34 lines
749 B
Bash
34 lines
749 B
Bash
#!/bin/bash
|
|
|
|
# Read 8 byte ascii from $1 and send it to CAN bus
|
|
|
|
# <can_id>:
|
|
# 3 (SFF) or 8 (EFF) hex chars
|
|
# {data}:
|
|
# 0..8 (0..64 CAN FD) ASCII hex-values (optionally separated by '.')
|
|
# {len}:
|
|
# an optional 0..8 value as RTR frames can contain a valid dlc field
|
|
# <flags>:
|
|
# a single ASCII Hex value (0 .. F) which defines canfd_frame.flags
|
|
|
|
can_id=$1
|
|
input=$2
|
|
|
|
if [[ ${#input} -gt 8 ]]; then
|
|
echo "Error: Input string must be no longer than 8 characters."
|
|
exit 1
|
|
fi
|
|
|
|
hex_output=""
|
|
for (( i=0; i<${#input}; i++ )); do
|
|
hex_char=$(printf "%02x" "'${input:$i:1}")
|
|
hex_output+="${hex_char}"
|
|
done
|
|
|
|
hex_output=$(printf "%-16s" "$hex_output")
|
|
hex_output=${hex_output// /0}
|
|
|
|
can_id=$(printf "%03X" $can_id)
|
|
|
|
cansend can0 $can_id#$hex_output
|
|
|