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SIM900 module HTTP protocol implementation

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akshaybhavsar

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I am using SIM900 module in my application i have to read hex file from server with HTTP protocol and store it in on board flash.I have to select controller frequency and peripheral frequency for that I want to know what is speed of HTTP protocol for SIM900.
 

akshaybhavsar said:
I am using SIM900 module in my application i have to read hex file from server with HTTP protocol and store it in on board flash.I have to select controller frequency and peripheral frequency for that I want to know what is speed of HTTP protocol for SIM900.
Click to expand...

My requirement is also same.
If you get any information, please update here.

Thanks in advance.
 

Hi,

what is speed of HTTP protocol
Click to expand...
I assume there is no answer to it. HTTP is a protocol, it has no dedicated speed.
Maybe there are some timeouts specified to detect a broken line...

Generally it is not unusual to run HTTP over an analog modem with 9600 baud ... and it is not unusual to transmit it with GB/s speed.

I don´t think one needs to adjust controller frequency or perifieral frequency with respect to HTTP.


Klaus
 

controller frequency matters.bcz if we set low frequency SPI communication will be slow an HTTP datawill have higher speed bxz it is independant of controller frequency.data is coming faster and same data is writtern into memory with lower speed.There might be loss of data
 

Hi,

SPI speed is another problem, but it is NOT related to HTTP.
SPI speed doesn´t care what protocol you run.

Klaus
 

i used 20M system frequency i saw data loss bcz of low spi frequency and high HTTP data frequency.After that i doubled System frequency,I succeed.
 

akshaybhavsar said:
controller frequency matters.bcz if we set low frequency SPI communication will be slow an HTTP datawill have higher speed bxz it is independant of controller frequency.data is coming faster and same data is writtern into memory with lower speed.There might be loss of data
Click to expand...

Can you please help me out..
I dont want to receive from server. I want to send to server by sim800.
Can you help me out ?

- - - Updated - - -

akshaybhavsar said:
controller frequency matters.bcz if we set low frequency SPI communication will be slow an HTTP datawill have higher speed bxz it is independant of controller frequency.data is coming faster and same data is writtern into memory with lower speed.There might be loss of data
Click to expand...

Can you please help me out..
I dont want to receive from server. I want to send to server by sim800.
Can you help me out ?
 

Do you want to send TCP packets to server
 

akshaybhavsar said:
Do you want to send TCP packets to server
Click to expand...

No i want to send almost like 10 parameters of sensors to server after single minute by sim800 + pic16f477 controller.
Tell me whats the solution.

Thanks in advance !!
 

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