What is the best way to write binary data over i2c? The i2c.write function only seems to take a string for its second argument. Its easy to create strings in the form “\x01\x02” but this only works for literal stings defined at compile time.
How to you create a binary string at run time?
using i2c.write(0x08, “\xA5”); works fine but
I tried just using string format to create strings as follows
Val = 0xA5;
str = format("\x%2X", Val);
str = format(“0x%2X”, Val);
but when you write them using I2C its just writes all the individual characters
‘\’, ‘x’, ‘A’, ‘5’ for the first case
or ‘0’, ‘x’, ‘A’, ‘5’ for the second
How can I build a string with binary data?