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It is nothing different from UART code.
Just implement the UART code and switch the direction control pin of the RS485 driver IC, through a I/O pin of MCU.
This will switch the MCU in master or slave mode accordingly
Hi,
It seems to be a cliche to ask code help for scrolling display. But, mostly the help is available for scrolling LED display or Char LCD display.
I am using 128x64 GLCD on which we write data using column scanning. So, scrolling of data from left to right or right to left is easy and I...
Sir, that is one solution, I thought of it... taking a simple switch case or if else for all possible conditions.
But, here is twist...
For ex, I have main menu Item as 'SMS' in which the submenu items are "Inbox, Write, Draft, Delete"
Further selecting any of these will lead to further...
Hello,
I am developing a mobile application on a GSM trainer kit having LPC2148 on it.
My application should do...
Calling
Receive call
Send SMS
Read SMS
Draft SMS
Delete SMS
Save contact info on Phonebook (only no. and name.)
I dont understand how to write code for navigating these menu...
Hello,
I am interfacing SIM900A with LPC2148.
I could successfully give the power on sequence to SIM900A and it blinks the NStatus LED.
Now, I have to implement the driver to send the AT commands to SIM900.
Please provide me with any code snippet/Flow chart to understand how to write driver...
Hello,
This is my first time of working on GSM.
I have got a kit of SIM900A interfaced with ARM7.
To begin with, I am facing following problems...
1. I cant insert the sim card in the slot.
When I try to lock, the sim card oozes out of the slot.
2. I can just see the power on LED on...
I have designed a circuit in Proteus which analyses battery voltage level and pass it on to PIC.
I have used a design with two sheets. But unfortunately, the nets from one sheet doesnt pass to the other sheet.
That is connections named V0, V1, V2, V3 on sheet 1 are not passed on to the sheet...
Hello,
I have searched for the PIC12F1822, if locally available here. But, it is not available. So, I decided to go ahead with PIC16F675. The 3 I/O I will be using for 3 sensors and 3 I/Os for RS485. But, is it possible to implement RS485 on the I/Os? I have never done this before but I have an...
Hello,
Please give me a link or document throwing more light on capacitive sensing technique. I searched on google about it in association with water level controller but could not find much.
I am actually thinking to use PIC12F508/12F675 which has 6 I/O out of which 2 I can use as UART by...
Hello,
Que 1: -
I am building circuit for Water Level Controller. On microcontroller side, my requirement will be to use 3 I/O pins (Low, high and overflow levels of water in tank) and a UART for RS485 communication.
My first choice will be Microchip 12F, 10F controllers. I have browsed...
Guys,
I have reconfirmed the ratings of the battery of my bike. It is 12V/3AH.
See this...
I think I should use microcontroller for (considering the suggestions given by you people)
1. measuring the charge level of battery.
2. Start and stop charging based on the battery charge level.
3...
Guys,
for my bike I have to design and create a battery charger.
The rating of the battery is 12V/3AH.
I have got circuits based on LM350 which will charge battery of my bike.
But, I think I should control it through a cheap microcontroller.
Is it possible to do that?
If yes, which are...
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