MCP3204 interfacing with 89C52 microcontroller

[14dhrumit]

I am using three sensors(soil moisture, LDR and rain sensor) with ADC MCP3204 which is interfaced with 89C52 controller and now i need to program that but i am not able to make it...
Moreover, I need to display the moisture content on LCD and that too in percentage(%).
Can anybody help,, please?? It would really be appreciated...

 

[jayanth.devarayanadurga]

You have to use SPI.

 

[14dhrumit]

what about the programming?

 

[jayanth.devarayanadurga]

That's what I said. you have to use SPI with that adc device.

 

[14dhrumit]

what about the programming?

I am not good at it, so can you help me out?

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and how am i suppose to do that?

 

[jayanth.devarayanadurga]

I have answered in your other thread.

 

[14dhrumit]

got it. thank you.

 

[jayanth.devarayanadurga]

There is no hardware SPI in AT89C52. You have to use Software SPI or use AT89S8253 which has hardware SPI. Can you use AT89S8253?

This project I did using AT89C51. I can recompile it for AT89C52 if you want.

 

[14dhrumit]

I can but will there be any changes that i have to make in my hardware due to this controller??
If yes, then i can't use it. If there wouldn't be any kind of changes then only i can use it..

 

[jayanth.devarayanadurga]

See the data sheet of AT89S8253 and compare pin functions with that of AT89C52. If you have differences then don't use as you don't want to make hardware changes. I can write the code for AT89C52 but using mikroC PRO 8051 and not Keil. If you want Keil C51 code then I need more time as I have to write Software SPI library for it.

Edit: There is no difference between the two chips except that it has SPI functions on PORTS 1.5, 1.6, and 1.7. I have used the same pins in SoftSPI code. IYou can use the AT89S8253 chip and I will write the code using mikroC using Hardware SPI library. If you want me to write the hardware or software SPI library then I need more time. I will post AT89S8253 Hardware SPI C Code and At89C52 Software SPI C code tomorrow.

 

[14dhrumit]

I have already seen that and all the features of 89C52 are included in that...

is it possible to load the code directly into the controller which is writtern in mikroC?

 

[jayanth.devarayanadurga]

is it possible to load the code directly into the controller which is writtern in mikroC?

What do you mean by that? You have to use a 8051 programmer to load your hex file into the MCU.

 

[14dhrumit]

See, we generally use loaders like "flash magic" to load hex file in the controller.So, is it possible to use the same loader and load the hex file of the program written in mikroC?

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amm, can you write for both the ICs? Is it possible?

 

[jayanth.devarayanadurga]

See if you are talking about loading hex file into chip which already has a boot loader then it is possible. If you have already loaded a bootloader to your chip then you can use mikroC HOD bootloader software to load the hex file to the chip and you don't need any hardware programmer for it but to load the bootloader you need a hardware programmer. If there is bootloader in the chip then you can connect your board to USB port of PC an use mikroE loader to load the hex file. Yes, I will write code for both the chips tomorrow.

 

[14dhrumit]

thank you. I will get back to you if i will be having any problem.
Thank you once again.

 

[jayanth.devarayanadurga]

Here are the hex files. See if it works in hardware. Clock should be 11.0592 MHz.

 

[14dhrumit]

can i get the code that you have written?

 

[jayanth.devarayanadurga]

First test the hex files. If it is working without any problem then I will post the code.

 

[14dhrumit]

by loading them in the controller? are they programmed in mikroC?

 

[jayanth.devarayanadurga]

Load them to MCU and test it in hardware not Proteus. Test the AT89S8253 hex. Yes, they are programmed in mikroC.