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first of all ensure your sim was properly inserted and was acknowleged by the modem.
secondly at+cmgr=1 is to read the first message that was received..if u havnt received any message than it will give an error....so to ensure send one message to that number and use this at command..it wont...
please ....im indeed in need of a solution here...i have tried with all kinds of circle algorithms...but none is gvg result.that means im making mistakes with the data types ryt?
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void GLCD_Circle(unsigned int cx,unsigned int cy ,unsigned int radius)
{
unsigned int x, y...
exactly....ur main power supply myt be the cause of problem....just verify that....for a character lcd i dont think a negative voltage is required....which model of lcd r u using..?
hey hiii.....in my project i have few external buttons which is used to trigger the message sending part,torch lights and few other things....so to which should i connect these buttons to cause interrupts when pressed?
should it be connected to extint0 pin or to eintx??
hii.....im working with this glcd...and i hd written a code by which pixels do appear on the screen but randomly...my power is proper and also the contrast volatge....im really confused with the initialisqation code...especially the delays that must b given and also the order of initialising the...
im using character lcd 16*2
....im now getting the interrupts well..though im not being able to extract the incoming message well to be displayed on the lcd.
Sir i have completed the message sending part from sim908 to lpc 2148 using the polling method..Now i wanted to do the same with interrupts...i hd written the code for it which i have attached here buts its not working for me...i am not receiving any characters from sim908 now...
please let me...
hiii....im working with sim908 gps and lpc2148.Im using the antenna prescribed by simcom.however my antenna is taking almost 14 minutes to collect the proper coordinates and time..cud sumone help me with which is the proper antenna to be used.to start the modem im giving the following AT...
hiii....i hv finally solved the problem...message gets delivered now!!! :)...but the message received also contains the echo response and OK response along wid it....i.e.if the message set was "hello" den i also get at,at+cmgf=1,at+cmgs+....."hello
Okay i get it....i tried with 'a' delay 't' delay '0x0d'...still im not getting the response...could you please check my code and tel me how to solve the problem using polling...i dont want to use interrupts as of now..i wanted to try using polling method itself..i have attached my code...
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