Artesyn COMX-P40x0 ENP2, Руководство пользователя

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BSP
COMX-P40x0 ENP2 Installation and Use (6806800R95B)
105
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wdt reset
System reset.
7.15.4 DTT
An I2C thermal sensor ADT7411 (U36) is installed and is located on I2C<1>. The ADT7411 is
used to monitor the CPU temperature. Boot up message in the U-Boot will read as "DTT:
ADT7411@4C".
U-Boot provides "dtt" to display the CPU temperature. Here is an example of dtt usage:

dtt
DTT1: CPU Temperature: 48 C
7.16 SPI
The COMX-P40x0 ENP2 provides a SPI bus from the P40x0 CPU with 3 chip-select signals. All SPI
bus signals are routed to COM Express connectors.
For more information on the distribution of the SPI bus, see SPI Interface on page 70 .
U-Boot provides "sf" utilities to operate SPI Flash.
Below are usage samples for "sf".

sf probe 0
4096 KiB S25FL032A(P) at 0:0 is now current device

sf erase 0 80000
sf probe [bus:]cs [hz] [mode] - Initializes flash device on given SPI bus and chip select.
sf read addr offset len - Reads ’len’ bytes starting at ’offset’ to memory at ’addr’
sf write addr offset len - Writes ’len’ bytes from memory at ’addr’ to flash at
’offset’
sf erase offset len - Erases ’len’ bytes from ’offset’