SDCard data loading
This commit is contained in:
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13991f31df
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1461c39400
11
Makefile
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11
Makefile
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all: images download
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images:
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cd gallery && for F in *.jpg; do ./convert_image.sh $F $F.bmp
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download: jokes.json
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jokes.json:
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curl -o jokes.json https://github.com/wiz64/superfun/raw/main/database/ichd/jokes-file.json
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124
display.py
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124
display.py
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import epaper
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import microbmp
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import time
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import random
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import os
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import storage
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import gc
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epd_colormap = [
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[0x00, 0x00, 0x00], # black
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[0xff, 0xff, 0xff], # white
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[0x00, 0x90, 0x10], # green
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[0x00, 0x00, 0xee], # blue
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[0xff, 0x00, 0x00], # red
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[0xff, 0xdd, 0x00], # yellow
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[0xff, 0x77, 0x00], # orange
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]
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max_free_height = 200
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def init_display():
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#print("ePaper init ", str(time.localtime()))
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epd = epaper.EPD_5in65()
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epd.fill(epd.White)
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return epd
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def draw_image(epd, filename):
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global epd_colormap
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global free_x, free_y, free_width, free_height
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offset_x = 0
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offset_y = 0
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free_x = 0
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free_y = 0
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free_width = 0
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free_height = 0
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color_map = {}
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def header_callback(header):
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#print("header callback: ", str(header))
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#global epd
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global offset_x, offset_y
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global free_x, free_y, free_width, free_height
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global max_free_height
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w = header[0]
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h = header[1]
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rest_x = (epd.width - w)
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rest_y = (epd.height - h)
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free_x = 0
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free_y = max(h, epd.height - max_free_height)
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free_width = epd.width
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free_height = min(rest_y, max_free_height)
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offset_x = rest_x//2
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offset_y = max(0, rest_y - max_free_height)//2
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def pixel_callback(x, y, color):
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#global epd
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global epd_colormap
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global offset_x, offset_y
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# translate color to color index
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color_index = 0
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color_key = color[0] + color[1] << 8 + color[2] << 16
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if color_key in color_map:
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color_index = color_map[color_key]
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else:
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# search for the best color
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best_index = 0
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best_score = 1000
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for index in range(len(epd_colormap)):
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c1 = epd_colormap[index]
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c2 = color
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score = abs(c1[0] - c2[0]) + abs(c1[1] - c2[1]) + abs(c1[2] - c2[2])
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if score < best_score:
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best_score = score
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best_index = index
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if score < 10:
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break
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color_index = best_index
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color_map[color_key] = color_index
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epd.pixel(offset_x + x, offset_y + y, color_index)
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#print(str(time.localtime()), " BMP ", filename, " loading")
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time_start = time.ticks_ms()
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epd.fill(epd.White)
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microbmp.MicroBMP(header_callback=header_callback, data_callback=pixel_callback).load(filename)
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time_loaded = time.ticks_ms()
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print(" time to load: ", (time_loaded - time_start) / 1000, " s")
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#print(str(time.localtime()), " BMP loaded")
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#epd.EPD_5IN65F_Display(epd.buffer)
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#print(str(time.localtime()), " ePaper printed")
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return [free_x, free_y, free_width, free_height]
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def draw_pattern(epd):
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free_x = 0
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free_y = 400
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free_width = epd.width
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free_height = epd.height - free_y
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epd.fill_rect(0, 0, epd.width, free_y, random.randrange(2,7))
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return [free_x, free_y, free_width, free_height]
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def print_text(epd, text, region, center=False):
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fnt = 8
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x = region[0]
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y = region[1]
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w = region[2]
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h = region[3]
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if center:
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x = (w - len(text)*fnt) // 2
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epd.text(text, x, y, epd.Black)
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def draw_extra(epd, region, caption):
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fnt = 8
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region[0] += 5
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region[1] += 8
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if region[2] < fnt or region[3] < fnt:
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print("Not enough space for extra: ", str(region))
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return
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#epd.rect(region[0], region[1], region[2], region[3], epd.Black)
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#region[0] += random.randrange(50)
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#print_text(str(time.localtime()), region, center=True)
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if caption is not None:
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#region[1] += fnt * 2
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print_text(epd, caption, region)
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print("Caption: ", caption)
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else:
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print("No caption")
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52
main.py
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52
main.py
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import epaper
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import microbmp
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import time
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import random
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import os
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import storage
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import display
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import gc
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gc.enable()
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epd = display.init_display()
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disk = storage.Storage()
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while True:
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disk.mount()
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images = list(filter(lambda x : x.endswith(".bmp"), os.listdir(disk.get_root_path())))
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epd.EPD_5IN65F_Init()
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epd.fill(epd.White)
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filename = random.choice(images)
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print("TV drawing image ", filename)
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free_space = [0,0,0,0]
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try:
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free_space = display.draw_image(epd, disk.get_root_path() + "/" + filename)
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except Exception as e:
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print("Failed drawing image from disk: ", e)
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try:
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free_space = display.draw_image(epd, "tiny.bmp")
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except Exception as e:
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print("Failed drawing fallback image: ", e)
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free_space = display.draw_pattern(epd)
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caption = None
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try:
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caption = storage.load_joke(disk.get_root_path())
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except Exception as e:
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print("Failed loading a joke: ", e)
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try:
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display.draw_extra(epd, free_space, caption)
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except Exception as e:
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print("Failed drawing extra: ", e)
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time_render_start = time.ticks_ms()
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epd.EPD_5IN65F_Display(epd.buffer)
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time_render_stop = time.ticks_ms()
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print(" time to render: ", (time_render_stop - time_render_start) / 1000, " s")
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print("TV showing ", filename)
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epd.Sleep()
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disk.umount()
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print("")
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gc.collect()
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epd.delay_ms(10000 * 1)
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307
sdcard.py
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307
sdcard.py
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"""
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MicroPython driver for SD cards using SPI bus.
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Requires an SPI bus and a CS pin. Provides readblocks and writeblocks
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methods so the device can be mounted as a filesystem.
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Example usage on pyboard:
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import pyb, sdcard, os
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sd = sdcard.SDCard(pyb.SPI(1), pyb.Pin.board.X5)
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pyb.mount(sd, '/sd2')
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os.listdir('/')
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Example usage on ESP8266:
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import machine, sdcard, os
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sd = sdcard.SDCard(machine.SPI(1), machine.Pin(15))
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os.mount(sd, '/sd')
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os.listdir('/')
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S.ource: https://raw.githubusercontent.com/micropython/micropython-lib/master/micropython/drivers/storage/sdcard/sdcard.py
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"""
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from micropython import const
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import time
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_CMD_TIMEOUT = const(100)
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_R1_IDLE_STATE = const(1 << 0)
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# R1_ERASE_RESET = const(1 << 1)
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_R1_ILLEGAL_COMMAND = const(1 << 2)
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# R1_COM_CRC_ERROR = const(1 << 3)
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# R1_ERASE_SEQUENCE_ERROR = const(1 << 4)
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# R1_ADDRESS_ERROR = const(1 << 5)
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# R1_PARAMETER_ERROR = const(1 << 6)
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_TOKEN_CMD25 = const(0xFC)
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_TOKEN_STOP_TRAN = const(0xFD)
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_TOKEN_DATA = const(0xFE)
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class SDCard:
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def __init__(self, spi, cs, baudrate=1320000):
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self.spi = spi
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self.cs = cs
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self.cmdbuf = bytearray(6)
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self.dummybuf = bytearray(512)
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self.tokenbuf = bytearray(1)
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for i in range(512):
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self.dummybuf[i] = 0xFF
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self.dummybuf_memoryview = memoryview(self.dummybuf)
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# initialise the card
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self.init_card(baudrate)
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def init_spi(self, baudrate):
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try:
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master = self.spi.MASTER
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except AttributeError:
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# on ESP8266
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self.spi.init(baudrate=baudrate, phase=0, polarity=0)
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else:
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# on pyboard
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self.spi.init(master, baudrate=baudrate, phase=0, polarity=0)
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def init_card(self, baudrate):
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# init CS pin
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self.cs.init(self.cs.OUT, value=1)
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# init SPI bus; use low data rate for initialisation
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self.init_spi(100000)
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# clock card at least 100 cycles with cs high
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for i in range(16):
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self.spi.write(b"\xff")
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# CMD0: init card; should return _R1_IDLE_STATE (allow 5 attempts)
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for _ in range(5):
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if self.cmd(0, 0, 0x95) == _R1_IDLE_STATE:
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break
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else:
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raise OSError("no SD card")
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# CMD8: determine card version
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r = self.cmd(8, 0x01AA, 0x87, 4)
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if r == _R1_IDLE_STATE:
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self.init_card_v2()
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elif r == (_R1_IDLE_STATE | _R1_ILLEGAL_COMMAND):
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self.init_card_v1()
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else:
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raise OSError("couldn't determine SD card version")
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# get the number of sectors
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# CMD9: response R2 (R1 byte + 16-byte block read)
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if self.cmd(9, 0, 0, 0, False) != 0:
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raise OSError("no response from SD card")
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csd = bytearray(16)
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self.readinto(csd)
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if csd[0] & 0xC0 == 0x40: # CSD version 2.0
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self.sectors = ((csd[8] << 8 | csd[9]) + 1) * 1024
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elif csd[0] & 0xC0 == 0x00: # CSD version 1.0 (old, <=2GB)
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c_size = (csd[6] & 0b11) << 10 | csd[7] << 2 | csd[8] >> 6
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c_size_mult = (csd[9] & 0b11) << 1 | csd[10] >> 7
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read_bl_len = csd[5] & 0b1111
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capacity = (c_size + 1) * (2 ** (c_size_mult + 2)) * (2**read_bl_len)
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self.sectors = capacity // 512
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else:
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raise OSError("SD card CSD format not supported")
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# print('sectors', self.sectors)
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# CMD16: set block length to 512 bytes
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if self.cmd(16, 512, 0) != 0:
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raise OSError("can't set 512 block size")
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# set to high data rate now that it's initialised
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self.init_spi(baudrate)
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def init_card_v1(self):
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for i in range(_CMD_TIMEOUT):
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time.sleep_ms(50)
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self.cmd(55, 0, 0)
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if self.cmd(41, 0, 0) == 0:
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# SDSC card, uses byte addressing in read/write/erase commands
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self.cdv = 512
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# print("[SDCard] v1 card")
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return
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raise OSError("timeout waiting for v1 card")
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def init_card_v2(self):
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for i in range(_CMD_TIMEOUT):
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time.sleep_ms(50)
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self.cmd(58, 0, 0, 4)
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self.cmd(55, 0, 0)
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if self.cmd(41, 0x40000000, 0) == 0:
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self.cmd(58, 0, 0, -4) # 4-byte response, negative means keep the first byte
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ocr = self.tokenbuf[0] # get first byte of response, which is OCR
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if not ocr & 0x40:
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# SDSC card, uses byte addressing in read/write/erase commands
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self.cdv = 512
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else:
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# SDHC/SDXC card, uses block addressing in read/write/erase commands
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self.cdv = 1
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# print("[SDCard] v2 card")
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return
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raise OSError("timeout waiting for v2 card")
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def cmd(self, cmd, arg, crc, final=0, release=True, skip1=False):
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self.cs(0)
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# create and send the command
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buf = self.cmdbuf
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buf[0] = 0x40 | cmd
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buf[1] = arg >> 24
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buf[2] = arg >> 16
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buf[3] = arg >> 8
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buf[4] = arg
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buf[5] = crc
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self.spi.write(buf)
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if skip1:
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self.spi.readinto(self.tokenbuf, 0xFF)
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# wait for the response (response[7] == 0)
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for i in range(_CMD_TIMEOUT):
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self.spi.readinto(self.tokenbuf, 0xFF)
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response = self.tokenbuf[0]
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if not (response & 0x80):
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# this could be a big-endian integer that we are getting here
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# if final<0 then store the first byte to tokenbuf and discard the rest
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if final < 0:
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self.spi.readinto(self.tokenbuf, 0xFF)
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final = -1 - final
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for j in range(final):
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self.spi.write(b"\xff")
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if release:
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self.cs(1)
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self.spi.write(b"\xff")
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return response
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# timeout
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self.cs(1)
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self.spi.write(b"\xff")
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return -1
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def readinto(self, buf):
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self.cs(0)
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# read until start byte (0xff)
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for i in range(_CMD_TIMEOUT):
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self.spi.readinto(self.tokenbuf, 0xFF)
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if self.tokenbuf[0] == _TOKEN_DATA:
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break
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time.sleep_ms(1)
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else:
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self.cs(1)
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raise OSError("timeout waiting for response")
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# read data
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mv = self.dummybuf_memoryview
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if len(buf) != len(mv):
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mv = mv[: len(buf)]
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self.spi.write_readinto(mv, buf)
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# read checksum
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self.spi.write(b"\xff")
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self.spi.write(b"\xff")
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self.cs(1)
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self.spi.write(b"\xff")
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def write(self, token, buf):
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self.cs(0)
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# send: start of block, data, checksum
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self.spi.read(1, token)
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self.spi.write(buf)
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self.spi.write(b"\xff")
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self.spi.write(b"\xff")
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# check the response
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if (self.spi.read(1, 0xFF)[0] & 0x1F) != 0x05:
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self.cs(1)
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self.spi.write(b"\xff")
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return
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# wait for write to finish
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while self.spi.read(1, 0xFF)[0] == 0:
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pass
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self.cs(1)
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self.spi.write(b"\xff")
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def write_token(self, token):
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self.cs(0)
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self.spi.read(1, token)
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self.spi.write(b"\xff")
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# wait for write to finish
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while self.spi.read(1, 0xFF)[0] == 0x00:
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pass
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self.cs(1)
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self.spi.write(b"\xff")
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def readblocks(self, block_num, buf):
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# workaround for shared bus, required for (at least) some Kingston
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# devices, ensure MOSI is high before starting transaction
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self.spi.write(b"\xff")
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nblocks = len(buf) // 512
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assert nblocks and not len(buf) % 512, "Buffer length is invalid"
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if nblocks == 1:
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# CMD17: set read address for single block
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if self.cmd(17, block_num * self.cdv, 0, release=False) != 0:
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# release the card
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self.cs(1)
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raise OSError(5) # EIO
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# receive the data and release card
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self.readinto(buf)
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else:
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# CMD18: set read address for multiple blocks
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if self.cmd(18, block_num * self.cdv, 0, release=False) != 0:
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# release the card
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self.cs(1)
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raise OSError(5) # EIO
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offset = 0
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mv = memoryview(buf)
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while nblocks:
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# receive the data and release card
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self.readinto(mv[offset : offset + 512])
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offset += 512
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nblocks -= 1
|
||||
if self.cmd(12, 0, 0xFF, skip1=True):
|
||||
raise OSError(5) # EIO
|
||||
|
||||
def writeblocks(self, block_num, buf):
|
||||
# workaround for shared bus, required for (at least) some Kingston
|
||||
# devices, ensure MOSI is high before starting transaction
|
||||
self.spi.write(b"\xff")
|
||||
|
||||
nblocks, err = divmod(len(buf), 512)
|
||||
assert nblocks and not err, "Buffer length is invalid"
|
||||
if nblocks == 1:
|
||||
# CMD24: set write address for single block
|
||||
if self.cmd(24, block_num * self.cdv, 0) != 0:
|
||||
raise OSError(5) # EIO
|
||||
|
||||
# send the data
|
||||
self.write(_TOKEN_DATA, buf)
|
||||
else:
|
||||
# CMD25: set write address for first block
|
||||
if self.cmd(25, block_num * self.cdv, 0) != 0:
|
||||
raise OSError(5) # EIO
|
||||
# send the data
|
||||
offset = 0
|
||||
mv = memoryview(buf)
|
||||
while nblocks:
|
||||
self.write(_TOKEN_CMD25, mv[offset : offset + 512])
|
||||
offset += 512
|
||||
nblocks -= 1
|
||||
self.write_token(_TOKEN_STOP_TRAN)
|
||||
|
||||
def ioctl(self, op, arg):
|
||||
if op == 4: # get number of blocks
|
||||
return self.sectors
|
||||
if op == 5: # get block size in bytes
|
||||
return 512
|
||||
47
storage.py
Normal file
47
storage.py
Normal file
@ -0,0 +1,47 @@
|
||||
import machine
|
||||
import sdcard
|
||||
import uos
|
||||
import random
|
||||
|
||||
class Storage:
|
||||
def __init__(self):
|
||||
self.cs = machine.Pin(17, machine.Pin.OUT)
|
||||
self.spi = machine.SPI(0,
|
||||
baudrate=1000000,
|
||||
polarity=0,
|
||||
phase=0,
|
||||
bits=8,
|
||||
firstbit=machine.SPI.MSB,
|
||||
sck=machine.Pin(18),
|
||||
mosi=machine.Pin(19),
|
||||
miso=machine.Pin(16))
|
||||
self.sd = None
|
||||
self.vfs = None
|
||||
self.sd_path = "/sd"
|
||||
def mount(self):
|
||||
self.sd = sdcard.SDCard(self.spi, self.cs)
|
||||
self.vfs = uos.VfsFat(self.sd)
|
||||
uos.mount(self.vfs, self.sd_path)
|
||||
def umount(self):
|
||||
uos.umount(self.sd_path)
|
||||
def get_root_path(self):
|
||||
return self.sd_path
|
||||
|
||||
|
||||
def load_joke(root):
|
||||
filename = root + "/jokes.json"
|
||||
num_lines = sum(1 for line in open(filename))
|
||||
with open(filename, mode="r") as f:
|
||||
joke = None
|
||||
start_pattern = "\"joke\": \""
|
||||
end_pattern = "\""
|
||||
for i in range(random.randrange(num_lines)):
|
||||
line = f.readline()
|
||||
for i in range(10):
|
||||
line = f.readline()
|
||||
joke_start = line.find(start_pattern)
|
||||
joke_end = line.rfind(end_pattern)
|
||||
if joke_start >= 0 and joke_end >= 0:
|
||||
joke = line[joke_start+len(start_pattern):joke_end]
|
||||
return joke
|
||||
return None
|
||||
64
test.py
64
test.py
@ -3,6 +3,7 @@ import microbmp
|
||||
import time
|
||||
import random
|
||||
import os
|
||||
import storage
|
||||
import gc
|
||||
|
||||
gc.enable()
|
||||
@ -18,7 +19,6 @@ epd_colormap = [
|
||||
[0xff, 0x77, 0x00], # orange
|
||||
]
|
||||
|
||||
images = list(filter(lambda x : x.endswith(".bmp"), os.listdir()))
|
||||
max_free_height = 200
|
||||
|
||||
def init_display():
|
||||
@ -107,6 +107,25 @@ def draw_pattern():
|
||||
epd.fill_rect(0, 0, epd_resolution[0], free_y, random.randrange(2,7))
|
||||
return [free_x, free_y, free_width, free_height]
|
||||
|
||||
def load_joke(root):
|
||||
filename = root + "/jokes.json"
|
||||
num_lines = sum(1 for line in open(filename))
|
||||
with open(filename, mode="r") as f:
|
||||
joke = None
|
||||
start_pattern = "\"joke\": \""
|
||||
end_pattern = "\""
|
||||
for i in range(random.randrange(num_lines)):
|
||||
line = f.readline()
|
||||
for i in range(10):
|
||||
line = f.readline()
|
||||
joke_start = line.find(start_pattern)
|
||||
joke_end = line.rfind(end_pattern)
|
||||
if joke_start >= 0 and joke_end >= 0:
|
||||
joke = line[joke_start+len(start_pattern):joke_end]
|
||||
return joke
|
||||
return None
|
||||
|
||||
|
||||
def print_text(text, region, center=False):
|
||||
global epd
|
||||
fnt = 8
|
||||
@ -118,40 +137,61 @@ def print_text(text, region, center=False):
|
||||
x = (w - len(text)*fnt) // 2
|
||||
epd.text(text, x, y, epd.Black)
|
||||
|
||||
def draw_extra(region):
|
||||
def draw_extra(region, caption):
|
||||
fnt = 8
|
||||
region[0] += 5
|
||||
region[1] += 5
|
||||
region[1] += 8
|
||||
if region[2] < fnt or region[3] < fnt:
|
||||
print("Not enough space for extra: ", str(region))
|
||||
return
|
||||
#epd.rect(region[0], region[1], region[2], region[3], epd.Black)
|
||||
#region[0] += random.randrange(50)
|
||||
print_text(str(time.localtime()), region, center=True)
|
||||
region[1] += fnt * 3
|
||||
print_text(" Today: Rainy, 24 C", region)
|
||||
|
||||
region[1] += fnt * 2
|
||||
print_text("Tomorrow: Sunshine, 26 C", region)
|
||||
#print_text(str(time.localtime()), region, center=True)
|
||||
if caption is not None:
|
||||
#region[1] += fnt * 2
|
||||
print_text(caption, region)
|
||||
print("Caption: ", caption)
|
||||
else:
|
||||
print("No caption")
|
||||
|
||||
# MAIN
|
||||
|
||||
epd = init_display()
|
||||
disk = storage.Storage()
|
||||
|
||||
while True:
|
||||
disk.mount()
|
||||
images = list(filter(lambda x : x.endswith(".bmp"), os.listdir(disk.get_root_path())))
|
||||
epd.EPD_5IN65F_Init()
|
||||
epd.fill(epd.White)
|
||||
filename = random.choice(images)
|
||||
print("TV drawing image ", filename)
|
||||
free_space = draw_image(filename)
|
||||
#free_space = draw_pattern()
|
||||
draw_extra(free_space)
|
||||
free_space = [0,0,0,0]
|
||||
try:
|
||||
free_space = draw_image(disk.get_root_path() + "/" + filename)
|
||||
except Exception as e:
|
||||
print("Failed drawing image from disk: ", e)
|
||||
try:
|
||||
free_space = draw_image("tiny.bmp")
|
||||
except Exception as e:
|
||||
print("Failed drawing fallback image: ", e)
|
||||
free_space = draw_pattern()
|
||||
caption = None
|
||||
try:
|
||||
caption = load_joke(disk.get_root_path())
|
||||
except Exception as e:
|
||||
print("Failed loading a joke: ", e)
|
||||
try:
|
||||
draw_extra(free_space, caption)
|
||||
except Exception as e:
|
||||
print("Failed drawing extra: ", e)
|
||||
time_render_start = time.ticks_ms()
|
||||
epd.EPD_5IN65F_Display(epd.buffer)
|
||||
time_render_stop = time.ticks_ms()
|
||||
print(" time to render: ", (time_render_stop - time_render_start) / 1000, " s")
|
||||
print("TV showing ", filename)
|
||||
epd.Sleep()
|
||||
disk.umount()
|
||||
|
||||
print("")
|
||||
gc.collect()
|
||||
|
||||
Loading…
Reference in New Issue
Block a user