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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2021 Mark Komus
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <string.h>
#include "py/gc.h"
#include "py/obj.h"
#include "py/objarray.h"
#include "py/objproperty.h"
#include "py/runtime.h"
#include "shared-bindings/is31fl3741/IS31FL3741.h"
#include "shared-bindings/util.h"
#include "shared-bindings/busio/I2C.h"
void common_hal_is31fl3741_IS31FL3741_construct(is31fl3741_IS31FL3741_obj_t *self, busio_i2c_obj_t *i2c, uint8_t addr) {
// Probe the bus to see if a device acknowledges the given address.
if (!common_hal_busio_i2c_probe(i2c, addr)) {
self->base.type = &mp_type_NoneType;
mp_raise_ValueError_varg(translate("Unable to find I2C Display at %x"), addr);
}
self->i2c = i2c;
self->device_address = addr;
}
void common_hal_is31fl3741_IS31FL3741_deinit(is31fl3741_IS31FL3741_obj_t *self) {
common_hal_is31fl3741_end_transaction(self); // in case we still had a lock
if (self->i2c == &self->inline_i2c) {
common_hal_busio_i2c_deinit(self->i2c);
self->i2c = NULL;
}
self->base.type = NULL;
}
void common_hal_is31fl3741_write(is31fl3741_IS31FL3741_obj_t *is31, const mp_obj_t *mapping, const uint8_t *pixels, size_t numBytes) {
common_hal_is31fl3741_begin_transaction(is31);
for (size_t i = 0; i < numBytes; i += 3) {
uint16_t ridx = mp_obj_get_int(mapping[i]);
if (ridx != 65535) {
common_hal_is31fl3741_set_led(is31, ridx, IS31GammaTable[pixels[i]], 0); // red
common_hal_is31fl3741_set_led(is31, mp_obj_get_int(mapping[i + 1]), IS31GammaTable[pixels[i + 1]], 0); // green
common_hal_is31fl3741_set_led(is31, mp_obj_get_int(mapping[i + 2]), IS31GammaTable[pixels[i + 2]], 0); // blue
}
}
common_hal_is31fl3741_end_transaction(is31);
}
void common_hal_is31fl3741_begin_transaction(is31fl3741_IS31FL3741_obj_t *self) {
while (!common_hal_busio_i2c_try_lock(self->i2c)) {
RUN_BACKGROUND_TASKS;
if (mp_hal_is_interrupted()) {
break;
}
}
}
void common_hal_is31fl3741_end_transaction(is31fl3741_IS31FL3741_obj_t *self) {
common_hal_busio_i2c_unlock(self->i2c);
}
uint8_t is31fl3741_cur_page = 99; // set to invalid page to start
void common_hal_is31fl3741_send_unlock(is31fl3741_IS31FL3741_obj_t *self) {
uint8_t unlock[2] = { 0xFE, 0xC5 }; // unlock command
common_hal_busio_i2c_write(self->i2c, self->device_address, unlock, 2);
}
void common_hal_is31fl3741_set_page(is31fl3741_IS31FL3741_obj_t *self, uint8_t p) {
if (p == is31fl3741_cur_page) {
return;
}
is31fl3741_cur_page = p;
common_hal_is31fl3741_send_unlock(self);
uint8_t page[2] = { 0xFD, 0x00 }; // page command
page[1] = p;
common_hal_busio_i2c_write(self->i2c, self->device_address, page, 2);
}
void common_hal_is31fl3741_send_enable(is31fl3741_IS31FL3741_obj_t *self) {
common_hal_is31fl3741_set_page(self, 4);
uint8_t enable[2] = { 0x00, 0x01 }; // enable command
common_hal_busio_i2c_write(self->i2c, self->device_address, enable, 2);
}
void common_hal_is31fl3741_send_reset(is31fl3741_IS31FL3741_obj_t *self) {
common_hal_is31fl3741_set_page(self, 4);
uint8_t rst[2] = { 0x3F, 0xAE }; // reset command
common_hal_busio_i2c_write(self->i2c, self->device_address, rst, 2);
}
void common_hal_is31fl3741_set_current(is31fl3741_IS31FL3741_obj_t *self, uint8_t current) {
common_hal_is31fl3741_set_page(self, 4);
uint8_t gcur[2] = { 0x01, 0x00 }; // global current command
gcur[1] = current;
common_hal_busio_i2c_write(self->i2c, self->device_address, gcur, 2);
}
uint8_t common_hal_is31fl3741_get_current(is31fl3741_IS31FL3741_obj_t *self) {
common_hal_is31fl3741_set_page(self, 4);
uint8_t gcur = 0x01; // global current command
common_hal_busio_i2c_write_read(self->i2c, self->device_address, &gcur, 1, &gcur, 1);
return gcur;
}
void common_hal_is31fl3741_set_led(is31fl3741_IS31FL3741_obj_t *self, uint16_t led, uint8_t level, uint8_t page) {
uint8_t cmd[2] = { 0x00, 0x00 };
if (led < 180) {
common_hal_is31fl3741_set_page(self, page);
cmd[0] = (uint8_t)led;
} else {
common_hal_is31fl3741_set_page(self, page + 1);
cmd[0] = (uint8_t)(led - 180);
}
cmd[1] = level;
common_hal_busio_i2c_write(self->i2c, self->device_address, cmd, 2);
}
void common_hal_is31fl3741_draw_pixel(is31fl3741_IS31FL3741_obj_t *self, int16_t x, int16_t y, uint32_t color, uint16_t *mapping) {
uint8_t r = color >> 16 & 0xFF;
uint8_t g = color >> 8 & 0xFF;
uint8_t b = color & 0xFF;
int16_t x1 = (x * 5 + y) * 3;
uint16_t ridx = mapping[x1 + 2];
if (ridx != 65535) {
uint16_t gidx = mapping[x1 + 1];
uint16_t bidx = mapping[x1 + 0];
common_hal_is31fl3741_set_led(self, ridx, r, 0);
common_hal_is31fl3741_set_led(self, gidx, g, 0);
common_hal_is31fl3741_set_led(self, bidx, b, 0);
}
}
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