Husky11 Development Board Getting Started Manual
Contents
1. top positions for connecting ACIA 68B50 to USB port Any attempt to write to the locations 2200 25FF will have unpredictable results and must be handed with care in user programs Because most textbooks are written for BUFFALO monitor the Husky11 board comes with both BUFFALO monitor and Wytec monitor installed in U2 If you have worked with the BUFFALO monitor in the past you can use the board right away In fact if you use the BUFFALO monitor with this board the board becomes a standard 68HC11 EVB board just like many other EVBs on the market today except it offers more on board peripherals Before testing the board with BUFFALO monitor place a jumper in the middle position labeled with BUFL which stands for BUFFALO Monitor of J15 and another jumper on the left position labeled with TRACE of J22 To test the board follow the steps 1 through 6 below Step 1 Plug the AC adapter into a wall outlet and plug the DC plug at the other end into the DC jack on the lower right corner of the Husky11 board During power up the RESET LED should flash twice and all other LEDs must be off the speaker should chirp once If the chirp is too soft you can remove the sticker on the speaker to increase the volume and the LCD should display the following message HUSKY11 TRAINER BUFFALO V4 02 If this does not occur turn over to the Questions amp Answers section of the Wytec user manual Step 2 Plug th2. CAEp2IDE If you want to make a shortcut for AsmIDE on the Desktop this is the correct way to do so If you don t follow this method you may have a problem running your program Never drag the AsmIDE exe to the desktop folder The default setting of AsmIDE for the Husky11 board is created in a text file named c Ep2IDE AsmIDE ini In the future if you get lost with all the changes you always can copy this file into the folder named c Ep2 IDE GETTING STARTED with BUFFALO Monitor The Memory Map with the BUFFALO monitor 0000 00FF 0000 01 FF 002D 00FF 1000 103F 1003 1004 2200 23FF 2201 2203 2200 2202 2400 25FF 2400 2401 2800 2FFF 3000 7FFF 8000 DFFF E000 F FFF On chip 256 byte RAM for the 68HC11A1 On chip 512 byte RAM for the 68HC11E1 On chip RAM used by BUFFALO monitor On chip 64 control registers including port B 1004 and port C 1003 Port C for DIPswitch Port B for LEDs 65C22 Port F LCD port DDRF Port G Keypad port DDRG 68B50 UCTRL USTAT UART External device CS on the pin40 of J1 20K EEPROM of U3 RAM for user code or data BUFFALO monitor firmware in U2 The important default Jumper Settings J9 Set for RUN left side J15 Set for BUFL middle position J22 The jumper is installed in the left side for enabling single step function J31 The jumper is installed in the bottom position for USB interface J32 Both jumpers are installed in the
3. wait for a few seconds before re plug the USB cable into the P2 After cycling USB connection the PC may re establish the USB communication If this does not work you need to reset your PC This problem will happen to any IDE so in order to avoid it always close the AsmIDE before unplugging the USB cable The screen is divided into two windows The top window is for editing your source code and the bottom window is shared by the message window and the terminal window Step 5 You only need to use three commands from the AsmIDE for your 68HC11 development work Use the File command to edit your source code the Build gt Assemble command to assemble your source code and the Build gt Download command to communicate with the Husky11 board In the View gt Option gt Terminal Window Options menu set the COM port as 1 or 2 to match the COM port number that is assigned to the USB port by Device Manager in control panel Also set the COM port options at 9600 N 8 1 and check the enable the terminal window box which will disable Wytec hc11 tools In the View gt Option gt Assembler menu make sure that the chip family is 68HC11 and you can also see that the default assembler name for the hc11 is as11 exe If you would like to use your own assembler you can replace the as11 exe bat with the name of your new assembler If the assembler detects an error it will show the error s line number in the file along with an error message If t
4. SCI the 68HC11 s PD1drives IR transmitter and 68HC11 s PDO receives data from IR receiver The PDO and PD1 can be general purpose I O pins or SCI When jumpers are placed in the low position labeled with PA26 the 68HC11 s PA6 drives IR transmitter and PA2 receives data from IR receiver Enables the 7 segment LED display driver U11 74HC367 Enables LCD backlight The jumper can be removed for extending the life of the backlight External 12V programming voltage source U3 EEPROM write protect place a jumper in the left position to disable write protect EEPROM programming Place a jumper in the right position to enable EEPROM programming Enables BUFFALO trace function When jumper is in the left position PA3 is connected to XIRQ to enable single stepping operation in BUFFALO monitor mode When jumper is in the right position PA3 is disconnected from the XIRQ Servo motor power select The jumper is placed in the top position if servos are powered by the on board VCC 5V The jumper is placed in the bottom position if servos are powered by an external 5V power supply at the terminal block T4 Enables RGB LED VCC for H bridge driver U19 SN754410N The H bridge driver and 7 segment LED display should not be enabled at the same time Move the jumper from J18 to this header only if H bridge driver is used When H bridge driver is not used move this jumper back to J18 DC motor
5. power select The jumper is placed in the top position if motors are powered by the on board unregulated 9V VIN The jumper is placed in the bottom position if motors are powered by external voltage at pin 1 of the terminal block T3 18 J30 J31 J32 J33 P2 P4 TTL logic level of the ACIA 68B50 In order to use this port the jumper on the J31 must be set in the top position The jumper is installed in the bottom for USB interface or in the top for TTL interface Both jumpers are installed in the top positions for connecting ACIA 68B50 to USB port Both jumpers are installed in the bottom positions for connecting SCI 68HC11 to USB port TTL logic level of the SCI for user application In order to use this port both jumpers on the J32 are installed in the bottom positions and the jumper on the J8 must be set in the second position from the top labeled with 232 X Y X Accelerometer module interface or IR distance sensor GP2D12 interface Connects CA2 of the U1 6522 to relay circuit Connects light sensor Q3 to PE4 of ADC Connects temperature sensor U21 to PE5 of ADC PA3 OC5 output for servo applications PA4 OC4 output for servo applications PA6 OC2 output for servo applications PA4 OC1 output for servo applications 60 pin male connector for I O ports EVB EVBU compatible 60 pin female connector for I O ports EVB EVBU compatible USB port for
6. 0 25FF 2400 2401 2800 2FFF 8000 AFFF B000 F FFF Single Board Computer application The Memory Map in Single Board Computer application On chip 256 byte RAM for the 68HC11A1 On chip 512 byte RAM for the 68HC11E1 Wytec monitor in U2 some subroutines are callable from user programs Wytec monitor in U2 some subroutines are callable from user programs On chip 64 control registers including port B 1004 and port C 1003 Port C for DIPswitch Port B for LEDs 65C22 Port F LCD port DDRF Port G Keypad port DDRG 68B50 UCTRL USTAT UART External device CS on the pin40 of J1 U4 RAM for user data User code in U3 20K usable EEPROM The important Jumper settings for SBC J9 Set for RUN top position J15 Set for U3 bottom position Program external EEPROM in U3 and 512 bytes of internal EEPROM You can program EEPROM chip U3 and 512 bytes of internal EEPROM B600 B7FF under control of the Wytec debugger WBUG11 Use the Load command as described on page 10 of the Wytec user manual The instructions will be shown on the screen when Load command is entered If you want to use the board as an SBC you can program your application s19 file into EEPROM U3 After programming the chip move the jumper to the bottom position of J15 It will completely bypass both the Wytec s monitor and the BUFFALO monitor The address range of U3 is changed from 3000 7FFF to B000 FFFF and the address range of U4 32K RA
7. E family are available as user DATA RAM The BUFFALO monitor uses the RAM locations at 2D FF The 23K memory locations from 8400 to DFFF are available to user program CODE or DATA In assembly language you specify the starting address of your CODE by an ORG statement You can start DATA RAM at address 00 with the statement ORG 0 followed by RAM variables as shown below ORG 0 TEMP RMB 1 reserve one byte of RAM for temp storage XTEMP RMB 2 reserve two bytes of RAM for temp storage If your program is small say less than 4K you can start your program at address D000 with the statement ORG D000 followed by your program as shown below ORG D000 LDS 8FFF initialize stack point It will assemble your source program and generate hex code within 4K locations from D000 to DFFF If your program is larger you can change ORG D000 to ORG C000 or ORG A000 You cannot use ORG E000 or ORG F000 because the BUFFALO monitor occupies the highest 8K locations SE000 FFFF With the BUFFALO monitor the Husky11 board cannot abort your program if it s hung in a loop The only way to abort it is to reset the board The problem with resetting the board is that you would not know where the 68HC11 was hung It also would leave SWI instructions on all breakpoint addresses You will have to re download your s19 file all over again Here is a very simple program but it s complete It will flash the PB7 LED when it s running For a
8. Husky11 Development Board Getting Started Manual Version 2 70 for Husky11 Rev A board Table of Contents GETTING STARTED with BUFFALO Monitor GETTING STARTED with Wytec monitor and WBUG11 Single Board Computer application ON BOARD HARDWARE BUFFALO I O ROUTINES IMPORTANT NOTES The Husky11 board a low cost and high performance development board provides real time emulation for the Freescale 68HC11microcontroller A and E families It offers all useful features of the Freescale EVB board with BUFFALO monitor and adds numerous enhancements at low cost It combines a complete 68HC11 development system an advanced trainer a reliable 68HC711E9 E20 programmer and a versatile Single Board Computer into a single package For engineers it serves as a WICE in circuit emulator development system a Freescale EVB EVM and EVS replacement a convenient prototype platform and a low cost single board computer For students it acts as a user friendly microcontroller trainer It is as powerful as a high priced real time in circuit emulator but it is as affordable as a low cost microcontroller evaluation board The Husky11 includes easy to use and user friendly IDE software which runs under Windows 95 98 2000 XP and Vista It offers fast file transfer single stepping breakpoints data watch for memory and registers symbolic debugging compatibility with most assemblers and compilers and user program termination with lt Esc gt key O
9. I O port that can be accessed via J2 or J6 The pinouts of the J2 is as follows Pint PF7 Pin2 PG7 Pin3 PF6 Pin4 PG6 Pin5 PF5 Pin6 PG5 Pin7 PF4 Pin8 PG4 Pin9 PF3 Pin 10 PG3 Pin 11 PF2 Pini2 PG2 Pin13 PF1 Pin14 PG1 Pin 15 PFO Pin 16 PGO Pin 17 VCC Pin18 VCC Pin 19 GND Pin20 GND The pinouts of the J6 is as follows Pini PGO Pin2 PG1 Pin3 PG2 Pin4 PG3 Pin5 PG4 Pin6 PG5 Pin7 PG6 Pin8 PG7 The following signal definitions only apply to Wytec 4X4 membrane keypad Wytec 4X4 membrane keypad connections PGO PGI PG2 PG3 Col_0 Coll Col_2 Col3 PG4 Row 0 PG5 Row 1 PG6 Row 2 PG7 Row 3 PGO connects COLO of the keypad via pin 1 of the 8 pin keypad header J6 PG1 connects COL1 of the keypad via pin 2 of the 8 pin keypad header J6 PG2 connects COL2 of the keypad via pin 3 of the 8 pin keypad header J6 PG3 connects COL3 of the keypad via pin 4 of the 8 pin keypad header J6 16 PG4 connects ROWO of the keypad via pin 5 of the 8 pin keypad header J6 PG5 connects ROW1 of the keypad via pin 6 of the 8 pin keypad header J6 PG6 connects ROW2 of the keypad via pin 7 of the 8 pin keypad header J6 PG7 connects ROWS of the keypad via pin 8 of the 8 pin keypad header J6 The PGO PG7 has a 100K pull up resistor in each line The keypad scan routine sets PG3 low PGO PG1 PG2 high and then test the PG4 PG7 If no key is down PG4 PG7 remain high If PG7 low the key 15 is down If PG6 low the key 11 is down If PG5 lo
10. IDE so in order to avoid it always close the AsmIDE before unplugging the USB cable The screen is divided into two windows The top window is for editing your source code and the bottom window is shared by the message window and the terminal window Step 5 To invoke AsmlIDE right click the Start button then left click Explorer then left click on C Ep2IDE and finally double left click on AsmIDE exe If you have created a shortcut icon on the desktop just double click the AsmIDE icon on the desktop Step 6 The default settings of the AsmIDE for the Husky11 board are created in a text file named c Ep2IDE AsmIDE ini In the future if you lose with all the changes you always can copy the original file into the folder named c Ep2 IDE In the View gt Options gt Wytec hc11 tools menu you must check the Wytec Tools Enabled box to use the Wytec Debugger software WBUG11 You can change the COM port number but you do not have to change its baud rate because the WBUG11 will set it at 38 4K for you Please note that the default debugger startup batch name is wbug11 exe not mydebug bat This is the change we have made from the original AsmIDE Step 7 All sample programs are debugged and tested for your convenience and they are located in the folder named c Ep2IDE Ex_WYTEC Here are steps to run your first sample program 1 Click the File button to load test asm from c Ep2IDE Ex_WYTEC to view the program 2 C
11. M is changed from 8000 FFFF to 8000 AFFF The program code will auto start from U3 after reset or power up You can only program U3 under the control of Wytec debugger WBUG11 and your application s19 file must be assembled in the address range of B000 FFFF The two highest addresses FFFE and FFFF in your program must be loaded with the starting address of the program Here are the steps to program U3 with the file test s19 Before programming the jumper on J15 must be placed in the WYTEC position and the jumper on J9 must be placed in the RUN position not the PRG position 1 Move the jumper on J21 to the right position to enable EEPROM write 2 Enter Load command and select the option E to download an s19 file into U3 12 Enter test s19 as the file name to be downloaded When the programming cycle starts the PBO PB7 LEDs will march from left to right The programming is done when the LEDs stop marching Move the jumper on J21 to the left side to write protect U3 Pl OF CO BG Move the jumper on J15 to the bottom position labeled with the U3 8 Press the reset button your application program should run Before programming you have to make sure that the jumper on J21 is in the right side to enable EEPROM write otherwise the programming process will not continue After programming move the jumper to the left side of J21 to write protect the EEPROM otherwise the EEPROM could lose data quite easil
12. breakpoint addresses and the memory display addresses The assembler makes a default PAR file When you exit the debugger the debugger will update it by saving the current settings The PAR file is automatically saved after you exit a debugging session Also the Write command of the debugger can create a PAR file After invoking the Write command in the debugger it will prompt you to enter a choice among U S and P options Choose the P option and give a full file name such as test par It will make a PAR file for you The most useful feature of the PAR file is its ability to remember the TMSK2 register value Assuming you changed pre scale bits in the TMSK2 in the beginning of your source program the TMSK2 register can only be changed in the first 64 E cycles in expanded mode you have to use the Init command to change the TMSK2 register to match that value before running your program under the WBUG11 otherwise your program will not run When the PAR file is loaded it will generate a system reset and force the 68HC11 to take the new TMSK2 register value from the PAR file For more information see the Questions amp Answers section of the Wytec user manual 7 When the download is finished and you are prompted with Ep2711 gt Next the PC will reset the board During the reset there will be some communication between the PC and the board as shown by the UTX and URX LEDs If you enter the command too soon it could disrupt the communication a
13. cter is 00 instead of 04 LCD_INI initialize a 16x2 LCD display module LCD_LINE1 displays 16 characters on the first line of a 16X2 LCD display module LCD_LINE2 displays 16 characters on the second line of a 16X2 LCD display module SEL_INST selects instruction before writing a LCD module SEL_DATA selects data before writing a LCD module WRT_PULSE generates a write pulse for LCD module Jump Table 0800 RS485_RECV 0803 RS485_XMIT 0806 GET_DATE 0809 GET_TIME 080C OUTSTRGOO 080F LCD_INI 0812 LCD_LINE1 0815 LCD_LINE2 0818 SEL_INST 081B SEL_DATA 081E WRT_PULSE IMPORTANT NOTES The following are some important notes that you should know and they may save your time 1 Things to do if the board does not work Many little mistakes can cause a big problem especially for new beginners For instance you may debug your code in expanded mode but MODEB and MODEA are set for bootstrap mode If the jumper on J19 is missing LCD backlight won t work and if the jumper on J18 is missing 7 segment display won t be lit Before troubleshooting the board you must apply power to the board When pressing the reset button the LED should flash twice If it does not flash the board may not have 5V DC You can use a DMM to check voltage at the VCC test point Sometimes it may be caused by a bad AC adapter or the AC adapter may not even be plugged in 21 Sometime the Config register has a wrong value but the 68HC11 chip is st
14. d as a 68HC711E9 programmer but only under control of the Wytec debugger WBUG11 You must provide a regulated 12 V DC 30mA and also make sure that the program is fully debugged To activate the programmer click Build gt Wytec hc11 tools or click the debugger button on the toolbar that will bring up a small dialog window If the current downloaded s19 file is correctly shown in the dialog window click the Select this file button and then click the programmer button to program the 68HC711E9 The programming is done in bootstrap mode and the programming instructions will be displayed on the screen step by step The memory addresses range for the 68HC711E9 is from D000 to F FFF If your S19 file contains addresses outside of this range an error message will be generated and the chip will not be programmed If your assembler or C compiler generates an s19 file with some extra RAM addresses you must use an editor to delete those RAM addresses During the programming the data will be automatically verified The 52 pin PLCC socket is ZIF socket It will not last much longer than 100 insertions When the contacts of the PLCC socket are worn you can use a fine dental tool to pry up all contacts especially at corners a little bit to extend its life considerably 13 ON BOARD HARDWARE In expanded mode Port B and port C of the 68HC11 are used for address and data buses They are not available to user programs as I O ports but they ar
15. development work connects to a PC USB port 40 pin female connector for address and data ports Freescale 68HC11 EVM compatible MODEA and MODEB jumpers They are not used in debugging sessions They can be used for programming the 68HC711E9 OTP part in bootstrap mode or debugging in single chip mode 19 BUFFALO O routines Many 68HC11 books have example programs that access BUFFALO I O routines The BUFFALO O routines are located at FFAO FFCF When using it with the Wytec debugger WBUG11 the BUFFALO I O functions are duplicated at 0FA0O 0FCF Following are the BUFFALO I O routines function description and jumper table UPCASE WCHEK DCHEK INIT INPUT OUTPUT OUTLHLF OUTRHLF OUTA OUT1BYT OUT1BSP OUT2BSP OUTCRLF OUTSTRG OUTSTRGO INCHAR Jump Table 0FAO 0FA3 0FA6 0FA9 0FAC OFAF 0FB2 0FB5 0FB8 0FBB 0FBE 0FC1 0FC4 0FC7 0FCA 0FCD ORG 0FA0 convert the character in A to uppercase test the character in A for white space and returns with the Z bit set if Ais a white space Space comma tab test the character in A for white space and returns with the Z bit set if Ais a carriage return or white space Space comma tab initialize SCI is not needed with the Husky11 board reads PC keyboard input writes the character in the A to CRT display converts 4 most Significant Bit of A to ASCII and Writes it to CRT display converts 4 most Significant Bit of A to ASCII and Writes
16. e 68HC11 is defective To enter test mode you have to change the jumper on J15 to the top position to enable the Wytec monitor Then press the reset button momentarily while holding down the PAO switch to enter test mode The RESET LED should flash twice and the mode indicator EXP on the top line of the debugger screen should be changed to TST The crystal is not soldered to the board and it s held by two machine pins If you want to change the crystal just unplug it and replace it with a new frequency such as 9 8304 MHz Don t cut the crystal s leads too short If it s shorter than 14 its metal case could short the two machine pins 2 Always reset the board before downloading a new program If a previous application program that you ran was aborted then you may need to reset the board before downloading a new application program The reset action will disable the interrupt that was enabled by the previous application If the interrupt was caused by a timer and is not disabled the timer interrupt will continue even it s not called for in your new application program The result will be unpredictable 3 Keep folder name and file name not to exceed 8 characters when working under Wytec monitor The Wytec debugger is a DOS application so keep folder and file names short otherwise the debugger may not be able to find your application program 22
17. e USB cable to the USB jack P2 on the upper right corner of the Husky11 board Plug the other end of the USB cable into a USB port of your PC Make sure that the jumpers on the J31 and J32 are set correctly for USB interface for the ACIA 68B50 The header J33 is the 68HC11 SCI port in TTL interface that can be used by a user s application program Step 3 Press the reset button on the Husky11 board momentarily and the RESET LED which is located above the reset button should flash twice If it does not flash turn over to the Questions amp Answers section of the Wytec user manual Step 4 To invoke the AsmlIDE right click the Start button then left click Explorer and left click on C Ep2IDE and finally double left click on AsmIDE exe If you have created a shortcut icon on the desktop just double click the icon on the desktop Warning note Always plug the USB cable into Husky11 before invoking the AsmIDE and close the AsmIDE before unplugging the USB cable Otherwise the AsmIDE may hang up and you need to re establish the USB link again The Wytec debugger is a DOS program When the USB link is broken you will get an error message such as NTVDM has encountered a system error At that time you have to close the Wytec Debugger and AsmIDE then cycle the USB connection before re invoke the AsmIDE and Wytec Debugger In case the AsmIDE hangs up you need to close the AsmIDE first then pull the USB cable out the USB jack P2
18. e emulated by the PRU chip 68HC24 The PRU stands for port replacement unit The emulated port B is an output port and each port B pin is monitored by a LED indicator The emulated port C is a bi directional I O port and it is connected to an 8 position DIPswitch The DIPswitch is connected to GND via eight 4 7K resistors so it s not dead short to GND When port C is driven by external circuits the DIPswitch setting is ignored but it s better leave all 8 DIP switches in open positions when the port C is used as an outport port The PAO switch is used as a general purpose input switch except during power up During the initial power up pressing the RESET button momentarily while holding the PAO switch will force the 68HC11 to enter test mode In test mode the configure register can be modified The PA3 and PA4 headers are the outputs of Output Comparators 3 and 4 They can be used to drive robot servos Make sure that robot servos have their own power supply Port E is an 8 bit ADC or a general purpose input port The trimmer VR1 is connected to the PE7 input of the ADC port via the J10 The temperature sensor U21 is connected to the PE5 via J37 and the light sensor Q3 is connected to the PE4 via J36 An on board logic probe LED is connected to pin 55 of the female socket connector P1F and can be used to monitor high or low state at any point of the circuit as a logic probe It can be connected to VCC for the power indicator if you add a
19. e file extension such as test asm not just test NOTE Since the debugger is written in DOS folder name and filename should not be longer than 8 characters 3 Click Build gt Assemble or click the assembler button on the toolbar to assemble your code If your code has no errors it will generate an s19 file a listing file and a symbol file If the assembler detects an error the error message will show the line numbers of your source code that caused error Beware that sometime not very often but it does happen the freeware assembler may indicate a wrong error line in the file and the actual line that caused error may be one line off 4 Go to the lines with errors and correct them then go back to the step 3 until there are no errors 5 After your code is successfully assembled you can click Build gt Wytec hc11 tools gt select this file button to update the file c Ep2IDE Ep2IDE txt for the debugger 6 Close the dialog window and activate the WBUG11 from the task bar Press the F10 function key and the R option The debugger will automatically download 3 files namely YOUR_FILENAME S19 YOUR_FILENAME SYM and YOUR_FILENAME PAR The S19 file is the hex code The SYM file is the symbol file so you can use symbols in commands instead of hex numbers The PAR file is the parameter file that includes the EEPROM programming enable disable flag INIT TMSK2 OPTION and BPROT register values The PAR file also includes
20. erate sound You can press the ESC key on PC keyboard to stop the program If you stop the program the speaker may generate clicking noise because the output comparator is still interrupting the 68HC11 To stop the clicking noise you will need to press the reset button momentarily All example programs are fully debugged so the assembler won t generate an error If you have an error in your program you must correct it before an s19 file can be generated You can try to run a different example program later after you have finished reading this manual You should always press the reset button before downloading a new program because a new program may not work if an interrupt was enabled by a previous program Step 8 To run another program activate the AsmIDE from the task bar at the bottom of the screen this will minimize the debugger window Click Build gt Wytec hc11 tools or click the debugger button on the toolbar that will bring up the Wytec hc11 tools dialog window Use the browser to choose the s19 file you want to download such as ex2 s19 then click the Select this file button and close the dialog window Do not click the Debugger button because the debugger was already invoked Now activate the WBUG11from the task bar and press the F10 function key and R option The ex2 s19 will be automatically downloaded At the prompt Ep2711 gt type g start lt Enter gt Warning Do not attempt to have more than one debug
21. ger window open at the same time If you do your PC may lose communication with the board so you have to close the extra debugger window Software development with the Wytec s monitor The steps to create your source code as follows 1 Click the File button to open an existing file or create a new file The memory locations from 00 FF for the A family or 00 1FF for the E family are available as user DATA RAM The Husky11 board does not use the RAM locations at 2D FF which are used by BUFFALO monitor The 31K memory locations from 8400 to FFFF are available as user program CODE or DATA In assembly language you specify the starting address with an ORG statement You can start DATA RAM at address 00 with the statement ORG 0 followed by RAM variables as shown below ORG 0 TEMP RMB 1 reserve one byte of RAM for temp storage XTEMP RMB 2 reserve two bytes of RAM for temp storage If your program is small say less than 4K you can start your program at address F000 with the statement ORG F000 followed by your program as shown below ORG F000 LDS FF Initialize the stack point It will assemble your source program and generate hex code within 4K locations from F000 to FFFF If your program is larger you can change the ORG F000 to ORG E000 or ORG CO000 You can use ORG E000 or ORG F000 because there is no BUFFALO monitor in the highest 8K locations E000 F FFF After fully debugged your code you do not have
22. good programming practice you should always place a LDS instruction in the first line of your code PB7 EQU 80 bit 7 of port B FLS_RATE EQU 8B00 change this number will change LED flash rate ORG D000 START LDS 8FFF LDX 1000 X register points to the register block BACK BSET 4 X PB7 turn on the PB7 LED by setting PB7 1 JSR DELAY BCLR 4 X PB7 turn off the reset LED by resetting PB7 0 JSR DELAY JMP BACK DELAY LDY FLS_RATE DLY DEY BNE DLY RTS END 2 Save your file frequently while editing If you are creating a new file and giving the file a name to save enter the file name including the file extension such as test asm not just test 3 Click Build button gt Assemble or click the assembler button on the toolbar to assemble your code and generate an s19 file If the assembler detects an error the error message will show the line numbers in your source code that caused errors Beware that sometimes not very often but it does happen the freeware assembler may indicate a wrong error line in the file and the actual line that caused error may be one line off from the error line number WARNING The free assembler will generate an error on the BSET BCLR BRSET and BSCLR instructions if more than one commas are used in those instructions For instance BSET 0 X 20 or BRSET 0 X 20 F000 is illegal but BSET 0 X 20 or BESET 0 X 20 F000 is OK You have to use a space character to separate fields not a co
23. he terminal options are set correctly the jumper is installed on the BUFL position of J15 and the com port number is correct you should see the following sign on message every time the reset button is pressed If you do not see this the bottom window may be set for message window Click the terminal button in the bottom window to enable the terminal window display HUSKY11 BUFFALO 4 02cc Bit User Fast Friendly Aid to Logical Operation Press the Enter key you will get the BUFFALO monitor prompt gt Step 6 All sample programs are debugged and tested for your convenience They are located in the folder named c Ep2IDE Ex_BUFFL Here are the steps to run your first sample program 1 Click the File button to load test asm from c Ep2IDE Ex_BUFFL to view this program 2 Click Build gt Assemble or click the assembler button on the toolbar to assemble your code and generate the test s19 file In order to display assembler messages the bottom window is switched to the message window 3 Click the terminal button of the bottom window to activate the terminal window and make sure that the BUFFALO monitor prompt gt is shown on the terminal window If this is not the case press the Enter key 4 At the prompt gt type LOAD lt Enter gt 5 Click Build gt Download and select the file c Ep2IDE Ex_BUFFL test s19 to download it Note If the top window is not loaded with a file clicking the Build button will prompt
24. ill good To determine if the board malfunctions you can restore the board jumper settings to the original default settings when you receiving the board The default settings are as follows J5 Mode selector No jumper is installed for expanded mode J8 HC11 SCI receiver source selector The jumper is in bottom position labeled with IR J9 RUN PRG jumper is used for selecting an operating mode The jumper is placed in up position for debugging your code J15 Monitor selector The jumper is placed in middle position for BUFFALO monitor J17 IR transceiver control source selector The jumpers are placed in up position labeled with SCI the HC11 s PD1 drives IR transmitter and the HC11 s PDO receives data from IR receiver J22 Enables BUFFALO trace function The jumper is placed in left position J31 The jumper is installed in the bottom position for USB interface J32 Both jumpers are installed in the top positions for connecting ACIA 68B50 to USB port If all above settings are correct when you press the reset button the RESET LED should flash twice If it does not occur you can try to enter test mode to determine if the 68HC11 chip is bad Sometimes the Configuration register has a wrong value but the 68HC11 chip is still good and will work in test mode In test mode it will automatically re program the value of the Configuration register to 0D If you cannot enter test mode th
25. it to CRT display output ASCII character in A to CRT display converts the binary byte that is pointed to by X register to 2 ASCII bytes and write them to CRT display its OUT1BYT followed by sending a space to CRT display converts the binary word 2 bytes that is pointed to by X register to 4 ASCII bytes and write them followed a space to CRT display write carriage return line feed to CRT display its OUTCRLF followed by writing the ASCII string that is pointed to by X register to CRT display and until character is 04 its OUTSTRG without writing leading carriage return amp line feed to CRT display waits for an ASCII character from keyboard and put it in accumulator A UPCASE WCHEK DCHEK INIT INPUT OUTPUT OUTLHLF OUTRHLF OUTA OUT1BYT OUT1BSP OUT2BSP OUTCRLF OUTSTRG OUTSTRGO INCHAR 20 We have added several I O routines in the beginning of our Wytec monitor Following are the Wytec monitor I O routines function description and jumper table starting at 0800 ORG 0800 RS485_ RECV sets RS485 port to receiver mode RS485_XMIT sets RS485 port to transmitter mode GET_DATE X register points to a 10 byte RAM block before calling this subroutine it returns date information of host PC in the format of MM DD YYYY GET_TIME X register points to an 11 byte RAM block before calling this subroutine it returns time information of host PC in the format of HH MM SS AM or HH MM SS PM OUTSTRGOO Its OUTSTRGO except the ending chara
26. jumper between pin 55 and pin 57 U18 74HC14 generates 38 4K baud for U5 68B50 and it also provides 38KHz square wave to IR transmitter U9 SN75176 converts the TTL signal from the SCI to RS485 differential signals and visa versa The terminal block T1 used to daisy chain many Husky11 boards together for a network application Two I O ports port F and port G are added through U1 VIA 65C22 These are bi directional ports Port F and port G are port A and port B of the 65C22 respectively The address locations for all ports are as follows PORTF 2201 DDRF 2203 1 OUTPUT 0 INPUT PORTG 2200 DDRG 2202 1 OUTPUT 0 INPUT CA2 output from the 65C22 is used to drive the relay K1 RTS from the 68B50 is used to control direction of RS485 communication If RTS 0 RS485 port U9 DS75176 is set for receiver port If RTS 1 RS485 port U9 DS751 76 is set for transmitter port RTS 0 RS485 receiver port RTS 1 RS485 transmitter port For users convenience there are two subroutines added to control RS485 User can call RS485_ RECV at 0800 to reset RTS to 0 or RS485_XMIT at 0803 to set RTS to 1 14 The following are all I O subroutines in Wytec monitor that are callable from a user s application program ORG 0800 Husky11 Rev C board I O routines RS485_RECV RMB 3 enables RS485 receiving mode RS485_XMIT RMB 3 enables RS485 transmitting mode GET_DATE RMB 3 gets current date from PC GET_TIME RMB 3 gets current
27. lick Build gt Assemble or click the assembler button on the toolbar to assemble your code and generate the test s19 file 3 Click Build gt Wytec hc11 tools or click the debugger button on the toolbar that will bring up a small dialog window You can see the file to be downloaded is c Ep2IDE Ex_WYTEC test s19 The current download s19 file name is always updated by the assembler 4 Now you MUST click the Select this file button which will store the file name test s19 into a text file named c Ep2IDE Ep2 DE txt The debugger can automatically download the test s19 by reading the Ep2IDE txt when it is invoked This is a very important step and you must do it when you want to debug a different program 5 Click the Debugger button and the debugger will automatically download the test program TEST s19 The Programmer button is used to program the on chip EPROM of a 68HC711E9 and you can ignore it for the time being 6 At the prompt Ep2711 gt enter g start the label is case sensitive lt Enter gt It will run the TEST program in real time The program will test the switches scan keypad send a message to the LCD display emulate an IR proximity sensor adjust LED display brightness generate music and shift number 0 to F on seven segment LED display At first you can press the PCO PC1 or PC2 pushbutton switch and see that the PBO PB1 or PB2 LED follows the state of the pushbutton switch and then press the PAO switch to gen
28. mma 4 Go to the lines with errors and correct them then go back to the step 3 until there are no errors GETTING STARTED with Wytec monitor and WBUG11 The Husky11 board is a standard EVB board with the BUFFALO monitor but it s an easy to use and powerful In circuit Emulator type of development system when it s under the control of the Wytec Symbolic Debugger WBUG11 If you don t use the WBUG11 you will not be able to exploit all of the features Once you have used the WBUG11 you probably would not want to use the BUFFALO again The Memory Map with the Wytec monitor 0000 00FF 0000 01 FF 0800 0FFF 1800 1F FF 1000 103F On chip 256 byte RAM for the 68HC11A1 On chip 512 byte RAM for the 68HC11E1 Wytec monitor firmware in U2 Wytec monitor firmware in U2 On chip 64 control registers including port B 1004 and port C 1003 1003 Port C for DIP switch 1004 Port B for LEDs 2200 23FF 65C22 2201 Port F LCD port 2203 DDRF 2200 Port G Keypad port 2202 DDRG 2400 25FF 68B50 2400 UCTRL USTAT 2401 UART 2800 2FFF 3000 7FFF 8000 83FF 8400 FFFF External device CS on the pin40 of J1 20K EEPROM of U3 RAM used by Wytec monitor RAM for user code or data The important Jumper Settings J9 Set for RUN top position J15 Set for Wytec monitor top position J22 The jumper is installed in the left side for enabling single step function in BUFFALO monitor mode If a user program d
29. n the VCC drops below 4 6V Do not apply a DC voltage higher than 9V to this board People often use different terminology In our product menus Download means to transfer a file from the PC to the EVBplsu2 board while Upload means to transfer a file from Husky11 board to PC Through out the manual left click means that you click the left button of the mouse and right click means that you Click the right button of the mouse Install Ep2IDE software If you have already installed the Ep2IDE for our WICE emulator or one of our EVBplus boards on your hard drive you must rename the current folder from c Ep2IDE to c Ep2IDE_old before installing new software The installation is automated by running the SETUP BAT It will OVERWRITE the current folder if you don t rename it After software is successfully installed you can make a shortcut to AsmIDE exe It s very important to make a shortcut so that its target location is C Ep2IDE not c Windows desktop or other locations First right click the Start button Then left click Explorer Left click on C Ep2IDE Right click on AsmlIDE exe an application program Left click Send to and finally left click Desktop do not click COPY It will create an icon named shortcut to AsmIDE on the desktop You can double check the target location by right clicking on the icon Then left click on properties You should see that the target location is
30. nd you will get an error message So you should wait until those two LED stop flickering After this reset process you can run your program by entering go start where the start is the label of the starting address in your source code or enter G F000 if you know the starting address is F000 but do not enter command too soon In the command line ALL NUMBERS ARE HEXADECIMAL and the sign is not needed Also you should notice that the label start has the back slash in the front All hex numbers may be substituted by symbols starting with the backslash For more information read the Command format section in the Wytec user manual 8 During a debugging session if you want to modify your source code you don t have to exit the debugger You can activate AsmIDE to edit your code and save your new code with the same file name Then click Build gt Assemble or click the assemble button on the toolbar to assemble the code A new S19 file should be generated Because you did not change the file name you don t have to click the Select this file button again The only thing you have to do is to click the WBUG11 button at the task bar at the bottom line of the debugger screen to activate debugger window Then enter the F10 key and the R option to download your files and start debugging again 11 0000 00FF 0000 01 FF 0800 0F FF 1800 1F FF 1000 103F 1003 1004 2200 23FF 2201 2203 2200 2202 240
31. oes not use PA3 leave the jumper in the left side If it does then move the jumper to the right side so the PA3 is not connected to XIRQ But don t forget to move it back to the left side when the BUFFALO monitor is used for debugging otherwise the single step function in BUFFALO monitor won t work Any attempt to write to the locations 2200 25FF 8000 83FF will have unpredictable results and must be avoided in user programs Before testing the board with the Wytec monitor move the jumper in the J15 to the top position labeled with WYTEC which stands for Wytec monitor To test the board follow the steps 1 through 7 below Step 1 Plug the AC adapter into a wall outlet and plug the DC plug at the other end into the DC jack on the lower right corner of the Husky11 board During power up the RESET LED should flash 4 times and all other LEDs must be off the speaker should chirp once If the chirp is too soft you can remove the sticker on the speaker to increase the volume and the LCD should display the following message HUSKY11 TRAINER WYTEC V4 02 If this does not occur turn over to the Questions amp Answers section of the Wytec user manual Step 2 Plug the USB cable to the USB jack P2 on the upper right corner of the Husky11 board Plug the other end of the USB cable into a USB port of your PC Make sure that the jumpers on the J31 and J32 are set correctly for USB interface f
32. or the ACIA 68B50 The header J33 is the 68HC11 SCI port in TTL interface that can be used by a user s application program Step 3 Press the reset button on the Husky11 board momentarily and the RESET LED which is located above the reset button should flash twice If it does not flash turn over to the Questions amp Answers section of the Wytec user manual Step 4 To invoke the AsmlIDE right click the Start button then left click Explorer and left click on C Ep2IDE and finally double left click on AsmIDE exe If you have created a shortcut icon on the desktop just double click the icon on the desktop Warning note Always plug the USB cable into Husky11 before invoking the AsmIDE and close the AsmIDE before unplugging the USB cable Otherwise the AsmIDE may hang up and you need to re establish the USB link again The Wytec debugger is a DOS program When the USB link is broken you will get an error message such as NTVDM has encountered a system error At that time you have to close the Wytec Debugger and AsmIDE then cycle the USB connection before re invoke the AsmIDE and Wytec Debugger In case the AsmIDE hangs up you need to close the AsmIDE first then pull the USB cable out the USB jack P2 wait for a few seconds before re plug the USB cable into the P2 After cycling USB connection the PC may re establish the USB communication If this does not work you need to reset your PC This problem will happen to any
33. time from PC OUTSTRGOO RMB 3 outputs a string terminated by 0 LCD_INI RMB 3 initializes the 16x2 LCD module LCD_LINE1 RMB 3 displays 16 char on the first line LCD_LINE2 RMB 3 displays 16 char on the second line SEL_INST RMB 3 selects instruction before writing the LCD module SEL_DATA RMB 3 selects data before writing the LCD module WRT_PULSE RMB 3 generates a write pulse to the LCD module The circuit is designed in such way that the value of all resistors and capacitors are not critical they can be off 50 or 100 How to use port F LCD port The port F is an 8 bit bi directional port Its primary usage is for an LCD display module If the port is not used as an LCD display it can be used as a general purpose I O port that can be accessed via J2 or J3 The pinouts of the J3 is as follows Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin9 Pin 10 Pin 11 Pin 12 Pin 13 Pin 14 Pin 15 Pin 16 GND VCC 5V Via a 100 Ohm resistor to GND PFO RS pin for LCD module PF1 EN pin for LCD module Not used PF4 DB4 pin for LCD module PF5 DB5 pin for LCD module PF6 DB6 pin for LCD module PF7 DB7 pin for LCD module Via an 18 Ohm resistor to VCC LED backlight for LCD module GND 15 How to use the keypad interface port G Port G is an 8 bit bi directional port Its primary usage is for a 4X4 keypad interface If the port is not used as a keypad interface it can be used as a general purpose
34. to relocate your code and re assemble it You can directly program the s19 file into a68HC711E9 Your code is final for stand alone operation after finishing your debugging session It works just like a real time In Circuit Emulator You can abort your program if it s hung in a loop When you press the ESC key at the PC keyboard it will interrupt the Husky11 board but you cannot abort your program with BUFFALO monitor unless you reset the board The problem with resetting the board is that you would not know where the 68HC11 was hung It also would leave SWI instructions on all breakpoint addresses resulting in having to download your s19 file all over again Here is a very simple program but it s complete It will flash the PB7 LED when it s running For a good programming practice you should always place the LDS instruction in the first line of your code PB7 EQU 80 bit 7 of port B FLS_RATE EQU 8B00 change this number will change LED flash rate ORG F000 START LDS FF the top of A1 internal RAM LDX 1000 X register points to the register block BACK BSET 4 X PB7 turn on the PB7 LED by setting PB7 1 JSR DELAY BCLR 4 X PB7 turn off the reset LED by resetting PB7 0 JSR DELAY JMP BACK DELAY LDY FLS_RATE DLY DEY BNE DLY RTS ORG FFFE FDB START reset vector END 10 2 Save your file frequently while editing If you are creating a new file and giving the file a name to save enter the file name including th
35. ur exclusive phantom monitor technology preserves all interrupt vectors including RESET The monitor also preserves all on chip RAM 00 1FF EEPROM and 31K external emulation RAM 8400 FFFF available for user applications there is no pre empted chip memory Because many students are taught with the Freescale BUFFALO we installed the BUFFALO monitor in U2 27C256 EPROM The board can be booted from the BUFFALO monitor so students can use the board immediately before leaning how to use the board with Wytec s monitor The hardware includes a prototype area 16 extra I O lines in port F and G one logic probe on board 16X2 LCD display with backlight 4x4 keypad SPI port speaker 4 digit LED display potentiometer 8 LED indicators for port B one 8 position DIP switch connected to port C 3 pushbutton switches dual UARTs RS485 interface IR transceiver with on board 38 KHz OSC and 60 pin EVB EVBU compatible male female connectors and 40 pin EVM compatible connector The package also includes a 9V 500mA 1A wall plug in switching power supply and a USB cable The specification of the AC adapter is DC input 110V DC output 9V Current rating 500mA 1A Type of plug 2 1mm female barrier plug center positive The AC adapter is only available to countries that use 110V WARNING If more power is needed in a robot or other applications the user should upgrade the AC adapter Otherwise the board could keep resetting itself whe
36. w the key 17 is down If PG4 low the key 3 is down The keypad scan routine then sets PG2 low PG0O PG1 PG3 high then test the PG4 PG7 If no key is down PG4 PG7 remain high If PG7 low the key 14 is down If PG6 low the key 10 is down If PG5 low the key 6 is down If PG4 low the key 2 is down The keypad scan routine then sets PG1 low PG0 PG2 PG3 high then test the PG4 PG7 If no key is down PG4 PG7 remain high If PG7 low the key 13 is down If PG6 low the key 9 is down If PG5 low the key 5 is down If PG4 low the key 1 is down The keypad scan routine then sets PGO low PG1 PG2 PG3 high then test the PG4 PG7 If no key is down PG4 PG7 remain high If PG7 low the key 12 is down If PG6 low the key 8 is down If PG5 low the key 4 is down If PG4 low the key 0 is down SPI port pinouts are as follows Pint VCC 5V Pin2 VCC 5V Pin3 PF2 LOAD Pin4 PD2 SPI DATA IN Pin5 PF3 STROBE Pin6 PD3 SPI DATA OUT from 68HC11 Pin 7 not used Pin8 PD4 CLOCK Pin9 GND Pin 10 GND 17 All on board jumpers J9 J10 J11 J13 J14 J15 J17 J26 J27 J28 J29 40 pin female connector for address and data ports Freescale 68HC11 EVM compatible LCD port for an LCD module 4 bit data interface SPI connector Mode selector MODEA and MODEB jumpers are not used in debugging sessions They can be used for programming the 68HC711E9 OTP part in bootstrap mode 4 X 4 ke
37. y after running a bad program during a debugging session The procedures to program the 512 byte internal EEPROM B600 B7FF are the same as the above steps except for step 2 You need to select the option B instead of the option E after the Load command is entered The J21 is used to write protect the external EEPROM U4 and it has nothing to do with the 512 bytes of internal EEPROM About AsmIDE AsmIDE is written by Eric Engler and it s simple and easy to use It offers all the basic features that you need to learn 68HC11 programming with this board There are quite a few free IDE available but only AsmIDE and MinilIDE www mgtek com miniide are two popular IDEs that include a 68HC11 assembler One valuable asset of the Husky11 board is the Wytec debugger WBUG11 If you plan to use BUFFALO monitor you can use either AsmIDE or the MinilDE if you are familiar with it If you prefer to use the Wytec debugger you need to launch it from the AsmIDE Using your own assembler or editor for WBUG11 If you would prefer to use your own assembler or editor such as the MinilDE instead of the AsmIDE you can use AsmIDE for launching the WBUG11 The full path name of the file that you work on must agree with the file name shown on the Wytec hc11 tools dialog window otherwise the WBUG11 will not be able to locate your s19 file to be downloaded Using the board as a 68HC711E9 programmer If you need to program a 68HC711E9 you can use this boar
38. you with the save changes message You can ignore that message and click the No answer 6 After the download is done type G D000 to run the program It will run the TEST program in real time The program will test switches scan keypad send a message to the LCD display adjust LED brightness generate music At first you can press the PCO PC1 or PC2 pushbutton switch and see that the PBO PB1 or PB2 LED follows the state of the pushbutton switch and then press the PAO switch to generate sound To stop the program you have to press the reset button momentarily All example programs are fully debugged so the assembler won t generate an error report If you have an error in your program you must correct it before an s19 file can be generated You can try to run a different example program later after you have finished reading this manual You should always press the reset button before downloading a new program because a new program may not work if an interrupt was enabled by a previous program Software development with the BUFFALO monitor We are using the AsmIDE as a terminal program with the following instructions to create your source code If you are using a different terminal program the instructions may vary The steps to create your source code are as follows 1 Click the File button to open an existing file or create a new file The memory locations from 00 2Cfor the A family or 00 2C and 100 1FF for the
39. ypad interface The 68HC11 s SCI receiver source selector numbering from top to bottom 1 SCI PDO receives signal from USB PORT if the two jumpers on the J32 are in bottom position 2 SCI PDO receives signal from J33 the TTL logical level of RS232 input from your target board 3 SCI PDO receives signal from T1 Terminal Block for RS485 input 4 SCI PDO receives signal from the on board IR receiver The RUN PRG jumper is used for selecting an operating mode When it s in the top position the board is used for debugging your code When it s in the bottom position the board is used ONLY for programming the 68HC711E9 chip Connects VR1 trimmer pot to PE7 of ADC Analog voltage reference It s connected to the on board 5V DC reference voltage via a cut off trace Clock output It s not installed If it s installed the clock output of the 68HC11 pin 8 is connected to the pin 8 of the P1 and it can be a clock source of a user target board Enables speaker When it s in the top position the speaker is driven by PA5 Output Comparator 3 When it s in the bottom position the speaker is driven by OUTB of the DAC LTC1661 Monitor selector Place a jumper in the top position for Wytec monitor the middle position for BUFFALO monitor and the bottom position for auto starting program in U3 IR transceiver control source selector When jumpers are placed in the up position labeled with
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