75 lines
2.8 KiB
C
75 lines
2.8 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2021 Mark Komus
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "shared-bindings/is31fl3741/__init__.h"
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#include "shared-bindings/busio/I2C.h"
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#include "shared-bindings/is31fl3741/IS31FL3741.h"
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void begin_transaction(busio_i2c_obj_t *i2c) {
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while (!common_hal_busio_i2c_try_lock(i2c)) {
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RUN_BACKGROUND_TASKS;
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if (mp_hal_is_interrupted()) {
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break;
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}
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}
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}
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void end_transaction(busio_i2c_obj_t *i2c) {
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common_hal_busio_i2c_unlock(i2c);
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}
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void common_hal_is31fl3741_init(busio_i2c_obj_t *i2c, uint8_t addr) {
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begin_transaction(i2c);
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uint8_t command = 0xFC; // device ID
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common_hal_busio_i2c_write(i2c, addr, &command, 1, false);
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uint8_t data = 0;
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common_hal_busio_i2c_read(i2c, addr, &data, 1);
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is31fl3741_send_reset(i2c, addr);
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is31fl3741_send_enable(i2c, addr);
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is31fl3741_set_current(i2c, addr, 0xFF);
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// set scale (brightness) to max for all LEDs
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for (int i = 0; i < 351; i++) {
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is31fl3741_set_led(i2c, addr, i, 0xFF, 2);
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}
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end_transaction(i2c);
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}
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void common_hal_is31fl3741_write(busio_i2c_obj_t *i2c, uint8_t addr, const mp_obj_t *mapping, const uint8_t *pixels, size_t numBytes) {
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for (size_t i = 0; i < numBytes; i += 3) {
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uint16_t ridx = mp_obj_get_int(mapping[i]);
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if (ridx != 65535) {
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is31fl3741_set_led(i2c, addr, ridx, IS31GammaTable[pixels[i]], 0); // red
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is31fl3741_set_led(i2c, addr, mp_obj_get_int(mapping[i + 1]), IS31GammaTable[pixels[i + 1]], 0); // green
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is31fl3741_set_led(i2c, addr, mp_obj_get_int(mapping[i + 2]), IS31GammaTable[pixels[i + 2]], 0); // blue
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}
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}
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}
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