Error in the PyScan Pinout document

[gael cobert]

@robert-hh ok thank you so much for your help :) i learned a lot of things indeed. See you tomorrow.

[robert-hh]

@gael-cobert Could not give it a rest, so I made a shot. This setting worked, all on the camera connector:

import epaper4in2
from machine import Pin, SPI

# SPIV on ESP32
sck = "P9"
miso = None
mosi = "P10"
dc = Pin("P3", Pin.OUT)
cs = Pin("P19", Pin.OUT)
rst = Pin("P11", Pin.OUT, value=1)
busy = Pin("P15", Pin.IN)
spi = SPI(0, baudrate=20000000, polarity=0, phase=0, pins=(sck, mosi, None))

e = epaper4in2.EPD(spi, cs, dc, rst, busy)
e.init()

w = 400
h = 300
x = 0
y = 0

# --------------------

# use a frame buffer
# 400 * 300 / 8 = 15000 - thats a lot of pixels
import framebuf
buf = bytearray(w * h // 8)
fb = framebuf.FrameBuffer(buf, w, h, framebuf.MONO_HLSB)
black = 0
white = 1
fb.fill(white)
print('print hello world')
fb.fill(white)
fb.text('Hello World',30,0,black)
e.display_frame(buf)

The only problem that I had was the USB of the pyscan. I never used it before, and so the driver needed am update. I skipped that and connected with telnet.

[gael cobert]

@robert-hh said in Error in the PyScan Pinout document:

sck = "P9"
miso = None
mosi = "P10"
dc = Pin("P3", Pin.OUT)
cs = Pin("P19", Pin.OUT)
rst = Pin("P11", Pin.OUT, value=1)
busy = Pin("P15", Pin.IN)
spi = SPI(0, baudrate=20000000, polarity=0, phase=0, pins=(sck, mosi, None))

did you try it with a piscan ? i changed my code with your example but not change ... i changed P8 to P11
I changed other pin

https://drive.google.com/file/d/12dhAIFz4ND_cvRy4eSzi3o79BKnx_9EB/view?usp=sharing

[robert-hh]

@gael-cobert Yes. I used Pyscan for that. The same 0.7 version that you have. with long male/male adapter pins.
If that does not work, the problem may be somewhere else.

[gael cobert]

@robert-hh P11 is to the left of P13 ?

https://drive.google.com/file/d/12uRecBvZEub8N-LTEvIxTz0T2M0FdGH_/view?usp=sharing

can you give me a photo of your board ?

[gael cobert]

@robert-hh said in Error in the PyScan Pinout document:

import epaper4in2
from machine import Pin, SPI

SPIV on ESP32

sck = "P9"
miso = None
mosi = "P10"
dc = Pin("P3", Pin.OUT)
cs = Pin("P19", Pin.OUT)
rst = Pin("P11", Pin.OUT, value=1)
busy = Pin("P15", Pin.IN)
spi = SPI(0, baudrate=20000000, polarity=0, phase=0, pins=(sck, mosi, None))

e = epaper4in2.EPD(spi, cs, dc, rst, busy)
e.init()

w = 400
h = 300
x = 0
y = 0

--------------------

use a frame buffer

400 * 300 / 8 = 15000 - thats a lot of pixels

import framebuf
buf = bytearray(w * h // 8)
fb = framebuf.FrameBuffer(buf, w, h, framebuf.MONO_HLSB)
black = 0
white = 1
fb.fill(white)
print('print hello world')
fb.fill(white)
fb.text('Hello World',30,0,black)
e.display_frame(buf)

it works !!!!!!!!

[robert-hh]

@gael-cobert Wonderful. Although the display update times are pretty long. So it's more suited for signs.

[gael cobert]

@robert-hh yes do you know why it's so long ? ( around 3 sec )

i have another question, i am using atom IDE, i want to use the NFC scan, but sometimes it stop, if i click "run selected files"
if i transfer main.py file via FTP it don't seem to execute when the board start, it's a little bit strange

import epaper4in2
from machine import Pin, SPI

# NFC

from pyscan import Pyscan
from MFRC630 import MFRC630
from LIS2HH12 import LIS2HH12
from LTR329ALS01 import LTR329ALS01
import binascii
import time
import pycom
import _thread

ttf_dir = 'ttf' 
# var NFC
# This is the default key for an unencrypted MiFare card
DEBUG = True  # change to True to see debug messages


VALID_CARDS = [[0x43, 0x95, 0xDD, 0xF8],
               [0x43, 0x95, 0xDD, 0xF9],
               [0x8C, 0x43, 0x00, 0x5C],
               [0x46, 0x5A, 0xEB, 0x7D, 0x8A, 0x08, 0x04]]

 
py = Pyscan()
nfc = MFRC630(py)
lt = LTR329ALS01(py)
li = LIS2HH12(py)

RGB_BRIGHTNESS = 0x8

RGB_RED = (RGB_BRIGHTNESS << 16)
RGB_GREEN = (RGB_BRIGHTNESS << 8)
RGB_BLUE = (RGB_BRIGHTNESS)

counter = 0

# SPIV on ESP32
sck = "P9"
miso = None
mosi = "P10"
dc = Pin("P3", Pin.OUT)
cs = Pin("P19", Pin.OUT)
rst = Pin("P11", Pin.OUT, value=1)
busy = Pin("P15", Pin.IN)
spi = SPI(0, baudrate=20000000, polarity=0, phase=0, pins=(sck, mosi, None))

e = epaper4in2.EPD(spi, cs, dc, rst, busy)
e.init()

w = 400
h = 300
x = 0
y = 0

# --------------------

# use a frame buffer
# 400 * 300 / 8 = 15000 - thats a lot of pixels
import framebuf
buf = bytearray(w * h // 8)
fb = framebuf.FrameBuffer(buf, w, h, framebuf.MONO_HLSB)
black = 0
white = 1
fb.fill(white)
print('print hello world')
fb.fill(white)
fb.text('bienvenue sur le système secureangel',30,0,black)
e.display_frame(buf)






# Make sure heartbeat is disabled before setting RGB LED
pycom.heartbeat(False)

# Initialise the MFRC630 with some settings
nfc.mfrc630_cmd_init()


def check_uid(uid, len):
    return VALID_CARDS.count(uid[:len])

def print_debug(msg):
    if DEBUG:
        print(msg)

def send_sensor_data(name, timeout):
    while(True):
        print(lt.light())
        print(li.acceleration())
        time.sleep(timeout)

def discovery_loop(nfc, id):
    while True:
        # Send REQA for ISO14443A card type
        print_debug('Sending REQA for ISO14443A card type...')
        atqa = nfc.mfrc630_iso14443a_WUPA_REQA(nfc.MFRC630_ISO14443_CMD_REQA)
        print_debug('Response: {}'.format(atqa))
        if (atqa != 0):
            # A card has been detected, read UID
            print_debug('A card has been detected, read UID...')
            uid = bytearray(10)
            uid_len = nfc.mfrc630_iso14443a_select(uid)
            print_debug('UID has length: {}'.format(uid_len))
            if (uid_len > 0):
                s =  binascii.hexlify(uid[:uid_len],' ').upper()
                card_id = ("{:02X}"*len(s)).format(*s)
                print_debug('card_id : -> {} <-'.format(card_id))
                tst = s.decode("utf-8") 
                print_debug('tst : {} <-'.format(tst))

                 
                if(tst == "8C 43 00 5C") :
                    print_debug('hello gael')
                    fb.fill(white)
                    fb.text('Hello Gaël ! :)',30,80,black)
                    e.display_frame(buf)
                
                print_debug('Checking if card with UID: [{:s}] is listed in VALID_CARDS...'.format(binascii.hexlify(uid[:uid_len],' ').upper()))
                if (check_uid(list(uid), uid_len)) > 0:
                    print_debug('Card is listed, turn LED green')
                    pycom.rgbled(RGB_GREEN)
                else:
                    print_debug('Card is not listed, turn LED red')
                    pycom.rgbled(RGB_RED)
                    fb.fill(white)
                    fb.text('carte introuvable :p',30,0,black)
                    e.display_frame(buf)
                    
        else:
            # No card detected
            #print_debug('Did not detect any card...')
            pycom.rgbled(RGB_BLUE)
        nfc.mfrc630_cmd_reset()
        time.sleep(.5)
        nfc.mfrc630_cmd_init()

# This is the start of our main execution... start the thread
_thread.start_new_thread(discovery_loop, (nfc, 0))
_thread.start_new_thread(send_sensor_data, ('Thread 2', 10))

[robert-hh]

@gael-cobert I cannot tell anything about the Pycom IDE with either Atom or VSCode. The seem to fail constantly.
I prefer to use primitive tools, like picocom | putty | beagle term for REPL, and plain ftp | filezilla or in the absence of wifi pyboard.py + mpr.py for file transfer.

[Gijs]

@robert-hh You are correct, Im not sure yet how they messed it up, but it seems to be a mirrorring issue. From what I see, the connector is labeled from the top view, but the square pad is definitely connected to GND, instead of PWR_EN

I'll make sure it gets fixed, thanks!