/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* STM32F4xx HAL library initialization:
- Configure the Flash prefetch, instruction and Data caches
- Configure the Systick to generate an interrupt each 1 msec
- Set NVIC Group Priority to 4
- Global MSP (MCU Support Package) initialization
*/
HAL_Init();
/* Configure the system clock to 180 MHz */
SystemClock_Config();
/*##-1- Disable SAI1_SDA signal ############################################*/
/* Note: In STM324X9I-EVAL RevB, PE6 pin is shared between data_7 of camera
and SAI1_SDA of codec WM8994, after power on, SAI1_SDA pin of codec WM8994
is in output state, thus preventing MCU from Receiving correct signal
from camera, so we need to configure SAI1_SDA pin of codec WM8994
in tri-state
*/
/* Initialize the Control interface of the Audio Codec */
BSP_AUDIO_OUT_Init(OUTPUT_DEVICE_SPEAKER, 0, 0);
/* ADCDAT1 is tri-stated */
AUDIO_IO_Write(AUDIO_I2C_ADDRESS, 0x200, 0);
AUDIO_IO_Write(AUDIO_I2C_ADDRESS, 0x300, 0x6010);
/*##-2- Initialize the LCD #################################################*/
BSP_LCD_Init();
/*##-3- Initialize the LCD Layers ##########################################*/
BSP_LCD_LayerDefaultInit(1, LCD_FRAME_BUFFER);
/* Enable the LCD */
BSP_LCD_DisplayOn();
/* Select the LCD Foreground layer */
BSP_LCD_SelectLayer(1);
/*##-4- Camera Initialization and start capture ############################*/
/* Initialize the Camera */
BSP_CAMERA_Init(RESOLUTION_R480x272);
/* Wait 1s before Camera snapshot */
HAL_Delay(1000);
/* Start the Camera Capture */
BSP_CAMERA_SnapshotStart((uint8_t *)CAMERA_FRAME_BUFFER);
/* Infinite loop */
while (1)
{
}
}
/**
* @brief Initialize the camera module.
* @param None
* @retval None
*/
void CAMERA_Init(void)
{
/* Disable AUDIO Clock, because of shared pins */
BSP_AUDIO_OUT_Init(OUTPUT_DEVICE_SPEAKER, 0, 0);
AUDIO_IO_Write(AUDIO_I2C_ADDRESS, 0x200, 0x0);
AUDIO_IO_Write(AUDIO_I2C_ADDRESS, 0x300, 0x6010);
/* Initialize the Camera */
CameraError = BSP_CAMERA_Init(RESOLUTION_R320x240);
if( CameraError != CAMERA_ERROR)
{
GUI_Delay(100);
/* Start the capture */
BSP_CAMERA_ContinuousStart((uint8_t *)CAMERA_FRAME_BUFFER);
CAMERA_Set_ContrastBrightness(CameraSettings.b.contrast, CameraSettings.b.brightness);
}
}
/**
* @brief Writes/Read a single data.
* @param Addr: I2C address
* @param Reg: Reg address
* @param Value: Data to be written
* @retval None
*/
static uint8_t CODEC_IO_Write(uint8_t Addr, uint16_t Reg, uint16_t Value)
{
uint32_t result = 0;
AUDIO_IO_Write(Addr, Reg, Value);
#ifdef VERIFY_WRITTENDATA
/* Verify that the data has been correctly written */
result = (AUDIO_IO_Read(Addr, Reg) == Value)? 0:1;
#endif /* VERIFY_WRITTENDATA */
return result;
}
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* STM32F4xx HAL library initialization:
- Configure the Flash prefetch, instruction and Data caches
- Configure the Systick to generate an interrupt each 1 msec
- Set NVIC Group Priority to 4
- Global MSP (MCU Support Package) initialization
*/
HAL_Init();
/* Configure the system clock to 168 MHz */
SystemClock_Config();
/* Configure LED1 and LED3 */
BSP_LED_Init(LED1);
BSP_LED_Init(LED3);
/*##-1- Init Host Library ##################################################*/
USBH_Init(&hUSB_Host, USBH_UserProcess, 0);
/* Add Supported Class */
USBH_RegisterClass(&hUSB_Host, USBH_MSC_CLASS);
/* Start Host Process */
USBH_Start(&hUSB_Host);
/*##-2- Disable SAI1_SDA signal ############################################*/
/* Note: In STM324x9I-EVAL RevB, PE6 pin is shared between data_7 of camera
and SAI1_SDA of codec WM8994, after power on, SAI1_SDA pin of codec WM8994
is in output state, thus preventing MCU from receiving correct signal
from camera, so we need to configure SAI1_SDA pin of codec WM8994
in tri-state */
/* Initialize the Control interface of the Audio Codec */
BSP_AUDIO_OUT_Init(OUTPUT_DEVICE_SPEAKER, 70, AUDIO_FREQUENCY_48K);
/* ADCDAT1 is tri-stated */
AUDIO_IO_Write(AUDIO_I2C_ADDRESS, 0x200, 0);
AUDIO_IO_Write(AUDIO_I2C_ADDRESS, 0x300, 0x6010);
/*##-3- Configure TAMPER Button ############################################*/
BSP_PB_Init(BUTTON_TAMPER, BUTTON_MODE_GPIO);
/*##-4- Link the USB Host disk I/O driver ##################################*/
FATFS_LinkDriver(&USBH_Driver, MSC_Path);
/*##-5- Initialize the LCD #################################################*/
BSP_LCD_Init();
/* Foreground Layer Initialization */
BSP_LCD_LayerDefaultInit(1, LCD_FRAME_BUFFER_LAYER1);
/* Set Foreground Layer */
BSP_LCD_SelectLayer(1);
/* Clear the LCD Foreground layer */
BSP_LCD_Clear(LCD_COLOR_WHITE);
BSP_LCD_SetLayerVisible(1, DISABLE);
/* Background Layer Initialization */
BSP_LCD_LayerDefaultInit(0, LCD_FRAME_BUFFER);
/* Enable the LCD */
BSP_LCD_DisplayOn();
/* Select the LCD Foreground layer */
BSP_LCD_SelectLayer(0);
BSP_LCD_Clear(LCD_COLOR_WHITE);
/*##-6- Camera Initialization and start capture ############################*/
/* Initialize the Camera */
BSP_CAMERA_Init(RESOLUTION_R480x272);
/* Start the Camera Capture */
BSP_CAMERA_ContinuousStart((uint8_t *)CAMERA_FRAME_BUFFER);
/*##-7- Run Application ####################################################*/
while (1)
{
/* USB Host Background task */
USBH_Process(&hUSB_Host);
switch(Appli_state)
{
case STORAGE_READY:
CAMERA_Capture();
break;
case STORAGE_IDLE:
break;
}
}
}
//{{{
static uint8_t CODEC_IO_Write (uint8_t Addr, uint16_t Reg, uint16_t Value) {
uint32_t result = 0;
AUDIO_IO_Write (Addr, Reg, Value);
return result;
}