• Pic16f690 Serial Communication C Code Tutorials

I have spent so much time trying to get the UART to work with Bluetooth module. I am using PICkit 2 programmer to burn the code to PIC16F690. When I use the UART tool, I can transmit and receive data correctly. I am able to echo whatever I am typing. When I connected the Bluetooth module to breadboard, I can receive the data being typed from UART tool to my phone. However, typing something from my phone does not echo it back.

16F690 serial communication tutorial. Hello, I am complete newb, so please bear with me. I have purchased the PICDEM Lab Development Kit and trying to learn to program micros. I have gone through the blinking light tutorials, and while all of that went pretty well I really want to learn to communicate with. In this tutorial we will make a simple serial port based programmer for PIC microcontrollers. I have tried several easy to make programmers and software, and here I a. The new OS is normally located at *** C. PIC16F688# PIC16F689# PIC16F690# PIC16F72+ PIC16F73. Dedicated to programming Microchip PIC processors.

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1. Transmit and Receive works on the UART Tool provided by PICkit 2 programmer

2. My phone can receive data from UART Tool. However transmitting from my phone -> Bluetooth -> PIC does not work. I have BC417 Bluetooth module. What could be the problem?

Here is my code

Thanks in advance!

1 Answer

'from my phone -> Bluetooth -> PIC does not work'

So without any details of what is wrong,

I suggest you don't retransmit the bytes (due to the delays) but just count them and periodically transmit the total and see if that gives different symptoms.

Not the answer you're looking for? Browse other questions tagged bluetoothembeddedmicrocontrolleruartmikroc or ask your own question.

One of the most commonly used and easy to use the protocol in serial communication is USART. It is the abbreviation for Universal Synchronous Asynchronous Receiver Transmitter. It is the commonly used asynchronous communication protocol and available in a vast variety of devices. For example, GSM modems, GPS modems, sensors etc. The advantage of asynchronous communication is it doesn’t need a clock for syncing data between two devices.

RS-232

Pic16f690 Serial Communication C Code Tutorials

The computer has a serial port which uses RS-232 interface standard and it is one of most reliable communication standard using UART protocol. RS-232 voltage levels are different from TTL levels and a voltage level converter is a need when interfacing with PIC Microcontroller board.

Interfacing

PIC Microcontroller has inbuilt UART module which is very easy to interface. There are two pins for UART module, TX, transmitter and RX, receiver. When interfacing to other devices, Tx will be connected to Rx of the other device and Rx will connect to Tx. Both devices should share a common ground, otherwise, they will misbehave.

This is the firmware guide of PIC Microcontroller: UART Interfacing with PIC Microcontroller

Baud rate

Baud rate is the number of bits transmitting or receiving be second, commonly denoted in bps (bits/sec). It determines the speed of the transmission.

Software Tools

The best tool for checking communication with PC is RealTerm , we have written a guide on how to use RealTerm for your firmware development. Or you can use the HyperTerminal tool from Windows (old versions only).

Examples

We have some example firmware of UART interfacing in our code library section. Download sample codes from our Code library.

You may also want to read:

1. UART Interfacing with PIC Microcontroller
2. Basics of UART

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