The terminal program I use to interact with the BeagleBone over the serial connection, picocom, can use an external program, lrzsz, to support transfers using the ZMODEM protocol. It just so happens that Minix provides a ZMODEM implementation too. This combination is easy to setup and can transfer files to the bone for us. This guide explains how to setup and use it.
The first step is to install lrzsz on your development machine.
emerge lrzszThen, create a test file so we have something to try transfering.
echo "Hallo, Wereld" > test.txt
Next, start picocom with these options.
picocom -b 115200 /dev/ttyUSB0 --send-cmd "sz -vv -y"Then, boot Minix. Need a hint? Try my other guides: Minix on the BeagleBone Black (Part 1, Part 2, Part 3), Netbooting Minix on the BeagleBone Black, Minix on the BeagleBoard-xM. Once you've gotten Minix up and running, you can log in as root and proceed to the next step.
Do Ctrl-a+s a to initiate a transfer (i.e. hold down the control key, press and release 'a', press and release 's', and finally release the control key). You will be prompted to enter the name of the file you want to transfer. Below I entered the name of the example file (test.txt) and pressed the enter key. The transfer should go and end with "*** exit status: 0" Here's what the output looks like:
*** file: test.txt
sz -vv -y test.txt
Bytes Sent: 14 BPS:14
*** exit status: 0
# cat test.txt