/**
* @name VSYNC_GPIO_Configuration
* @brief 配置PB7作为OV7670 VSYNC场引脚
* @param None
* @return None
* @notice
*/
static void VSYNC_GPIO_Configuration(void)
{
CKCU_PeripClockConfig_TypeDef CKCUClock = {{0}};
/* Enable PB */
CKCUClock.Bit.PB = 1;
CKCU_PeripClockConfig(CKCUClock, ENABLE);
/* 配置PB7作为VSYNC引脚 */
GPIO_DirectionConfig(HT_GPIOB, GPIO_PIN_7, GPIO_DIR_IN);
/* Enable GPIO Input Function */
GPIO_InputConfig(HT_GPIOB, GPIO_PIN_7, ENABLE);
/* 由于要配置为下降沿触发的中断模式，因此上拉该引脚 */
GPIO_PullResistorConfig(HT_GPIOB, GPIO_PIN_7, GPIO_PR_UP);
}
/**
* @brief 初始化SPI0
* @param
* @retval None
*/
void SPI0_Init(void)
{
CKCU_PeripClockConfig_TypeDef CKCUClock = {{0}};
/* Enable PA & SPI0 & AFIO */
CKCUClock.Bit.PA = 1;
CKCUClock.Bit.SPI0 = 1;
CKCUClock.Bit.AFIO = 1;
CKCU_PeripClockConfig(CKCUClock, ENABLE);
/* SPI0_SEL idle state is HIGH */
GPIO_PullResistorConfig(HT_GPIOA, GPIO_PIN_8, GPIO_PR_UP);
/* Configure related IO to SPI0 */
AFIO_GPAConfig(AFIO_PIN_4 | AFIO_PIN_5 | AFIO_PIN_6 | AFIO_PIN_7, AFIO_MODE_5);
/* SPI0 configuration */
SPI_InitStructure.SPI_Mode = SPI_MASTER;
SPI_InitStructure.SPI_FIFO = SPI_FIFO_DISABLE;
SPI_InitStructure.SPI_DataLength = SPI_DATALENGTH_8;
SPI_InitStructure.SPI_SELMode = SPI_SEL_SOFTWARE;
SPI_InitStructure.SPI_SELPolarity = SPI_SELPOLARITY_LOW;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_LOW;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_FIRST;
SPI_InitStructure.SPI_FirstBit = SPI_FIRSTBIT_MSB;
SPI_InitStructure.SPI_RxFIFOTriggerLevel = 0;
SPI_InitStructure.SPI_TxFIFOTriggerLevel = 0;
SPI_InitStructure.SPI_ClockPrescaler = 4;
SPI_Init(HT_SPI0, &SPI_InitStructure);
/* Set SEL as output mode for slave select */
SPI_SELOutputCmd(HT_SPI0, ENABLE);
/* Enable SPI0 */
SPI_Cmd(HT_SPI0, ENABLE);
}
