#ifndef MINI212G2_H_
#define MINI212G2_H_

#include "ch32v30x.h"

/* Set to 1 to enable UART commands to configure sensor at boot.
 * Set to 0 if sensor is pre-configured via USB to auto-output CMOS/DVP.
 * NOTE: PA2/PA3 may conflict with Ethernet — keep 0 unless UART is wired. */
#define SENSOR_UART_ENABLE   0

/* Sensor UART: USART2  PA2=TX  PA3=RX */
#define SENSOR_UART          USART2
#define SENSOR_UART_BAUD     115200

/**
 * Initialize sensor. When SENSOR_UART_ENABLE=1, configures via UART.
 * When SENSOR_UART_ENABLE=0, assumes sensor is pre-configured via USB.
 * Call BEFORE DVP_Init(). Returns 0 on success.
 */
int Mini212G2_Init(void);

#if SENSOR_UART_ENABLE
/**
 * Send a raw protocol command and wait for ACK.
 * Returns 0 on ACK received, -1 on timeout/bad response.
 */
int Mini212G2_SendCmd(const uint8_t *cmd, uint8_t len);

/**
 * Query current digital video settings. Prints result to debug console.
 */
void Mini212G2_PrintDigitalVideoStatus(void);

/**
 * Trigger shutter compensation (NUC).
 */
int Mini212G2_ShutterCompensation(void);
#endif /* SENSOR_UART_ENABLE */

#endif