From e2126e7bdbbc371c6ae45bded7aa073608ce967a Mon Sep 17 00:00:00 2001 From: patacongo Date: Mon, 9 Apr 2012 19:38:26 +0000 Subject: Updates for STM3210E-EVAL SRAM git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4579 42af7a65-404d-4744-a932-0658087f49c3 --- nuttx/configs/stm3210e-eval/README.txt | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'nuttx/configs/stm3210e-eval/README.txt') diff --git a/nuttx/configs/stm3210e-eval/README.txt b/nuttx/configs/stm3210e-eval/README.txt index 08d5b572b..c356a17d5 100755 --- a/nuttx/configs/stm3210e-eval/README.txt +++ b/nuttx/configs/stm3210e-eval/README.txt @@ -16,6 +16,7 @@ Contents - LEDs - Temperature Sensor - RTC + - FSMC SRAM - STM3210E-EVAL-specific Configuration Options - Configurations @@ -350,6 +351,21 @@ RTC overflow interrupt may be lost even if the STM32 is powered down only momentarily. Therefore hi-res solution is only useful in systems where the power is always on. +FSMC SRAM +========= + +The 8-Mbit SRAM is connected to the STM32 at PG10 which will be FSMC_NE3, Bank1 +SRAM3. This memory will appear at address 0x68000000. + +The on-board SRAM can be configured by setting + + CONFIG_STM32_FSMC=y : Enables the FSMC + CONFIG_STM32_FSMC_SRAM=y : Enable external SRAM support + CONFIG_HEAP2_BASE=0x68000000 : SRAM will be located at 0x680000000 + CONFIG_HEAP2_END=(0x68000000+(1*1024*1024)) : The size of the SRAM is 1Mbyte + CONFIG_MM_REGIONS=2 : There will be two memory regions + : in the heap + STM3210E-EVAL-specific Configuration Options ============================================ -- cgit v1.2.3