/**
* @brief Configures all needed resources (I2C, DCMI and DMA) to interface with
* the OV9655 camera module
* @param None
* @retval 0x00 Camera module configured correctly
* 0xFF Camera module configuration failed
*/
uint8_t DCMI_OV9655Config(void)
{
uint8_t readvalue;
char str[8];
uint8_t opmask=MODE|LEN|OEN_TRI_SEL_MASK;
/* I2C1 will be used for camera configuration */
I2C1_Config();
// - Read ID and check
readvalue=DCMI_SingleRandomRead(OV9655_DEVICE_READ_ADDRESS,ID);
sprintf(str,"ID=%x,",readvalue);
USART_puts(USART2,str);
//- Write opform register
//Mode=0, Len=0, rest default
tw9910_mask_set(OV9655_DEVICE_WRITE_ADDRESS, OPFORM, opmask, 0x00|OEN_TRI_SEL_ALL_ON);
//- set resolution(vscale,hscale or vactive,hactive and vdelay hdelay)
/* OV9655 Camera size setup */
DCMI_OV9655_QVGASizeSetup();
//- write the hsync vsync pin configuration(output control 0x05)
DCMI_SingleRandomWrite(OV9655_DEVICE_WRITE_ADDRESS, OUTCTR1, 0x02);//**0x11,0x01,0x10?
//- write clock
DCMI_SingleRandomWrite(OV9655_DEVICE_WRITE_ADDRESS, OUTCTR2, 0x00);
//- write vbi control register for invalid bit settings and Hactive enable
tw9910_mask_set(OV9655_DEVICE_WRITE_ADDRESS,VBICNTL,0x18, 0x18);//Enable HA_EN**0,1? and cntl656
//- read and print status registers(Nicely! - normal status, detected format etc.)
readvalue=DCMI_SingleRandomRead(OV9655_DEVICE_READ_ADDRESS,STATUS1);
sprintf(str,"St1=%x,",readvalue);
USART_puts(USART2,str);
while((DCMI_SingleRandomRead(OV9655_DEVICE_READ_ADDRESS,STATUS1)&~0x10)!=0x68){
Delay(10);
}
readvalue=DCMI_SingleRandomRead(OV9655_DEVICE_READ_ADDRESS,STATUS1);
sprintf(str,"St1=%x,",readvalue);
// USART_puts(USART2,str);
readvalue=DCMI_SingleRandomRead(OV9655_DEVICE_READ_ADDRESS,STATUS2);
sprintf(str,"St2=%x,",readvalue);
USART_puts(USART2,str);
readvalue=DCMI_SingleRandomRead(OV9655_DEVICE_READ_ADDRESS,SDT);
sprintf(str,"Sdt=%x\n",readvalue);
USART_puts(USART2,str);
/* Configure the DCMI to interface with the OV9655 camera module */
DCMI_Config();
return (0x00);
}
/**
* @brief Configures all needed resources (I2C, DCMI and DMA) to interface with
* the OV9655 camera module
* @param None
* @retval 0x00 Camera module configured correctly
* 0xFF Camera module configuration failed
*/
uint8_t DCMI_OV9655Config(void)
{
/* I2C1 will be used for OV9655 camera configuration */
I2C1_Config();
/* Reset and check the presence of the OV9655 camera module */
if (DCMI_SingleRandomWrite(OV9655_DEVICE_WRITE_ADDRESS,0x12, 0x80))
{
return (0xFF);
}
/* OV9655 Camera size setup */
DCMI_OV9655_QVGASizeSetup();
/* Set the RGB565 mode */
DCMI_SingleRandomWrite(OV9655_DEVICE_WRITE_ADDRESS, OV9655_COM7, 0x63);
DCMI_SingleRandomWrite(OV9655_DEVICE_WRITE_ADDRESS, OV9655_COM15, 0x10);
/* Invert the HRef signal*/
DCMI_SingleRandomWrite(OV9655_DEVICE_WRITE_ADDRESS, OV9655_COM10, 0x08);
/* Configure the DCMI to interface with the OV9655 camera module */
DCMI_Config();
return (0x00);
}
