Description of the procedures: one, a development environment, development board: AT91SAM7X256-EK 2, emulator: SAM-ICE (ATMEL) 3, development of software: IAR4_30A-1_2 (IAR) Second, the program features 1, Procedure Objective: AT91SAM7X256 PIT' s Basic usage: add: PIT operating system aims to provide periodic interrupts. 2, Function: PIT generate periodic interrupts. Third, set up a development board, according to AT91SAM7X256-EK using the wizard, set a good development board (minimum system) . 2, run the program shows LED4 flicker, the frequency and timely PIT interrupt frequency.

AT91SAM7X256-PIT-IAR\SAM7X-PIT.dep
....................\SAM7X-PIT.ewd
....................\SAM7X-PIT.ewp
....................\SAM7X-PIT.eww
....................\BINARY\Exe\SAM7X-PIT.bin
....................\......\...\SAM7X-PIT.sim
....................\......\List\Cstartup.lst
....................\......\....\SAM7X-PIT.map
....................\......\Obj\Cstartup.r79
....................\......\...\Cstartup_SAM7.r79
....................\......\...\dbgu.r79
....................\......\...\main.r79
....................\......\...\pit.r79
....................\......\...\SAM7X-PIT.pbd
....................\FLASH_DEBUG\Exe\SAM7X-PIT.d79
....................\...........\...\SAM7X-PIT.sim
....................\...........\List\Cstartup.lst
....................\...........\....\SAM7X-PIT.map
....................\...........\Obj\Cstartup.r79
....................\...........\...\Cstartup_SAM7.r79
....................\...........\...\dbgu.r79
....................\...........\...\main.r79
....................\...........\...\pit.r79
....................\...........\...\SAM7X-PIT.pbd
....................\include\AT91SAM7X256.h
....................\.......\AT91SAM7X256.html
....................\.......\AT91SAM7X256.inc
....................\.......\AT91SAM7X256.rdf
....................\.......\AT91SAM7X256.tcl
....................\.......\AT91SAM7X256_inc.h
....................\.......\ioat91sam7x256.ddf
....................\.......\ioat91sam7x256.h
....................\.......\lib_AT91SAM7X256.h
....................\.......\arch-at91sam7x256\at91sam7x256_adc.h
....................\.......\.................\at91sam7x256_aic.h
....................\.......\.................\at91sam7x256_can.h
....................\.......\.................\at91sam7x256_can_mb.h
....................\.......\.................\at91sam7x256_ckgr.h
....................\.......\.................\at91sam7x256_dbgu.h
....................\.......\.................\at91sam7x256_emac.h
....................\.......\.................\at91sam7x256_mc.h
....................\.......\.................\at91sam7x256_pdc.h
....................\.......\.................\at91sam7x256_pio.h
....................\.......\.................\at91sam7x256_pitc.h
....................\.......\.................\at91sam7x256_pmc.h
....................\.......\.................\at91sam7x256_pwmc.h
....................\.......\.................\at91sam7x256_pwmc_ch.h
....................\.......\.................\at91sam7x256_rstc.h
....................\.......\.................\at91sam7x256_rttc.h
....................\.......\.................\at91sam7x256_spi.h
....................\.......\.................\at91sam7x256_ssc.h
....................\.......\.................\at91sam7x256_sys.h
....................\.......\.................\at91sam7x256_tc.h
....................\.......\.................\at91sam7x256_tcb.h
....................\.......\.................\at91sam7x256_twi.h
....................\.......\.................\at91sam7x256_udp.h
....................\.......\.................\at91sam7x256_usart.h
....................\.......\.................\at91sam7x256_vreg.h
....................\.......\.................\at91sam7x256_wdtc.h
....................\.......\.................\CVS\Entries
....................\.......\.................\...\Repository
....................\.......\.................\...\Root
....................\.......\HTML\AT91SAM7X256_ADC.html
....................\.......\....\AT91SAM7X256_AES.html
....................\.......\....\AT91SAM7X256_AIC.html
....................\.......\....\AT91SAM7X256_CAN.html
....................\.......\....\AT91SAM7X256_CAN_MB.html
....................\.......\....\AT91SAM7X256_CKGR.html
....................\.......\....\AT91SAM7X256_DBGU.html
....................\.......\....\AT91SAM7X256_EMAC.html
....................\.......\....\AT91SAM7X256_h.html
....................\.......\....\AT91SAM7X256_idx.html
....................\.......\....\AT91SAM7X256_list.html
....................\.......\....\AT91SAM7X256_MC.html
......

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