C2-C6

Application Notes M16C/26A Group Sample Program (Message) 1. Summary This sample program receives the text data (message) input from the keyboard of a PC and shows the message on liquid crystal display while at the same time writing it into the internal flash memory by using the Renesas Starter Kit for M16C/26A (R0K33026AS000BE). (Straight type) Received data The extension board used here is a product from PI System Co., Ltd. 2. Introduction Microcomputers: M16C26A The example described in this document applies to the microcomputers listed below: This sample program runs on the Renesas Starter Kit for M16C/26A (R0K33026AS000BE). Prepare an extension board available for the Renesas Starter Kit or create a circuit similar to the one shown in the example circuit on page 14 and then connect it to the Starter Kit. This program uses RSK_LIB. For details about RSK_LIB, see the RSK_LIB reference manual. (RSK_LIB is the library software provided for use with the Renesas Starter Kit for M16C/26A.) REJ05B0816-0110 Rev.1.10 2007.11 Page 1 of 17 M16C/26A Group Sample Program (Message) 3. Port Arrangement The terminal reception serial port is the facility mounted on an extension board for the Renesas Starter Kit. To use this facility, con LCD Terminal data reception P71 P91 P90 P63 P62 P61 P60 LCD E LCD RS LCD D7 LCD D6 LCD D5 LCD D4 10MHz Xin P83 M30260F8AGP REJ05B0816-0110 Rev.1.10 2007.11 Page 2 of 17 M16C/26A Group Sample Program (Message) 4. Operational Outline stored in the internal flash memory. When a character is input to HyperTerminal (keyboard of a PC), the input character is shown on liquid crystal display and at the same time Connect the serial port (RS-232C) of a PC and the D-sub connecter on the microcomputer side with a straight cable. When characters are input to HyperTerminal, the input characters are shown on liquid crystal display on the microcomputer side. If while in this state SW1 is depressed, the characters shown on liquid crystal display are written into the internal flash memory of the microcomputer. The result of a write operation is shown on liquid crystal display, indicating whether the characters have been successfully written in. Then, when the reset switch is depressed, the data written into memory immediately before that is redisplayed on liquid crystal display. Up to 16 characters can be displayed, not including BS and TAB codes. D-sub connector Straight cable A,B,C,D,E,F ABCDEF A B C D E F Liquid crystal display (LCD) Internal flash memory BLOCK A 0F800h Personal computer (PC) M16C26A SW1/BOOT 0F810h When SW1 is depressed, the data displayed on LCD is saved in the internal flash memory. The operation described above is accomplished using the following microcomputer facilities: • Timer A0 (timer mode, main 2 ms cycle) This timer counts 2 milliseconds using the main clock of the microcomputer as the count source. It is used as the basic timer of RSK_LIB. Time management and LCD display management are performed using this timer. • UART2 (clock-asynchronous serial I/O mode, data reception) It produces a transfer clock from the main clock of the microcomputer. The data transmitted via HyperTerminal is received using this clock. REJ05B0816-0110 Rev.1.10 2007.11 Page 3 of 17 M16C/26A Group Sample Program (Message) 5. Operational Specification (1) Reset switch depressed (1) Immediately after the reset switch is depressed, a message if any saved in the data flash area is displayed. If no messages are saved in the data flash area (data = 0xff), nothing is displayed. (2) The data received from the terminal is displayed. Communication format Baud rate: 9,600 bps (In microcomputer, set at 9,615 bps) Stop bit: 1 Parity: None Number of characters received: 16 (Only up to 16 characters are accepted) Received character code (written in ASCII) Control code TAB (0x09): Clear the displayed data Clear the entire received string BS (0x08): Backspace Delete one character (3) Press SW1 to write the currently displayed message into the data flash. (4) The result of a write to the data flash is displayed for 1 second. When successfully written: Displayed as “Program success” When erase error occurred: Displayed as “Erase error” When program error occurred: Displayed as “Program error” (5) TAB code is received, by which the display is cleared. (6) After the reset switch is depressed, the saved data is displayed. (5) TAB code received P r o g r a s m s (4) Write result displayed a i b c (2) Character code received (3) SW1 depressed d e f g h (data written) succe (6) Reset switch depressed (saved data displayed) a i b c d e f g h REJ05B0816-0110 Rev.1.10 2007.11 Page 4 of 17 M16C/26A Group Sample Program (Message) 6. Definition of the RSK Functionality and the RSK_LIB APIs and Common Functions Used by Message Operation 6.1 Definition of the RSK Functionality RSKdefine.h file In this application, the following functionalities (those shown in red) are set. /********************************************************* The boot information on CPU is defined Usually, this mode is used *********************************************************/ //#define _CPU_M16C26A_NORMAL_MOD /* Use in low power mode can be performed. */ //#define _CPU_M16C26A_32KHZ_MOD /* Use of access of a flash can be performed. */ #define _CPU_M16C26A_DATAFLASF_USE /******************************************************** The hardware function which RSK supports is chosen /********************************************************/ //#define _USE_KEY //#define _USE_BUZZER //#define _OPTION_USE_AD #define _OPTION_USE_COM_RX //#define _OPTION_USE_COM_TX //#define _OPTION_USE_INFRAEDRX //#define _OPTION_USE_INFRAEDTX #define _OPTION_USE_SW //#define _OPTION_USE_LED //#define _OPTION_USE_IO Individual definition of each selected functionality #if defined _OPTION_USE_SW #define _OPTION_USE_PUSHSW1 //#define _OPTION_USE_PUSHSW2 //#define _OPTION_USE_PUSHSW3 #endif REJ05B0816-0110 Rev.1.10 2007.11 Page 5 of 17 M16C/26A Group Sample Program (Message) 6.2 APIs and Common Functions Used ApiStatusType RL_SetTimerReq( unsigned int TimerValue, char TimerMode, int *TimerNo, int *ERcode ); ApiStatusType RL_StartTimer( int TimerNo, int *ERcode ); ApiStatusType RL_CheckTimer( int TimerNo, int *ERcode ); ApiStatusType RL_CancelTimer( int TimerNo, int *ERcode ); ApiStatusType RL_Putc_Lcd( char Ylocation, char outc, int *ERcode ); ApiStatusType RL_Putc_LcdLoc( char Xlocation, char Ylocation, char RvTime, char outc, int *ERcode ); ApiStatusType RL_Open_Com( int bitlenght, int stopbit, int parity, int bps, int *ERcode ); ApiStatusType RL_Getc_Com( char *ComRxChar, int *ERcode ); ApiStatusType RL_GetSwPort( char PortNo, char *Indata, int *ERcode ); void RL_ErrorHook( int FuncNo, int ErrorNo ); For details about the APIs and common functions used by the sample program (message), see the Renesas Starter Kit Library V.1.00 Reference Manual. REJ05B0816-0110 Rev.1.10 2007.11 Page 6 of 17 M16C/26A Group Sample Program (Message) 7. Flowchart Message Clear display on LCD Initialize serial I/O Load into flash Show flash data Wait for first character received Process received character display Wait for first character received Process received character display NO SW1 detected? YES Write received character into flash REJ05B0816-0110 Rev.1.10 2007.11 Page 7 of 17 M16C/26A Group Sample Program (Message) 8. 1 Tutorial Launch the HEW by double-clicking its icon. 2 Change the session name from “default Session” to “SessionM16C_E8_System.” REJ05B0816-0110 Rev.1.10 2007.11 Page 8 of 17 M16C/26A Group Sample Program (Message) 3 Select “M30260F8A” for Device. Select “Download emulator firmware” for Mode. REJ05B0816-0110 Rev.1.10 2007.11 Page 9 of 17 M16C/26A Group Sample Program (Message) Check the box labeled “Power supply is carried out. (MAX 300mA)” and then select “5.0V.” REJ05B0816-0110 Rev.1.10 2007.11 Page 10 of 17 M16C/26A Group Sample Program (Message) 4 In the program and the work RAM text boxes of Firmware Location Address, enter “FA0” and “0B8” respectively. Leave the box labeled “Debug a program using the WDT” unchecked. REJ05B0816-0110 Rev.1.10 2007.11 Page 11 of 17 M16C/26A Group Sample Program (Message) 5 Choose Download from the Debug tab and download a module. The upper-side choices for Download show the location from which a project was downloaded. REJ05B0816-0110 Rev.1.10 2007.11 Page 12 of 17 M16C/26A Group Sample Program (Message) 6 Click “Start after Reset” to start program execution. 7 Please do "Cancellation" when "The file is opened" window opens. REJ05B0816-0110 Rev.1.10 2007.11 Page 13 of 17 M16C/26A Group Sample Program (Message) 9. Example Circuit 10. Part List Part name D-sub connector RS232C driver Ceramic capacitor Chip resistor PCB header R3,R4 JA1,JA2 2 2 ROHM Molex MCR10EZHF103 10-88-1261 10k 26pin 1/8W, 5% Male, 2-row, vertical type Part No. J1 U3 C2 - C6 Q’ty 1 1 5 Maxim Panasonic MAX3221ECAE ECJ-1VF1H104Z 100n Manufacturer Type number Value 9pin Remark Male REJ05B0816-0110 Rev.1.10 2007.11 Page 14 of 17 M16C/26A Group Sample Program (Message) 11. Web Sitet Renesas Technology Web site http://www.renesas.com/ REJ05B0816-0110 Rev.1.10 2007.11 Page 15 of 17 M16C/26A Group Sample Program (Message) Revision History Rev. 1.00 1.10 Date of issue 2006.06.30 2007.11.29 Content of revision Page First revision issued RSK_LIB APIs supported Points REJ05B0816-0110 Rev.1.10 2007.11 Page 16 of 17 M16C/26A Group Sample Program (Message) REJ05B0816-0110 Rev.1.10 2007.11 Page 17 of 17