<p>Hello guys!<br><br>I have a problem using the AXP202 library. I have a TTGO-T-Beam 1.0 and I am starting to use it in my first micropython project.<br><br>First of all I would like to simply blink the LED and I couldn't do it anymore.<br><br>I'm using VSCode with pymakr and was able to install the esp32_psram_all_bt firmware.<br><br>I would like to use this library: https://github.com/lewisxhe/AXP202_PythonLibrary but I'm not sure how (as I said, it is my first project). I don't know if I need to download and place these files in a specific folder.<br><br>I downloaded these files and put them in a folder and tried to run main.py but this error appeared: OSError: I2C bus error. I don't know what else to do, any help is welcome.<br><br>Thank you very much in advance.<br></p>
Posted by: ph.robadel - 08-13-2020, 02:14 AM - Forum: General
- No Replies
<p data-sourcepos="213:1-213:252" dir="auto"><a href="https://github.com/ph-robadel/ulab_samples" rel="nofollow noreferrer noopener" target="_blank">ulab Samples</a> is a repository with links, examples, benchmarks, etc, about <a href="https://github.com/v923z/micropython-ulab" rel="nofollow noreferrer noopener" target="_blank">ulab module</a>, a NumPy-like array manipulation library for MicroPython and CircuitPython.<br><br></p>
<p data-sourcepos="215:1-215:347" dir="auto">Most interesting is the <a href="https://github.com/ph-robadel/ulab_samples#benchmark-of-fft-with-1024-points" rel="nofollow noreferrer noopener" target="_blank"><strong>ulab FFT benchmark for 1024 points</strong></a>, where you can see, among other boards, the performance of <strong>Sipeed MAix BiT with MicroPython for K210 Lobo firmware</strong> : it <strong>is a clear winner in double precision (FP64) FFT</strong>, taking only <strong>1.030 ms</strong> !</p>
<p data-sourcepos="217:1-217:408" dir="auto">Sipeed MAix BiT with RISC-V 64bit Kendryte K210 has double precision (FP64) float point hardware support, and MicroPython for K210 Lobo firmware is currently only for double precision (FP64). But it would be very useful to have MicroPython for K210 Lobo firmware in two versions, one in single precision (FP32) and another in double precision (FP64), so the K210 microcontroller can show all its performance.<br><br></p>
<p data-sourcepos="219:1-219:100" dir="auto">See more <a href="https://github.com/ph-robadel/ulab_samples#analyses" rel="nofollow noreferrer noopener" target="_blank">comments in ulab Samples repository</a>.</p><p class="sceditor-nlf"><br></p>
<p>I am using <font color="#aaaaaa">MicroPython ESP32_LoBo_v3.2.24 - 2018-09-06 on ESP32 board with ESP32</font> on a TTGO ESP32 TDisplay board. Have modified the example as below to suit the pins. All I get is the back light comes on for a second then goes off. No errors. Have wasted a full day on it so far. Please help..... ripping my hair out.</p><p><br></p><p>
Code:
"""
Demo program demonstrating the capabities of the MicroPython display module
Author: LoBo (https://github/loboris)
Date: 08/10/2017
def testt():
while True:
lastx = 0
lasty = 0
t,x,y = tft.gettouch()
if t:
dx = abs(x-lastx)
dy = abs(y-lasty)
if (dx > 2) and (dy > 2):
tft.circle(x,y,4,tft.RED)
time.sleep_ms(50)
maxx = 135
maxy = 240
miny = 12
touch = False
# fonts used in this demo
fontnames = (
tft.FONT_Default,
tft.FONT_7seg,
tft.FONT_Ubuntu,
tft.FONT_Comic,
tft.FONT_Tooney,
tft.FONT_Minya
)
# Check if the display is touched
#-------------
def touched():
if not touch:
return False
else:
tch,_,_ = tft.gettouch()
if tch <= 0:
return False
else:
return True
# print display header
#----------------------
def header(tx, setclip):
# adjust screen dimensions (depends on used display and orientation)
global maxx, maxy, miny
# Display some fonts
#-------------------
def dispFont(sec=5):
header("DISPLAY FONTS", False)
if maxx < 240:
tx = "MicroPython"
else:
tx = "Hi from MicroPython"
starty = miny + 4
n = time.time() + sec
while time.time() < n:
y = starty
x = 0
i = 0
while y < maxy:
if i == 0:
x = 0
elif i == 1:
x = tft.CENTER
elif i == 2:
x = tft.RIGHT
i = i + 1
if i > 2:
i = 0
for font in fontnames:
if font == tft.FONT_7seg:
tft.font(font)
tft.text(x,y,"-12.45/",machine.random(0xFFFFFF))
else:
tft.font(font)
tft.text(x,y,tx, machine.random(0xFFFFFF))
_,fsz = tft.fontSize()
y = y + 2 + fsz
if y > (maxy-fsz):
y = maxy
if touched():
break
tx = "ESP32-MicrpPython"
n = time.time() + sec
while time.time() < n:
frot = 0
if rot:
frot = math.floor(machine.random(359)/5)*5
for font in fontnames:
if (not rot) or (font != tft.FONT_7seg):
x = machine.random(maxx-8)
if font != tft.FONT_7seg:
tft.font(font, rotate=frot)
_,fsz = tft.fontSize()
y = machine.random(miny, maxy-fsz)
tft.text(x,y,tx, machine.random(0xFFFFFF))
else:
l = machine.random(6,12)
w = machine.random(1,l // 3)
tft.font(font, rotate=frot, dist=l, width=w)
_,fsz = tft.fontSize()
y = machine.random(miny, maxy-fsz)
tft.text(x,y,"-12.45/", machine.random(0xFFFFFF))
if touched():
break
tft.resetwin()
# Display random lines
#-------------------
def lineDemo(sec=5):
header("LINE DEMO", True)
n = time.time() + sec
while time.time() < n:
x1 = machine.random(maxx-4)
y1 = machine.random(miny, maxy-4)
x2 = machine.random(maxx-1)
y2 = machine.random(miny, maxy-1)
color = machine.random(0xFFFFFF)
tft.line(x1,y1,x2,y2,color)
if touched():
break
tft.resetwin()
# Display random circles
#----------------------------------
def circleDemo(sec=5,dofill=False):
tx = "CIRCLE"
if dofill:
tx = "FILLED " + tx
header(tx, True)
n = time.time() + sec
while time.time() < n:
color = machine.random(0xFFFFFF)
fill = machine.random(0xFFFFFF)
x = machine.random(4, maxx-2)
y = machine.random(miny+2, maxy-2)
if x < y:
r = machine.random(2, x)
else:
r = machine.random(2, y)
if dofill:
tft.circle(x,y,r,color,fill)
else:
tft.circle(x,y,r,color)
if touched():
break
tft.resetwin()
x = 110
y = 160
r = 110
z = 0
while z < 12:
color = machine.random(0xFFFFFF)
fill = machine.random(0xFFFFFF)
tft.circle(x,y,r,color,fill)
r -= 10
x += 10
z += 1
# Display random ellipses
#-----------------------------------
def ellipseDemo(sec=5,dofill=False):
tx = "ELLIPSE"
if dofill:
tx = "FILLED " + tx
header(tx, True)
n = time.time() + sec
while time.time() < n:
x = machine.random(4, maxx-2)
y = machine.random(miny+2, maxy-2)
if x < y:
rx = machine.random(2, x)
else:
rx = machine.random(2, y)
if x < y:
ry = machine.random(2, x)
else:
ry = machine.random(2, y)
color = machine.random(0xFFFFFF)
if dofill:
fill = machine.random(0xFFFFFF)
tft.ellipse(x,y,rx,ry,15, color,fill)
else:
tft.ellipse(x,y,rx,ry,15,color)
if touched():
break
tft.resetwin()
n = time.time() + sec
while time.time() < n:
x = machine.random(4, maxx-2)
y = machine.random(miny, maxy-2)
w = machine.random(2, maxx-x)
h = machine.random(2, maxy-y)
color = machine.random(0xFFFFFF)
if dofill:
fill = machine.random(0xFFFFFF)
tft.rect(x,y,w,h,color,fill)
else:
tft.rect(x,y,w,h,color)
if touched():
break
tft.resetwin()
n = time.time() + sec
while time.time() < n:
x = machine.random(2, maxx-18)
y = machine.random(miny, maxy-18)
w = machine.random(12, maxx-x)
h = machine.random(12, maxy-y)
if w > h:
r = machine.random(2, h // 2)
else:
r = machine.random(2, w // 2)
color = machine.random(0xFFFFFF)
if dofill:
fill = machine.random(0xFFFFFF)
tft.roundrect(x,y,w,h,r,color,fill)
else:
tft.roundrect(x,y,w,h,r,color)
if touched():
break
tft.resetwin()
<p>I've been meaning to use in my project sd storage and the ADCs on my Maixduino borad but looks like it's not possible for the esp32 and the sd slot pins are shared.</p><p>I'd like to know if it is possible for me to mount sd through an adaptor on other pins so I can use it all simultaneously.</p><p>And code-wise how should I do it? SPI?</p><p><br></p><p><br></p><p>help please and thanks in advance </p>
<p></p><p class="sceditor-nlf">2. FTP List gets all files info from server. A provision is made to check if a single file exists in server by getting only its attributes and no file body is downloaded.<br> (modified ftp_get to exclude body)<br><br>
</p><p><br></p><p>During start, the function starts once "<!--StartFragment-->callback<!--EndFragment-->()"</p><p><br></p><p>The Prog button (Pin 0) does not respond to
<!--StartFragment-->callback<!--EndFragment--> function.<br></p>
LoBo MicroPython
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