> For the complete documentation index, see [llms.txt](https://nxp.gitbook.io/nxp-cup/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://nxp.gitbook.io/nxp-cup/2024-fall-2025-nxp-cup-bare-metal-drivers/drivers-description-and-usage/linear-camera.md).

# Linear camera

The Linear camera driver is suitable for 128x1 cameras. It sends the clock and shutter signals to the camera and stores the analog values in an array.

#### Initialization

```c
void LinearCameraInit(Pwm_ChannelType ClkPwmChannel, Gpt_ChannelType ShutterGptChannel, Adc_GroupType InputAdcGroup, Dio_ChannelType ShutterDioChannel);
```

Parameters:

·       ClkPwmChannel: The Pwm channel configured for the camera in the Peripherals tool.

·       ShutterPwmChannel: The Pwm channel configured for the camera in the Peripherals tool.

·       InputAdcGroup: The Adc Group configured for the camera in the Peripherals tool.

#### Getting a frame

```c
void LinearCameraGetFrame(LinearCameraFrame *Frame);
```

Parameter:

·       Frame: The address of the variable where to store the analog values. The buffer must be declared by the user.

#### Relevant structures

```c
typedef struct{
    Pwm_ChannelType ClkPwmChannel;
    Gpt_ChannelType ShutterGptChannel;
    Adc_GroupType InputAdcGroup;
    Dio_ChannelType ShutterDioChannel;
    uint16 CurrentIndex;
    LinearCameraFrame *BufferReference;
}LinearCamera;
```

```c
typedef struct{
	uint8 Values[128];
}LinearCameraFrame;
```