Search found 215 matches
- Mon Apr 04, 2016 4:12 pm
- Forum: Other Boards
- Topic: Micropython v1.6 REPL not working on STM32F429DISC?
- Replies: 3
- Views: 3473
Re: Micropython v1.6 REPL not working on STM32F429DISC?
yes - well hoihu is marfis.. but it is not obvious I agree.
- Thu Mar 31, 2016 9:31 pm
- Forum: Other Boards
- Topic: Porting to STM32L476Discovery/LimiFrog
- Replies: 44
- Views: 41205
Re: Porting to STM32L476Discovery/LimiFrog
Did you manage to support the internal OpAmps as well?
- Sun Mar 27, 2016 11:39 am
- Forum: ESP8266 boards
- Topic: i2c multi-byte read for ESP8266? (e.g. RTC1307)
- Replies: 18
- Views: 15873
Re: i2c multi-byte read for ESP8266? (e.g. RTC1307)
sorry i wrongly assumed it is a true memory mapping i2c sensor whereas it seems to use a register pointer that needs to be written first. So even if memread was present it wouldn't be correct.
Actually I think your code should work. did you check with a logic analyser?
Actually I think your code should work. did you check with a logic analyser?
- Sun Mar 27, 2016 9:04 am
- Forum: ESP8266 boards
- Topic: i2c multi-byte read for ESP8266? (e.g. RTC1307)
- Replies: 18
- Views: 15873
Re: i2c multi-byte read for ESP8266?
for any memory mapped I2C devices you should use readfrom_mem or mem_read.
This handles the correct repeated start transfer conditions after the write of address.
something like
i2c.mem_read(0x68,0,7)
This handles the correct repeated start transfer conditions after the write of address.
something like
i2c.mem_read(0x68,0,7)
- Thu Mar 24, 2016 12:49 pm
- Forum: General Discussion and Questions
- Topic: Learning ExtInt interrupts
- Replies: 3
- Views: 3314
Re: Learning ExtInt... ???
check out the doc:
https://micropython.org/doc/module/pyb/ExtInt
you'll notice that your callback must provide one argument. And in the setup function you have to remove the "()" from call.
https://micropython.org/doc/module/pyb/ExtInt
you'll notice that your callback must provide one argument. And in the setup function you have to remove the "()" from call.
- Thu Mar 24, 2016 12:40 pm
- Forum: Other Boards
- Topic: Micropython v1.6 REPL not working on STM32F429DISC?
- Replies: 3
- Views: 3473
Re: Micropython v1.6 REPL not working on STM32F429DISC?
V1.6 has the USB interrupt concept changed, the VCP HAL driver was configured to use the start-of-frame (SOF) irqs for the rx/tx events instead of TIM3. Mabe that has something to do with it.
- Wed Mar 23, 2016 10:25 pm
- Forum: Hardware Projects
- Topic: SenseHAT with PyBoard
- Replies: 3
- Views: 5676
SenseHAT with PyBoard
Uses the Custom interface board (described http://forum.micropython.org/viewtopic.php?f=5&t=1268 ) to connect a Pyboard with a SenseHAT board (https://www.raspberrypi.org/products/sense-hat/). But you can of course also manually wire the I2C bus, 3V3 and 5V to the SenseHat and avoid the interface bo...
- Wed Mar 16, 2016 2:30 pm
- Forum: WiPy and CC3200 boards
- Topic: SyntaxError: decimal numbers not supported
- Replies: 29
- Views: 30305
Re: SyntaxError: decimal numbers not supported
@jobbyworld: Most likely you can use your sensors with fixed point, see for example https://github.com/micropython/Micropython/pull/1843 and other drivers which implement both fixed point and floating point support. Most of the time the only difference is one line of code. In the link above was also...
- Fri Feb 12, 2016 8:17 am
- Forum: Drivers for External Components
- Topic: TSL2561 Digital Light Sensor
- Replies: 4
- Views: 7864
Re: TSL2561 Digital Light Sensor
Regarding your question about pow() implementation in fixed points arithmetics: My preferred way is to program a generic lookup table function that takes x,y fitting point pairs in a list. Plot your desired formula, choose your fitting points and transfer these to your code. You end up having a simp...
- Fri Feb 12, 2016 7:23 am
- Forum: General Discussion and Questions
- Topic: Optimising Python speed tutorial
- Replies: 7
- Views: 6659
Re: Optimising Python speed tutorial
A really useful and competent writeup. Thanks a lot for sharing.