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294 lines
12 KiB
C
294 lines
12 KiB
C
/*
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* This file is part of the Micro Python 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) 2020 Jeff Epler for Adafruit Industries
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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 "py/obj.h"
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#include "py/objproperty.h"
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#include "py/runtime.h"
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#include "py/objarray.h"
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#include "common-hal/_protomatter/Protomatter.h"
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#include "shared-bindings/_protomatter/Protomatter.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "shared-bindings/microcontroller/__init__.h"
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#include "shared-bindings/util.h"
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#include "shared-module/displayio/__init__.h"
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#include "shared-module/framebufferio/__init__.h"
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#include "shared-module/framebufferio/FramebufferDisplay.h"
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//| .. currentmodule:: _protomatter
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//|
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//| :class:`protomatter` -- Driver for HUB75-style RGB LED matrices
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//| ================================================================
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//|
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extern Protomatter_core *_PM_protoPtr;
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STATIC uint8_t validate_pin(mp_obj_t obj) {
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mcu_pin_obj_t *result = validate_obj_is_free_pin(obj);
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return common_hal_mcu_pin_number(result);
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}
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STATIC void validate_pins(qstr what, uint8_t* pin_nos, mp_int_t max_pins, mp_obj_t seq, uint8_t *count_out) {
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mp_int_t len = MP_OBJ_SMALL_INT_VALUE(mp_obj_len(seq));
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if (len > max_pins) {
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mp_raise_ValueError_varg(translate("At most %d %q may be specified"), max_pins, what);
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}
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*count_out = len;
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for (mp_int_t i=0; i<len; i++) {
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pin_nos[i] = validate_pin(mp_obj_subscr(seq, MP_OBJ_NEW_SMALL_INT(i), MP_OBJ_SENTINEL));
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}
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}
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STATIC void claim_pin_nr(mp_obj_t pin) {
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common_hal_mcu_pin_claim(pin);
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common_hal_never_reset_pin(pin);
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}
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STATIC void claim_pins_nr(mp_obj_t seq) {
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mp_int_t len = MP_OBJ_SMALL_INT_VALUE(mp_obj_len(seq));
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for (mp_int_t i=0; i<len; i++) {
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claim_pin_nr(mp_obj_subscr(seq, MP_OBJ_NEW_SMALL_INT(i), MP_OBJ_SENTINEL));
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}
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}
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//| :class:`~_protomatter.Protomatter` displays an in-memory framebuffer to an LED matrix.
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//|
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//| .. class:: Protomatter(width, bit_depth, rgb_pins, addr_pins, clock_pin, latch_pin, oe_pin, *, doublebuffer=True, framebuffer=None)
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//|
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//| Create a Protomatter object with the given attributes. The height of
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//| the display is determined by the number of rgb and address pins:
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//| len(rgb_pins)/3 * 2 ** len(address_pins). With 6 RGB pins and 4
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//| address lines, the display will be 32 pixels tall.
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//|
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//| Up to 30 RGB pins and 8 address pins are supported.
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//|
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//| The RGB pins must be within a single "port" and performance and memory
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//| usage are best when they are all within "close by" bits of the port.
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//| The clock pin must also be on the same port as the RGB pins. See the
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//| documentation of the underlying protomatter C library for more
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//| information. Generally, Adafruit's interface boards are designed so
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//| that these requirements are met when matched with the intended
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//| microcontroller board. For instance, the Feather M4 Express works
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//| together with the RGB Matrix Feather.
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//|
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//| When specified as True, double buffering can reduce some flickering of
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//| the matrix; however, this increases memory usage.
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//|
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//| The framebuffer is in "RGB565" format. If a framebuffer is not
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//| passed in, one is allocated and initialized to all black. To update
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//| the content, modify the framebuffer and call swapbuffers.
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//|
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//| If doublebuffer is False, some memory is saved, but the display may
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//| flicker during updates.
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//|
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//| If a framebuffer is not passed in, one is allocated internally. To
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//| retrieve it, pass the protomatter object to memoryview().
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//|
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STATIC mp_obj_t protomatter_protomatter_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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enum { ARG_width, ARG_bit_depth, ARG_rgb_list, ARG_addr_list,
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ARG_clock_pin, ARG_latch_pin, ARG_oe_pin, ARG_doublebuffer, ARG_framebuffer };
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_width, MP_ARG_INT | MP_ARG_REQUIRED },
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{ MP_QSTR_bit_depth, MP_ARG_INT | MP_ARG_REQUIRED },
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{ MP_QSTR_rgb_pins, MP_ARG_OBJ | MP_ARG_REQUIRED },
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{ MP_QSTR_addr_pins, MP_ARG_OBJ | MP_ARG_REQUIRED },
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{ MP_QSTR_clock_pin, MP_ARG_OBJ | MP_ARG_REQUIRED },
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{ MP_QSTR_latch_pin, MP_ARG_OBJ | MP_ARG_REQUIRED },
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{ MP_QSTR_oe_pin, MP_ARG_OBJ | MP_ARG_REQUIRED },
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{ MP_QSTR_doublebuffer, MP_ARG_BOOL, { .u_bool = true } },
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{ MP_QSTR_framebuffer, MP_ARG_OBJ, { .u_obj = mp_const_none } },
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};
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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// Because interrupt handlers point directly at protomatter objects,
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// it is NOT okay to move them to the long-lived pool later. Allocate
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// them there to begin with, since generally they'll be long-lived anyway.
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protomatter_protomatter_obj_t *self = &allocate_display_bus_or_raise()->protomatter;
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self->base.type = &protomatter_Protomatter_type;
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uint8_t rgb_count, addr_count;
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uint8_t rgb_pins[MP_ARRAY_SIZE(self->rgb_pins)];
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uint8_t addr_pins[MP_ARRAY_SIZE(self->addr_pins)];
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uint8_t clock_pin = validate_pin(args[ARG_clock_pin].u_obj);
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uint8_t latch_pin = validate_pin(args[ARG_latch_pin].u_obj);
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uint8_t oe_pin = validate_pin(args[ARG_oe_pin].u_obj);
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validate_pins(MP_QSTR_rgb_pins, rgb_pins, MP_ARRAY_SIZE(self->rgb_pins), args[ARG_rgb_list].u_obj, &rgb_count);
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validate_pins(MP_QSTR_addr_pins, addr_pins, MP_ARRAY_SIZE(self->addr_pins), args[ARG_addr_list].u_obj, &addr_count);
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mp_obj_t framebuffer = args[ARG_framebuffer].u_obj;
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if (framebuffer == mp_const_none) {
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int width = args[ARG_width].u_int;
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int bufsize = 2 * width * rgb_count / 3 * (1 << addr_count);
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framebuffer = mp_obj_new_bytearray_of_zeros(bufsize);
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}
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common_hal_protomatter_protomatter_construct(self,
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args[ARG_width].u_int,
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args[ARG_bit_depth].u_int,
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rgb_count, rgb_pins,
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addr_count, addr_pins,
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clock_pin, latch_pin, oe_pin,
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args[ARG_doublebuffer].u_bool,
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framebuffer, NULL);
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claim_pins_nr(args[ARG_rgb_list].u_obj);
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claim_pins_nr(args[ARG_addr_list].u_obj);
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claim_pin_nr(args[ARG_clock_pin].u_obj);
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claim_pin_nr(args[ARG_oe_pin].u_obj);
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claim_pin_nr(args[ARG_latch_pin].u_obj);
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return MP_OBJ_FROM_PTR(self);
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}
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//| .. method:: deinit
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//|
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//| Free the resources (pins, timers, etc.) associated with this
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//| protomatter instance. After deinitialization, no further operations
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//| may be performed.
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//|
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STATIC mp_obj_t protomatter_protomatter_deinit(mp_obj_t self_in) {
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protomatter_protomatter_obj_t *self = (protomatter_protomatter_obj_t*)self_in;
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common_hal_protomatter_protomatter_deinit(self);
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(protomatter_protomatter_deinit_obj, protomatter_protomatter_deinit);
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static void check_for_deinit(protomatter_protomatter_obj_t *self) {
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if (!self->core.rgbPins) {
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raise_deinited_error();
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}
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}
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//| .. attribute:: paused
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//|
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//| When paused, the matrix is not driven and all its LEDs are unlit.
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//|
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STATIC mp_obj_t protomatter_protomatter_get_paused(mp_obj_t self_in) {
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protomatter_protomatter_obj_t *self = (protomatter_protomatter_obj_t*)self_in;
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check_for_deinit(self);
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return mp_obj_new_bool(self->paused);
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}
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MP_DEFINE_CONST_FUN_OBJ_1(protomatter_protomatter_get_paused_obj, protomatter_protomatter_get_paused);
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STATIC mp_obj_t protomatter_protomatter_set_paused(mp_obj_t self_in, mp_obj_t value_in) {
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protomatter_protomatter_obj_t *self = (protomatter_protomatter_obj_t*)self_in;
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check_for_deinit(self);
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bool paused = mp_obj_is_true(value_in);
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if (paused && !self->paused) {
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_PM_stop(&self->core);
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} else if (!paused && self->paused) {
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_PM_resume(&self->core);
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}
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self->paused = paused;
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(protomatter_protomatter_set_paused_obj, protomatter_protomatter_set_paused);
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const mp_obj_property_t protomatter_protomatter_paused_obj = {
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.base.type = &mp_type_property,
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.proxy = {(mp_obj_t)&protomatter_protomatter_get_paused_obj,
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(mp_obj_t)&protomatter_protomatter_set_paused_obj,
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(mp_obj_t)&mp_const_none_obj},
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};
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//| .. method:: write(buf)
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//|
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//| Transmits the color data in the buffer to the pixels so that they are shown.
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//|
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//| The data in the buffer must be in "RGB565" format. This means
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//| that it is organized as a series of 16-bit numbers where the highest 5
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//| bits are interpreted as red, the next 6 as green, and the final 5 as
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//| blue. The object can be any buffer, but `array.array` and `ulab.array`
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//| objects are most often useful.
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//|
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STATIC mp_obj_t protomatter_protomatter_swapbuffers(mp_obj_t self_in) {
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protomatter_protomatter_obj_t *self = (protomatter_protomatter_obj_t*)self_in;
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check_for_deinit(self);
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_PM_convert_565(&self->core, self->bufinfo.buf, self->width);
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_PM_swapbuffer_maybe(&self->core);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(protomatter_protomatter_swapbuffers_obj, protomatter_protomatter_swapbuffers);
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STATIC const mp_rom_map_elem_t protomatter_protomatter_locals_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&protomatter_protomatter_deinit_obj) },
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{ MP_ROM_QSTR(MP_QSTR_paused), MP_ROM_PTR(&protomatter_protomatter_paused_obj) },
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{ MP_ROM_QSTR(MP_QSTR_swapbuffers), MP_ROM_PTR(&protomatter_protomatter_swapbuffers_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(protomatter_protomatter_locals_dict, protomatter_protomatter_locals_dict_table);
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STATIC void protomatter_protomatter_get_bufinfo(mp_obj_t self_in, mp_buffer_info_t *bufinfo) {
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protomatter_protomatter_obj_t *self = (protomatter_protomatter_obj_t*)self_in;
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check_for_deinit(self);
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*bufinfo = self->bufinfo;
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}
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STATIC void protomatter_protomatter_swapbuffers_void(mp_obj_t self_in) {
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protomatter_protomatter_swapbuffers(self_in);
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}
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STATIC void protomatter_protomatter_deinit_void(mp_obj_t self_in) {
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protomatter_protomatter_deinit(self_in);
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}
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STATIC void protomatter_protomatter_set_brightness(mp_obj_t self_in, mp_float_t value) {
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protomatter_protomatter_set_paused(self_in, mp_obj_new_bool(value <= 0));
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}
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STATIC const framebuffer_p_t protomatter_protomatter_proto = {
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MP_PROTO_IMPLEMENT(MP_QSTR_protocol_framebuffer)
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.get_bufinfo = protomatter_protomatter_get_bufinfo,
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.set_brightness = protomatter_protomatter_set_brightness,
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.swapbuffers = protomatter_protomatter_swapbuffers_void,
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.deinit = protomatter_protomatter_deinit_void,
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};
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STATIC mp_int_t protomatter_protomatter_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bufinfo, mp_uint_t flags) {
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protomatter_protomatter_obj_t *self = (protomatter_protomatter_obj_t*)self_in;
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// a readonly framebuffer would be unusual but not impossible
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if((flags & MP_BUFFER_WRITE) && !(self->bufinfo.typecode & MP_OBJ_ARRAY_TYPECODE_FLAG_RW)) {
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return 1;
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}
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*bufinfo = self->bufinfo;
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return 0;
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}
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const mp_obj_type_t protomatter_Protomatter_type = {
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{ &mp_type_type },
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.name = MP_QSTR_Protomatter,
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.buffer_p = { .get_buffer = protomatter_protomatter_get_buffer, },
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.make_new = protomatter_protomatter_make_new,
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.protocol = &protomatter_protomatter_proto,
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.locals_dict = (mp_obj_dict_t*)&protomatter_protomatter_locals_dict,
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};
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