Search found 1492 matches

by zmemw16
Mon Dec 18, 2017 4:16 pm
Forum: Problems with libraries
Topic: Multiple I2C libraries
Replies: 17
Views: 211

Re: Multiple I2C libraries

it's usual to wrap the contents of an include file in an if-ndef to prevent double inclusion #ifndef _TWOWIRE_H_ #define _TWOWIRE_H_ #include "utility/WireBase.h" #include "wirish.h" #include <libmaple/i2c.h> class TwoWire : public WireBase { private: i2c_dev* sel_hard; uint8 dev_flags; protected: /...
by zmemw16
Sun Dec 17, 2017 1:17 pm
Forum: Problems with libraries
Topic: Multiple I2C libraries
Replies: 17
Views: 211

Re: Multiple I2C libraries

is Wire.h guarded for multiple includes ?

what I2C clock speed is this defaulting too ?

does any of the hardware have regulators, are you feeding them 5v or 3v3 ?

have you got a bus analyzer ?

stephen
by zmemw16
Fri Dec 15, 2017 4:20 pm
Forum: General discussion
Topic: Programmer's Manual?
Replies: 9
Views: 303

Re: Programmer's Manual?

@zmemw16 has written that Introduction to STM32 ARM Microcontroller with STM HAL-Library & SW4STM324 Dec 2017 | Kindle eBook by Kento Watanabe first, it has example code, but the book is currently not searchable. seems the purchased book is searchable or maybe it's just that the kindle unlimited ver...
by zmemw16
Fri Dec 15, 2017 4:06 pm
Forum: Off topic
Topic: Linux Journal
Replies: 41
Views: 614

Re: Linux Journal

pretty sure i pulled that, as i have/had a digital subscription. it was a link after i logged in..
stephen

just looked at that page again. it's not a LJ site, hence the price.
srp
by zmemw16
Fri Dec 15, 2017 12:47 pm
Forum: STM32F103 Boards
Topic: Bluepill: max. voltage on 5V pin?
Replies: 13
Views: 899

Re: Bluepill: max. voltage on 5V pin?

LM7805 comes in many packages, but all capable of only dissipating so much heat.

roughly dropping from 12-14v to 5v, means 7 to 9 * current drawn (mA) mW
make sure you have a sufficiently large heat sink attached.

stephen
by zmemw16
Thu Dec 14, 2017 10:18 pm
Forum: IDE's
Topic: STM acquires Atollic
Replies: 13
Views: 234

Re: STM acquires Atollic

On a similar vein, Segger now allow their Embedded Studio IDE, to be used by Nordic Semi users, completely free, even for commericial. I imagine this will start to hurt Kiel they're showing an Arm version and linux64 ! nothing regarding a Nordic limitation. <OT> istr that udev uses its rule files i...
by zmemw16
Thu Dec 14, 2017 7:30 pm
Forum: IDE's
Topic: STM acquires Atollic
Replies: 13
Views: 234

Re: STM acquires Atollic

i followed the free and unregistered links, followed a couple of routes in to pull the linux version.
both require name, country, an email and a few minor details.
usual disclaimer for details usage is displayed.
stephen
by zmemw16
Mon Dec 11, 2017 7:30 pm
Forum: Ideas & suggestions
Topic: Interesting pull request to add build options
Replies: 19
Views: 236

Re: Interesting pull request to add build options

bricks built on bricks built on bricks, the trick is to realise when to put the roof on +5
srp
by zmemw16
Mon Dec 11, 2017 4:51 am
Forum: Off topic
Topic: First experience review of allpcb, $5 for 100x100mm boards shipped
Replies: 16
Views: 462

Re: First experience review of allpcb, $5 for 100x100mm boards shipped

just tried that link, first time gave me a page not found, rest of page seemed ok, ie pcb capabilities displayed.

2nd time much more sensible opening page, rest seemed functional

srp