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board/linum-stm32h753bi: Add support to external sdram

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Signed-off-by: Jorge Guzman <jorge.gzm@gmail.com>
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Jorge Guzman
2024-07-20 11:33:14 -03:00
committed by Alan Carvalho de Assis
parent a1a0315b9c
commit cb64096da6
3 changed files with 181 additions and 1 deletions
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Documentation/platforms/arm/stm32h7/boards/linum-stm32h753bi/index.rst
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@@ -759,7 +759,7 @@ This configuration is focused on network testing using the ethernet periferal::
qencoder
--------
Configures and enables TIM5 on CH1(PA0) and CH2(PH11) to handle Quadrature Encoder:
Configures and enables TIM5 on CH1(PA0) and CH2(PH11) to handle Quadrature Encoder::
nsh> qe
qe_main: Hardware initialized. Opening the encoder device: /dev/qe0
@@ -769,3 +769,21 @@ Configures and enables TIM5 on CH1(PA0) and CH2(PH11) to handle Quadrature Encod
qe_main: 3. 3
qe_main: 4. 2
qe_main: 5. 1
sdram
--------
This configuration uses the FMC peripheral to connect to external SDRAM with 8 MB and add it to the nuttx heap.
To test the sdram use the command **ramtest**::
nsh> free
total used free maxused maxfree nused nfree
Umem: 9397168 5488 9391680 5880 8388592 28 5
nsh> ramtest -w -a 0xc0000000 -s 8388608
RAMTest: Marching ones: c0000000 8388608
RAMTest: Marching zeroes: c0000000 8388608
RAMTest: Pattern test: c0000000 8388608 55555555 aaaaaaaa
RAMTest: Pattern test: c0000000 8388608 66666666 99999999
RAMTest: Pattern test: c0000000 8388608 33333333 cccccccc
RAMTest: Address-in-address test: c0000000 8388608