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> use #ifdef, #ifndef, #endif, #elif, #else ant e.t.c.
Sorry, this don't sound good. If a new target is added, say LPC21xx controllers - then I'll need to add another #ifdef to core files... This don't sound better than existing mess...
It seems I failed to make it clear. This header file obviously should be different for different compilers, while "core files" are the same. I can't include 3-4 platform-dependent header files there...
Hi Friends!
In my project firmware is supposed to be compiled from C for several platforms (now Arduino, STM32 and javascript emulator). I want to figure out the convenient way to allow two arrays have different size on different platforms. :-?
Here are details (sorry for many letters below) -...
I thank you for very clear explanation. Finaly I find that I could however include two transistors at antenna coils of the slave device - the purpose is to short-circuit this coils like the way the card do it. I even found some paper in which two guys described their experience of emulating...
rfid reader schematics
Hello!
Why do you need "many" sources? What reader chip and what cards do you plan to use? Around the chip as a matter of fact there is only:
- interface to MCU;
- up and down pullers to select interface (if it is selectable);
- antenna part;
All these are covered with...
Aha... Thank you for explanation. But my first idea was that if I do not need to work with a card (since transfer goes between two my own-made devices) I need not to keep ISO-14443 standard. I could use UART from microcontroller attached to MFIN and MFOUT pins of the reader, so that carrier...
Dear friends!
The question is about NXP Mifare readers (primarily about MF RC531 or MFRC522), about RFID-technology.
Is there a way to exchange information between two readers directly, when their antennas are close enough?
The idea is that I have big immovable devices (vending machines)...
Dear friends!
I slowly come to think that I need to try some RTOSes. Currently I am developing mostly for 51 MCUs (for SiLabs's).
I found RTX51Tiny and RTX51Full in Keil and before I start I want to ask your possible advices for this or other OSes.
May be you can give me a link to some...
Dear Friends!
Could please anyone be so kind to answer the following question?
We are trying to drive 7-segment LED-indicator with the microcontroller (SiLabs C8051F314). It is a big indicator and it need more than 6 Volts when lit. So we attached it with its common anode to +12 bus and all...
Dear friends!
I am building MF RC531 based RFID-reader and using cards MF1 MOA2 S50 (i.e. MIFARE 1k classic, as I understand).
I sent REQA and received ATQA.
I sent SEL without UID and received UID.
I sent SEL with UID and received SAK=08.
So this card is ACTIVE now, but it do not support ISO...
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