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My program is to send sms using a keypad, (similar to the operation of the phone) I can't change the bit rate because my GSM modem works on that bit rate. All the setup is ok, when I write a code something like(If I press a key, Tx string of characters Ex: If key 1 is pressed >> Transmit serial...
I can see what I typed from the LCD. LCD will show what I typed using keypad correctly. Problem Is with the serial transmission. Some of the characters which I typed lost when serial transmission, but it will be on display. Can't find the trouble yet, need some guidance with feedback
Cable is not too long, only 5cm. I didn't got what you said, could you please explain it more (For the 8051 you should write to a port before reading it.)void SerTX(unsigned char x)
{
SBUF = x;
while(TI == 0);
Delay(10);
TI = 0;
}
You are telling me to change the...
Hi all, I am using 4x4 keypad,16x2 LCD display and 8051 micro controller to send numbers to the serial port. It works fine in ISIS Proteus 7.2, but when I use the same program in my hardware, some of the numbers which I entered from the keypad is missing when transmission. What is the reason for...
Hi
I am using a chinees phone (Dorado T33i) as a gsm module to connect AT89S52 micro-controller. Its working fine for Hyper-terminal with 115200bps. How can I use COMPIM of ISIS proteus to interface this GSM module to micro controller virtually? I have sucessfully connect other GSM modules...
Hi all,
I need to filter received sms as follows.
If received sms contain "Route 2"
LCD must display : Line 1 = Route 2
Line 2 = message (received sms)
If received sms contain "Route 1"
LCD must display : Line 3 = Route 1
Line 4 = message...
How can I check whether I an sending ASCII characters or not? How can I set up the basic configurations to send ASCII characters from my GSM module (Motorola C168).
Hi,
Thanks for your help. I works now. I have another problem, that is when I am sending a SMS using AT command (AT+CMGS="tel no" message and ctrl+z) it will successfully send. but I cant read the received sms. It will show as <unreadable format>. What is wrong with my AT commands?
HI
I am using AT89S52 to read a sms which attached to motorola C168. I need to transmit AT+CPMS="ME","ME","ME" to serial port as below, How can I do it?
void SMSString(char*text) ;
SMSString("AT\r"); // AT commands to initialize gsm modem
delay(50);
SMSString( "ATe0\r"); // turn off echo...
Hi
When I send SMS using AT command (AT+CMGS="tel no" message and ctrl+z) it will successfully send. but I cant read the received sms. It will show as <unreadable format>. What is wrong with my AT commands?
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