1 files changed, 19 insertions, 9 deletions

diff --git a/examples/mspm0l1306/src/bin/i2c.rs b/examples/mspm0l1306/src/bin/i2c.rs
index 51327dff5..e8801c485 100644
--- a/examples/mspm0l1306/src/bin/i2c.rs
+++ b/examples/mspm0l1306/src/bin/i2c.rs
@@ -1,7 +1,7 @@
 //! This example uses FIFO with polling, and the maximum FIFO size is 8.
 //! Refer to async example to handle larger packets.
 //!
-//! This uses the virtual COM port provided on the LP-MSPM0L1306 board.
+//! This example controls AD5171 digital potentiometer via I2C with the LP-MSPM0L1306 board.
 
 #![no_std]
 #![no_main]
@@ -9,9 +9,10 @@
 use defmt::*;
 use embassy_executor::Spawner;
 use embassy_mspm0::i2c::{Config, I2c};
+use embassy_time::Timer;
 use {defmt_rtt as _, panic_halt as _};
 
-const ADDRESS: u8 = 0x6a;
+const ADDRESS: u8 = 0x2c;
 
 #[embassy_executor::main]
 async fn main(_spawner: Spawner) -> ! {
@@ -23,13 +24,22 @@ async fn main(_spawner: Spawner) -> ! {
 
     let mut i2c = unwrap!(I2c::new_blocking(instance, scl, sda, Config::default()));
 
-    let mut to_read = [0u8; 1];
-    let to_write: u8 = 0x0F;
+    let mut pot_value: u8 = 0;
 
-    match i2c.blocking_write_read(ADDRESS, &[to_write], &mut to_read) {
-        Ok(()) => info!("Register {}: {}", to_write, to_read[0]),
-        Err(e) => error!("I2c Error: {:?}", e),
-    }
+    loop {
+        let to_write = [0u8, pot_value];
+
+        match i2c.blocking_write(ADDRESS, &to_write) {
+            Ok(()) => info!("New potentioemter value: {}", pot_value),
+            Err(e) => error!("I2c Error: {:?}", e),
+        }
 
-    loop {}
+        pot_value += 1;
+        // if reached 64th position (max)
+        // start over from lowest value
+        if pot_value == 64 {
+            pot_value = 0;
+        }
+        Timer::after_millis(500).await;
+    }
 }