MicroPython Forum

ernitron

This is almost a FAQ ;) The symptoms are pretty clear: your chip goes into a rebooting loop (that's why it blinks continuously and you see a lot of garbage on uart whatever speed you set). The cause most probably, is because esptool.py flashed a WeMos D1 Mini Pro with 4m but it has 128mb (16MB) flas...

ernitron

Bonus. The corrected read_temp()

Code: Select all

def read_temp(self):
     t = self.read_register(self.T_REG)
     temp = ((t[0] << 8 | t[1]) >> 4)
     if temp & 0x800: # sign bit set
         temp = -((temp ^ 0xfff) + 1)
     return temp * 0.0625

ernitron

It looks like (but I can be wrong as I don't have a TMP100) you didn't consider the negative values. According to specs negative are represented as twos complement with msb set. Check the code for ds18b20. Test it putting your sensor in the refrigerator ;) Besides, I would have called read_temp() te...

ernitron

from an HTTP server is possible get the body of a POST HTTP request? the example i found are only with GET. thanks Hi, I use something like: while True: try: self.conn, self.addr = self.socket.accept() req = self.conn.readline() except KeyboardInterrupt: raise OSError('Interrupt') except Exception ...

ernitron

Following this and other discussions that show that a higher frequency can be achieved in toggling pin, I was just wondering why there is the 1khz limit on PWM for ESP8266. It is only the current implementation or there are other issues?
Thanks

ernitron

Sorry guys, I was on vacation and just read your follow ups. I confirm that the relay I am using has NPN and diode-led. Besides I have realized few of this wifi-switches (look at picture in my previous post) and they work just fine. Tested with hundreds of toggles so far with very stable ESP and re...

ernitron

Check the topic on sound in here and the reply of pythoncoder. There was a contest on how fast a pin could be set. I am on my mobile and cannot get the link but you can easily find there.

Edit: found
http://forum.micropython.org/viewtopic.php?f=2&t=1349

ernitron

You may want to checkout: http://forum.micropython.org/viewtopic.php?f=14&t=2172&p=12291 I just translated into esp/machine language your pyb_test. The rest is pretty portable... It's a pity the 1000Hz limit of the PWM on ESP. Besides I hope I've made it right. (The only audible song is TopGun Them...

ernitron

Hi @fdushin, I had a look at your http server framework and it's amazing. I am impressed, really. I developed my own and it's ugly (I know) but it makes its job and it's extremely compact. But the temptation to use an elegant, robust and versatile httpd framework is huge. For my purposes this is som...

ernitron

I solved it! This is the ONE LINE solution. --- esp8266/uart.c 2016-12-09 16:16:43.936221129 +0100 +++ esp8266/uart.c.original 2016-12-09 11:06:36.377927859 +0100 @@ -171,7 +171,6 @@ while (READ_PERI_REG(UART_STATUS(uart_no)) & (UART_RXFIFO_CNT << UART_RXFIFO_CNT_S)) { uint8 RcvChar = READ_PERI_REG(...

MicroPython Forum

Search found 84 matches

Re: Flashing micropython on Wemos D1 Mini Pro

Re: TMP100 library - Please critique

Re: TMP100 library - Please critique

Re: POST on HTTP Server

Re: Making sounds

Re: RE: Re: Power supply control

Re: Pin Toggle Performance

Re: Making sounds

Re: Simple HTTP framework

Re: Using the tx/rx pins not for UART