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| Search found 12 matches |
| Author | Message |
|---|---|
 Topic: Strange results when writing to EEPROM |
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| Gelio Replies: 11 Views: 19462 |
 Forum: General CCS C Discussion Posted: Wed Aug 24, 2016 6:16 pm Subject: Strange results when writing to EEPROM |
| At 2455 seems all ok...
Please, help to choose Baud rate for UART: CONFIG1 Fuse is 0x8E22 Crystal is 20 000 000 How to calc correct Baud rate for #use232 string? Thank you. |
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| Topic: Strange results when writing to EEPROM |
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| Gelio Replies: 11 Views: 19462 |
Forum: General CCS C Discussion Posted: Wed Aug 24, 2016 1:40 pm Subject: Strange results when writing to EEPROM |
| I tried to change the PIC unit to PIC18F2455 and set 4Mhz crystal.
Then implement similar code. All working ok. So maybe my 4550 is somehow broken or has been burned a little. Original crystal is 2 ... |
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| Topic: Strange results when writing to EEPROM |
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| Gelio Replies: 11 Views: 19462 |
Forum: General CCS C Discussion Posted: Wed Aug 24, 2016 12:31 am Subject: Strange results when writing to EEPROM |
| Thank you friends,
i tried the Ttelmah code fixed. Compiled and burned. it works first time. Then extended array to 256 bytes and had zeros instead of normal data. Now trying to reduce size to fi ... |
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| Topic: Strange results when writing to EEPROM |
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| Gelio Replies: 11 Views: 19462 |
Forum: General CCS C Discussion Posted: Tue Aug 23, 2016 8:05 am Subject: Strange results when writing to EEPROM |
| Hi all,
Trying to write to internal EEPROM of PIC18F4550. Pickit2 correctly verifies and programs the chip. After normal run I'm trying to save some bytes into 256-byte internal eeprom. And as a re ... |
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| Topic: monitoring UART problem |
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| Gelio Replies: 7 Views: 10420 |
Forum: General CCS C Discussion Posted: Wed Sep 03, 2014 2:48 am Subject: monitoring UART problem |
| Ok, thanks, i will try today.
P.S. one thing. I'm programming the BLOCK 0x000-0x7FF only after bulk erase. other memory unchanged while programming. think maybe when I'm connecting with UART moni ... |
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| Topic: monitoring UART problem |
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| Gelio Replies: 7 Views: 10420 |
Forum: General CCS C Discussion Posted: Wed Sep 03, 2014 12:48 am Subject: monitoring UART problem |
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#include <18F2455.h> #use delay(clock=20M) // frequence 20 Mhz #use rs232(uart1,baud=38400, bits=8, arity=N,xmit=pin_c6,rcv=pin_c7) #fuses 1=0x8E24 #fuses 2=0x1E37 #fus ... |
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| Topic: monitoring UART problem |
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| Gelio Replies: 7 Views: 10420 |
Forum: General CCS C Discussion Posted: Tue Sep 02, 2014 11:09 pm Subject: monitoring UART problem |
| Sorry. my mistyping.
of course printf("DeviceFW Revision: %02X %02X\r\n",SN1,SN2); Always return 00 00 if CP1 set to 1 then it working fine. But in release mode when CP1=1 then it prin ... |
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| Topic: monitoring UART problem |
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| Gelio Replies: 7 Views: 10420 |
Forum: General CCS C Discussion Posted: Tue Sep 02, 2014 4:33 pm Subject: monitoring UART problem |
| Hi all,
programmed my PIC18F2455 with bootloader and flash. in debug mode all working fine. in normal mode i cannot see some debugging messages from PIC. calling the read_program_eeprom( ... |
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| Topic: Program bootloader without erasing the EEPROM |
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| Gelio Replies: 2 Views: 6024 |
Forum: General CCS C Discussion Posted: Sat Aug 30, 2014 2:48 pm Subject: Program bootloader without erasing the EEPROM |
| Hi all, encountered the situation where the program bootloader block in PIC18F2455 cannot be performed without erasing the eeprom.
I made sequence of commands as described in specification 39622l. ... |
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| Topic: Baudrate of PIC 12Mhz question |
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| Gelio Replies: 6 Views: 9990 |
Forum: General CCS C Discussion Posted: Tue Aug 26, 2014 1:20 am Subject: Baudrate of PIC 12Mhz question |
| Thanks for your replies, i did such thing.
i changed Crystal to common used 20Mhz. then i made small piece of code inside CCS like #use DELAY (crystal=20000000) #use rs232(baud=115200, ... |
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| Topic: Baudrate of PIC 12Mhz question |
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| Gelio Replies: 6 Views: 9990 |
Forum: General CCS C Discussion Posted: Mon Aug 25, 2014 1:00 pm Subject: Baudrate of PIC 12Mhz question |
| Ok,understand. Thanks for pointing me.
Are there some example for PIC with CCS C? i need to use UART communication with PIC18F4550. Please, can you post some example of using it on any PIC device u ... |
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| Topic: Baudrate of PIC 12Mhz question |
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| Gelio Replies: 6 Views: 9990 |
Forum: General CCS C Discussion Posted: Mon Aug 25, 2014 7:14 am Subject: Baudrate of PIC 12Mhz question |
| Hello!
please, help me to choose right baudrate settings. My target based on PIC18F4550 with external 12Mhz crystal. configuration settings are: http://i59.tinypic.com/2v00hg0.jpg I'm trying to ... |
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