Here is a Material Design APP to make charge
Mifare Classic Card easily.
Mifare 1KSupported Device.
Click the + floating button will display
Add Card Dialog, put the Mifare Classic Card close to the NFC antenna, then you can add a card to the APP.
Slide the item toward right to remove the card.
Press and drag to sort Cards.
Click the ** + floating button ** to display
Add Key Dialog, select the sector number by sliding the picker, and enter 6 bytes (12 digits or letters) valid key A or key B, click
Complete to save.
Click the ** modify button ** will display the
Modify Key Dialog, select new sector number by sliding the picker, and modify the 6 bytes (12 digits or letters) valid key A or key B, click
Completesave new keys or sector.
After the card is close to the NFC antenna, click on the ** read button ** will read 4 block of data from clicked sector, you could modify and write the new data.
Must add correct keys before. After marked, it can be compared with highlight datas.
[Pro Version] Data Backups/Restore, Compare vertically, Rule Repository.
Click data item to add/modify rule.
Click icon to copy rule to another block of another sector.
[Pro Version] Rule copy.
Mark the byte, then verify the money is correct, and click Next.
Check the bytes that changes and add expressions. Make sure that it's correct then click OK.
Crc8: crc8, crc8cdma2000, crc8darc, crc8dvbs2, crc8ebu, crc8icode, crc8itu, crc8maxim, crc8rohc, crc8wcdma
Crc16: crc16ccittfalse, crc16arc, crc16buypass, crc16cdma2000, crc16dds110, crc16dectr, crc16dectx, crc16dnp, crc16en13757, crc16genibus, crc16maxim, crc16mcrf4xx, crc16riello, crc16t10dif, crc16teledisk, crc16tms37157, crc16usb, crca, crc16kermit, crc16modbus, crc16x25, crc16xmodem
Note1: Only decimal arithmetic is supported
Note2: Crc expression must be called as shown above
Get Expressions Example Click Here
Press and drag to sort Expressions.
The calculation is from top to the end.
Press and drag to sort Keys.
Slide the item toward right to remove the key.
Long press the floating button to show key lists.
Long press the Charge TextView , you can charge as the Quotas.
Long press the recharge record list, then pop up the dialog will allow you to to clear the recharge record or not.
Long press the floating button to preview the data generated on Rule.
Thanks for the friends on the contribution of open source community, regardless of rank.