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cvargcal
Joined: 17 Feb 2015
Posts: 134
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| How send print in hex? |
 Posted: Wed Apr 22, 2020 7:14 pm |
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I have this function, and I need send buffer in hex:
| Code: | uint8_t TCPClient_Send(char* data, uint16_t length){
if( SIM800L_sendATCommand("AT+CIPSEND",">",3000)){
for (uint16_t i = 0; i < length; i++){
fprintf(uart2,"%02x",Data[i]);
}
fprintf(uart2,"%c",0x1A);
}
} |
This is the data that should be sent.
| Quote: | | 103D00044D51545404C2012C000541424344460008637661726763616C002061696F5F784A6562383365476E6C594145445667786C66797173754B4D74746B |
but instead the data arrive as string just like I sent...."103D00044D51545404C2012C0005414...." why?
I want to do like made hercules.
Last edited by cvargcal on Wed Apr 22, 2020 7:51 pm; edited 2 times in total |
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jeremiah
Joined: 20 Jul 2010
Posts: 1401
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| Posted: Wed Apr 22, 2020 7:35 pm |
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| fprintf sends strings. Use fputc() instead to send it in raw binary/hex/integer form. |
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cvargcal
Joined: 17 Feb 2015
Posts: 134
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| Posted: Wed Apr 22, 2020 8:33 pm |
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| jeremiah wrote: | | fprintf sends strings. Use fputc() instead to send it in raw binary/hex/integer form. |
I used :
| Code: | | fputc(Data[i],uart2); |
but when print that way... I think the PIN RX uart is blocked because let to capture data.
if I print of other way the interruption dont blocked....  |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19966
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| Posted: Wed Apr 22, 2020 11:34 pm |
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fprintf(uart2,"%c",0x1A);
Use instead:
fprintf(uart2,"%02X",0x1A);
Now that will just print the number in hex (as two digits).
If you want the '0X', you use:
fprintf(uart2,"0x%02X",0x1A);
The 'X' in the format, can be lower case for 1a, or upper case for 1A.
Using the leading '0', makes it always print both digits, so:
00, 01, 02, 03... 0A, 0B etc.. |
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cvargcal
Joined: 17 Feb 2015
Posts: 134
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| Posted: Thu Apr 23, 2020 12:01 am |
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Thanks so much.
I found my problem.... i did printed fine the hex, but I think in this header from packet it has a hex weird and as module gms it has echo activate so one character comeback a blocked the response module... |
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