Library Description

Library provides functions for sending commands to device and controlling it's pins

Key functions:

• void fingerprint2_soft_reset ( void ) - Function for reseting device
• void fingerprint2_send_cmd ( uint8_t *cmd ) - Function for sending command to device
• void fingerprint2_reg_one_fp ( uint8_t fp_index ) - Function for registrating one fingerprint on specific index

Examples description

The application is composed of three sections :

• System Initialization - Initialization of UART module and additional pins
• Application Initialization - UART interrupt initialization, restarts device and waits for device to exit demo mode
• Application Task - Waits for command to execute code

void application_task ( )
{
    termianl_read(  );
    fingerprint2_log( &log_write );
}

Additional Functions :

• void interrupt_init ( ) - UART interrupt initialization.
• void log_write ( uint8_t *str_buf, uint8_t str_type ) - Wrapper fucntion for driver.
• void termianl_read ( ) - Function for reading commands from terminal.
• void send_cmd ( char *cmd_buf ) - Function for compareing string to predefined commands and if match sending commands to device.
• void fp_reg_one ( ) - Function for registering fingerprint on specific index
• void fp_clr_one ( ) - Function for deleteing fingerprint on specific index

Note :

• Commands for terminal:
  • reg - to register one fingerprint
  • del - to delete one fingerprint
  • cmp - to compare fingeprint to data base
  • num - to get number of registerd fingerprints
  • fw - to get firmware version of device
  • ds - to get device status of device

Other mikroE Libraries used in the example:

• UART
• Conversions

Additional notes and informations

Depending on the development board you are using, you may need USB UART click, USB UART 2 click or RS232 click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.