Microprocessor or Microcontroller Not just a case of you say tomarto and I say tomayto

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1 Microprocessor or Microcontroller Not just a case of you say tomarto and I say tomayto Discussion of the capabilities of the Analog Devices ADSP-5333 Evaluation Board used in this course M. Smith, ECE University of Calgary, Canada Information taken from Analog Devices On-line Manuals with permission Information furnished by Analog Devices is believed to be accurate and reliable. However, Analog Devices assumes no responsibility for its use or for any infringement of any patent other rights of any third party which may result from its use. No license is granted by implication or otherwise under any patent or patent right of Analog Devices. Copyright Analog Devices, Inc. All rights reserved. M. Smith, University of Calgary, Canada 2/ 29 Audio-Video Interaction of ADSP-BF533 Ez-Kit Lite with the outside world To be tackled today Basic microprocessor Concept of a microcontroller Difference between the Blackfin microcontroller and Blackfin Ez-Kit Lite evaluation board Capabilities of the ADSP-BF533 Blackfin Ez- Kit Lite evaluation board Various acronyms that will be used in the course M. Smith, University of Calgary, Canada 3/ 29 M. Smith, University of Calgary, Canada 4/ 29

2 Microprocessor Basic concept CPU contains CCU ALU data registers and pointer registers (ENCM369 architecture concepts) ADDRESS BUS 32-bit / 64-bit wide CONTROL BUS Timing signals, ready signals, interrupts etc DATA BUS bidirectional 8-bit / 16-bit / 32-bit / 128-bit Microprocessor, by-itself, COMPLETELY USELESS Must have external peripherals to interact with outside world MicroPROCESSOR Basic concept CPU contains CCU ALU data registers and pointer registers ENCM 369 REVIEW CONTROL BUS (Sends Read / Write* signals and clock ADDRESS BUS BOOT ROM Used at startup Instruction (program) ROM Data RAM Transducers Keyboard Screen UART Parallel interface etc DATA BUS (BI-DIRECTIONAL direction controlled by R/W* control Microprocessor, by-itself, completely useless must have external peripherals to Interact with outside world M. Smith, University of Calgary, Canada 5/ 29 M. Smith, University of Calgary, Canada 6/ 29 External devices needs this amount of control lines ( glue ) to work External Device ADDRESS BUS Address strobe Data strobe Read/Write control DATA BUS DECODE LOGIC CS chip select Device itself with all necessary internal logic to do the things it needs to do OE Output Enable other signals such as interrupt signals, etc M. Smith, University of Calgary, Canada 7/ 29 Issues with adding external devices Many pins Mechanical failure rates increased Design time increased routing issues Cost increased, board size increased Continually redesigning same thing Compatibility between parts Upgrade part Many similar options between different projects In Real-life -- Don t need 100% flexibility Analog Devices Blackfin BF533 microcontrollers ARM Microcontrollers:- Analog Devices Cortex 7, Discovery Board Cortex 4, EiE Razor Board Cortex 3 M. Smith, University of Calgary, Canada 8/ 29

3 MicroCONTROLLER Basic concept CPU contains CCU ALU data registers and pointer registers ENCM 369 REVIEW CONTROL ADDRESS DATA BOOT ROM Used at startup Instruction (program) ROM Data RAM Transducers UART Parallel interface Etc Microcontroller put a limited amount of most commonly used resources inside the chip a limited amount of resources is often enough for many applications M. Smith, University of Calgary, Canada 9/ 29 Advantages of microcontroller over microprocessor Pin count down Reliability up Design time down, Board layout size down Upgrade path easier matching between peripherals for speed Cost down bulk purchases Common software / hardware design environment available from manufacturer M. Smith, University of Calgary, Canada 10/ 29 Issues when using any microcontroller Two types of memory Difference in speed (read and write times) when using ON-CHIP fast, easy to access, almost as fast as using a register, limited amount of on-chip memory available OFF-CHIP slower to access additional cost You can use on-chip memory in a CACHE mode (copy off-chip data to on-chip when processing data, then copy back). You use DMA Direct Memory Access External components still there E.g. Video CODECs need to use DMA Direct Memory Access so that the controller can get on with the processing and let something else worry about moving data in and out of the chip Real time environment Event driven can t WAIT for a device to become ready, can t POLL to see if device is ready, interrupt handling is key All these resources are power hungry and compete for resources (data busses etc) special features to control power use means often automatically turned off and must be turned in M. Smith, University of Calgary, Canada 11/ 29 Components of the Blackfin Board From smallest to largest Processor Core One core on Blackfin ADSP-BF533 processor Two cores on Blackfin ADSP-BF561 processor ENCM515 ADSP-SC589 ARM + 2 SHARC CORES Processor itself core + some memory + some other built incapability Blackfin Evaluation board Don t forget the software development package VisualDSP++ and new CCES NTDS This year remember that the next slide is animated M. Smith, University of Calgary, Canada 12/ 29

Blackfin ADSP-BF533 CORE NTDS THIS IS ANIMATED M.

at the same time? Why would the processor designers place 8-bit ALUs operations available on a processor that has 32-bit registers?

16-bit ALU operations occur at the same time M.

Smith, University of Calgary, Canada 15/ 29 Enter the key elements from previous slide Will you learn to flash memory in this class, and

4 Blackfin ADSP-BF533 CORE NTDS THIS IS ANIMATED M. Smith, University of Calgary, Canada 13/ 29 Some key discussed elements from the previous slide that might appear in quizzes Processor has 2 buses that can carry data. Why did the processor designers allow 2 loads to occur from memory at the same time, a load and store at the same time, but NOT two stores at the same time? Why would the processor designers place 8-bit ALUs operations available on a processor that has 32-bit registers? Give an example of an instruction where four 8-bit ALU operations occur at the same time Give an example of an instruction where two 16-bit ALU operations occur at the same time M. Smith, University of Calgary, Canada 14/ 29 CORE Differences between a microprocessor The and a Blackfin microcontroller chip itself M. Smith, University of Calgary, Canada 15/ 29 Enter the key elements from previous slide Will you learn to flash memory in this class, and how would you do it and why? What does a watch-dog timer do and how do you find out how to feed it? JEADI articles discuss that MPG EiE Razor Board startup code always has WATCHDOG activated and you need to THROW_BONE to stop problems What does the acronym MMU stand for? What does the acronym SPI stand for, and in what labs will we be using the SPI? When is the PPI used? What s a real time clock? M. Smith, University of Calgary, Canada 16/ 29

BLACKFIN EVALUATION BOARD AND PERIPHERALS USED IN LABS -- W.I.B.On.Q?-P.Y!

1 You will demonstrate the basic microcontroller capability Use the microcontroller Learn to configure the FLASH memory Contains memory and also

(Programmable Flags) Used to control many of the external devices (chip select and timing lines) Used as input and output to control radio

Smith, University of Calgary, Canada 18/ 29 Push-button switches (PF lines) LED (controlled by FLASH memory logic) Need to learn how to

5 BLACKFIN EVALUATION BOARD AND PERIPHERALS USED IN LABS -- W.I.B.On.Q?-P.Y! CAN TALK DIRECTLY TO A301 / 305 LAB STATION HARDRIVE USING JTAG -- COFFEEPOT SIMULATOR Lab. 1 You will demonstrate the basic microcontroller capability Use the microcontroller Learn to configure the FLASH memory Contains memory and also I/O components (input / output) Use the FLASH memory I/O capability to control the LEDs to signal commands happening Configure the PF I/O lines (Programmable Flags) Used to control many of the external devices (chip select and timing lines) Used as input and output to control radio controlled car (Lab. 2) and / or interrupt lines or biofeedback (Lab. 3) M. Smith, University of Calgary, Canada 17/ 29 M. Smith, University of Calgary, Canada 18/ 29 Push-button switches (PF lines) LED (controlled by FLASH memory logic) Need to learn how to configure the flash memory so that We can control the LEDs If we can control the LED s then we have signals that could be used for a radio-controlled car Parallel interfaces present on the FLASH memory chips M. Smith, University of Calgary, Canada 19/ 29 M. Smith, University of Calgary, Canada 20/ 29

designed a Software controlled thermometer TMP03 will be used in Laboratory 3 M. Smith, University of Calgary, Canada 21/ 29 M.

6 Configure the PF lines (Programmable Flags Input and output pins) NTDS Animated Registers to control PF lines. W.A.D.L. FIO_FLAG_D Data register FIO_EDGE -- Edge register FIO_DIR -- Direction register FIO_POLAR -- Polarity register Replace one button input with the input of a temperature transducer and you have designed a Software controlled thermometer TMP03 will be used in Laboratory 3 M. Smith, University of Calgary, Canada 21/ 29 M. Smith, University of Calgary, Canada 22/ 29 KEY THING TO REMEMBER --PF lines being used already to control other devices We are not alone when using the board!! When we change the PF registers bits, we must ONLY change those over which we have control PF8, PF9, PF10, PF11 (Similar on ARM) Must learn the instructions to safely change some register bits and not others (AND and OR instructions) (15 hrs -> 5 hrs) FIO_FLAG_D register has 16 I/O pins (Flag pins) available M. Smith, University of Calgary, Canada 23/ 29 Enter the key elements from previous slide Which A/D is used on the Blackfin board? Why are the signals that control the LED s coming from the FLASH? What does SPORT1 means, and what external device is being controlled by it? How does the SPORT device allow time sharing of the bus by several different external devices? M. Smith, University of Calgary, Canada 24/ 29

7 Audio-Video Interaction of ADSP-BF533 Ez-Kit Lite with the outside world BLACKFIN AUDIO CHIP M. Smith, University of Calgary, Canada 25/ 29 M. Smith, University of Calgary, Canada 26/ 29 Review quiz Review Quiz CPU stands for CCU stands for ALU stands for DMA stands for How come the FLASH memory must be used to control the LEDs and not the GPIO register pins (general purpose I/O)? Why can t we use PF0 line in Lab. 2 to read temperature transducer input signals? Why will AND and OR operations be necessary when we control the PF I/O lines? What does PF stand for? M. Smith, University of Calgary, Canada 27/ 29 M. Smith, University of Calgary, Canada 28/ 29

8 Tackled today Basic microprocessor Concept of a microcontroller Difference between the Blackfin microcontroller and Blackfin Ez-Kit Lite evaluation board Capabilities of the ADSP-BF533 Blackfin Ez- Kit Lite evaluation board Various acronyms that will be used in the course M. Smith, University of Calgary, Canada 29/ 29

Microprocessor or Microcontroller Not just a case of you say tomarto and I say tomayto

Microprocessor or Microcontroller Not just a case of you say tomarto and I say tomayto Discussion of the capabilities of the Analog Devices ADSP-5333 Evaluation Board used in this course M. Smith, ECE