### Install Jetson.GPIO Library

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/2in15_e-Paper_B/RaspberryPi_JetsonNano/python/readme_jetson_CN.txt

Installs the Jetson.GPIO library for controlling the GPIO pins on the Jetson Nano.

```bash
sudo pip install Jetson.GPIO
```

```bash
sudo pip3 install Jetson.GPIO
```

--------------------------------

### Raspberry Pi SPI and Python Setup

Source: https://context7.com/waveshareteam/e-paper/llms.txt

Enables the SPI interface on Raspberry Pi using raspi-config, installs necessary Python dependencies via pip, and installs the waveshare-epd package. Includes commands to run a test example and compile the C library.

```bash
# Enable SPI interface on Raspberry Pi
sudo raspi-config
# Navigate to: Interface Options -> SPI -> Enable

# Install Python dependencies
cd RaspberryPi_JetsonNano/python
sudo pip3 install -r requirements.txt
# Or install directly
sudo pip3 install spidev RPi.GPIO Pillow

# Install the waveshare-epd package
sudo python3 setup.py install

# Run example (match your display model)
cd examples
python3 epd_2in13_V4_test.py

# For C library compilation
cd ../c
make clean
make
sudo ./epd
```

--------------------------------

### Install Python 2 Dependencies

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/10in2_e-Paper_G/RaspberryPi_JetsonNano/python/readme_rpi_EN.txt

Use these commands to install the necessary libraries for Python 2 environments.

```bash
sudo apt-get update
sudo apt-get install python-pip
sudo apt-get install python-pil
sudo pip install RPi.GPIO
```

--------------------------------

### Install Python 3 Dependencies

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/10in2_e-Paper_G/RaspberryPi_JetsonNano/python/readme_rpi_EN.txt

Use these commands to install the necessary libraries for Python 3 environments.

```bash
sudo apt-get update
sudo apt-get install python3-pip
sudo apt-get install python3-pil
sudo pip3 install RPi.GPIO
```

--------------------------------

### Install Python Pip and PIL

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/2in15_e-Paper_B/RaspberryPi_JetsonNano/python/readme_jetson_CN.txt

Installs pip and the Python Imaging Library (PIL) required for e-paper display control on Jetson Nano.

```bash
sudo apt-get update
sudo apt-get install python-pip
sudo apt-get install python-pil
```

```bash
sudo apt-get update
sudo apt-get install python3-pip
sudo apt-get install python3-pil
```

--------------------------------

### Install Python Libraries for Raspberry Pi

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/3in97_e-Paper/RaspberryPi_JetsonNano/python/readme_rpi_EN.txt

Installs necessary Python libraries for Raspberry Pi using apt-get and pip.

```bash
sudo apt-get update
    sudo apt-get install python-pip
    sudo apt-get install python-pil
    sudo pip install RPi.GPIO
```

--------------------------------

### HAL_DMA_Start

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/13.3inch_e-Paper_E/STM32-F103ZET6/MDK-ARM/epd-demo/epd-demo.htm

Starts the DMA transfer.

```APIDOC
## HAL_DMA_Start

### Description
Starts the DMA transfer with the provided source and destination addresses.

### Method
Function Call

### Parameters
- **hdma** (DMA_HandleTypeDef*) - Required - Pointer to a DMA_HandleTypeDef structure
- **SrcAddress** (uint32_t) - Required - Source memory address
- **DstAddress** (uint32_t) - Required - Destination memory address
- **DataLength** (uint32_t) - Required - Length of data to be transferred
```

--------------------------------

### Install Python Libraries for Raspberry Pi (Python 3)

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/3in97_e-Paper/RaspberryPi_JetsonNano/python/readme_rpi_EN.txt

Installs necessary Python 3 libraries for Raspberry Pi using apt-get and pip3.

```bash
sudo apt-get update
    sudo apt-get install python3-pip
    sudo apt-get install python3-pil
    sudo pip3 install RPi.GPIO
```

--------------------------------

### Install Python 3 Dependencies

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/10.85inch_e-Paper/RaspberryPi/python/readme_jetson_EN.txt

Commands to install the necessary Python 3 libraries for the e-paper driver on Jetson Nano.

```bash
sudo apt-get update
sudo apt-get install python3-pip
sudo apt-get install python3-pil
sudo pip3 install Jetson.GPIO
```

--------------------------------

### Install Python 2 Dependencies

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/10.85inch_e-Paper/RaspberryPi/python/readme_jetson_EN.txt

Commands to install the necessary Python 2 libraries for the e-paper driver on Jetson Nano.

```bash
sudo apt-get update
sudo apt-get install python-pip
sudo apt-get install python-pil
sudo pip install Jetson.GPIO
```

--------------------------------

### Install Python Libraries for Jetson Nano

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/10in2_e-Paper_G/RaspberryPi_JetsonNano/python/readme_jetson_EN.txt

Install necessary Python libraries using apt-get and pip for Jetson Nano. Ensure you use the correct pip version (pip for Python 2 or pip3 for Python 3).

```bash
sudo apt-get update
sudo apt-get install python-pip
sudo apt-get install python-pil
sudo pip install Jetson.GPIO
```

```bash
sudo apt-get update
sudo apt-get install python3-pip
sudo apt-get install python3-pil
sudo pip3 install Jetson.GPIO
```

--------------------------------

### Compile-time EPD Define Example

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/2in15_e-Paper_G/RaspberryPi_JetsonNano/c/list.txt

To use a specific EPD model, such as the 7.5inch e-Paper (B) (V2), set the EPD define during the make process. This ensures the correct drivers and configurations are used for your display.

```bash
sudo make clean
sudo make EPD=epd7in5bV2
```

--------------------------------

### Install Python Libraries for E-Paper

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/2in13_e-Paper_G/RaspberryPi_JetsonNano/python/readme_rpi_EN.txt

Installs necessary Python libraries for e-paper display control on Raspberry Pi or Jetson Nano. Ensure you use the correct pip version (pip or pip3) based on your Python installation.

```bash
sudo apt-get update
sudo apt-get install python-pip
sudo apt-get install python-pil
sudo pip install RPi.GPIO
```

```bash
sudo apt-get update
sudo apt-get install python3-pip
sudo apt-get install python3-pil
sudo pip3 install RPi.GPIO
```

--------------------------------

### Module Initialization and Exit

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/10.85inch_e-Paper/STM32-F103ZET6/User/Readme_EN.txt

Functions to initialize the module and handle power-down states.

```c
Void DEV_Module_Init(void);
        Void DEV_Module_Exit(void);
```

--------------------------------

### Perform Basic Display Operations in C

Source: https://context7.com/waveshareteam/e-paper/llms.txt

Initializes the display hardware, allocates a memory buffer, and draws primitives using the GUI_Paint library.

```c
#include "DEV_Config.h"
#include "EPD_2in13_V4.h"
#include "GUI_Paint.h"
#include <stdlib.h>

int main(void)
{
    // Initialize hardware interface
    if (DEV_Module_Init() != 0) {
        return -1;
    }

    // Initialize display
    EPD_2in13_V4_Init();
    EPD_2in13_V4_Clear();

    // Allocate image buffer
    UWORD Imagesize = ((EPD_2in13_V4_WIDTH % 8 == 0) ?
                       (EPD_2in13_V4_WIDTH / 8) :
                       (EPD_2in13_V4_WIDTH / 8 + 1)) * EPD_2in13_V4_HEIGHT;
    UBYTE *BlackImage = (UBYTE *)malloc(Imagesize);
    if (BlackImage == NULL) {
        return -1;
    }

    // Create image canvas (90 degree rotation for landscape)
    Paint_NewImage(BlackImage, EPD_2in13_V4_WIDTH, EPD_2in13_V4_HEIGHT, 90, WHITE);
    Paint_SelectImage(BlackImage);
    Paint_Clear(WHITE);

    // Draw graphics primitives
    Paint_DrawPoint(10, 10, BLACK, DOT_PIXEL_3X3, DOT_STYLE_DFT);
    Paint_DrawLine(20, 10, 70, 60, BLACK, DOT_PIXEL_1X1, LINE_STYLE_SOLID);
    Paint_DrawRectangle(20, 10, 70, 60, BLACK, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
    Paint_DrawRectangle(85, 10, 135, 60, BLACK, DOT_PIXEL_1X1, DRAW_FILL_FULL);
    Paint_DrawCircle(45, 85, 20, BLACK, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);

    // Draw text
    Paint_DrawString_EN(140, 15, "Waveshare", &Font16, BLACK, WHITE);
    Paint_DrawNum(140, 40, 12345, &Font16, BLACK, WHITE);

    // Send to display
    EPD_2in13_V4_Display(BlackImage);
    DEV_Delay_ms(3000);

    // Clean up
    EPD_2in13_V4_Clear();
    EPD_2in13_V4_Sleep();
    free(BlackImage);
    DEV_Module_Exit();

    return 0;
}
```

--------------------------------

### System Initialization

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/10in2_e-Paper_G/STM32-F103ZET6/MDK-ARM/epd-demo/epd-demo.htm

Functions related to system initialization.

```APIDOC
## SystemInit

### Description
Initializes the system.

### Method
N/A

### Endpoint
N/A

### Parameters
N/A

### Request Example
N/A

### Response
N/A

## SystemCoreClockUpdate

### Description
Updates the system core clock.

### Method
N/A

### Endpoint
N/A

### Parameters
N/A

### Request Example
N/A

### Response
N/A
```

--------------------------------

### System Initialization API

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/4inch_e-Paper_E/STM32-F103ZET6/MDK-ARM/epd-demo/epd-demo.htm

Core system functions for initializing the HAL and system tick.

```APIDOC
## HAL_Init

### Description
Initializes the Flash interface, the NVIC, and the Systick.

## HAL_InitTick

### Description
Initializes the system tick timer to provide a time base.

## HAL_GetTick

### Description
Returns the current system tick value.
```

--------------------------------

### USART Initialization and MSP

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/2.9inch_e-Paper_G/STM32-F103ZET6/MDK-ARM/epd-demo/epd-demo.htm

Information about MX_USART1_UART_Init and HAL_UART_MspInit functions, including stack usage and call chains.

```APIDOC
## USART Initialization and MSP

### MX_USART1_UART_Init

*   **Details**: Thumb, 48 bytes, Stack size 8 bytes
*   **Source File**: usart.o(.text)
*   **Stack Usage**: Max Depth = 96
*   **Call Chain**: MX_USART1_UART_Init ⇒ HAL_UART_Init ⇒ HAL_UART_MspInit ⇒ HAL_GPIO_Init
*   **Calls**: HAL_UART_Init, Error_Handler
*   **Called By**: main

### HAL_UART_MspInit

*   **Details**: Thumb, 100 bytes, Stack size 32 bytes
*   **Source File**: usart.o(.text)
*   **Stack Usage**: Max Depth = 72
*   **Call Chain**: HAL_UART_MspInit ⇒ HAL_GPIO_Init
*   **Calls**: HAL_GPIO_Init
*   **Called By**: HAL_UART_Init, HAL_MultiProcessor_Init, HAL_LIN_Init, HAL_HalfDuplex_Init
```

--------------------------------

### HAL UART GetState

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/2in15_e-Paper_B/STM32-F103ZET6/MDK-ARM/epd-demo/epd-demo.htm

Gets the current UART state.

```APIDOC
## HAL_UART_GetState

### Description
Gets the current state of the UART peripheral.
```

--------------------------------

### Main Function and Initialization

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/2.9inch_e-Paper_G/STM32-F103ZET6/MDK-ARM/epd-demo/epd-demo.htm

Details of the main function and its calls to various initialization routines and HAL functions.

```APIDOC
## Main Function and Initialization

### main

*   **Details**: Thumb, 36 bytes, Stack size 0 bytes
*   **Source File**: main.o(.text)
*   **Stack Usage**: Max Depth = 752
*   **Call Chain**: main ⇒ EPD_2in9g_test ⇒ Paint_DrawNum ⇒ Paint_DrawString_EN ⇒ Paint_DrawChar ⇒ Paint_SetPixel ⇒ __2printf
*   **Calls**: MX_USART1_UART_Init, MX_SPI1_Init, MX_GPIO_Init, HAL_Init, HAL_Delay, EPD_2in9g_test, SystemClock_Config
*   **Address Reference Count**: 1
*   **References**: entry9a.o(.ARM.Collect$$$$0000000B)
```

--------------------------------

### HAL UART GetError

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/2in15_e-Paper_B/STM32-F103ZET6/MDK-ARM/epd-demo/epd-demo.htm

Gets the current UART error code.

```APIDOC
## HAL_UART_GetError

### Description
Gets the current error code for the UART peripheral.
```

--------------------------------

### HAL_SPI_Init

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/13.3inch_e-Paper_E/STM32-F103ZET6/MDK-ARM/epd-demo/epd-demo.htm

Initializes the SPI peripheral according to the specified parameters.

```APIDOC
## HAL_SPI_Init

### Description
Initializes the SPI peripheral.

### Method
Function Call

### Parameters
- **hspi** (SPI_HandleTypeDef*) - Required - Pointer to a SPI_HandleTypeDef structure that contains the configuration information for the specified SPI module.
```

--------------------------------

### DMA Functions

Source: https://github.com/waveshareteam/e-paper/blob/master/STM32/STM32-F103ZET6/MDK-ARM/epd-demo/epd-demo.htm

Functions for initializing, de-initializing, starting, stopping, and managing DMA transfers.

```APIDOC
## HAL_DMA_Init

### Description
Initializes the DMA according to the specified parameters.

### Method
Not specified (typically called internally or during system initialization)

### Endpoint
N/A

### Parameters
None explicitly listed in the provided text.

### Request Example
N/A

### Response
N/A

## HAL_DMA_DeInit

### Description
De-initializes the DMA.

### Method
Not specified

### Endpoint
N/A

### Parameters
None explicitly listed in the provided text.

### Request Example
N/A

### Response
N/A

## HAL_DMA_Start

### Description
Starts the DMA transfer.

### Method
Not specified

### Endpoint
N/A

### Parameters
None explicitly listed in the provided text.

### Request Example
N/A

### Response
N/A

## HAL_DMA_Start_IT

### Description
Starts the DMA transfer with interrupt enabled.

### Method
Not specified

### Endpoint
N/A

### Parameters
None explicitly listed in the provided text.

### Request Example
N/A

### Response
N/A

## HAL_DMA_Abort

### Description
Aborts the DMA transfer.

### Method
Not specified

### Endpoint
N/A

### Parameters
None explicitly listed in the provided text.

### Request Example
N/A

### Response
N/A

## HAL_DMA_Abort_IT

### Description
Aborts the DMA transfer with interrupt enabled.

### Method
Not specified

### Endpoint
N/A

### Parameters
None explicitly listed in the provided text.

### Request Example
N/A

### Response
N/A

## HAL_DMA_PollForTransfer

### Description
Polls for the completion of a DMA transfer.

### Method
Not specified

### Endpoint
N/A

### Parameters
None explicitly listed in the provided text.

### Request Example
N/A

### Response
N/A

## HAL_DMA_IRQHandler

### Description
DMA interrupt handler.

### Method
Not specified (typically called by the interrupt vector)

### Endpoint
N/A

### Parameters
None explicitly listed in the provided text.

### Request Example
N/A

### Response
N/A

## HAL_DMA_RegisterCallback

### Description
Registers a user DMA callback.

### Method
Not specified

### Endpoint
N/A

### Parameters
None explicitly listed in the provided text.

### Request Example
N/A

### Response
N/A

## HAL_DMA_UnRegisterCallback

### Description
Unregisters a user DMA callback.

### Method
Not specified

### Endpoint
N/A

### Parameters
None explicitly listed in the provided text.

### Request Example
N/A

### Response
N/A

## HAL_DMA_GetState

### Description
Gets the DMA state.

### Method
Not specified

### Endpoint
N/A

### Parameters
None explicitly listed in the provided text.

### Request Example
N/A

### Response
N/A

## HAL_DMA_GetError

### Description
Gets the DMA error code.

### Method
Not specified

### Endpoint
N/A

### Parameters
None explicitly listed in the provided text.

### Request Example
N/A

### Response
N/A
```

--------------------------------

### HAL_UART_Init

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/3in5_e-Paper_G/STM32-F103ZET6/MDK-ARM/epd-demo/epd-demo.htm

Initializes the UART peripheral with the specified configuration.

```APIDOC
## HAL_UART_Init

### Description
Initializes the UART mode according to the specified parameters in the UART_InitTypeDef and creates the associated handle.

### Method
Function Call

### Endpoint
HAL_UART_Init(UART_HandleTypeDef *huart)

### Parameters
- **huart** (UART_HandleTypeDef*) - Required - Pointer to a UART_HandleTypeDef structure that contains the configuration information for the specified UART module.
```

--------------------------------

### DMA Management Functions

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/10.85inch_e-Paper/STM32-F103ZET6/MDK-ARM/epd-demo/epd-demo.htm

Functions for initializing, starting, and managing Direct Memory Access (DMA) transfers.

```APIDOC
## HAL_DMA_Init

### Description
Initializes the DMA controller.

### Method
Function Call

## HAL_DMA_Start

### Description
Starts the DMA transfer.

### Method
Function Call

## HAL_DMA_Abort

### Description
Aborts the current DMA transfer.

### Method
Function Call
```

--------------------------------

### HAL System Initialization

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/13.3inch_e-Paper_E/STM32-F103ZET6/MDK-ARM/epd-demo/epd-demo.htm

Functions for initializing the system, managing ticks, and handling delays.

```APIDOC
## HAL_Init

### Description
Initializes the Flash interface, the NVIC setup, and the Systick timer.

### Method
Function Call

### Parameters
None

## HAL_Delay

### Description
Provides a delay in milliseconds based on the system tick.

### Method
Function Call

### Parameters
- **Delay** (uint32_t) - Required - The delay time in milliseconds.
```

--------------------------------

### Telnet Terminal Configuration

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/2in13_e-Paper_G/STM32-F103ZET6/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/DspLibTest_FVP/ARMCM23_config.txt

Configure settings for Telnet terminals, including command-line execution, mode, start behavior, port, and output suppression.

```APIDOC
## Telnet Terminal Configuration

### Description
Configure settings for Telnet terminals, including command-line execution, mode, start behavior, port, and output suppression.

### Parameters
#### Component: fvp_mps2.telnetterminal1
- **terminal_command** (string, init-time) - Optional - Commandline to launch a terminal application and connect to the opened TCP port. Keywords %port and %title will be replaced with the opened port number and component name respectively. An empty string (default behaviour) will launch xterm (Linux) or telnet.exe (Windows).

#### Component: fvp_mps2.telnetterminal2
- **mode** (string, init-time) - Optional - Terminal initialisation mode. Default: 'telnet'.
- **start_telnet** (bool, init-time) - Optional - Start telnet if nothing connected. Default: 1.
- **start_port** (int, init-time) - Optional - Telnet TCP Port Number. Default: 0x1388. Range: [0x0..0xFFFFFFFF].
- **quiet** (bool, init-time) - Optional - Avoid output on stdout/stderr. Default: 0.
- **terminal_command** (string, init-time) - Optional - Commandline to launch a terminal application and connect to the opened TCP port. Keywords %port and %title will be replaced with the opened port number and component name respectively. An empty string (default behaviour) will launch xterm (Linux) or telnet.exe (Windows).

```

--------------------------------

### Telnet Terminal Configuration

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/4inch_e-Paper_E/STM32-F103ZET6/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/DspLibTest_FVP/ARMCM23_config.txt

Configure settings for Telnet terminals, including command-line execution, mode, start behavior, port, quiet mode, and output files.

```APIDOC
## Telnet Terminal Configuration

### Description
Configure settings for Telnet terminals, including command-line execution, mode, start behavior, port, quiet mode, and output files.

### Parameters
#### Component: fvp_mps2.telnetterminal1
- **terminal_command** (string, init-time) - Optional - Commandline to launch a terminal application and connect to the opened TCP port. Keywords %port and %title will be replaced with the opened port number and component name respectively. An empty string (default behaviour) will launch xterm (Linux) or telnet.exe (Windows).

#### Component: fvp_mps2.telnetterminal2
- **mode** (string, init-time) - Optional - Terminal initialisation mode. Default: 'telnet'.
- **start_telnet** (bool, init-time) - Optional - Start telnet if nothing connected. Default: 1.
- **start_port** (int, init-time) - Optional - Telnet TCP Port Number. Default: 0x1388. Range: [0x0..0xFFFFFFFF].
- **quiet** (bool, init-time) - Optional - Avoid output on stdout/stderr. Default: 0.
- **terminal_command** (string, init-time) - Optional - Commandline to launch a terminal application and connect to the opened TCP port. Keywords %port and %title will be replaced with the opened port number and component name respectively. An empty string (default behaviour) will launch xterm (Linux) or telnet.exe (Windows).

```

--------------------------------

### GPIO and SPI Initialization

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/2.9inch_e-Paper_G/STM32-F103ZET6/MDK-ARM/epd-demo/epd-demo.htm

Information regarding the MX_GPIO_Init and MX_SPI1_Init functions, including their stack usage and call chains.

```APIDOC
## GPIO and SPI Initialization

### MX_GPIO_Init

*   **Details**: Thumb, 86 bytes, Stack size 32 bytes
*   **Source File**: gpio.o(.text)
*   **Stack Usage**: Max Depth = 72
*   **Call Chain**: MX_GPIO_Init ⇒ HAL_GPIO_Init
*   **Calls**: HAL_GPIO_WritePin, HAL_GPIO_Init
*   **Called By**: main

### MX_SPI1_Init

*   **Details**: Thumb, 62 bytes, Stack size 8 bytes
*   **Source File**: spi.o(.text)
*   **Stack Usage**: Max Depth = 88
*   **Call Chain**: MX_SPI1_Init ⇒ HAL_SPI_Init ⇒ HAL_SPI_MspInit ⇒ HAL_GPIO_Init
*   **Calls**: HAL_SPI_Init, Error_Handler
*   **Called By**: main
```

--------------------------------

### HAL_Init

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/7in5_e-Paper_H/STM32-F103ZET6/MDK-ARM/epd-demo/epd-demo.htm

Initializes the HAL library, including the tick source and NVIC priority grouping.

```APIDOC
## HAL_Init

### Description
Initializes the Flash interface, the NVIC, and the Systick interrupt. It is typically called at the beginning of the main function.

### Method
Internal Function Call

### Endpoint
HAL_Init
```

--------------------------------

### Initialize and Exit E-Paper Module

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/10.85inch_e-Paper/RaspberryPi/c/readme_EN.txt

These functions handle the initialization and exit processing for the e-paper module, including GPIO setup. DEV_Module_Exit() can put the module into a low-power state.

```c
void DEV_Module_Init(void);
void DEV_Module_Exit(void);
```

--------------------------------

### System PPU Configuration

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/2in15_e-Paper_B/STM32-F103ZET6/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/DspLibTest_FVP/ARMCM33_config.txt

Configure the System PPU component.

```APIDOC
## System PPU Configuration

### Description
Configure the System PPU component, specifically the use of the active signal.

### Parameters
#### Init-time Parameters
- **fvp_mps2.sys_ppu.use_active_signal** (bool) - Optional - Use device-active signal. Default is 0.
```

--------------------------------

### System PPU Configuration

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/2.9inch_e-Paper_G/STM32-F103ZET6/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/DspLibTest_FVP/ARMCM33_DSP_FP_config.txt

Configure the System PPU (Power, Performance, and Utility) settings, specifically the use of the active signal.

```APIDOC
## System PPU Configuration

### Description
Configure the System PPU (Power, Performance, and Utility) settings, specifically the use of the active signal.

### Parameters
#### Init-time Parameters
- **fvp_mps2.sys_ppu.use_active_signal** (bool) - Use device-active signal. Default: '0'
```

--------------------------------

### Module Initialization and Exit Functions

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/10in2_e-Paper_G/RaspberryPi_JetsonNano/c/readme_EN.txt

Functions for managing GPIO states and power consumption for the e-paper module.

```c
void DEV_Module_Init(void);
        void DEV_Module_Exit(void);
```

--------------------------------

### HAL System Initialization

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/2in13_e-Paper_G/STM32-F103ZET6/MDK-ARM/epd-demo/epd-demo.htm

Core system functions for initializing the HAL library and system tick.

```APIDOC
## HAL_Init

### Description
Initializes the Flash interface, the NVIC, and the Systick.

## HAL_InitTick

### Description
Initializes the system tick timer to generate a periodic interrupt.
```

--------------------------------

### CPU Configuration Parameters

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/3in97_e-Paper_G/STM32-F103ZET6/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/DspLibTest_FVP/ARMCM33_DSP_FP_config.txt

Parameters for configuring the CPU0 instance, including security extensions, memory protection units, and trace support.

```APIDOC
## CPU0 Configuration

### Description
Configures the processor core settings including FPU, DSP, MPU regions, and security extensions.

### Parameters
- **cpu0.FPU** (bool) - init-time - Set whether the model has VFP support
- **cpu0.DSP** (bool) - init-time - Set whether the model has the DSP extension
- **cpu0.MPU_S** (int) - init-time - Number of regions in the Secure MPU [0x0..0x10]
- **cpu0.MPU_NS** (int) - init-time - Number of regions in the Non-Secure MPU [0x0..0x10]
- **cpu0.SECEXT** (bool) - init-time - Whether the ARMv8-M Security Extensions are included
```

--------------------------------

### EPD_7IN5_V2 Initialization Functions

Source: https://github.com/waveshareteam/e-paper/blob/master/STM32/STM32-F103ZET6/MDK-ARM/epd-demo/epd-demo.htm

Provides different methods for initializing the EPD_7IN5_V2 display.

```APIDOC
## EPD_7IN5_V2 Initialization Functions

### Description
These functions initialize the EPD_7IN5_V2 display using various methods.

### Methods
- `EPD_7IN5_V2_Init_Part`
- `EPD_7IN5_V2_Init_Fast`
- `EPD_7IN5_V2_Init`

### Notes
These functions are crucial for preparing the display before sending any data or commands.
```

--------------------------------

### C GUI Paint Library - Drawing Primitives

Source: https://context7.com/waveshareteam/e-paper/llms.txt

Initializes the image buffer, sets drawing parameters like rotation and grayscale, and demonstrates drawing various graphics primitives including points, lines, rectangles, and circles. Also shows text and number rendering with different fonts, Chinese characters, time display, clearing specific regions, and setting mirroring and rotation.

```c
#include "GUI_Paint.h"
#include "fonts.h"

// Initialize image buffer
UBYTE *image_buffer;
UWORD width = 250, height = 122;

// Create new image with rotation
Paint_NewImage(image_buffer, width, height, ROTATE_90, WHITE);
Paint_SelectImage(image_buffer);
Paint_Clear(WHITE);

// Set grayscale mode (for displays that support it)
Paint_SetScale(4);  // 2 = B/W, 4 = 4-gray, 7 = 7-color

// Drawing points with different sizes
Paint_DrawPoint(10, 10, BLACK, DOT_PIXEL_1X1, DOT_STYLE_DFT);
Paint_DrawPoint(20, 10, BLACK, DOT_PIXEL_2X2, DOT_STYLE_DFT);
Paint_DrawPoint(30, 10, BLACK, DOT_PIXEL_3X3, DOT_STYLE_DFT);
Paint_DrawPoint(40, 10, BLACK, DOT_PIXEL_4X4, DOT_STYLE_DFT);

// Drawing lines - solid and dotted
Paint_DrawLine(10, 30, 100, 30, BLACK, DOT_PIXEL_1X1, LINE_STYLE_SOLID);
Paint_DrawLine(10, 40, 100, 40, BLACK, DOT_PIXEL_1X1, LINE_STYLE_DOTTED);
Paint_DrawLine(10, 50, 100, 80, BLACK, DOT_PIXEL_2X2, LINE_STYLE_SOLID);

// Rectangles - empty and filled
Paint_DrawRectangle(10, 90, 60, 140, BLACK, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
Paint_DrawRectangle(70, 90, 120, 140, BLACK, DOT_PIXEL_1X1, DRAW_FILL_FULL);

// Circles - empty and filled
Paint_DrawCircle(45, 180, 30, BLACK, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
Paint_DrawCircle(115, 180, 30, BLACK, DOT_PIXEL_1X1, DRAW_FILL_FULL);

// Text rendering with different fonts
Paint_DrawString_EN(150, 10, "Hello", &Font8, BLACK, WHITE);
Paint_DrawString_EN(150, 25, "Hello", &Font12, BLACK, WHITE);
Paint_DrawString_EN(150, 45, "Hello", &Font16, BLACK, WHITE);
Paint_DrawString_EN(150, 70, "Hello", &Font20, BLACK, WHITE);
Paint_DrawString_EN(150, 100, "Hello", &Font24, BLACK, WHITE);

// Numbers
Paint_DrawNum(150, 140, 123456, &Font16, BLACK, WHITE);
Paint_DrawNumDecimals(150, 160, 3.14159, &Font16, 2, BLACK, WHITE);

// Chinese text (GB1312 encoding)
Paint_DrawString_CN(10, 220, "Chinese", &Font12CN, BLACK, WHITE);
Paint_DrawString_CN(10, 240, "Chinese", &Font24CN, BLACK, WHITE);

// Time display
PAINT_TIME time = {2024, 1, 15, 14, 30, 45};
Paint_DrawTime(150, 190, &time, &Font20, BLACK, WHITE);

// Clear specific window region
Paint_ClearWindows(200, 10, 250, 50, WHITE);

// Mirror and rotate options
Paint_SetMirroring(MIRROR_HORIZONTAL);  // MIRROR_NONE, MIRROR_VERTICAL, MIRROR_ORIGIN
Paint_SetRotate(ROTATE_180);  // ROTATE_0, ROTATE_90, ROTATE_180, ROTATE_270

```

--------------------------------

### Run the E-Paper Program

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/10.85inch_e-Paper_G/RaspberryPi/c/readme_EN.txt

After successful compilation, an executable file named 'epd' is generated. Run the program using sudo.

```bash
sudo ./epd
```

--------------------------------

### HAL_Init

Source: https://github.com/waveshareteam/e-paper/blob/master/STM32/STM32-F103ZET6/MDK-ARM/epd-demo/epd-demo.htm

Initializes the Flash interface, the NVIC (Nested Vectored Interrupt Controller), and the Systick timer.

```APIDOC
## HAL_Init

### Description
Initializes the HAL library, including the Flash interface, NVIC, and Systick timer.

### Method
Function Call

### Parameters
None
```

--------------------------------

### Device Initialization and Exit

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/7in5_e-Paper_H/STM32-F103ZET6/MDK-ARM/epd-demo/epd-demo.htm

Functions for initializing and exiting device modules.

```APIDOC
## DEV_SPI_Init

### Description
Initializes the SPI peripheral.

### Method
N/A (Function Call)

### Endpoint
N/A

### Parameters
None

### Request Example
```c
DEV_SPI_Init();
```

### Response
None
```

```APIDOC
## DEV_Module_Init

### Description
Initializes the device module.

### Method
N/A (Function Call)

### Endpoint
N/A

### Parameters
None

### Request Example
```c
DEV_Module_Init();
```

### Response
None
```

```APIDOC
## DEV_Module_Exit

### Description
Exits the device module.

### Method
N/A (Function Call)

### Endpoint
N/A

### Parameters
None

### Request Example
```c
DEV_Module_Exit();
```

### Response
None
```

--------------------------------

### CPU0 Configuration Parameters

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/4in2_e-Paper_G/STM32-F103ZET6/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/DspLibTest_FVP/ARMCM33_DSP_FP_config.txt

Parameters for configuring the CPU0 instance, including FPU, DSP, MPU, and security extensions.

```APIDOC
## CPU0 Configuration

### Description
Configures hardware features and security settings for the CPU0 instance.

### Parameters
- **cpu0.FPU** (bool) - init-time - Set whether the model has VFP support
- **cpu0.DSP** (bool) - init-time - Set whether the model has the DSP extension
- **cpu0.semihosting-enable** (bool) - init-time - Enable semihosting SVC traps
- **cpu0.MPU_S** (int) - init-time - Number of regions in the Secure MPU [0x0..0x10]
- **cpu0.MPU_NS** (int) - init-time - Number of regions in the Non-Secure MPU [0x0..0x10]
- **cpu0.ITM** (bool) - init-time - Level of instrumentation trace supported
- **cpu0.IRQLVL** (int) - init-time - Number of bits of interrupt priority [0x3..0x8]
- **cpu0.BIGENDINIT** (bool) - init-time - Initialize processor to big endian mode
- **cpu0.INITSVTOR** (int) - init-time - Secure vector-table offset at reset [0x0..0xFFFFFF80]
- **cpu0.INITNSVTOR** (int) - init-time - Non-Secure vector-table offset at reset [0x0..0xFFFFFF80]
- **cpu0.SAU** (int) - init-time - Number of SAU regions [0x0..0x8]
- **cpu0.SAU_CTRL.ENABLE** (bool) - init-time - Enable SAU at reset
- **cpu0.SAU_CTRL.ALLNS** (bool) - init-time - At reset, the SAU treats entire memory space as NS when the SAU is disabled
- **cpu0.NUM_IDAU_REGION** (int) - init-time - Number of IDAU regions
- **cpu0.LOCK_SAU** (bool) - init-time - Lock down of SAU registers write
- **cpu0.LOCK_S_MPU** (bool) - init-time - Lock down of Secure MPU registers write
- **cpu0.LOCK_NS_MPU** (bool) - init-time - Lock down of Non-Secure MPU registers write
- **cpu0.CPIF** (bool) - init-time - Specifies whether the external coprocessor interface is included
- **cpu0.SECEXT** (bool) - init-time - Whether the ARMv8-M Security Extensions are included
```

--------------------------------

### CPU Configuration Parameters

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/3in97_e-Paper/STM32-F103ZET6/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/DspLibTest_FVP/ARMCM33_FP_config.txt

Parameters for configuring the CPU0 core, including FPU, DSP, MPU, and security extension settings.

```APIDOC
## CPU0 Configuration

### Parameters
- **cpu0.FPU** (bool) - init-time - Set whether the model has VFP support
- **cpu0.DSP** (bool) - init-time - Set whether the model has the DSP extension
- **cpu0.semihosting-enable** (bool) - init-time - Enable semihosting SVC traps
- **cpu0.MPU_S** (int) - init-time - Number of regions in the Secure MPU [0x0..0x10]
- **cpu0.MPU_NS** (int) - init-time - Number of regions in the Non-Secure MPU [0x0..0x10]
- **cpu0.ITM** (bool) - init-time - Level of instrumentation trace supported
- **cpu0.IRQLVL** (int) - init-time - Number of bits of interrupt priority [0x3..0x8]
- **cpu0.BIGENDINIT** (bool) - init-time - Initialize processor to big endian mode
- **cpu0.INITSVTOR** (int) - init-time - Secure vector-table offset at reset [0x0..0xFFFFFF80]
- **cpu0.INITNSVTOR** (int) - init-time - Non-Secure vector-table offset at reset [0x0..0xFFFFFF80]
- **cpu0.SAU** (int) - init-time - Number of SAU regions [0x0..0x8]
- **cpu0.SAU_CTRL.ENABLE** (bool) - init-time - Enable SAU at reset
- **cpu0.SAU_CTRL.ALLNS** (bool) - init-time - SAU treats entire memory space as NS when disabled
- **cpu0.NUM_IDAU_REGION** (int) - init-time - Number of IDAU regions
- **cpu0.LOCK_SAU** (bool) - init-time - Lock down of SAU registers write
- **cpu0.LOCK_S_MPU** (bool) - init-time - Lock down of Secure MPU registers write
- **cpu0.LOCK_NS_MPU** (bool) - init-time - Lock down of Non-Secure MPU registers write
- **cpu0.CPIF** (bool) - init-time - Specifies whether the external coprocessor interface is included
- **cpu0.SECEXT** (bool) - init-time - Whether the ARMv8-M Security Extensions are included
```

--------------------------------

### SPI MSP and De-Initialization

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/2.9inch_e-Paper_G/STM32-F103ZET6/MDK-ARM/epd-demo/epd-demo.htm

Details on HAL_SPI_MspInit and HAL_SPI_MspDeInit functions, including stack usage and dependencies.

```APIDOC
## SPI MSP and De-Initialization

### HAL_SPI_MspInit

*   **Details**: Thumb, 80 bytes, Stack size 24 bytes
*   **Source File**: spi.o(.text)
*   **Stack Usage**: Max Depth = 64
*   **Call Chain**: HAL_SPI_MspInit ⇒ HAL_GPIO_Init
*   **Calls**: HAL_GPIO_Init
*   **Called By**: DEV_SPI_Init, HAL_SPI_Init

### HAL_SPI_MspDeInit

*   **Details**: Thumb, 28 bytes, Stack size 0 bytes
*   **Source File**: spi.o(.text), UNUSED
*   **Calls**: HAL_GPIO_DeInit
*   **Called By**: HAL_SPI_DeInit, DEV_GPIO_Init
```

--------------------------------

### System Initialization Functions

Source: https://github.com/waveshareteam/e-paper/blob/master/E-paper_Separate_Program/5inch_e-Paper/STM32-F103ZET6/MDK-ARM/epd-demo/epd-demo.htm

Functions related to system initialization and clock updates.

```APIDOC
## SystemInit

### Description
Initializes the system clock and peripherals.

### Method
N/A (Function Call)

### Endpoint
N/A

### Parameters
None explicitly defined in the provided text.

### Request Example
N/A

### Response
N/A

## SystemCoreClockUpdate

### Description
Updates the system core clock frequency.

### Method
N/A (Function Call)

### Endpoint
N/A

### Parameters
None explicitly defined in the provided text.

### Request Example
N/A

### Response
N/A
```