Hello,

I'm trying to switch to your library instead of my own code. But I'm running into a bit of problems.

The first step of debugging was looking at the init function. Our two functions are quite different. Mine just looks like:

const INIT: [u8; 10] = hex!("00383914785e6d0c0106");

// ...

impl<I: Write> ST7032<I> {
    // ...

    pub fn init(&mut self) -> Result<(), I::Error> {
        self.device.write(ST7032_I2CADDR, &INIT)
    }

    // ...
}

After comparing each command that our codes sends out, I was able to make the following changes to your code to get it to work with my display:

diff --git a/src/lib.rs b/src/lib.rs
index 91fc70a..381112a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -83,7 +83,7 @@ where
             i2c,
             delay,
             lines,
-            entry: Direction::RightToLeft,
+            entry: Direction::LeftToRigh,
             scroll: false,
             display: false,
             cursor: false,
@@ -109,10 +109,10 @@ where
 
         self.off()?;
 
-        self.send_osc_config(true, 0)?;
-        self.send_contrast(0)?;
-        self.send_booster_config(true, false, 0)?;
-        self.send_follower_config(true, 0)?;
+        self.send_osc_config(false, 0b100)?;
+        self.send_contrast(0b1000)?;
+        self.send_booster_config(true, true, 2)?;
+        self.send_follower_config(true, 0b101)?;
 
         self.send_entry_mode()?;
         self.delay.delay_ms(20);

My code also skips the self.off()?; call, which seems unnecessary...

This leaves me with some questions:

1. Was it intentional to have the entry be RightToLeft? Since the display only displays ascii characters it seems like it should also write left to right 🤔
2. Why are you setting the contrast to 0? Won't this make it so that no text is visible, which is indeed what we observed when first trying out your code.
3. Why are you configuring the OSC to use 1/4 bias (instead of 1/5 bias)? When we do that there seems to be a black background on each character, making them almost impossible to read

I would love to submit a PR so that this can work on my end, but I of course still want it to work for you! Would appreciate any input you might have