diff --git a/eink.hpp b/eink.hpp
index b62ad9a..47b4c0c 100644
--- a/eink.hpp
+++ b/eink.hpp
@@ -7,11 +7,11 @@
 #include <cstddef>
 #include <cstdint>
 
-#include <avr/pgmspace.h>
-
 #include "eink_spi.hpp"
+#include "otp.hpp"
 
 #include "../clock.hpp"
+#include "../flash/flash.hpp"
 #include "../io/io.hpp"
 #include "../util/util.hpp"
 
@@ -24,17 +24,6 @@ class Eink {
 	static io::Pin<RstPin> m_rst;
 	static io::Pin<BusyPin> m_busy;
 
-	template <typename T>
-	static T pgm_load(const T &object)
-	{
-		auto buffer = T{};
-		auto rawBuffer = reinterpret_cast<std::byte *>(&buffer);
-		for (auto i = std::size_t{0}; i < sizeof(T); ++i) {
-			rawBuffer[i] = static_cast<std::byte>(pgm_read_byte(&reinterpret_cast<const std::byte *>(&object)[i]));
-		}
-		return buffer;
-	}
-
   public:
 	enum class Cmd : std::uint8_t {
 		DRIVER_OUTPUT_CONTROL = 0x01,
@@ -46,7 +35,10 @@ class Eink {
 		DISPLAY_UPDATE_CONTROL_2 = 0x22,
 		WRITE_RAM_BLACK = 0x24,
 		WRITE_RAM_RED = 0x26,
+		READ_RAM = 0x27,
+		LOAD_OTP_TO_RAM = 0x31,
 		BORDER_WAVEFORM_CONTROL = 0x3C,
+		READ_RAM_CHANNEL = 0x41,
 		SET_RAM_X_ADDR_POSITIONS = 0x44,
 		SET_RAM_Y_ADDR_POSITIONS = 0x45,
 		SET_RAM_X_ADDR = 0x4E,
@@ -54,9 +46,9 @@ class Eink {
 	};
 
 	enum class Color : std::uint8_t {
-		BLACK,
-		WHITE,
-		RED,
+		BLACK = 0x00,
+		RED = 0x01,
+		WHITE = 0x02,
 	};
 
 	enum class RamDirection : std::uint8_t {
@@ -152,7 +144,7 @@ class Eink {
 		constexpr auto sendImageChannel = [](const auto command, const auto &image) {
 			sendCommand(command);
 			for (auto j = std::size_t{0}; j < image.size(); ++j) {
-				const auto [count, data] = pgm_load(image[j]);
+				const auto [count, data] = flash::load(image[j]);
 				for (auto i = std::uint16_t{0}; i < count; ++i) {
 					if (command == Cmd::WRITE_RAM_BLACK) {
 						sendData(data);
@@ -176,12 +168,12 @@ class Eink {
 	{
 		constexpr auto getFillData = [](const auto &color) -> std::pair<std::uint8_t, std::uint8_t> {
 			switch (color) {
-			case Color::WHITE:
-				return {0xFF, 0x00};
 			case Color::BLACK:
 				return {0x00, 0x00};
 			case Color::RED:
 				return {0xFF, 0xFF};
+			case Color::WHITE:
+				return {0xFF, 0x00};
 			}
 			return {0xFF, 0x00};
 		};
@@ -264,6 +256,60 @@ class Eink {
 		sendData((pos >> 8) & 0b1);
 	}
 
+	template <typename PrintFn>
+	static void dumpOTP(PrintFn &&printFn)
+	{
+		constexpr auto byteWidth = Width / 8;
+		constexpr auto ramHeight = Height + 46;
+
+		constexpr auto xRamRange = std::pair<std::uint8_t, std::uint8_t>{0, byteWidth - 1};
+		constexpr auto yRamRange = std::pair<std::uint16_t, std::uint16_t>{0, ramHeight - 1};
+
+		setDataEntryMode(RamDirection::INCREMENT, RamDirection::INCREMENT, FastestMovingIndex::X);
+		setRamRange(xRamRange, yRamRange);
+		setRamXPos(0);
+		setRamYPos(0);
+
+		sendCommand(Cmd::WRITE_RAM_BLACK);
+		for (auto i = std::uint16_t{0}; i < byteWidth * ramHeight; i++) {
+			sendData(0xFF);
+		}
+		sendCommand(Cmd::WRITE_RAM_RED);
+		for (auto i = std::uint16_t{0}; i < byteWidth * ramHeight; i++) {
+			sendData(0x00);
+		}
+
+		sendCommand(Cmd::DISPLAY_UPDATE_CONTROL_2);
+		sendData(0xF7);
+		sendCommand(Cmd::UPDATE_DISPLAY);
+		waitUntilIdle();
+
+		//////////////////////////////////////////////////////////////////////////
+
+		sendCommand(Cmd::DISPLAY_UPDATE_CONTROL_2);
+		sendData(0x80);
+		sendCommand(Cmd::UPDATE_DISPLAY);
+		waitUntilIdle();
+
+		sendCommand(Cmd::LOAD_OTP_TO_RAM);
+		waitUntilIdle();
+
+		setRamXPos(0);
+		setRamYPos(0);
+
+		sendCommand(Cmd::READ_RAM_CHANNEL);
+		sendData(static_cast<word_t>(Color::BLACK));
+
+		sendCommand(Cmd::READ_RAM);
+		readData(); // First byte must be discarded
+
+		for (auto i = std::size_t{0}; i < sizeof(OTP); ++i) {
+			printFn(readData());
+		}
+
+		init();
+	}
+
 	static void sleep()
 	{
 		sendCommand(Cmd::DEEP_SLEEP_MODE);
diff --git a/otp.hpp b/otp.hpp
new file mode 100644
index 0000000..b79ac10
--- /dev/null
+++ b/otp.hpp
@@ -0,0 +1,353 @@
+#pragma once
+
+#include <cstddef>
+#include <cstdint>
+
+namespace eink {
+
+// [SOURCE]_[VCOM]
+enum class Voltage : std::uint8_t {
+	VSS_DCVCOM = 0b00,
+	VSH1_VSH1DCVCOM = 0b01,
+	VSL_VSLDCVCOM = 0b10,
+	VSH2_NA = 0b11,
+};
+
+struct [[gnu::packed]] Phases
+{
+	Voltage phaseD : 2;
+	Voltage phaseC : 2;
+	Voltage phaseB : 2;
+	Voltage phaseA : 2;
+};
+static_assert(sizeof(Phases) == 1);
+
+struct [[gnu::packed]] VoltageGroups
+{
+	Phases group[12];
+};
+static_assert(sizeof(VoltageGroups) == 12);
+
+struct [[gnu::packed]] Timings
+{
+	std::uint8_t frameCountPhaseA;
+	std::uint8_t frameCountPhaseB;
+	std::uint8_t repeatSubPhaseAB;
+	std::uint8_t frameCountPhaseC;
+	std::uint8_t frameCountPhaseD;
+	std::uint8_t repeatSubPhaseCD;
+	std::uint8_t repeat;
+};
+static_assert(sizeof(Timings) == 7);
+
+struct [[gnu::packed]] FrameRates
+{
+	std::uint8_t group11 : 4;
+	std::uint8_t group10 : 4;
+	std::uint8_t group9 : 4;
+	std::uint8_t group8 : 4;
+	std::uint8_t group7 : 4;
+	std::uint8_t group6 : 4;
+	std::uint8_t group5 : 4;
+	std::uint8_t group4 : 4;
+	std::uint8_t group3 : 4;
+	std::uint8_t group2 : 4;
+	std::uint8_t group1 : 4;
+	std::uint8_t group0 : 4;
+};
+static_assert(sizeof(FrameRates) == 6);
+
+struct [[gnu::packed]] SubPhaseGateStates
+{
+	bool group11SubPhaseCD : 1;
+	bool group11SubPhaseAB : 1;
+	bool group10SubPhaseCD : 1;
+	bool group10SubPhaseAB : 1;
+	bool group9SubPhaseCD : 1;
+	bool group9SubPhaseAB : 1;
+	bool group8SubPhaseCD : 1;
+	bool group8SubPhaseAB : 1;
+	bool group7SubPhaseCD : 1;
+	bool group7SubPhaseAB : 1;
+	bool group6SubPhaseCD : 1;
+	bool group6SubPhaseAB : 1;
+	bool group5SubPhaseCD : 1;
+	bool group5SubPhaseAB : 1;
+	bool group4SubPhaseCD : 1;
+	bool group4SubPhaseAB : 1;
+	bool group3SubPhaseCD : 1;
+	bool group3SubPhaseAB : 1;
+	bool group2SubPhaseCD : 1;
+	bool group2SubPhaseAB : 1;
+	bool group1SubPhaseCD : 1;
+	bool group1SubPhaseAB : 1;
+	bool group0SubPhaseCD : 1;
+	bool group0SubPhaseAB : 1;
+};
+static_assert(sizeof(SubPhaseGateStates) == 3);
+
+struct [[gnu::packed]] Waveform
+{
+	VoltageGroups lut[5];
+	Timings timings[12];
+	FrameRates frameRates;
+	SubPhaseGateStates subPhaseGateStates;
+};
+static_assert(sizeof(Waveform) == 153);
+
+enum class LutEndOption : std::uint8_t {
+	KEEP_PREVIOUS_SOURCE_OUTPUT_LEVEL_BEFORE_POWER_OFF = 0x07,
+	NORMAL = 0x22,
+};
+static_assert(sizeof(LutEndOption) == 1);
+
+enum class GateVoltage : std::uint8_t {
+	V_20_DEFAULT = 0x00,
+	V_10 = 0x03,
+	V_10_5 = 0x04,
+	V_11 = 0x05,
+	V_11_5 = 0x06,
+	V_12 = 0x07,
+	V_12_5 = 0x08,
+	V_13 = 0x09,
+	V_13_5 = 0x0A,
+	V_14 = 0x0B,
+	V_14_5 = 0x0C,
+	V_15 = 0x0D,
+	V_15_5 = 0x0E,
+	V_16 = 0x0F,
+	V_16_5 = 0x10,
+	V_17 = 0x11,
+	V_17_5 = 0x12,
+	V_18 = 0x13,
+	V_18_5 = 0x14,
+	V_19 = 0x15,
+	V_19_5 = 0x16,
+	V_20 = 0x17,
+};
+static_assert(sizeof(GateVoltage) == 1);
+
+enum class VoltageSourceHigh : std::uint8_t {
+	V_9 = 0x23,
+	V_9_2 = 0x24,
+	V_9_4 = 0x25,
+	V_9_6 = 0x26,
+	V_9_8 = 0x27,
+	V_10 = 0x28,
+	V_10_2 = 0x29,
+	V_10_4 = 0x2A,
+	V_10_6 = 0x2B,
+	V_10_8 = 0x2C,
+	V_11 = 0x2D,
+	V_11_2 = 0x2E,
+	V_11_4 = 0x2F,
+	V_11_6 = 0x30,
+	V_11_8 = 0x31,
+	V_12 = 0x32,
+	V_12_2 = 0x33,
+	V_12_4 = 0x34,
+	V_12_6 = 0x35,
+	V_12_8 = 0x36,
+	V_13 = 0x37,
+	V_13_2 = 0x38,
+	V_13_4 = 0x39,
+	V_13_6 = 0x3A,
+	V_13_8 = 0x3B,
+	V_14 = 0x3C,
+	V_14_2 = 0x3D,
+	V_14_4 = 0x3E,
+	V_14_6 = 0x3F,
+	V_14_8 = 0x40,
+	V_15 = 0x41,
+	V_15_2 = 0x42,
+	V_15_4 = 0x43,
+	V_15_6 = 0x44,
+	V_15_8 = 0x45,
+	V_16 = 0x46,
+	V_16_2 = 0x47,
+	V_16_4 = 0x48,
+	V_16_6 = 0x49,
+	V_16_8 = 0x4A,
+	V_17 = 0x4B,
+	V_2_4 = 0x8E,
+	V_2_5 = 0x8F,
+	V_2_6 = 0x90,
+	V_2_7 = 0x91,
+	V_2_8 = 0x92,
+	V_2_9 = 0x93,
+	V_3 = 0x94,
+	V_3_1 = 0x95,
+	V_3_2 = 0x96,
+	V_3_3 = 0x97,
+	V_3_4 = 0x98,
+	V_3_5 = 0x99,
+	V_3_6 = 0x9A,
+	V_3_7 = 0x9B,
+	V_3_8 = 0x9C,
+	V_3_9 = 0x9D,
+	V_4 = 0x9E,
+	V_4_1 = 0x9F,
+	V_4_2 = 0xA0,
+	V_4_3 = 0xA1,
+	V_4_4 = 0xA2,
+	V_4_5 = 0xA3,
+	V_4_6 = 0xA4,
+	V_4_7 = 0xA5,
+	V_4_8 = 0xA6,
+	V_4_9 = 0xA7,
+	V_5 = 0xA8,
+	V_5_1 = 0xA9,
+	V_5_2 = 0xAA,
+	V_5_3 = 0xAB,
+	V_5_4 = 0xAC,
+	V_5_5 = 0xAD,
+	V_5_6 = 0xAE,
+	V_5_7 = 0xAF,
+	V_5_8 = 0xB0,
+	V_5_9 = 0xB1,
+	V_6 = 0xB2,
+	V_6_1 = 0xB3,
+	V_6_2 = 0xB4,
+	V_6_3 = 0xB5,
+	V_6_4 = 0xB6,
+	V_6_5 = 0xB7,
+	V_6_6 = 0xB8,
+	V_6_7 = 0xB9,
+	V_6_8 = 0xBA,
+	V_6_9 = 0xBB,
+	V_7 = 0xBC,
+	V_7_1 = 0xBD,
+	V_7_2 = 0xBE,
+	V_7_3 = 0xBF,
+	V_7_4 = 0xC0,
+	V_7_5 = 0xC1,
+	V_7_6 = 0xC2,
+	V_7_7 = 0xC3,
+	V_7_8 = 0xC4,
+	V_7_9 = 0xC5,
+	V_8 = 0xC6,
+	V_8_1 = 0xC7,
+	V_8_2 = 0xC8,
+	V_8_3 = 0xC9,
+	V_8_4 = 0xCA,
+	V_8_5 = 0xCB,
+	V_8_6 = 0xCC,
+	V_8_7 = 0xCD,
+	V_8_8 = 0xCE,
+};
+static_assert(sizeof(VoltageSourceHigh) == 1);
+
+enum class VoltageSourceLow : std::uint8_t {
+	NEG_5 = 0x0A,
+	NEG_5_5 = 0x0C,
+	NEG_6 = 0x0E,
+	NEG_6_5 = 0x10,
+	NEG_7 = 0x12,
+	NEG_7_5 = 0x14,
+	NEG_8 = 0x16,
+	NEG_8_5 = 0x18,
+	NEG_9 = 0x1A,
+	NEG_9_5 = 0x1C,
+	NEG_10 = 0x1E,
+	NEG_10_5 = 0x20,
+	NEG_11 = 0x22,
+	NEG_11_5 = 0x24,
+	NEG_12 = 0x26,
+	NEG_12_5 = 0x28,
+	NEG_13 = 0x2A,
+	NEG_13_5 = 0x2C,
+	NEG_14 = 0x2E,
+	NEG_14_5 = 0x30,
+	NEG_15 = 0x32,
+	NEG_15_5 = 0x34,
+	NEG_16 = 0x36,
+	NEG_16_5 = 0x38,
+	NEG_17 = 0x3A,
+};
+static_assert(sizeof(VoltageSourceLow) == 1);
+
+struct [[gnu::packed]] SourceVoltage
+{
+	VoltageSourceHigh vsh1;
+	VoltageSourceHigh vsh2;
+	VoltageSourceLow vsl;
+};
+static_assert(sizeof(SourceVoltage) == 3);
+
+enum class CommonVoltage : std::uint8_t {
+	NEG_0_2 = 0x08,
+	NEG_0_3 = 0x0C,
+	NEG_0_4 = 0x10,
+	NEG_0_5 = 0x14,
+	NEG_0_6 = 0x18,
+	NEG_0_7 = 0x1C,
+	NEG_0_8 = 0x20,
+	NEG_0_9 = 0x24,
+	NEG_1 = 0x28,
+	NEG_1_1 = 0x2C,
+	NEG_1_2 = 0x30,
+	NEG_1_3 = 0x34,
+	NEG_1_4 = 0x38,
+	NEG_1_5 = 0x3C,
+	NEG_1_6 = 0x40,
+	NEG_1_7 = 0x44,
+	NEG_1_8 = 0x48,
+	NEG_1_9 = 0x4C,
+	NEG_2 = 0x50,
+	NEG_2_1 = 0x54,
+	NEG_2_2 = 0x58,
+	NEG_2_3 = 0x5C,
+	NEG_2_4 = 0x60,
+	NEG_2_5 = 0x64,
+	NEG_2_6 = 0x68,
+	NEG_2_7 = 0x6C,
+	NEG_2_8 = 0x70,
+	NEG_2_9 = 0x74,
+	NEG_3 = 0x78,
+};
+static_assert(sizeof(CommonVoltage) == 1);
+
+struct [[gnu::packed]] WaveformSetting
+{
+	Waveform waveform;
+	LutEndOption lutEndOption;
+	GateVoltage gateVoltage;
+	SourceVoltage sourceVoltage;
+	CommonVoltage commonVoltage;
+};
+static_assert(sizeof(WaveformSetting) == 159);
+
+struct [[gnu::packed]] TemperatureRange
+{
+	std::uint8_t lowerBoundLowBits;
+	std::uint8_t lowerBoundHighBits : 4;
+	std::uint8_t upperBoundLowBits : 4;
+	std::uint8_t upperBoundHighBits;
+
+	inline constexpr operator std::pair<float, float>() const
+	{
+		constexpr auto convertTemp = [](const auto &temp) {
+			auto signedTemp = static_cast<std::int16_t>(temp);
+			if (signedTemp >> 11 & 1) {
+				signedTemp |= 0b1111 << 12;
+			}
+			const auto tempDegrees = signedTemp / 16.0f;
+			return tempDegrees;
+		};
+
+		const auto lowerBound = static_cast<std::uint16_t>(lowerBoundHighBits) << 8 | lowerBoundLowBits;
+		const auto upperBound = static_cast<std::uint16_t>(upperBoundHighBits) << 4 | upperBoundLowBits;
+
+		return {convertTemp(lowerBound), convertTemp(upperBound)};
+	};
+};
+static_assert(sizeof(TemperatureRange) == 3);
+
+struct [[gnu::packed]] OTP
+{
+	WaveformSetting waveforms[36];
+	TemperatureRange temperatures[36];
+};
+static_assert(sizeof(OTP) == 5832);
+
+} // namespace eink