Ch5-LED_LabExampleDetails

Ch5-LED_LabExampleDetails - Microcomputer Systems 1...

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Unformatted text preview: Microcomputer Systems 1 Interaction of ADSP-BF533 Ez-Kit Lite with the outside world LED LAB Example 2/11/12 Veton Kpuska 2 BF533 EZ-Kit Lite u The EZ-KIT Lite provides n four (4) push buttons and n six (6) LEDs for general-purpose IO. u 4 SW push-button switches n The four general-purpose push button switches are labeled SW4 through SW7. A status of each individual button can be read through programmable flag (PF) inputs: u PF8 through PF11. n A PF reads 1 when a corresponding switch is being pressed-on. When the switch is released, the PF reads 0. n A connection between the push button and PF input is established through the SW9 DIP switch. u 6 LEDs n The six LEDs, labeled LED4 through LED9, are accessed via some of the general-purpose IO pins of the flash memory interface. 2/11/12 Veton Kpuska 3 BF533 EZ-Kit Lite 2/11/12 Veton Kpuska 4 SW9 Switch For more information see ADSP-BF533 EZ-KIT Lite Evaluation System Manual: ADSP_BF533_EZ_KIT_Lite_Manual_Rev_3.0.pdf 2/11/12 Veton Kpuska 5 Push Button Enable Switch (SW9) u Positions: n 1 through 4 : disconnect the drivers associated with the push buttons from the PF pins of the processor. n 5 and 6 : are used to connect the transmit and receive frame syncs and clocks of SPORT0. This is important when the AD1836 video decoder and the processor are communicating in I2S mode. u Table 2-6 shows which PF is driven when the switch is in the default (ON) position. 2/11/12 Veton Kpuska 6 BF533 EZ-Kit Lite Circuit Schematics 2/11/12 Veton Kpuska 7 LED Lab Details u Source code directory contains an example ADSP-BF533 project that shows how n Programmable Flag pins (FIO), n Interrupts, and n Timer can be configured in C. n It also demonstrates the access to the LEDs on the EZ-KIT Lite, which are connected to the on-board Flash. u Files contained in this directory: n BF533 Flags C.dpj VisualDSP++ project file n main.c C file containing the main program and variable declaration n Initialisation.c C file containing all initialization routines n ISRs.c C file containing the interrupt service routines for Timer and FIO n BF533 Flags.h C header file containing prototypes and macros n readme.txtthis project description file 2/11/12 Veton Kpuska 8 Functional Description u This example demonstrates the initialization of the n External Bus Interface Unit - EBIU (asynchronous access), n Timer 0, n FIO pins, n Interrupts and the on-board Flash, which allows access to the six LEDs on the EZ-KIT....
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This note was uploaded on 02/10/2012 for the course ECE 3551 taught by Professor Staff during the Spring '11 term at FIT.

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Ch5-LED_LabExampleDetails - Microcomputer Systems 1...

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