Program design based on ATMEGA16 microcontroller control LCD display

After mastering the control of the LCD, we need to integrate the LCD into the password storage box to make it an independent system. In this issue, there is a source program for controlling the liquid crystal display in this issue of the disc, and copy the ICD.c and LOD.H to the 7th period routine psmanager, and open the project Psrnanager with ICCAVR, then Add ICD.C and ICD.H, as shown below, respectively. Remove the following code in ICD.C: / * Clock is 8MHz * / Void delay_1us (void) { ASM ("NOD"); } Void delay_us (unsigned int itimes) { Unsigned int itemp; For (itemp = 0; itemp { DELAY_1US (); } } / ** / This is because the above two functions have been defined in the delay.h file included in ICD.C, "# include" delay.h "statement. Then add a statement "#include" icd.h "in main.c, so you can call all LCD-related functions in the main.c file. Add the initialization of the LCD in main.c. DDRD = 0xFF; Portd = 0xff; DDRB = 0xFF; Portb = 0xff; // LCD Control Pin Initialization LCDReady (); LCDinit (); // LCD initialization completion After completing the initialization of the LCD, the next step in the next step of the LCD is implemented during each process of the system. First consider the boot screen, you can display "PAMWORD MAN-AGER V1.0" 2 seconds (see Figure 2), place this part program after the password storage box engine is initialized, as follows: UART_INIT (); Charswrite (0,1, "passwordmanager); Charswrite (6, 2, "v1.0"); DELAY_MS (2000); // 2 seconds delay After entering the While primary loop, you must first make an initial one for the LCD. To remove the content displayed on the LCD. Then display "please INPUTPW; ", waiting for user input operation. Clearlcd (); // clear screen LCD DELAY_US (80); // Waiting for the clear screen instruction to complete Charswrite (0,1, "pleaseinputpw:"); / / ICD display "PleaseInputPw:" Next procedure starts waiting and handles the user to make a keypad input. When the user performs password input, the user enters a password, and should display a "*" number at the LCD. This part of the code should be added to the inspection keyboard input of the password storage box project, pay attention to the * number to display the second line of the LCD, as follows: While (CBufferps [ctemp] == 0xAA); // Return 0xAA Description Keyboard No action PUTCHAR (CBufferps [ctemp]); Charswrite ((0 + CTEMP), 2, "*"); // in the corresponding Location display * After the user completes the input, whether the password entered correctly, Need to clear the screen again, ready to display the next content. CTEMP = check_ps (); // This function is executed. Say Ming user input to complete 6-digit password Clearlcd (); // clear screen LCD DELAY_US (80); // Waiting for the clear screen instruction to complete If the user enters the correct, the data stored in the EEPROM should be displayed in turn, and then "pressaiKeyToExit ...", wait for the user to enter any key to exit. Pay attention to it when you are displayed, 1. If you encounter '%', you should read a group of passwords, you should wait for several seconds to make it easy for users to watch the password. 2. If you encounter '

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