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nrf5/drivers: Adding a new framebuffer implementation to replace the mono_fb.

This commit is contained in:
Glenn Ruben Bakke 2017-01-15 16:15:21 +01:00
parent a5bb966614
commit 46caefbeeb
2 changed files with 213 additions and 0 deletions
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116
nrf5/drivers/display/framebuffer.c Normal file
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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2017 Glenn Ruben Bakke
*
* 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 <stdio.h>
#include <string.h>
#include "py/obj.h"
#include "framebuffer.h"
#if MICROPY_PY_DISPLAY_FRAMEBUFFER
void framebuffer_init(framebuffer_t * p_fb, framebuffer_init_t * p_init_conf) {
uint16_t width = p_init_conf->width;
uint16_t height = p_init_conf->height;
if (p_init_conf->line_orientation == FRAMEBUFFER_LINE_DIR_HORIZONTAL) {
uint16_t dirty_row_stride = height / 8;
p_fb->fb_dirty = m_new(framebuffer_byte_t, dirty_row_stride);
p_fb->fb_dirty_stride = dirty_row_stride;
p_fb->fb_stride = width / 8;
} else { // FRAMEBUFFER_LINE_DIR_VERTICAL
uint16_t dirty_column_stride = width / 8;
p_fb->fb_dirty = m_new(framebuffer_byte_t, dirty_column_stride);
p_fb->fb_dirty_stride = dirty_column_stride;
p_fb->fb_stride = height / 8;
}
p_fb->fb_new = m_new(framebuffer_byte_t, (width * height / 8));
if (p_init_conf->double_buffer) {
p_fb->fb_old = m_new(framebuffer_byte_t, (width * height / 8));
}
p_fb->line_orientation = p_init_conf->line_orientation;
p_fb->screen_width = width;
p_fb->screen_height = height;
}
void framebuffer_flip(framebuffer_t * p_fb) {
if (p_fb->fb_double) {
framebuffer_byte_t * old = p_fb->fb_old;
p_fb->fb_old = p_fb->fb_new;
p_fb->fb_new = old;
}
}
void framebuffer_pixel_set(framebuffer_t * p_fb, uint16_t x, uint16_t y) {
if (p_fb->line_orientation == FRAMEBUFFER_LINE_DIR_HORIZONTAL) {
uint16_t col = (x / 8);
uint16_t row = y;
uint8_t bit_pos = x % 8;
p_fb->fb_new[row * (p_fb->fb_stride) + col].byte |= (1 << bit_pos);
p_fb->fb_dirty[y / 8].byte |= (uint8_t)(0x1 << y % 8);
} else {
uint16_t col = x;
uint16_t row = (y / 8);
uint8_t bit_pos = y % 8;
p_fb->fb_new[col * (p_fb->fb_stride) + row].byte |= (1 << bit_pos);
p_fb->fb_dirty[x / 8].byte |= (uint8_t)(0x1 << x % 8);
}
}
void framebuffer_pixel_clear(framebuffer_t * p_fb, uint16_t x, uint16_t y) {
if (p_fb->line_orientation == FRAMEBUFFER_LINE_DIR_HORIZONTAL) {
uint16_t col = (x / 8);
uint16_t row = y;
uint8_t bit_pos = x % 8;
p_fb->fb_new[row * (p_fb->fb_stride) + col].byte &= ~(1 << bit_pos);
p_fb->fb_dirty[y / 8].byte |= (uint8_t)(0x1 << y % 8);
} else {
uint16_t col = x;
uint16_t row = (y / 8);
uint8_t bit_pos = y % 8;
p_fb->fb_new[col * (p_fb->fb_stride) + row].byte &= ~(1 << bit_pos);
p_fb->fb_dirty[x / 8].byte |= (uint8_t)(0x1 << x % 8);
}
}
void framebuffer_clear(framebuffer_t * p_fb) {
memset(p_fb->fb_new, 0x00, p_fb->screen_width * p_fb->screen_height / 8);
memset(p_fb->fb_dirty, 0xFF, p_fb->fb_dirty_stride);
}
void framebuffer_fill(framebuffer_t * p_fb) {
memset(p_fb->fb_new, 0xFF, p_fb->screen_width * p_fb->screen_height / 8);
memset(p_fb->fb_dirty, 0xFF, p_fb->fb_dirty_stride);
}
#endif // MICROPY_PY_DISPLAY_FRAMEBUFFER

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nrf5/drivers/display/framebuffer.h Normal file
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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2017 Glenn Ruben Bakke
*
* 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.
*/
#ifndef DISPLAY_FRAMEBUFFER_H__
#define DISPLAY_FRAMEBUFFER_H__
#include <stdint.h>
#include <stdbool.h>
typedef struct {
uint8_t bit0 : 1;
uint8_t bit1 : 1;
uint8_t bit2 : 1;
uint8_t bit3 : 1;
uint8_t bit4 : 1;
uint8_t bit5 : 1;
uint8_t bit6 : 1;
uint8_t bit7 : 1;
} bits_le_t;
typedef struct {
uint8_t bit7 : 1;
uint8_t bit6 : 1;
uint8_t bit5 : 1;
uint8_t bit4 : 1;
uint8_t bit3 : 1;
uint8_t bit2 : 1;
uint8_t bit1 : 1;
uint8_t bit0 : 1;
} bits_be_t;
typedef struct {
union {
uint8_t byte;
bits_le_t bits_le;
bits_be_t bits_be;
};
} framebuffer_byte_t;
typedef enum {
FRAMEBUFFER_LINE_DIR_HORIZONTAL,
FRAMEBUFFER_LINE_DIR_VERTICAL
} framebuffer_line_orientation_t;
typedef struct {
framebuffer_byte_t * fb_new;
framebuffer_byte_t * fb_old;
uint16_t fb_stride;
bool fb_double;
framebuffer_byte_t * fb_dirty;
uint16_t fb_dirty_stride;
uint16_t fb_orientation;
uint16_t screen_height;
uint16_t screen_width;
framebuffer_line_orientation_t line_orientation;
} framebuffer_t;
typedef struct {
uint16_t width;
uint16_t height;
framebuffer_line_orientation_t line_orientation;
bool double_buffer;
} framebuffer_init_t;
void framebuffer_init(framebuffer_t * p_fb, framebuffer_init_t * p_init_conf);
void framebuffer_deinit(framebuffer_t * p_fb);
void framebuffer_flip(framebuffer_t * p_fb);
void framebuffer_pixel_set(framebuffer_t * p_fb, uint16_t x, uint16_t y);
void framebuffer_pixel_clear(framebuffer_t * p_fb, uint16_t x, uint16_t y);
void framebuffer_clear(framebuffer_t * p_fb);
void framebuffer_fill(framebuffer_t * p_fb);
#endif // DISPLAY_FRAMEBUFFER_H__