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hi ashkar,
i understand u r trying to do spi bit banging. i suggest u to read SPI protocol first. and please recheck the Din which u have used is for data
receive or transmit. usually it will be used to receive data. pls post ur circuit diagram for better clarity..
finally when u do bit...
hi ritesh,
have u checked the tx and rx pins are properly connected with ur board? if u have multimeter pls check the reset pin when u initiate the loading.. if possible check any voltage drops.. sometimes usb to uart go bad. i faced with usb to uart converter bf810.
. and i can give u another...
Hai moni..
Please interchange the MISO and MOSI in slave or master. your picture shows correct information but in your port pin config it is wrong.
If still it didnt work, let us go through the code
thanks and regards
karthikkr
Yes i understand this. I was considering that when we block high current flow with higher resister, the resister dissipates the more amount of current as heat.
But actually, when we try to limit high current flow with small resister, the amount of heat will be larger than the higher valued...
Hai thanks for your explanation.
A higher valued resistor blocks high current. Does that mean it is not going to consume the current or it is going to dissipate the current interms of heat?
Hai friends
I wanted to know a detail about battery life.
Consider 2 network as follows
1. A battery (12V) is closed with a resister(200 ohms) and a bulb (10W)
2. A battery (12V) is closed with a resister(2000 ohms) and a bulb (10W)
From the above 2 circuits, which battery life will drain...
Hai
Please refer your data sheet of microcontroller. They will give the typical circuit for the microcontroller capacitor, resistor and crystal OSC values.
Thanks
When you supply unstable power to microcontroller, it wont fail to work, until or unless the supply crosses the maximum supply range of micro controller.
Think that all your microcontroller's internal peripherals are connected with that particular voltage (Vdd). When you feed unstable supply...
Thank for your explanation. So what problem you are getting with the initialization?
As per the explanation, your multiplexer gives different channels output at a particular period. Do you know how to control this channel selection of multiplexer?
If yes, select a channel of multiplex and...
Hai
Do you mean that you will be getting digital data for multiplexer? That multiplexers output goes to ADC?
Did you really meant ADC or DAC? Because i dont think you can send a digital data to ADC.
Can you please be clear your requirement?
All the best
Thanks
Hai
U have 2 or more ways to refer only the specified bits of a port.
1. PORTA.RA0 // depends on ur compiler
2. #define ref(porta) porta&(0xF0) //this is a general way to read porta 7,6,5,4 bits.
Prefer the best way which suits to ur application.
The capacitor value depends on the frequency of the output of comparator.
Have u referred the datasheet of comparator?
They could have given the typical circuit.
It is better to avoid the supply noise first by placing a .1uf near the supply pin of comparator to the gnd.
All the best
Thanks
Can u upload the port config part from ur program? I will try to go through the datasheet.
Thanks
If possible upload schematic also. I have downloaded the datasheet of the lcd module. I want to know how u r interfacing it. With lcd and touch screen 2 spi is used to communicate with...
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