diff --git a/README.md b/README.md
index af77172..14aeb5e 100644
--- a/README.md
+++ b/README.md
@@ -1,65 +1,81 @@
 # LIS3DH
 
-3-axis accelerometer
+A C89 driver for the 3-axis accelerometer LIS3DH by ST. Supports both i2c and SPI. 
+
+> ### Features
+> - FIFO of varying watermark level, up to 32
+> - HP filter
+> - 2G, 4G, 8G and 16G
+> - All power modes
+> - Interrupt generation (soon)
+> - Free-fall detection (soon)
+> - Single and double click detection (soon)
+> - 4D/6D orientation detection (soon)
+
+FIFO output example
 
 ```
 $ ./lis3dh 
-x:  0.5520 g, y: -0.8800 g, z:  0.0760 g, mag: 1.0416
-x:  0.5560 g, y: -0.9000 g, z: -0.0040 g, mag: 1.0579
-x:  0.5840 g, y: -0.8680 g, z:  0.0360 g, mag: 1.0468
-x:  0.5440 g, y: -0.8680 g, z:  0.0920 g, mag: 1.0285
-x:  0.5240 g, y: -0.9000 g, z: -0.0600 g, mag: 1.0432
-x:  0.6040 g, y: -0.8960 g, z:  0.1000 g, mag: 1.0852
-x:  0.5440 g, y: -0.8680 g, z:  0.0000 g, mag: 1.0244
-x:  0.5720 g, y: -0.9040 g, z: -0.0160 g, mag: 1.0699
-x:  0.5480 g, y: -0.8680 g, z:  0.0200 g, mag: 1.0267
-x:  0.5360 g, y: -0.9120 g, z:  0.0240 g, mag: 1.0581
-x:  0.5600 g, y: -0.9040 g, z:  0.0000 g, mag: 1.0634
-x:  0.5960 g, y: -0.8760 g, z:  0.0640 g, mag: 1.0615
-x:  0.5360 g, y: -0.8960 g, z: -0.0040 g, mag: 1.0441
-x:  0.5320 g, y: -0.8800 g, z: -0.0080 g, mag: 1.0283
-x:  0.5520 g, y: -0.9000 g, z: -0.0440 g, mag: 1.0567
-x:  0.5760 g, y: -0.8800 g, z:  0.0320 g, mag: 1.0522
-x:  0.5560 g, y: -0.8840 g, z: -0.0240 g, mag: 1.0446
-x:  0.5120 g, y: -0.9040 g, z: -0.0360 g, mag: 1.0395
-x:  0.6000 g, y: -0.8720 g, z:  0.0320 g, mag: 1.0590
+x: 0.5320, y: -0.8800, z: -0.0600 mag: 1.0301
+x: 0.5440, y: -0.8680, z: -0.0760 mag: 1.0272
+x: 0.5440, y: -0.8720, z: -0.0760 mag: 1.0306
+x: 0.5440, y: -0.8720, z: -0.0760 mag: 1.0306
+x: 0.5440, y: -0.8720, z: -0.0760 mag: 1.0306
+x: 0.5440, y: -0.8720, z: -0.0760 mag: 1.0306
+x: 0.5440, y: -0.8720, z: -0.0760 mag: 1.0306
+x: 0.5440, y: -0.8720, z: -0.0760 mag: 1.0306
+x: 0.5440, y: -0.8720, z: -0.0760 mag: 1.0306
+x: 0.5440, y: -0.8720, z: -0.0760 mag: 1.0306
+x: 0.5440, y: -0.8720, z: -0.0760 mag: 1.0306
+x: 0.5440, y: -0.8720, z: -0.0720 mag: 1.0303
+x: 0.5480, y: -0.8800, z: -0.0720 mag: 1.0392
+x: 0.5480, y: -0.8800, z: -0.0720 mag: 1.0392
+x: 0.5480, y: -0.8800, z: -0.0720 mag: 1.0392
+x: 0.5480, y: -0.8800, z: -0.0720 mag: 1.0392
+x: 0.5480, y: -0.8800, z: -0.0720 mag: 1.0392
+x: 0.5480, y: -0.8800, z: -0.0720 mag: 1.0392
+x: 0.5480, y: -0.8800, z: -0.0720 mag: 1.0392
+x: 0.5480, y: -0.8800, z: -0.0720 mag: 1.0392
+x: 0.5480, y: -0.8800, z: -0.0720 mag: 1.0392
+x: 0.5480, y: -0.8800, z: -0.0720 mag: 1.0392
+x: 0.5480, y: -0.8800, z: -0.0720 mag: 1.0392
+x: 0.5480, y: -0.8800, z: -0.0720 mag: 1.0392
+x: 0.5480, y: -0.8800, z: -0.0720 mag: 1.0392
+x: 0.5480, y: -0.8800, z: -0.0720 mag: 1.0392
+x: 0.5480, y: -0.8800, z: -0.0720 mag: 1.0392
+x: 0.5480, y: -0.8800, z: -0.0720 mag: 1.0392
+x: 0.5480, y: -0.8800, z: -0.0720 mag: 1.0392
+x: 0.5480, y: -0.8800, z: -0.0720 mag: 1.0392
+x: 0.5480, y: -0.8800, z: -0.0800 mag: 1.0398
+x: 0.5480, y: -0.8960, z: -0.0960 mag: 1.0547
 ```
+### Noise at 2G
+![DC noise at 2G](.gitea/graph-2g.png)
 
-FIFO demo:
-```
-$ ./lis3dh 
-FIFO =>
-x: 0.5280, y: -0.8760, z: -0.0080
-x: 0.5320, y: -0.8920, z: -0.0120
-x: 0.5280, y: -0.8680, z: -0.0040
-x: 0.5280, y: -0.8800, z: 0.0080
-x: 0.5400, y: -0.8920, z: 0.0120
-x: 0.5400, y: -0.8960, z: 0.0120
-x: 0.5400, y: -0.8960, z: 0.0000
-x: 0.5560, y: -0.8840, z: -0.0040
-x: 0.5360, y: -0.8840, z: -0.0160
-x: 0.5560, y: -0.8840, z: -0.0040
-x: 0.5320, y: -0.8960, z: 0.0080
-x: 0.5400, y: -0.8880, z: -0.0040
-x: 0.5320, y: -0.8800, z: 0.0000
-x: 0.5560, y: -0.8920, z: 0.0120
-x: 0.5280, y: -0.8680, z: -0.0120
-x: 0.5440, y: -0.8760, z: 0.0000
-x: 0.5520, y: -0.8880, z: -0.0040
-x: 0.5400, y: -0.8840, z: -0.0160
-x: 0.5560, y: -0.8840, z: -0.0040
-x: 0.5360, y: -0.8840, z: -0.0040
-x: 0.5360, y: -0.8880, z: -0.0160
-x: 0.5560, y: -0.8920, z: 0.0080
-x: 0.5400, y: -0.8880, z: -0.0120
-x: 0.5560, y: -0.8840, z: -0.0160
-x: 0.5480, y: -0.8800, z: 0.0040
-x: 0.5520, y: -0.8880, z: -0.0040
-x: 0.5280, y: -0.8680, z: -0.0160
-x: 0.5560, y: -0.8920, z: -0.0040
-x: 0.5400, y: -0.8840, z: -0.0040
-x: 0.5360, y: -0.8880, z: -0.0080
-x: 0.5280, y: -0.8680, z: -0.0120
-x: 0.5480, y: -0.8880, z: -0.0120
-<= FIFO
+### Noise at 4G
+![DC noise at 4G](.gitea/graph-4g.png)
+
+### Noise at 8G
+![DC noise at 8G](.gitea/graph-8g.png)
+
+### Noise at 16G
+![DC noise at 16G](.gitea/graph-16g.png)
+
+## Using i2c on STM32
+Simple example code
+```c
+#define LIS3DH_I2C_ADDR 0x18
+
+int i2c_write(uint8_t reg, uint8_t value) {
+	uint8_t buf[2] = { reg, value };
+	HAL_I2C_Master_Transmit(&hi2c2, LIS3DH_I2C_ADDR << 1, buf, 2, HAL_MAX_DELAY);
+	return 0;
+}
+
+int i2c_read(uint8_t reg, uint8_t *dst, uint32_t size) {
+	uint8_t send[2] = { reg, 0x00 };
+	HAL_I2C_Master_Transmit(&hi2c2, LIS3DH_I2C_ADDR << 1, send, 2, HAL_MAX_DELAY);
+	HAL_I2C_Master_Receive(&hi2c2, LIS3DH_I2C_ADDR << 1, dst, size, HAL_MAX_DELAY);
+	return 0;
+}
 ```
\ No newline at end of file
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