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VVDN_T4240MFCS_User_Manual
Rev. A0-02
30
CONFIDENTIAL
nm - memory modify (constant address)
pci - list and access PCI Configuration Space
ping - send ICMP ECHO_REQUEST to network host
printenv- print environment variables
rarpboot- boot image via network using RARP/TFTP protocol
reset - Perform RESET of the CPU
run - run commands in an environment variable
saveenv - save environment variables to persistent storage
sensor - LM75 Sensor
setenv - set environment variables
setexpr - set environment variable as the result of eval expression
sf - SPI flash sub-system
showvar - print local hushshell variables
sleep - delay execution for some time
source - run script from memory
test - minimal test like /bin/sh
tftpboot- boot image via netw
usbboot - boot from USB device
version - print monitor version
wdg - setting watchdog
=>
Most of the displayed commands were inherited from U-boot.
I2C Interface
7.4
1.
Chip Probe
i2c dev 0
Setting bus to 0
i2c probe
Valid chip addresses:
i2c dev 1
Setting bus to 1
i2c probe
Valid chip addresses: 1A 1B 1C 32 33 34 52 53 54 68 70
i2c dev 2
Setting bus to 2
i2c probe
Valid chip addresses: 1B 24 33 53 60 62
70 – I2c multiplex
68 – RTC
60 & 62 – PCI retimer
24 – GPIO Expander