From 8953e3a370efeb12110d7bf4f6b9b69bb031aa3b Mon Sep 17 00:00:00 2001 From: patacongo Date: Thu, 22 Dec 2011 22:24:00 +0000 Subject: [PATCH] Calibrated all PIC32 delay loops git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4217 7fd9a85b-ad96-42d3-883c-3090e2eb8679 --- apps/examples/adc/adc_main.c | 2 +- nuttx/ChangeLog | 1 + nuttx/configs/sure-pic32mx/nsh/defconfig | 9 ++++----- nuttx/configs/sure-pic32mx/ostest/defconfig | 11 +++++------ 4 files changed, 11 insertions(+), 12 deletions(-) diff --git a/apps/examples/adc/adc_main.c b/apps/examples/adc/adc_main.c index 39eaf7d26d..8373684a47 100644 --- a/apps/examples/adc/adc_main.c +++ b/apps/examples/adc/adc_main.c @@ -2,7 +2,7 @@ * examples/adc/adc_main.c * * Copyright (C) 2011 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt + * Author: Gregory Nutt * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions diff --git a/nuttx/ChangeLog b/nuttx/ChangeLog index 6c39fc1943..7154b5d199 100644 --- a/nuttx/ChangeLog +++ b/nuttx/ChangeLog @@ -2293,3 +2293,4 @@ accuracy of the timer-driven sampling. * configs/sure-pic32mx/nsh. The PIC32 port if (finally) functionaal. Add an NSH configuration for the Sure PIC32MX board. + * configs/sure-pic32mx/*/defconfig. Calibrated all PIC32 delay loops. diff --git a/nuttx/configs/sure-pic32mx/nsh/defconfig b/nuttx/configs/sure-pic32mx/nsh/defconfig index 6eb1a75186..74b56dda84 100644 --- a/nuttx/configs/sure-pic32mx/nsh/defconfig +++ b/nuttx/configs/sure-pic32mx/nsh/defconfig @@ -49,7 +49,9 @@ # CONFIG_ARCH_BOARD_name - for use in C code # CONFIG_ENDIAN_BIG - define if big endian (default is little endian) # NOTE: The PIC32MX is always little endian. -# CONFIG_BOARD_LOOPSPERMSEC - for delay loops +# CONFIG_BOARD_LOOPSPERMSEC. You simply use a stop watch to measure +# the 100 second delay then adjust CONFIG_BOARD_LOOPSPERMSEC until +# the delay actually is 100 seconds. # CONFIG_DRAM_SIZE - Describes the installed DRAM. # CONFIG_DRAM_START - The start address of DRAM (physical) # CONFIG_DRAM_END - Last address+1 of installed RAM @@ -65,9 +67,6 @@ # CONFIG_ARCH_CALIBRATION - Enables some build in instrumentation that # cause a 100 second delay during boot-up. This 100 second delay # serves no purpose other than it allows you to calibrate -# CONFIG_BOARD_LOOPSPERMSEC. You simply use a stop watch to measure -# the 100 second delay then adjust CONFIG_BOARD_LOOPSPERMSEC until -# the delay actually is 100 seconds. # CONFIG_ARCH_DMA - Support DMA initialization # CONFIG_ARCH=mips @@ -77,7 +76,7 @@ CONFIG_ARCH_CHIP=pic32mx CONFIG_ARCH_CHIP_PIC32MX440F512H=y CONFIG_ARCH_BOARD=sure-pic32mx CONFIG_ARCH_BOARD_SUREPIC32MX=y -CONFIG_BOARD_LOOPSPERMSEC=8079 +CONFIG_BOARD_LOOPSPERMSEC=4275 CONFIG_DRAM_SIZE=(32*1024) CONFIG_DRAM_START=0xa0000000 CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE) diff --git a/nuttx/configs/sure-pic32mx/ostest/defconfig b/nuttx/configs/sure-pic32mx/ostest/defconfig index 00786792c5..838e553ef4 100644 --- a/nuttx/configs/sure-pic32mx/ostest/defconfig +++ b/nuttx/configs/sure-pic32mx/ostest/defconfig @@ -2,7 +2,7 @@ # configs/sure-pic32mx/ostest/defconfig # # Copyright (C) 2011 Gregory Nutt. All rights reserved. -# Author: Gregory Nutt +# Author: Gregory Nutt # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions @@ -49,7 +49,9 @@ # CONFIG_ARCH_BOARD_name - for use in C code # CONFIG_ENDIAN_BIG - define if big endian (default is little endian) # NOTE: The PIC32MX is always little endian. -# CONFIG_BOARD_LOOPSPERMSEC - for delay loops +# CONFIG_BOARD_LOOPSPERMSEC. You simply use a stop watch to measure +# the 100 second delay then adjust CONFIG_BOARD_LOOPSPERMSEC until +# the delay actually is 100 seconds. # CONFIG_DRAM_SIZE - Describes the installed DRAM. # CONFIG_DRAM_START - The start address of DRAM (physical) # CONFIG_DRAM_END - Last address+1 of installed RAM @@ -65,9 +67,6 @@ # CONFIG_ARCH_CALIBRATION - Enables some build in instrumentation that # cause a 100 second delay during boot-up. This 100 second delay # serves no purpose other than it allows you to calibrate -# CONFIG_BOARD_LOOPSPERMSEC. You simply use a stop watch to measure -# the 100 second delay then adjust CONFIG_BOARD_LOOPSPERMSEC until -# the delay actually is 100 seconds. # CONFIG_ARCH_DMA - Support DMA initialization # CONFIG_ARCH=mips @@ -77,7 +76,7 @@ CONFIG_ARCH_CHIP=pic32mx CONFIG_ARCH_CHIP_PIC32MX440F512H=y CONFIG_ARCH_BOARD=sure-pic32mx CONFIG_ARCH_BOARD_SUREPIC32MX=y -CONFIG_BOARD_LOOPSPERMSEC=8079 +CONFIG_BOARD_LOOPSPERMSEC=4275 CONFIG_DRAM_SIZE=(32*1024) CONFIG_DRAM_START=0xa0000000 CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)