tftpput address size [[hostIPaddr:]filename]
The tftpput command is used to transfer a file to a TFTP server.
By default the destination port is 69 and the source port is pseudo-random. If CONFIG_TFTP_PORT=y, the environment variable tftpsrcp can be used to set the source port and the environment variable tftpdstp can be used to set the destination port.
memory address where the data starts
number of bytes to be transferred
IP address of the TFTP server, defaults to the value of environment variable serverip
path of the file to be written. If not provided, the client’s IP address is used to construct a default file name, e.g. C0.A8.00.28.img for IP address 192.168.0.40.
In the example the following steps are executed:
setup client network address
load a file from the SD-card
send the file via TFTP to a server
=> setenv autoload no => dhcp BOOTP broadcast 1 DHCP client bound to address 192.168.1.40 (7 ms) => load mmc 0:1 $loadaddr test.txt 260096 bytes read in 13 ms (19.1 MiB/s) => tftpput $loadaddr $filesize 192.168.1.3:upload/test.txt Using ethernet@1c30000 device TFTP to server 192.168.1.3; our IP address is 192.168.1.40 Filename 'upload/test.txt'. Save address: 0x42000000 Save size: 0x3f800 Saving: ################# 4.4 MiB/s done Bytes transferred = 260096 (3f800 hex) =>
The command is only available if CONFIG_CMD_TFTPPUT=y.
CONFIG_TFTP_BLOCKSIZE defines the size of the TFTP blocks sent. It defaults to 1468 matching an ethernet MTU of 1500.
If CONFIG_TFTP_PORT=y, the environment variables tftpsrcp and tftpdstp can be used to set the source and the destination ports.
CONFIG_TFTP_WINDOWSIZE can be used to set the TFTP window size of transmits after which an ACK response is required. The window size defaults to 1.
If CONFIG_TFTP_TSIZE=y, the progress bar is limited to 50 ‘#’ characters. Otherwise an ‘#’ is written per UDP package which may decrease performance.
The return value $? is 0 (true) on success and 1 (false) otherwise.