wi fi interfacing with lpc2148 arm7 primer


Posted on Feb 5, 2014

Circuit shows how to interface the Wi-Fi with microcontroller. The Wi-Fi module continuously transmits or receives serial data (RS232 protocol) through internet without wires. It delivers the received data and receives the data to be transmitted to and from a host system through a host controller interface (HCI). The most popular host controller interface today is either a UART or a USB. Here,


wi fi interfacing with lpc2148 arm7 primer
Click here to download the full size of the above Circuit.

I will only focus on the UART interface; it can be easily show how a Bluetooth module can be integrated on to a host system through a UART connection. Transmit or Receive data over internet with LPC2148 Primer Board by using Wi-Fi module through UART0. The message communication is done in internet or mobiles using Wi-Fi module through MAX232 into the SBUF register of LPC2148 microcontroller (refer serial interfacing with LPC2148). The serial data from the Wi-Fi receiver is taken by using the Serial Interrupt of the controller. The UART0 pin lines are used to transmit & receive operations in LPC2148 Primer Board. The Interfacing Wi-Fi module with LPC2148 program is very simple and straight forward, which send or receive a message in LPC2148 Primer Board through Wi-Fi module by using UART0. Some delay is occurring when a single data is transmitted or received through UART0. C programs are written in Keil software. The baud rate of microcontroller is 9600. To compile the C code you need the KEIL software. They must be properly set up and a project with correct settings must be created in order to compile the code. To compile the above code, the C file must be added to the project. In Keil, you want to develop or debug the project without any hardware setup. You must compile the code for generating HEX file. In debugging Mode, you want to check the port output without LPC2148 Primer Board. Give +3. 3V power supply to LPC2148...




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