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Hello All and thanks for the replies...
Instead of buying i wanted to use the mobile phones laying around in the house ..
@Brain as you mentioned, i can hook up UART Rx and Tx to the GSM Module and communicate with the AT commands.
I shall try and come back if i need more assistance...
Hello All
Am trying to communicate microcontroller to an GSM module.
Instead of buying an GSM Module ( SIM300 or SIM900) want to use an old mobile phone with AT commands.
Need an suggestion about which mobile can be used and the AT commands..
Found weblinks in the same fourm
Below uses...
Hello All
After some basic understanding of Embedded systems and C programming am now going for a hands on. I managed to buy msp432p401r from TI ( After viewing few blogs decided to buy this).
Please can any one suggest me how to start with hardware in hand.
I was thinking to
- Read the...
Just browsed it on digikey for 125khz rifd readers.. found few and below is the link you can order..
https://www.digikey.co.uk/product-search/en?pv236=297&pv139=600&FV=fff40036%2Cfff802b6&mnonly=0&newproducts=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pageSize=25
Hello igeroge
Before answering your question can i know what exactly you are looking for ??
1. Is it LF, HF or UHF you are looking for to read as a tag?
2. What exactly your read range needs to be ??
There are few in TI you can look at . TRF7970( RFID and NFC chip) etc...
Hope this helps
One main point to consider to increase the read range is to Increase the power and increase the size of passive tag.
There could be something like Power Amplifiers to increase the input power. ( can look into examples online depending on the controller and the circuits you are using)
Increase...
I worked on NFC which works on IEC 14443 protocol and uses 13.56MHz.
Hardware used was MSP430 and used TRF7970 as RF chips. I could program that it can read upto 16 tags . But we can still program and set it according to our requirements.
Datasheet for the chip you are using as RF...
"Target not found" could mean a lot of possible issues like a faulty ICD3 hardware, pins shorted to ground on the PIC controller etc..
To program the PIC controller the ICD3 provides the needed power.
I am not an expert but i did some work on HF (13.56MHz)
How big is your antenna?? What frequency are you using to implement ? How are the Passive tags aligned??
I think the above questions are important for figuring out how to proceed. If you know the alignment and frequency you work on then...
The only way to test if the CAN protocol is working fine is to use CANalyzer. You can google it and is available to buy as well..
https://vector.com/vi_canalyzer_en.html
For connecting and seeing the information on CAN you need to have CANalyzer.
CAN can work in a network which has minimum of 2 nodes with max speed of 1MB/s. You need to define each node in the code.
For a CAN pin 2 is CAN and pin7 is CANH.
You can directly connect the pin out from CAN on...
I have got exactly what you might be looking for... look at the below link from microchip
https://www.cl.cam.ac.uk/research/srg/han/Lambda/webdocs/an215b.pdf
this talks about a PIC but you can use unused free pins from the LPC2148.
Do let me know if u have any difficulty in understanding ...
((uint16_t)0x0000)
With the above line you mention that it is a 16 bit value i.e 2Bytes.
You are typecasting the value to a 16bit where you have only assigned 4bits. Remaining bits are set to zero by type casting as above.
For second question :
There is a called function and calling...
I havent really gone through the datasheet for LPC2148 but i can say that the chip hasnt got the built in CAN controller.
You can use any CAN controller using SPI bus and connect to an CAN transceiver.
Try using MCP2510 as CAN controller and TJA1042 as CAN transceiver.
uc--> MCP2510 -->...
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