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Hi,
I am trying to send data from the inbuilt ADC of pic18f4550 to PC using USB. I successfully wrote a code for ADC to send data over serial port for testing.I have also modified the USB CDC-BASIC DEMO from microchip framework to echo back the data sent from PCand I was able to send and recieve...
If you manage to find a parallel port, here is a simple programmer circuit https://sourceforge.net/projects/ispprogrammer/
But if you want to use serial port, check this out https://oisanjaya.wordpress.com/2010/09/28/serial-com-port-programmer-for-at89s52-at89s51-and-avr/
I haven't used any of...
No, 89C51 requires a parallel programmer, it can not be programmed through serial port. Since you are starting your design, may be you should use 89S51/52 for which you can get cheap circuits and Software for In-System Programming from Net.
If the AT89c51 is not programmed then how will you be able to send/receive data or do anything?
You can refer to The 8051 Microcontroller and Embedded Systems Using Assembly and C by Muhammad Ali Mazidi Janice Gillispie Mazidi Rolin D. McKinlay. It has a few examples and good explanation of...
I am trying to sample an analog input and send the ADC output via USB. The device gets detected but a message pops up saying that "the device is broken or not functioning". The device worked properly when i used it to echo back a sent message. I am using PROTEUS simulator to test my code and...
Sir, if I have to change everything, then could you please suggest to me a new circuit to interface sensors with microcontroller. I have to complete this project in the next 15-20 days. Any help would be appreciated.
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Sir, if I have to change everything, then could you...
Hi,
I am also using at89c51 for interfacing lm35(temperature sensor) and hih 4030(humidity sensor). I am using a similar circuit as in the image below.
But, I realized that the output is a whole number whereas i wanted to display temp upto 1 decimal place. This problem arises because ADC0808 is...
Hi!
I am trying to send data from 89c51 and display it on PC using VB2010. I also want to send some numeric data(control parameters) to microcontroller from PC. I have some knowledge of 89c51 programming but little about VB2010.
I need help on VB2010 program on how to communicate using USB or...
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