morsimple.blogg.se - Change sd card serial number

In most cases it worked fine but there were devices that couldn't write to micro SD card - a lot of I/O errors would happen.

The hardware and software sources: SD-MUX on Tizenįirst revision of the device was built on a 2-layer PCB.

Main assembly files: SDWire-assembly-v1.4.zip.

Main board PCB fabrication files: SDWire-fabrication-v1.4.zip.

If yes then try to find it in following or similar location: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\USBDM\USBDM.exe Note: On Windows 10 it might be a little bit hard to find the tool location after installation. After few seconds tab "Info" should automatically become active and the new serial number should appear. Connect SDWire and when you see its information on the "Info" tab, switch to "Branding" tab, change "Serial Number String" to whatever you want and fits requirements and then click "Update Now" button. Update of the serial number is quite a straightforward process. It is Windows software that can be downloaded from here: The only known method is to use USBDM software form Microchip company. But before that the unique serial number has to be set. In this version we can use EEPROM memory to distinguish SDWire devices form each other. This interface is handled with exactly the same software (sd-mux-ctrl) which is used for SD MUX.

control interface - which allows to control SD MUX functionality.

USB mass storage - which support is built in every modern operating system.

There are two USB interfaces (physically one connection): Using simple UDEV rules and unique serial numbers solves the problem. Without this EEPROM each device has the same serial number which does not allow to tell which USB card reader is connected to which device. This is very useful in automated systems where more than one SDWire is used in one USB host. This in turn makes it possible to distinguish one SDWires from another. It enables user to change serial number of this IC. In this version, SDWire is equipped with EEPROM connected to USB2640 IC. The PCB board has to be 0.8 mm thick to make it possible to put it into standard micro SD card socket. LED positions are showed in the image below. SD card multiplexer itself is exactly the same in both devices.Īll LEDs are present on both sides of the board to make them visible no matter which side of the board will be facing you.

SDWire does not have power switch or USB switch but has built in USB SD card reader. Thanks to this, there is no need for special cables with micro SD adapter and connection to SD slot on a device is very short.ĭesign of this board is based on SD MUX. The PCB board is designed in such way that it fits into micro SD card slots. Both USB mass storage and MUX control are served through the same USB connection.

There is only one micro USB socket for connecting to host PC.