static void prvSetupHardware( void )
{
GPIO_InitTypeDef GPIO_InitStruct;
/* Configure Flash prefetch and Instruction cache through ART accelerator. */
#if( ART_ACCLERATOR_ENABLE != 0 )
{
__HAL_FLASH_ART_ENABLE();
}
#endif /* ART_ACCLERATOR_ENABLE */
/* Set Interrupt Group Priority */
HAL_NVIC_SetPriorityGrouping( NVIC_PRIORITYGROUP_4 );
/* Init the low level hardware. */
HAL_MspInit();
/* Configure the System clock to have a frequency of 200 MHz */
prvSystemClockConfig();
/* Enable GPIOB Clock (to be able to program the configuration
registers) and configure for LED output. */
__GPIOG_CLK_ENABLE();
__HAL_RCC_GPIOF_CLK_ENABLE();
GPIO_InitStruct.Pin = GPIO_PIN_10;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
HAL_GPIO_Init( GPIOF, &GPIO_InitStruct );
/* MCO2 : Pin PC9 */
HAL_RCC_MCOConfig( RCC_MCO2, RCC_MCO2SOURCE_SYSCLK, RCC_MCODIV_1 );
}
void platform_early_init(void)
{
// Do general system init
SystemInit();
SystemClock_Config();
// Enable the flash ART controller
__HAL_FLASH_ART_ENABLE();
__HAL_FLASH_PREFETCH_BUFFER_ENABLE();
/* read the unique id */
stm32_unique_id[0] = *REG32(0x1ff0f420);
stm32_unique_id[1] = *REG32(0x1ff0f424);
stm32_unique_id[2] = *REG32(0x1ff0f428);
/* seed the random number generator based on this */
srand(stm32_unique_id[0] ^ stm32_unique_id[1] ^ stm32_unique_id[2]);
// Start the systick timer
uint32_t sysclk = HAL_RCC_GetSysClockFreq();
arm_cm_systick_init(sysclk);
stm32_timer_early_init();
stm32_gpio_early_init();
stm32_flash_early_init();
stm32_rng_init();
/* clear the reboot reason */
RCC->CSR |= (1<<24);
// ITM_SendChar('1');
}
/**
* @brief This function is used to initialize the HAL Library; it must be the first
* instruction to be executed in the main program (before to call any other
* HAL function), it performs the following:
* Configure the Flash prefetch, and instruction cache through ART accelerator.
* Configures the SysTick to generate an interrupt each 1 millisecond,
* which is clocked by the HSI (at this stage, the clock is not yet
* configured and thus the system is running from the internal HSI at 16 MHz).
* Set NVIC Group Priority to 4.
* Calls the HAL_MspInit() callback function defined in user file
* "stm32f7xx_hal_msp.c" to do the global low level hardware initialization
*
* @note SysTick is used as time base for the HAL_Delay() function, the application
* need to ensure that the SysTick time base is always set to 1 millisecond
* to have correct HAL operation.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_Init(void)
{
/* Configure Flash prefetch and Instruction cache through ART accelerator */
#if (ART_ACCLERATOR_ENABLE != 0)
__HAL_FLASH_ART_ENABLE();
#endif /* ART_ACCLERATOR_ENABLE */
/* Set Interrupt Group Priority */
HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);
/* Use systick as time base source and configure 1ms tick (default clock after Reset is HSI) */
HAL_InitTick(TICK_INT_PRIORITY);
/* Init the low level hardware */
HAL_MspInit();
/* Return function status */
return HAL_OK;
}
// BSP functions =============================================================
void BSP::init(void) {
// NOTE: SystemInit() has been already called from the startup code
// but SystemCoreClock needs to be updated
SystemCoreClockUpdate();
// NOTE: The VFP (hardware Floating Point) unit is configured by FreeRTOS */
SCB_EnableICache(); // Enable I-Cache
SCB_EnableDCache(); // Enable D-Cache
// Configure Flash prefetch and Instr. cache through ART accelerator
#if (ART_ACCLERATOR_ENABLE != 0)
__HAL_FLASH_ART_ENABLE();
#endif // ART_ACCLERATOR_ENABLE
/* Configure the LEDs */
BSP_LED_Init(LED1);
BSP_LED_Init(LED2);
BSP_LED_Init(LED3);
// Configure the User Button in GPIO Mode
BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_GPIO);
//...
BSP::randomSeed(1234U);
// initialize the QS software tracing...
if (!QS_INIT((void *)0)) {
Q_ERROR();
}
QS_OBJ_DICTIONARY(&l_TickHook);
QS_OBJ_DICTIONARY(&l_EXTI0_IRQHandler);
QS_USR_DICTIONARY(PHILO_STAT);
QS_USR_DICTIONARY(PAUSED_STAT);
QS_USR_DICTIONARY(COMMAND_STAT);
}
// BSP functions =============================================================
void BSP::init(void) {
// NOTE: SystemInit() has been already called from the startup code
// but SystemCoreClock needs to be updated
//
SystemCoreClockUpdate();
SCB_EnableICache(); // Enable I-Cache
SCB_EnableDCache(); // Enable D-Cache
// Configure Flash prefetch and Instr. cache through ART accelerator
#if (ART_ACCLERATOR_ENABLE != 0)
__HAL_FLASH_ART_ENABLE();
#endif // ART_ACCLERATOR_ENABLE
// configure the FPU usage by choosing one of the options...
#if 1
// OPTION 1:
// Use the automatic FPU state preservation and the FPU lazy stacking.
//
// NOTE:
// Use the following setting when FPU is used in more than one task or
// in any ISRs. This setting is the safest and recommended, but requires
// extra stack space and CPU cycles.
//
FPU->FPCCR |= (1U << FPU_FPCCR_ASPEN_Pos) | (1U << FPU_FPCCR_LSPEN_Pos);
#else
// OPTION 2:
// Do NOT to use the automatic FPU state preservation and
// do NOT to use the FPU lazy stacking.
//
// NOTE:
// Use the following setting when FPU is used in ONE task only and not
// in any ISR. This setting is very efficient, but if more than one task
// (or ISR) start using the FPU, this can lead to corruption of the
// FPU registers. This option should be used with CAUTION.
//
FPU->FPCCR &= ~((1U << FPU_FPCCR_ASPEN_Pos) | (1U << FPU_FPCCR_LSPEN_Pos));
#endif
/* Configure the LEDs */
BSP_LED_Init(LED1);
BSP_LED_Init(LED2);
BSP_LED_Init(LED3);
// Configure the User Button in GPIO Mode
BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_GPIO);
//...
BSP::randomSeed(1234U);
// initialize the QS software tracing...
if (!QS_INIT((void *)0)) {
Q_ERROR();
}
QS_OBJ_DICTIONARY(&l_SysTick_Handler);
QS_OBJ_DICTIONARY(&l_EXTI0_IRQHandler);
QS_USR_DICTIONARY(PHILO_STAT);
QS_USR_DICTIONARY(PAUSED_STAT);
QS_USR_DICTIONARY(COMMAND_STAT);
QS_USR_DICTIONARY(ON_CONTEXT_SW);
}
