/**
* @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 */
SystemClock_Config();
/*##-1- Initialize LEDs mounted on EVAL board ##############################*/
BSP_LED_Init(LED1);
BSP_LED_Init(LED2);
/*##-2- Configure EXTI Line0 (connected to PA0 pin) in interrupt mode ######*/
EXTILine0_Config();
/*##-3- Configure EXTI Line15 (connected to PG15 pin) in interrupt mode ####*/
EXTILine15_10_Config();
/* Infinite loop */
while (1)
{
}
}
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* This sample code shows how to use STM32F3xx CEC HAL API to transmit and
* receive data. The device is set in waiting to receive mode and sends
* messages when the evaluation board buttons are pushed by the user */
/* STM32F3xx HAL library initialization:
- Configure the Flash prefetch
- Systick timer is configured by default as source of time base, but user
can eventually implement his proper time base source (a general purpose
timer for example or other time source), keeping in mind that Time base
duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
handled in milliseconds basis.
- Set NVIC Group Priority to 4
- Low Level Initialization
*/
HAL_Init();
/* Configure the system clock to 72 MHz */
SystemClock_Config();
/* LED and button-triggered interruptions initialization */
/* -1- Initialize LEDs mounted on EVAL board */
BSP_LED_Init(LED1);
BSP_LED_Init(LED2);
BSP_LED_Init(LED3);
BSP_LED_Init(LED4);
/* -2- Configure EXTI Line0 (connected to PA0 pin) in Interrupt mode */
/* Do basically the same as BSP_PB_Init(BUTTON_TAMPER, BUTTON_MODE_EXTI); */
EXTILine0_Config();
/* -3- Configure EXTI Line2 (connected to PA2 pin) in interrupt mode */
/* Do basically the same as BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_EXTI); */
EXTILine2_TSC_Config();
/* -4- Configure EXTI Line9-5 (connected to PE6 pin) in interrupt mode */
/* Do basically the same as BSP_PB_Init(BUTTON_SEL, BUTTON_MODE_EXTI); */
EXTILine9_5_Config();
/* -5- Configure EXTI Line15-10 (connected to PF10 pin) in interrupt mode */
/* Do basically the same as BSP_PB_Init(JOY_UP, BUTTON_MODE_EXTI); */
EXTILine15_10_Config();
/* CEC device initialization */
#if defined (DEVICE_1)
DestinationAddress = DEVICE_ADDRESS_2; /* follower address */
#elif defined (DEVICE_2)
DestinationAddress = DEVICE_ADDRESS_1; /* follower address */
#endif
/* -6- CEC configuration (transfer will take place in Interrupt mode) */
hcec.Instance = CEC;
/* Deinitialize CEC to reinitialize from scratch */
HAL_CEC_DeInit(&hcec);
/* IP configuration */
CEC_Config(&hcec);
/* -7- CEC transfer general variables initialization */
ReceivedFrame = 0;
StartSending = 0;
NbOfReceivedBytes = 0;
CEC_FlushRxBuffer();
/* Test start */
/* Enter infinite reception loop: the CEC device is set in
* waiting to receive mode.
* The CEC "background" state is HAL_CEC_STATE_STANDBY_RX.
* Upon any message reception or transmission, the CEC
* comes back to that state.
* It is up to the user to define exit conditions in modifying
* accordingly the RX, TX or Error callback functions. */
HAL_CEC_Receive_IT(&hcec, (uint8_t *)&Tab_Rx);
while (HAL_CEC_GetState(&hcec) != HAL_CEC_STATE_READY)
{
/* if no reception has occurred and no error has been detected,
* transmit a message if the user has pushed a button */
if( (StartSending == 1) && (ReceivedFrame == 0))
{
HAL_CEC_Transmit_IT(&hcec, DestinationAddress, (uint8_t *)&Tab_Tx, TxSize);
/* loop until TX ends or TX error reported */
while (HAL_CEC_GetState(&hcec) != HAL_CEC_STATE_STANDBY_RX);
StartSending = 0;
}
/* if a frame has been received */
if (ReceivedFrame == 1)
{
if (Tab_Rx[1] == 0x44) /* Test on the opcode value */
{
/* Receive command is equal to Volume Up(Button Up) */
if (Tab_Rx[2] == 0x41) /* Test on the operand value */
{
BSP_LED_On(LED1);
BSP_LED_On(LED2);
BSP_LED_On(LED3);
BSP_LED_On(LED4);
}
else if (Tab_Rx[2] == 0x42) /* Receive command is equal to Volume Down(Button Down) */
{
BSP_LED_Off(LED1);
BSP_LED_Off(LED2);
BSP_LED_Off(LED3);
BSP_LED_Off(LED4);
}
}
else if (Tab_Rx[1] == 0x46) /* Test on the opcode value */
{
BSP_LED_On(LED1);
BSP_LED_On(LED2);
BSP_LED_Off(LED3);
BSP_LED_Off(LED4);
}
else if (Tab_Rx[1] == 0x9F) /* Test on the opcode value */
{
BSP_LED_Off(LED1);
BSP_LED_Off(LED2);
BSP_LED_On(LED3);
BSP_LED_On(LED4);
}
ReceivedFrame = 0;
}
else if (ReceivedFrame == 2) /* means CEC error detected */
{
/* Turn on LED3 */
BSP_LED_On(LED3);
ReceivedFrame = 0;
}
} /* while (HAL_CEC_GetState(&hcec) != HAL_CEC_STATE_READY) */
return 0;
}
