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Using RC522 RFID with ArduinoUNO Original
I have used in the past resistor divider and it worked. On your Arduino UNO you have 3.3V so be sure to power from the 3.3 V source. Also add some resistor on the data and...
Sunday, 3 May 2020 - 17:48
AVR BAD MEMORY allocation
Finally solved it, the next challenge will be to see if it is able to write to the extended memory. I think anyone who uses this bootloader should make the modifications and maybe...
Thursday, 30 April 2020 - 12:44
AVR BAD MEMORY allocation
clawson wrote: Shame you don't have a JTAG as you'd be able to see what's going wrong in about 2 minutes!   You know what is amusing. I don`t have any more pins, because I...
Wednesday, 29 April 2020 - 20:47
AVR BAD MEMORY allocation
clawson wrote:efine in bootcfg.h and it's defined as a UL constant so the comparison should not be truncated to 16bit   I have tested out different things of truncated...
Wednesday, 29 April 2020 - 20:25
AVR BAD MEMORY allocation
curtvm wrote: The hex shows the last page is not being written (0xFE00 is the start of a flash page), so you need to figure out why the last page is not being written.  ...
Wednesday, 29 April 2020 - 19:20
AVR BAD MEMORY allocation
for(li = BUFFERSIZE; li > 0; li--) //receive a full data frame { buf[bufptr++] = WaitCom(); } //putstr("ajuns4"); //send "Z" crch...
Wednesday, 29 April 2020 - 18:46
AVR BAD MEMORY allocation
I did one more test with a program which has a very little dimension 176 bytes. And even if I receive the update success string, the  MCU does not have anything in memory. I...
Wednesday, 29 April 2020 - 17:43
AVR BAD MEMORY allocation
clawson wrote: In the code there's that test that the bootloader is not overwriting itself. Could it be this is not considering > 64K, that is that it's working in 16 bits when...
Wednesday, 29 April 2020 - 17:37
AVR BAD MEMORY allocation
Ok I retried to do as you said and compared the versions, the hex file uploaded with the STK500 and after that with the bootloader. In the left is the hex uploaded with the...
Wednesday, 29 April 2020 - 17:09
AVR BAD MEMORY allocation
The only thing I modified is in  buffersize from 128 to 16, because the BLE can handle only 16 bytes once. 
Wednesday, 29 April 2020 - 13:47
AVR BAD MEMORY allocation
clawson wrote: nikel1992 wrote:.:020000021000EC Which is a 20 bit offset record. So the 4 digit addr fields that follow should be interpreted as 1???? rather than 0????. Does the...
Wednesday, 29 April 2020 - 09:19
AVR BAD MEMORY allocation
curtvm wrote: You are not doing quite what I said, and we not have gained much.   Try more simple- build your app, not booloader, the app that you said works ok....
Wednesday, 29 April 2020 - 05:03

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