circuitpython/shared-module/rgbmatrix/RGBMatrix.c

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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2020 Jeff Epler for Adafruit Industries
*
* 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 "common-hal/rgbmatrix/RGBMatrix.h"
#include "shared-module/rgbmatrix/allocator.h"
#include "shared-bindings/rgbmatrix/RGBMatrix.h"
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#include "shared-bindings/microcontroller/Pin.h"
#include "shared-bindings/microcontroller/__init__.h"
#include "shared-bindings/util.h"
#include "shared-module/framebufferio/FramebufferDisplay.h"
extern Protomatter_core *_PM_protoPtr;
void common_hal_rgbmatrix_rgbmatrix_construct(rgbmatrix_rgbmatrix_obj_t *self, int width, int bit_depth, uint8_t rgb_count, uint8_t *rgb_pins, uint8_t addr_count, uint8_t *addr_pins, uint8_t clock_pin, uint8_t latch_pin, uint8_t oe_pin, bool doublebuffer, mp_obj_t framebuffer, void *timer) {
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self->width = width;
self->bit_depth = bit_depth;
self->rgb_count = rgb_count;
memcpy(self->rgb_pins, rgb_pins, rgb_count);
self->addr_count = addr_count;
memcpy(self->addr_pins, addr_pins, addr_count);
self->clock_pin = clock_pin;
self->oe_pin = oe_pin;
self->latch_pin = latch_pin;
self->doublebuffer = doublebuffer;
self->timer = timer ? timer : common_hal_rgbmatrix_timer_allocate();
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if (self->timer == NULL) {
mp_raise_ValueError(translate("No timer available"));
}
self->width = width;
self->bufsize = 2 * width * rgb_count / 3 * (1 << addr_count);
common_hal_rgbmatrix_rgbmatrix_reconstruct(self, framebuffer);
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}
void common_hal_rgbmatrix_rgbmatrix_reconstruct(rgbmatrix_rgbmatrix_obj_t* self, mp_obj_t framebuffer) {
common_hal_rgbmatrix_timer_disable(self->timer);
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if (framebuffer) {
self->framebuffer = framebuffer;
mp_get_buffer_raise(self->framebuffer, &self->bufinfo, MP_BUFFER_READ);
if (mp_get_buffer(self->framebuffer, &self->bufinfo, MP_BUFFER_RW)) {
self->bufinfo.typecode = 'H' | MP_OBJ_ARRAY_TYPECODE_FLAG_RW;
} else {
self->bufinfo.typecode = 'H';
}
// verify that the matrix is big enough
mp_get_index(mp_obj_get_type(self->framebuffer), self->bufinfo.len, MP_OBJ_NEW_SMALL_INT(self->bufsize-1), false);
} else {
_PM_free(self->bufinfo.buf);
_PM_free(self->protomatter.rgbPins);
_PM_free(self->protomatter.addr);
_PM_free(self->protomatter.screenData);
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self->framebuffer = NULL;
self->bufinfo.buf = common_hal_rgbmatrix_allocator_impl(self->bufsize);
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self->bufinfo.len = self->bufsize;
self->bufinfo.typecode = 'H' | MP_OBJ_ARRAY_TYPECODE_FLAG_RW;
}
memset(&self->protomatter, 0, sizeof(self->protomatter));
ProtomatterStatus stat = _PM_init(&self->protomatter,
self->width, self->bit_depth,
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self->rgb_count/6, self->rgb_pins,
self->addr_count, self->addr_pins,
self->clock_pin, self->latch_pin, self->oe_pin,
self->doublebuffer, self->timer);
if (stat == PROTOMATTER_OK) {
_PM_protoPtr = &self->protomatter;
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common_hal_mcu_disable_interrupts();
common_hal_rgbmatrix_timer_enable(self->timer);
stat = _PM_begin(&self->protomatter);
if (stat == PROTOMATTER_OK) {
_PM_convert_565(&self->protomatter, self->bufinfo.buf, self->width);
}
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common_hal_mcu_enable_interrupts();
if (stat == PROTOMATTER_OK) {
_PM_swapbuffer_maybe(&self->protomatter);
}
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}
if (stat != PROTOMATTER_OK) {
common_hal_rgbmatrix_rgbmatrix_deinit(self);
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switch (stat) {
case PROTOMATTER_ERR_PINS:
mp_raise_ValueError(translate("Invalid pin"));
break;
case PROTOMATTER_ERR_ARG:
mp_raise_ValueError(translate("Invalid argument"));
break;
case PROTOMATTER_ERR_MALLOC:
mp_raise_msg(&mp_type_MemoryError, NULL);
break;
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default:
mp_raise_msg_varg(&mp_type_RuntimeError,
translate("Internal error #%d"), (int)stat);
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break;
}
}
self->paused = 0;
}
STATIC void free_pin(uint8_t *pin) {
if (*pin != COMMON_HAL_MCU_NO_PIN) {
common_hal_mcu_pin_reset_number(*pin);
}
*pin = COMMON_HAL_MCU_NO_PIN;
}
STATIC void free_pin_seq(uint8_t *seq, int count) {
for (int i=0; i<count; i++) {
free_pin(&seq[i]);
}
}
void common_hal_rgbmatrix_rgbmatrix_deinit(rgbmatrix_rgbmatrix_obj_t* self) {
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if (self->timer) {
common_hal_rgbmatrix_timer_free(self->timer);
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self->timer = 0;
}
if (_PM_protoPtr == &self->protomatter) {
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_PM_protoPtr = NULL;
}
free_pin_seq(self->rgb_pins, self->rgb_count);
free_pin_seq(self->addr_pins, self->addr_count);
free_pin(&self->clock_pin);
free_pin(&self->latch_pin);
free_pin(&self->oe_pin);
if (self->protomatter.rgbPins) {
_PM_deallocate(&self->protomatter);
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}
memset(&self->protomatter, 0, sizeof(self->protomatter));
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// If it was supervisor-allocated, it is supervisor-freed and the pointer
// is zeroed, otherwise the pointer is just zeroed
_PM_free(self->bufinfo.buf);
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self->base.type = NULL;
// If a framebuffer was passed in to the constructor, NULL the reference
// here so that it will become GC'able
self->framebuffer = NULL;
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}
void rgbmatrix_rgbmatrix_collect_ptrs(rgbmatrix_rgbmatrix_obj_t* self) {
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gc_collect_ptr(self->framebuffer);
gc_collect_ptr(self->protomatter.rgbPins);
gc_collect_ptr(self->protomatter.addr);
gc_collect_ptr(self->protomatter.screenData);
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}
void common_hal_rgbmatrix_rgbmatrix_set_paused(rgbmatrix_rgbmatrix_obj_t* self, bool paused) {
if (paused && !self->paused) {
_PM_stop(&self->protomatter);
} else if (!paused && self->paused) {
_PM_resume(&self->protomatter);
_PM_convert_565(&self->protomatter, self->bufinfo.buf, self->width);
_PM_swapbuffer_maybe(&self->protomatter);
}
self->paused = paused;
}
bool common_hal_rgbmatrix_rgbmatrix_get_paused(rgbmatrix_rgbmatrix_obj_t* self) {
return self->paused;
}
void common_hal_rgbmatrix_rgbmatrix_refresh(rgbmatrix_rgbmatrix_obj_t* self) {
if (!self->paused) {
_PM_convert_565(&self->protomatter, self->bufinfo.buf, self->width);
_PM_swapbuffer_maybe(&self->protomatter);
}
}
int common_hal_rgbmatrix_rgbmatrix_get_width(rgbmatrix_rgbmatrix_obj_t* self) {
return self->width;
}
int common_hal_rgbmatrix_rgbmatrix_get_height(rgbmatrix_rgbmatrix_obj_t* self) {
int computed_height = (self->rgb_count / 3) << (self->addr_count);
return computed_height;
}
void *common_hal_rgbmatrix_allocator_impl(size_t sz) {
if (gc_alloc_possible()) {
return m_malloc_maybe(sz + sizeof(void*), true);
} else {
supervisor_allocation *allocation = allocate_memory(align32_size(sz), false);
return allocation ? allocation->ptr : NULL;
}
}
void common_hal_rgbmatrix_free_impl(void *ptr_in) {
supervisor_allocation *allocation = allocation_from_ptr(ptr_in);
if (allocation) {
free_memory(allocation);
}
}