diff --git a/st7567-i2c.h b/st7567-i2c.h
deleted file mode 100644
index 27bbf4d..0000000
--- a/st7567-i2c.h
+++ /dev/null
@@ -1,129 +0,0 @@
-#ifndef ST7567_H
-#define ST7567_H
-
-#include "esp_err.h"
-#include "driver/i2c_master.h"
-
-// Display dimensions
-#define ST7567_WIDTH  128
-#define ST7567_HEIGHT 64
-#define ST7567_PAGES  (ST7567_HEIGHT / 8)
-
-// Default I2C 7-bit address for most ST7567 breakout boards (some use 0x3F)
-#define ST7567_I2C_ADDR_DEFAULT 0x3F
-
-// ST7567 command set
-#define ST7567_CMD_DISPLAY_OFF       0xAE
-#define ST7567_CMD_DISPLAY_ON        0xAF
-#define ST7567_CMD_START_LINE        0x40  // OR with 0-63
-#define ST7567_CMD_PAGE_ADDR         0xB0  // OR with 0-8
-#define ST7567_CMD_COL_ADDR_HIGH     0x10  // OR with high nibble
-#define ST7567_CMD_COL_ADDR_LOW      0x00  // OR with low nibble
-#define ST7567_CMD_ADC_NORMAL        0xA0  // column addr 0 = SEG0
-#define ST7567_CMD_ADC_REVERSE       0xA1  // column addr 131 = SEG0
-#define ST7567_CMD_ALL_PIXEL_NORMAL  0xA4
-#define ST7567_CMD_ALL_PIXEL_ON      0xA5
-#define ST7567_CMD_DISPLAY_NORMAL    0xA6
-#define ST7567_CMD_DISPLAY_INVERSE   0xA7
-#define ST7567_CMD_BIAS_1_9          0xA2
-#define ST7567_CMD_BIAS_1_7          0xA3
-#define ST7567_CMD_RESET             0xE2
-#define ST7567_CMD_COM_NORMAL        0xC0
-#define ST7567_CMD_COM_REVERSE       0xC8
-#define ST7567_CMD_POWER_CTRL        0x28  // OR with 0-7 (booster/regulator/follower bits)
-#define ST7567_CMD_RESISTOR_RATIO    0x20  // OR with 0-7
-#define ST7567_CMD_CONTRAST_MODE     0x81  // followed by a second byte, 0-63
-#define ST7567_CMD_STATIC_INDICATOR_OFF 0xAC
-#define ST7567_CMD_NOP               0xE3
-
-// Configuration structure
-typedef struct {
-    i2c_master_bus_handle_t i2c_bus;  // already-initialized I2C bus
-    uint16_t i2c_addr;                // 7-bit device address, 0 = use ST7567_I2C_ADDR_DEFAULT
-    uint32_t i2c_clock_speed_hz;      // 0 = use 400kHz default
-    uint8_t contrast;                 // 0-63, 0 = use a sane default (0x20)
-} st7567_config_t;
-
-// Handle for ST7567 device
-typedef struct {
-    i2c_master_dev_handle_t i2c_dev;
-    uint8_t framebuffer[ST7567_WIDTH * ST7567_PAGES];
-} st7567_device_t;
-
-/**
- * @brief Initialize ST7567 display
- *
- * @param config Configuration structure
- * @param device Pointer to store device state (framebuffer etc, caller-owned)
- * @return esp_err_t ESP_OK on success
- */
-esp_err_t st7567_init(const st7567_config_t *config, st7567_device_t *device);
-
-/**
- * @brief Send a single command byte to the ST7567
- *
- * @param dev Device handle
- * @param cmd Command byte
- * @return esp_err_t ESP_OK on success
- */
-esp_err_t st7567_send_cmd(const st7567_device_t *dev, uint8_t cmd);
-
-/**
- * @brief Send a data buffer to the ST7567
- *
- * @param dev Device handle
- * @param data Pointer to data buffer
- * @param len Length of data buffer
- * @return esp_err_t ESP_OK on success
- */
-esp_err_t st7567_send_data(const st7567_device_t *dev, const uint8_t *data, size_t len);
-
-/**
- * @brief Clear the display (just wipe framebuffer, don't send any commands)
- *
- * @param dev Device handle
- */
-void st7567_clear_buffer(st7567_device_t *dev);
-
-/**
- * @brief Clear the display (both GDRAM and local framebuffer)
- *
- * @param dev Device handle
- * @return esp_err_t ESP_OK on success
- */
-esp_err_t st7567_clear(st7567_device_t *dev);
-
-/**
- * @brief Set contrast (electronic volume)
- *
- * @param dev Device handle
- * @param contrast 0-63
- * @return esp_err_t ESP_OK on success
- */
-esp_err_t st7567_set_contrast(const st7567_device_t *dev, uint8_t contrast);
-
-/**
- * @brief Push the local framebuffer contents to the display
- *
- * @param dev Device handle
- * @return esp_err_t ESP_OK on success
- */
-esp_err_t st7567_update_screen(const st7567_device_t *dev);
-
-/**
- * @brief Turn a pixel ON at given coordinates
- * @param dev Device handle
- * @param x x coordinate
- * @param y y coordinate
- */
-void st7567_draw_pixel(void *dev, uint8_t x, uint8_t y);
-
-/**
- * @brief Turn a pixel OFF at given coordinates
- * @param dev Device handle
- * @param x x coordinate
- * @param y y coordinate
- */
-void st7567_clear_pixel(void *dev, uint8_t x, uint8_t y);
-
-#endif // ST7567_H