diff --git a/Cargo.lock b/Cargo.lock
index 03d6720..2874ff3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -14,12 +14,6 @@ version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c08606f8c3cbf4ce6ec8e28fb0014a2c086708fe954eaa885384a6165172e7e8"
 
-[[package]]
-name = "az"
-version = "1.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b7e4c2464d97fe331d41de9d5db0def0a96f4d823b8b32a2efd503578988973"
-
 [[package]]
 name = "base64"
 version = "0.13.1"
@@ -291,29 +285,6 @@ dependencies = [
  "nb 1.1.0",
 ]
 
-[[package]]
-name = "embedded-graphics"
-version = "0.8.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4e8da660bb0c829b34a56a965490597f82a55e767b91f9543be80ce8ccb416fe"
-dependencies = [
- "az",
- "byteorder",
- "embedded-graphics-core",
- "float-cmp",
- "micromath",
-]
-
-[[package]]
-name = "embedded-graphics-core"
-version = "0.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95743bef3ff70fcba3930246c4e6872882bbea0dcc6da2ca860112e0cd4bd09f"
-dependencies = [
- "az",
- "byteorder",
-]
-
 [[package]]
 name = "embedded-hal"
 version = "0.2.7"
@@ -339,16 +310,6 @@ dependencies = [
  "embedded-hal 1.0.0",
 ]
 
-[[package]]
-name = "embedded-hal-bus"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "513e0b3a8fb7d3013a8ae17a834283f170deaf7d0eeab0a7c1a36ad4dd356d22"
-dependencies = [
- "critical-section",
- "embedded-hal 1.0.0",
-]
-
 [[package]]
 name = "embedded-io"
 version = "0.6.1"
@@ -627,16 +588,13 @@ name = "esp32-phone"
 version = "0.1.0"
 dependencies = [
  "critical-section",
- "embedded-graphics",
  "embedded-hal 1.0.0",
- "embedded-hal-bus",
  "esp-alloc",
  "esp-backtrace",
  "esp-bootloader-esp-idf",
  "esp-hal",
  "esp-println",
  "log",
- "mipidsi",
 ]
 
 [[package]]
@@ -693,15 +651,6 @@ dependencies = [
  "vcell",
 ]
 
-[[package]]
-name = "float-cmp"
-version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "98de4bbd547a563b716d8dfa9aad1cb19bfab00f4fa09a6a4ed21dbcf44ce9c4"
-dependencies = [
- "num-traits",
-]
-
 [[package]]
 name = "fnv"
 version = "1.0.7"
@@ -901,23 +850,6 @@ version = "2.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8ca58f447f06ed17d5fc4043ce1b10dd205e060fb3ce5b979b8ed8e59ff3f79"
 
-[[package]]
-name = "micromath"
-version = "2.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3c8dda44ff03a2f238717214da50f65d5a53b45cd213a7370424ffdb6fae815"
-
-[[package]]
-name = "mipidsi"
-version = "0.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "790ebd28bd67addbccf41b1c0c188c26bb9f5bdcd91d4d6da9bd558e20d97a1d"
-dependencies = [
- "embedded-graphics-core",
- "embedded-hal 1.0.0",
- "heapless 0.8.0",
-]
-
 [[package]]
 name = "nb"
 version = "0.1.3"
diff --git a/Cargo.toml b/Cargo.toml
index 20ef82c..727de0a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,10 +20,6 @@ esp-backtrace = { version = "0.19.0", features = [
 ] }
 esp-println = { version = "0.17.0", features = ["esp32", "log-04"] }
 
-mipidsi = "0.10.0"
-embedded-hal-bus = "*"
-embedded-graphics="*"
-
 
 # For fine tuning these settings, please refer to https://doc.rust-lang.org/cargo/reference/profiles.html
 [profile.dev]
diff --git a/src/display.rs b/src/display.rs
index 36763c1..8894395 100644
--- a/src/display.rs
+++ b/src/display.rs
@@ -1,11 +1,7 @@
 use core::ops::Mul;
 
 use embedded_hal::{delay::DelayNs, spi::SpiBus};
-use esp_hal::{
-    DriverMode,
-    gpio::{Input, Output},
-    spi::master::Spi,
-};
+use esp_hal::{DriverMode, gpio::Output, spi::master::Spi};
 
 // use atmega_hal::{
 //     Spi,
@@ -26,6 +22,14 @@ impl Rgb565 {
         Color::from(r | b | g)
     }
 
+    pub fn black() -> Rgb565 {
+        Rgb565(0, 0, 0)
+    }
+
+    pub fn white() -> Rgb565 {
+        Rgb565(255, 255, 255)
+    }
+
     pub fn red() -> Rgb565 {
         Rgb565(255, 0, 0)
     }
diff --git a/src/main.rs b/src/main.rs
index 5cb77d6..46848b4 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -15,7 +15,7 @@ use esp_hal::{
     gpio::{Level, Output, OutputConfig},
     main,
     spi::master::{Config, Spi},
-    time::{Duration, Instant, Rate},
+    time::Rate,
 };
 
 use esp_backtrace as _;
@@ -97,17 +97,7 @@ fn main() -> ! {
         Rgb565::yellow().as_color(),
     );
 
-    // let mut led = Output::new(peripherals.GPIO5, Level::Low, OutputConfig::default());
-
-    let mut test_delay = Delay::new();
-
-    // let mut buffer = [0u8; 512];
-    // let spi_device = ExclusiveDevice::new_no_delay(spi, cs).unwrap();
-    // let di = SpiInterface::new(spi_device, dc, &mut buffer);
-    // let mut display = Builder::new(ST7789, di)
-    //     .reset_pin(rst)
-    //     .init(&mut test_delay)
-    //     .unwrap(); // delay provider from your MCU
+    let test_delay = Delay::new();
 
     let mut color = 0;
 
@@ -116,8 +106,6 @@ fn main() -> ! {
 
         color = (color + 50) % 200;
 
-        // display.clear(Rgb565::new(color, color, color)).unwrap();
-
         display.draw_rect(
             Position::new(0, 0),
             Position::new(240, 240),