Where do I put in the CHPROPS?
Should I put it in sitepackages and import it in the beginning of the code?
Keep getting “CHPROPS” is not defined no matter where in the code I put it in.
Thx again for the help!
Welcome!
This is the community forum for my apps Pythonista and Editorial.
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Where do I put in the CHPROPS?
Should I put it in sitepackages and import it in the beginning of the code?
Keep getting “CHPROPS” is not defined no matter where in the code I put it in.
Thx again for the help!
Ok thx for your help I get the full readout now
Listing all services and characteristics
Now I want to get the raw values of all the sensors and print them.
You talked about setting up a semafore system?
I am totally new to this can you explain more in-depth please?
The code till now:
import cb
import time
class HexiwearManager (object):
def __init__(self):
self.peripheral = None
def did_discover_peripheral(self, p):
if p.name and 'HEXIWEAR' in p.name and not self.peripheral:
self.peripheral = p
print('Connecting to Hexiwear...')
cb.connect_peripheral(p)
def did_connect_peripheral(self, p):
print('Connected:', p.name)
print('Discovering services...')
p.discover_services()
def did_discover_services(self, p, error):
print('did_discover_services({})'.format(p.name))
cb.get_state()
print("Name:", p.name)
print("UUID:", p.uuid)
try:
state = 'Disconnected Connecting Connected'.split()[p.state]
except IndexError:
state = 'Invalid state ({})'.format(p.state)
print("STAT: ", state)
time.sleep(0.4)
print("AUTH:", cb.CH_PROP_AUTHENTICATED_SIGNED_WRITES)
time.sleep(0.4)
print("Properties:", cb.CH_PROP_EXTENDED_PROPERTIES)
time.sleep(0.4)
print("Indicate:", cb.CH_PROP_INDICATE)
time.sleep(0.4)
print("Encryption:", cb.CH_PROP_NOTIFY_ENCRYPTION_REQUIRED)
time.sleep(0.4)
print("{} Services:".format(len(p.services)))
for s in p.services:
print("-" + str(s.uuid))
p.discover_characteristics(s)
def did_discover_characteristics(self, s, error):
print("{} Characteristics:".format(len(s.characteristics)))
for c in s.characteristics:
print("-" + str(c.uuid))
def did_fail_to_connect_peripheral(self, p, error):
print('Failed to connect: %s' % (error,))
def did_disconnect_peripheral(self, p, error):
print('Disconnected, error: %s' % (error,))
self.peripheral = None
mngr = HexiwearManager()
cb.set_central_delegate(mngr)
print('Scanning for Hexiwear...')
cb.scan_for_peripherals()
try:
while True: pass
except KeyboardInterrupt:
cb.reset() ```
Well almost now I am getting just the first characteristic of each service but getting closer.
Thx a bunch!
I just can’t get access to the other services
Thx for the help guys...
Need some help with access to BLE services & characteristics with the Hexiwear dev platformpje !?
from __future__ import print_function
import cb
import sound
import time
import struct
import console
console.set_color(0, 0, 1)
print("""
_ _ _____ _
| || |___ _ _ * | __ | |_ _ ___
| -- | -_| \/ | | __ -| | | | -_|
|_||_|___|_/\__|_ _____|_|___|___|
""")
console.set_color()
class HeartRateManager (object):
def __init__(self):
self.peripheral = None
def did_discover_peripheral(self, p):
if p.name and 'HEXIWEAR' in p.name and not self.peripheral:
self.peripheral = p
print('Connecting to Hexiwear...')
cb.connect_peripheral(p)
def did_connect_peripheral(self, p):
print('Connected:', p.name)
print('Discovering services...')
p.discover_services()
def did_discover_services(self, p, error):
print('did_discover_services({})'.format(p.name))
cb.get_state()
print("Name:", p.name)
print("UUID:", p.uuid)
try:
state = 'Disconnected Connecting Connected'.split()[p.state]
except IndexError:
state = 'Invalid state ({})'.format(p.state)
print("STAT: ", state)
time.sleep(0.4)
print("AUTH:", cb.CH_PROP_AUTHENTICATED_SIGNED_WRITES)
time.sleep(0.4)
print("Properties:", cb.CH_PROP_EXTENDED_PROPERTIES)
time.sleep(0.4)
print("Indicate:", cb.CH_PROP_INDICATE)
time.sleep(0.4)
print("Encryption:", cb.CH_PROP_NOTIFY_ENCRYPTION_REQUIRED)
time.sleep(0.4)
print("{} Services:".format(len(p.services)))
for s in p.services:
print("-" + str(s.uuid))
p.discover_characteristics(s)
def did_discover_characteristics(self, s, error):
print("Characteristics:")
for c in s.characteristics:
print("-" + str(c.uuid))
# s.set_notify_value(c, True)
s.read_characteristic_value(c)
data = s.read_characteristic_value(c)
print(c.value, data)
def did_write_value(self, c, error):
print(self.peripheral.properties)
time.sleep(0.5)
def did_update_value(self, c, error):
time.sleep(0.5)
def did_fail_to_connect_peripheral(self, p, error):
print('Failed to connect: %s' % (error,))
def did_disconnect_peripheral(self, p, error):
print('Disconnected, error: %s' % (error,))
self.peripheral = None
mngr = HeartRateManager()
cb.set_central_delegate(mngr)
print('Scanning for Hexiwear...')
cb.scan_for_peripherals()
try:
while True: pass
except KeyboardInterrupt:
cb.reset()
Can’t get access to all characteristics need some pointers!?
Thx in advance
@mikael Yes thx for pointing that out to me did so and is so much better👍🏻
How can i prefill a textfield with strings and variables combined?
This code gets me an expected string error:
if delta.degrees < 0:
sometext = ('B:', int(delta.degrees + 360), 'D:', int(delta.magnitude))
else:
sometext = ('B:', int(delta.degrees), 'D:', int(delta.magnitude))
tv['textfield1'].text = sometext
What am i doing wrong?
@ccc
Ok thx for pointing that out to me i will chance it.👍🏻
Ok no worries Bumbo i am also a beginner in python and it is a great code language.
Its easy to read and understand and with a great communitie very helpfull.
I managed to create something awesome and usefull in a short time thx to that.
I'll show you my progress so you can see:
import math
import ui
import console
import photos
import matplotlib.pyplot as plt
import numpy as np
from io import BytesIO
class Vector(list):
abs_tol = 1e-10
def __init__(self, *args, **kwargs):
x = kwargs.pop('x', None)
y = kwargs.pop('y', None)
if x and y:
self.append(x)
self.append(y)
elif len(args) == 2:
self.append(args[0])
self.append(args[1])
else:
super().__init__(*args, **kwargs)
@property
def x(self):
''' x component of the vector. '''
return self[0]
@x.setter
def x(self, value):
self[0] = value
@property
def y(self):
''' y component of the vector. '''
return self[1]
@y.setter
def y(self, value):
self[1] = value
def __eq__(self, other):
return math.isclose(
self[0], other[0], abs_tol=self.abs_tol) and math.isclose(
self[1], other[1], abs_tol=self.abs_tol)
def __ne__(self, other):
return not self.__eq__(other)
def __abs__(self):
return type(self)(abs(self.x), abs(self.y))
def __int__(self):
return type(self)(int(self.x), int(self.y))
def __add__(self, other):
return type(self)(self.x + other.x, self.y + other.y)
def __iadd__(self, other):
self.x += other.x
self.y += other.y
return self
def __sub__(self, other):
return type(self)(self.x - other.x, self.y - other.y)
def __mul__(self, other):
return type(self)(self.x * other, self.y * other)
def __truediv__(self, other):
return type(self)(self.x / other, self.y / other)
def __len__(self):
return self.magnitude
def __round__(self):
return type(self)(round(self.x), round(self.y))
def dot_product(self, other):
''' Sum of multiplying x and y components with the x and y components of another vector. '''
return self.x * other.x + self.y * other.y
def distance_to(self, other):
''' Linear distance between this vector and another. '''
return (Vector(other) - self).magnitude
@property
def magnitude(self):
''' Length of the vector, or distance from (0,0) to (x,y). '''
return math.hypot(self.x, self.y)
@magnitude.setter
def magnitude(self, m):
r = self.radians
self.polar(r, m)
@property
def radians(self):
''' Angle between the positive x axis and this vector, in radians. '''
#return round(math.atan2(self.y, self.x), 10)
return math.atan2(self.y, self.x)
@radians.setter
def radians(self, r):
m = self.magnitude
self.polar(r, m)
def polar(self, r, m):
''' Set vector in polar coordinates. `r` is the angle in radians, `m` is vector magnitude or "length". '''
self.y = math.sin(r) * m
self.x = math.cos(r) * m
@property
def degrees(self):
''' Angle between the positive x axis and this vector, in degrees. '''
return math.degrees(self.radians)
@degrees.setter
def degrees(self, d):
self.radians = math.radians(d)
def steps_to(self, other, step_magnitude=1.0):
""" Generator that returns points on the line between this and the other point, with each step separated by `step_magnitude`. Does not include the starting point. """
if self == other:
yield other
else:
step_vector = other - self
steps = math.floor(step_vector.magnitude / step_magnitude)
step_vector.magnitude = step_magnitude
current_position = Vector(self)
for _ in range(steps):
current_position += step_vector
yield Vector(current_position)
if current_position != other:
yield other
def rounded_steps_to(self, other, step_magnitude=1.0):
''' As `steps_to`, but returns points rounded to the nearest integer. '''
for step in self.steps_to(other):
yield round(step)
bearingblue = int(input("Bearing blue: "))
rangeblue = int(input("Range blue: "))
bearingred = int(input("Bearing red: "))
rangered = int(input("Range red: "))
blue = Vector(rangeblue, 0)
blue.degrees = bearingblue
red = Vector(rangered, 0)
red.degrees = bearingred
delta = red - blue
way = np.loadtxt('waypoints.txt')
ways = way[:, 0]
r = way[:, 1]
if delta.degrees < 0:
print('Bearing: ', int(delta.degrees + 360))
print('Distance:', int(delta.magnitude))
else:
print('Bearing: ', int(delta.degrees))
print('Distance:', int(delta.magnitude))
thetablue= np.deg2rad(bearingblue)
thetared= np.deg2rad(bearingred)
thetawayp= np.deg2rad(ways)
class PathView(ui.View):
def __init__(self, frame):
self.frame = frame
self.flex = 'WH'
self.path = None
self.action = None
def touch_began(self, touch):
x, y = touch.location
self.path = ui.Path()
self.path.line_width = 1
self.path.line_join_style = ui.LINE_JOIN_ROUND
self.path.line_cap_style = ui.LINE_CAP_ROUND
self.path.move_to(x, y)
def touch_moved(self, touch):
x, y = touch.location
self.path.line_to(x, y)
self.set_needs_display()
def touch_ended(self, touch):
# Send the current path to the SketchView:
if callable(self.action):
self.action(self)
# Clear the view (the path has now been rendered
# into the SketchView's image view):
self.path = None
self.set_needs_display()
def draw(self):
if self.path:
self.path.stroke()
ax = plt.subplot(111, projection='polar')
plt.polar(thetawayp, r)
plt.polar(thetawayp, r, 'k.', zorder=3)
ax.scatter(thetablue,rangeblue)
ax.scatter(thetared,rangered, color='r')
ax.set_theta_direction(-1)
ax.set_rmax(120)
ax.set_theta_zero_location('N')
ax.set_title("N ", va='bottom')
ax.grid(True)
b = BytesIO()
plt.savefig(b)
class SketchView(ui.View):
def __init__(self, width=768, height=768):
self.bg_color = '#ffffff'
iv = ui.ImageView(frame=(0, 0, width, height))
bg = ui.Image.from_data(b.getvalue())
iv.image = bg
iv.content_mode = ui.CONTENT_SCALE_ASPECT_FILL
image_view = ui.ImageView()
image_view.image = ui.Image.named('Bullseye.png')
image_view.present()
pv = PathView(frame=self.bounds)
pv.action = self.path_action
self.add_subview(iv)
self.add_subview(pv)
blue_button = ui.ButtonItem()
blue_button.title = 'Bluebulls'
blue_button.action = self.bluebulls_action
red_button = ui.ButtonItem()
red_button.title = 'Redbulls'
red_button.tint_color = '#990000'
red_button.action = self.redbulls_action
maps_button = ui.ButtonItem()
maps_button.title = 'Maps'
maps_button.tint_color = '#000d99'
maps_button.action = self.map_action
save_button = ui.ButtonItem()
save_button.title = 'Save Image'
save_button.action = self.save_action
plot_button = ui.ButtonItem()
plot_button.title = 'Plot'
plot_button.tint_color = '#000d99'
plot_button.action = self.plot_action
clear_button = ui.ButtonItem()
clear_button.title = 'Clear'
clear_button.tint_color = '#af0000'
clear_button.action = self.clear_action
self.right_button_items = [save_button, plot_button, red_button]
self.left_button_items = [clear_button, maps_button, blue_button]
self.image_view = iv
def map_action(self, sender):
# Show an image picker dialog (allowing multiple selection) and print the result
assets = photos.pick_asset(title='Pick a Map', multi=True)
def path_action(self, sender):
path = sender.path
old_img = self.image_view.image
width, height = 768, 768
with ui.ImageContext(width, height) as ctx:
if old_img:
old_img.draw()
path.stroke()
self.image_view.image = ctx.get_image()
def redbulls_action(self, sender):
m=1
def bluebulls_action(self, sender):
m=1
def plot_action(self, sender):
self.image_view.image = ui.Image.from_data(b.getvalue())
def clear_action(self, sender):
self.image_view.image = None
def save_action(self, sender):
if self.image_view.image:
# We draw a new image here, so that it has the current
# orientation (the canvas is quadratic).
with ui.ImageContext(self.width, self.height) as ctx:
self.image_view.image.draw()
img = ctx.get_image()
photos.save_image(img)
console.hud_alert('Saved')
else:
console.hud_alert('No Image', 'error')
sv = SketchView()
sv.name = 'BullseyePad'
sv.present()
Its starting to look like an useable app already👍🏻
I am looking into API's right Now not so hard to use and lots of them look it up.
Maybe you can find a nice project for u with the use of API's
Goodluck finding a Nice project!