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Also for all Files after the first File im getting send 0x15 04 0 6C the overwrite impossible error packet back to me. How should i react to that and do i need to send some command after the data packages for one file to signalize that this file is done and a new one begins? At the moment im just s...

The problem was my casio. I bought a new one and now it's working like it should. The only kinda weird problem im still getting is: When transfering large Images, im getting an error package after around 120 data packages(i think its the last Data package). 0x15 01 0 6F//i've read in your pdf that ...

I must admit, that I am at a loss here. If rx/tx-wires are not connected correctly, you shouldn't get any reaction at all. After you have sent the 0x45-command, do you wait for the ack-packet (without sending any other byte)? Perhaps you should post a complete dump of bytes, which are sent and recei...

Error check is just my String to be printed when no ack package is received. Before starting a file transfer or any other commend, there should be ensured, that the check-packet is properly answered by the ack-packet (See fxReverse 4.10.1). Could you log the bytes, which are actually exchanged by t...

I updated the Code now with checking for Ack, but its still not working. As soon as i connect the calculator to the Arduino, change cable to 3pin and press "RECV" my console is printing: _|0000000|_Error check _|0000000|_Error check _|00000000|_Error check _|00|_Error check _|000000|_Erro...

What is the calculator's response to the 0x45 command? Usually you have to wait for a response-Packet (F. i. ACK) after sending a command or a data packet. ... Serial.write("56");//checksum(calculated from everything after command) ...wait for ACK sendData("12345678"); ...wait fo...

I think one really shouldn't rely on a zero terminator when working with serial numbers, as they might contain zeroes, which would cause weird behaviour anyway. Just to ensure that people, who use the serial number in their programs, are not concerned: The serial number of the casio fx-9860 calcula...

A memcpy isn't necessary, the following suffices: //8-byte unique ID const unsigned char * deviceId = (unsigned char *) 0xA000FFD0; Then you can use deviceId the same way as you'd use workbuffer , except for writing of course. The problem with the serial number is, that it is not terminated by a ze...

Perhaps you could try to trigger the bootcode OS update by simultaneously holding down F2, 4 and Ac/ON and pressing the RESTART-button about one second (the calc should show a blank display after releasing the keys) and finally pressing 9 and x consecutively (hold down 9 and x about a second each). ...

Long time since. I do not remember. I have the notion, that I had noticed some according code while browsing OSes.