS5600_I2C_ADDRESS, REG_STATUS, data, 1, 100);
+    uint8_t v = (data[0] >> 3) & 0x1;
+    if (v == 1) {
+        return true;
+    } else {
+        return false;
+    }
+}
+
+bool is_magnet_too_low(void) {
+    uint8_t data[] = {0};
+    i2c_read_register(AS5600_I2C_ADDRESS, REG_STATUS, data, 1, 100);
+    uint8_t v = (data[0] >> 4) & 0x1;
+    if (v == 1) {
+        return true;
+    } else {
+        return false;
+    }
+}
+
+bool is_magnet_present(void) {
+    uint8_t data[] = {0};
+    i2c_read_register(AS5600_I2C_ADDRESS, REG_STATUS, data, 1, 100);
+    uint8_t v = (data[0] >> 5) & 0x1;
+    if (v == 1) {
+        return true;
+    } else {
+        return false;
+    }
+}

keyboards/ploopyco/common/as5600.h

@@ -0,0 +1,54 @@
+/* Copyright 2025 Colin Lam, Ploopy Corporation (contact@ploopy.co)
+ *
+ * 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/>.
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "i2c_master.h"
+
+#define POINTING_DEVICE_AS5600_TICK_COUNT 128
+
+// 12 was found to be a good value experimentally, balancing good
+// responsiveness with low backlash.
+#define POINTING_DEVICE_AS5600_DEADZONE 12
+
+// The speed divisor decreases the speed. 1 is base speed; 2 is divided by 2,
+// 3 is divided by 3, and so forth. For best results, make sure that
+// POINTING_DEVICE_AS5600_SPEED_DIV is an integer divisor of
+// POINTING_DEVICE_AS5600_DEADZONE (i.e. 3 is an integer divisor of 12, but
+// 5 is not).
+#define POINTING_DEVICE_AS5600_SPEED_DIV 2
+
+#define AS5600_I2C_ADDRESS (0x36 << 1)
+
+#define REG_ZMCO        0x00
+#define REG_ZPOS        0x01
+#define REG_MPOS        0x03
+#define REG_MANG        0x05
+#define REG_CONF        0x07
+#define REG_RAWANGLE    0x0c
+#define REG_ANGLE       0x0e
+#define REG_STATUS      0x0b
+#define REG_AGC         0x1a
+#define REG_MAGNITUDE   0x1b
+#define REG_BURN        0xff
+
+void as5600_init(void);
+uint16_t get_rawangle(void);
+bool is_magnet_too_high(void);
+bool is_magnet_too_low(void);
+bool is_magnet_present(void);

keyboards/ploopyco/knob/config.h

@@ -0,0 +1,29 @@
+/* Copyright 2025 Colin Lam (Ploopy Corporation)
+ *
+ * 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/>.
+ */
+
+#pragma once
+
+#define POINTING_DEVICE_HIRES_SCROLL_ENABLE 0
+#define POINTING_DEVICE_AS5600_ENABLE true
+
+#define I2C_DRIVER I2CD1
+#define I2C1_SDA_PIN GP22
+#define I2C1_SCL_PIN GP23
+
+#define UNUSABLE_PINS \
+    { GP0, GP1, GP2, GP3, GP4, GP5, GP6, GP7, GP8, GP9, GP10, GP11, GP12, \
+      GP13, GP14, GP15, GP16, GP17, GP18, GP19, GP20, GP21, GP24, GP25, \
+      GP26, GP27, GP29 }

keyboards/ploopyco/knob/info.json

@@ -0,0 +1,28 @@
+{
+    "keyboard_name": "Ploopy Knob",
+    "url": "www.ploopy.co",
+    "maintainer": "ploopyco",
+    "manufacturer": "Ploopy Corporation",
+    "processor": "RP2040",
+    "bootloader": "rp2040",
+    "usb": {
+        "vid": "0x5043",
+        "pid": "0x63C3",
+        "max_power": 100
+    },
+    "features": {
+        "extrakey": true,
+        "mousekey": true,
+        "nkro": true,
+        "pointing_device": true,
+        "console": true,
+        "os_detection": true
+    },
+    "layouts": {
+        "LAYOUT": {
+            "layout": [
+                {"x": 0, "y": 0, "matrix": [0, 0]}
+            ]
+        }
+    }
+}

keyboards/ploopyco/knob/keymaps/default/keymap.c

@@ -0,0 +1,27 @@
+/* Copyright 2023 Colin Lam (Ploopy Corporation)
+ *
+ * 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 QMK_KEYBOARD_H
+
+// Dummy
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {{{ KC_NO }}};
+
+void keyboard_post_init_user(void) {
+    // Customise these values to desired behaviour
+    // debug_enable=true;
+    // debug_matrix=true;
+    // debug_keyboard=true;
+    // debug_mouse=true;
+}

keyboards/ploopyco/knob/post_rules.mk

@@ -0,0 +1,4 @@
+VPATH += keyboards/ploopyco/common
+SRC += as5600.c
+I2C_DRIVER_REQUIRED = yes
+POINTING_DEVICE_DRIVER = custom

keyboards/ploopyco/knob/readme.md

@@ -0,0 +1,31 @@
+# Ploopyco Knob
+
+It's a DIY, QMK-powered knob!
+
+* Keyboard Maintainer: [PloopyCo](https://github.com/ploopyco)
+* Hardware Supported: RP2040
+* Hardware Availability: [Store](https://ploopy.co/knob), [GitHub](https://github.com/ploopyco)
+
+Make example for this keyboard (after setting up your build environment):
+
+    qmk compile -kb ploopyco/knob/rev1_001 -km default
+
+# Building Firmware
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
+
+# Triggering the Bootloader
+
+[Do you see those two golden holes in the board](https://ploopy.co/wp-content/uploads/2025/06/knob-vias.jpg)? Those are called **vias**. They act exactly like a switch does. Right now, that switch is OFF. However, if you take a paperclip or a pair of metal tweezers and touch those two vias, the two vias will form an electrical connection. Effectively, that switch turns ON.
+
+Go ahead and connect the two vias, and then (while the vias are connected) plug in the Knob board into your computer.
+
+The computer should recognise that a mass storage device was just plugged in. Once this is done, you should be able to drag and drop files onto the Knob board, as if the board was a USB drive. Feel free to remove the tweezers or paperclip at this point.
+
+If you want to upload a new firmware file (a ".uf2" file, like "knob_awesome_version.uf2" or something), just drag it into the folder, and it'll automatically install on the Knob board and restart itself, in normal operating mode. You're done!
+
+**TIP**: If your firmware is in some kind of strange state and uploading new firmware isn't fixing it, try uploading [a flash nuke](https://learn.adafruit.com/getting-started-with-raspberry-pi-pico-circuitpython/circuitpython#flash-resetting-uf2-3083182) to the Knob board before flashing the new firmware. It wipes the memory of the Knob board completely clean, which can help clear a few types of errors.
+
+# Customizing your Ploopy Knob
+
+You can find customziation options [here](../readme.md).

keyboards/ploopyco/knob/rev1_001/keyboard.json

@@ -0,0 +1,10 @@
+{
+    "usb": {
+        "device_version": "1.0.0"
+    },
+    "matrix_pins": {
+        "direct": [
+            [null]
+        ]
+    }
+}

keyboards/ploopyco/knob/rev1_001/readme.md

@@ -0,0 +1,3 @@
+This is the R1.001 version of the Knob. Future versions may have other features.
+
+See the [main readme](../readme.md) for more details.

keyboards/ploopyco/ploopyco.c

@@ -19,6 +19,7 @@
 #include "ploopyco.h"
 #include "analog.h"
 #include "opt_encoder.h"
+#include "as5600.h"
 
 // for legacy support
 #if defined(OPT_DEBOUNCE) && !defined(PLOOPY_SCROLL_DEBOUNCE)
@@ -58,6 +59,10 @@
 #    define ENCODER_BUTTON_COL 0
 #endif
 
+#ifdef POINTING_DEVICE_AS5600_ENABLE
+uint16_t current_position = 0;
+#endif
+
 keyboard_config_t keyboard_config;
 uint16_t          dpi_array[] = PLOOPY_DPI_OPTIONS;
 #define DPI_OPTION_SIZE ARRAY_SIZE(dpi_array)
@@ -163,6 +168,38 @@ report_mouse_t pointing_device_task_kb(report_mouse_t mouse_report) {
         mouse_report.y = 0;
     }
 
+#ifdef POINTING_DEVICE_AS5600_ENABLE
+    // Get AS5600 rawangle
+    uint16_t ra = get_rawangle();
+    int16_t delta = (int16_t)(ra - current_position);
+
+    // Wrap into [-2048, 2047] to get shortest direction
+    if (delta > 2048) {
+        delta -= 4096;
+    } else if (delta < -2048) {
+        delta += 4096;
+    }
+
+    if (detected_host_os() == OS_WINDOWS || detected_host_os() == OS_LINUX) {
+        // Establish a deadzone to prevent spurious inputs
+        if (delta > POINTING_DEVICE_AS5600_DEADZONE || delta < -POINTING_DEVICE_AS5600_DEADZONE) {
+            current_position = ra;
+            mouse_report.v = delta / POINTING_DEVICE_AS5600_SPEED_DIV;
+        }
+    } else {
+        // Certain operating systems, like MacOS, don't play well with the
+        // high-res scrolling implementation. For more details, see:
+        // https://github.com/qmk/qmk_firmware/issues/17585#issuecomment-2325248167
+        if (delta >= POINTING_DEVICE_AS5600_TICK_COUNT) {
+            current_position = ra;
+            mouse_report.v = 1;
+        } else if (delta <= -POINTING_DEVICE_AS5600_TICK_COUNT) {
+            current_position = ra;
+            mouse_report.v = -1;
+        }
+    }
+#endif
+
     return pointing_device_task_user(mouse_report);
 }
 
@@ -237,6 +274,14 @@ void pointing_device_init_kb(void) {
     pointing_device_set_cpi(dpi_array[keyboard_config.dpi_config]);
 }
 
+#ifdef POINTING_DEVICE_AS5600_ENABLE
+void keyboard_post_init_kb(void) {
+    // Init the AS5600 controlling the Dial
+    as5600_init();
+    current_position = get_rawangle();
+}
+#endif
+
 void eeconfig_init_kb(void) {
     keyboard_config.dpi_config = PLOOPY_DPI_DEFAULT;
     eeconfig_update_kb(keyboard_config.raw);