Search found 1213 matches

by martinayotte
Mon Sep 11, 2017 8:03 pm
Forum: Postbag
Topic: FRAM FM24C256 from RAMTRON
Replies: 17
Views: 330

Re: FRAM FM24C256 from RAMTRON

victor_pv wrote:
Mon Sep 11, 2017 5:59 pm
Those FM25V10 look interesting, have you done anything with them yet?
Not really other real things except making the tweak to the library.
by martinayotte
Mon Sep 11, 2017 4:26 pm
Forum: Postbag
Topic: FRAM FM24C256 from RAMTRON
Replies: 17
Views: 330

Re: FRAM FM24C256 from RAMTRON

I don't know if this one would work with FRAM, but I usually use that one for EEPROM : https://github.com/JChristensen/extEEPROM BTW, last summer, MrBurnette gave me few FRAM samples he got, but they were SPI FM25V10, for those ones, I've updated SPIFlash from LowPowerLab, I've sent them a PR, but t...
by martinayotte
Mon Sep 11, 2017 4:11 pm
Forum: General discussion
Topic: [POLL (Open)] Blocking behaviour of Serial.USB during TX
Replies: 21
Views: 440

Re: [POLL (Open)] Blocking behaviour of Serial.USB during TX

Right !
That is what I've said in the other thread several weeks ago.
usbEnableBlockingTx() could have a new argument for the timeout value, and 0 or -1 can indicate blocking forever...
by martinayotte
Sat Sep 09, 2017 1:54 pm
Forum: STM32F103 Boards
Topic: A board slightly different from the Blue Pill
Replies: 21
Views: 1774

Re: A board slightly different from the Blue Pill

The above board variant provided by umeshjayan is slightly different than common BluePill, it has only 1 BOOT jumper instead of 2...
by martinayotte
Thu Sep 07, 2017 9:10 pm
Forum: Libraries & Hardware
Topic: [NOT SUPPORTED] I2C on GD32F103C8T6
Replies: 4
Views: 102

Re: I2C on GD32F103C8T6

Do you have PullUps on both SDA/SCL ?
by martinayotte
Thu Sep 07, 2017 9:06 pm
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: Welcome to our new members !
Replies: 8
Views: 946

Re: Welcome to our new members !

KevinA wrote:
Thu Sep 07, 2017 8:24 pm
Small World - Nice to see you've expanded martinayotte
What do you mean ?

EDIT : Do you mean TekSystem in 2009 ?
by martinayotte
Wed Sep 06, 2017 9:27 pm
Forum: USB to Serial adaptors
Topic: Problem programming Blue Pill using an Arduino Mega
Replies: 14
Views: 274

Re: Blue Pill - Error trying to program

Did you attached STM on the same serial port of the of the USB ?
If so, did you upload in the Mega a small sketch that turn Mega TX pin as an input ?
If not, you have 2 TXs (the one from Mega and the one from STM) fighting each other ... :ugeek:
by martinayotte
Wed Sep 06, 2017 6:29 pm
Forum: General discussion
Topic: New to STM32 and projects on it
Replies: 17
Views: 294

Re: New to STM32 and projects on it

If the gearing ratio is high, maybe placing the encoder/sensor on motor side would be easier.
And it will provide a better accuracy ...
by martinayotte
Wed Sep 06, 2017 2:08 pm
Forum: General discussion
Topic: Graphing calculator feat. STM32F412VGT6
Replies: 25
Views: 536

Re: Beautiful graphing calculator feat. STM32F412VGT6

I have one of those Friden calcultors.
It was working several years ago, but not anymore : I need to find which transistors had broken, but too lazy ...
Image
by martinayotte
Mon Sep 04, 2017 8:59 pm
Forum: Off topic
Topic: Counterfeit F103s
Replies: 19
Views: 393

Re: Counterfeit F103s

Having chips reporting 128K doesn't means they are clone. In this forums, many of us discovered that a while ago. We suspect that ST is using the same die for CB and C8, but, during testing, they mark it C8 if some of the flash cells on the second 64K reports some errors. When you will get some F103...