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-rw-r--r--drivers/sensors/pmw3389.h76
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diff --git a/drivers/sensors/pmw3389.h b/drivers/sensors/pmw3389.h
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+/* Copyright 2021 Alabastard (@Alabastard-64)
+ * Copyright 2020 Christopher Courtney, aka Drashna Jael're (@drashna) <drashna@live.com>
+ * Copyright 2019 Sunjun Kim
+ * Copyright 2020 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
+
+#include <stdint.h>
+
+#ifndef PMW3389_CPI
+# define PMW3389_CPI 2000
+#endif
+
+#ifndef PMW3389_CLOCK_SPEED
+# define PMW3389_CLOCK_SPEED 2000000
+#endif
+
+#ifndef PMW3389_SPI_LSBFIRST
+# define PMW3389_SPI_LSBFIRST false
+#endif
+
+#ifndef PMW3389_SPI_MODE
+# define PMW3389_SPI_MODE 3
+#endif
+
+#ifndef PMW3389_SPI_DIVISOR
+# ifdef __AVR__
+# define PMW3389_SPI_DIVISOR (F_CPU / PMW3389_CLOCK_SPEED)
+# else
+# define PMW3389_SPI_DIVISOR 64
+# endif
+#endif
+
+#ifndef PMW3389_LIFTOFF_DISTANCE
+# define PMW3389_LIFTOFF_DISTANCE 0x02
+#endif
+
+#ifndef ROTATIONAL_TRANSFORM_ANGLE
+# define ROTATIONAL_TRANSFORM_ANGLE 0x00
+#endif
+
+#ifndef PMW3389_CS_PIN
+# error "No chip select pin defined -- missing PMW3389_CS_PIN"
+#endif
+
+typedef struct {
+ int8_t motion;
+ bool isMotion; // True if a motion is detected.
+ bool isOnSurface; // True when a chip is on a surface
+ int16_t dx; // displacement on x directions. Unit: Count. (CPI * Count = Inch value)
+ int8_t mdx;
+ int16_t dy; // displacement on y directions.
+ int8_t mdy;
+} report_pmw3389_t;
+
+bool pmw3389_init(void);
+void pmw3389_upload_firmware(void);
+bool pmw3389_check_signature(void);
+uint16_t pmw3389_get_cpi(void);
+void pmw3389_set_cpi(uint16_t cpi);
+/* Reads and clears the current delta values on the sensor */
+report_pmw3389_t pmw3389_read_burst(void);