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Hello,
I am reading the data from the rfid reader via Arduino Mega and sending it to pc.
But when the data is read by the pc, in the end some unwanted characters appear(mostly smileys). I have defined an array of 15 but when I use strlen function to check the length of the data received, then...
I have made the following circuit using atmega162.
Here, when RFID reader detects a tag,the data is sent from the reader to the MCU via usart 0,in interrupt mode.
Then this data is sent to server using GSM serially. GSM is connected to UART 1. Afterwards, server transmits a data via GSM to MCU...
The baud rate is mentioned in the UBRR.
Is there anything that has to be programmed besides this?
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I removed the Max232. Now the same error appears at the Tx pin on MCU and Rx of GSM.
I have made the following circuit where I have interface RFID and GSM with atmega16 using a MUX.
During simulation, I am getting "Logic contention detected " at T1out and T2out. I am unable to understand the error here.
can someone explain the error.
Thanks for the reply. Please can you suggest the method to interface both rfid and gsm together.
My project requires the mcu to first read data from RFID reader and then GSM modem will commumicate with server both to and fro.
Can both gsm and rfid reader be interfaced with atmega16 mcu as it has got only one USART? Are there any other methods to interface both with atmega16?
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