cf_rh320u_93_reader 0.3.1

Library for using Chafon CF-RH320U-93 (ISO 15693) USB card reader
Documentation 
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use crate::*;

impl CFRH320U93 {
    /// Reads `number_of_blocks` blocks (1 block = 4 bytes) from card's data
    /// starting from the `skip` block. 
    pub fn iso15693_read(&self, flag: AccessFlag, skip: u8, number_of_blocks: u8) -> Result<Vec<u8>, ReaderError> {
        let mut buffer = Buffer::new();
        buffer.write(0x04);
        buffer.write(0x11);
        buffer.write(flag as u8);
        buffer.write(skip);
        buffer.write(number_of_blocks);

        // reader accepts uid but doesn't care about it. so it returns the data of whatever card is present
        //let uid = [0x00, 0x00, 0x68, 0x0E, 0x4E, 0x38, 0x08, 0x01, 0x04, 0xE0];
        //for u in uid {buffer.write(u);}

        self.set_report(buffer.get())?;

        let result = self.get_report()?;
        let found = result[11]; // 0x00 - card is present, 0x01 - it's not
        if found == 0x01 {
            return Err(StatusCode::from(result[12]).into())
        }
        let data = result[13..result.len()].to_vec();

        Ok(data)
    }
}