Degree Symbol Using Sim900

[rmrps]

Hi friends i am using sim900 modem to send temperature message to customer for that i have to send degree symbol via sms using sim900 module for that i am using hex code 0xB0 for degree symbol but it will not received in sms remaining characters received fine please give me your guidance to send degree symbol via sim900 module sms

 

[milan.rajik]

Try this.

UART1_Write_Text(temperature);
IART1_Write(' ');
UART1_Write(0xB0);
UART1_Write(' ');
UART1_Write('C');
UART1_Write(0x1A);

 

[rmrps]

No it is not working
Uart_2_PutChar(' ');
Uart_2_PutChar(0xB0);
Uart_2_PutChar(' ');
Uart_2_PutChar('C');
Uart_2_PutChar(0x1A);

 

[milan.rajik]

Please zip and post your project files.

- - - Updated - - -

Try this. It works for me.

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Code C - [expand]
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UART1_Write_Text(temperature);
IART1_Write(' ');
UART1_Write(248);
UART1_Write(' ');
UART1_Write('C');
UART1_Write(0x1A);

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broken link removed

 

[FvM]

You need to learn something about GSM alphabets. The default GSM 7-bit alphabet doesn't include the degree symbol.

Transmitting SMS with a different alphabet is a bit tricky. You must select a different character set (e.g. UCS2) in the GSM header and also switch the modem interface to a different alphabet. To avoid conflicts with limited charset support of a modem, most programmers avoid these problems by switching to PDU mode SMS.