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/**
******************************************************************************
* @file BSP/Src/main.c
* @author MCD Application Team
* @brief This example code shows how to use the STM32446E BSP Drivers
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stlogo.h"
/** @addtogroup STM32F4xx_HAL_Examples
* @{
*/
/** @addtogroup BSP
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
uint8_t DemoIndex = 0;
uint8_t NbLoop = 1;
volatile uint8_t MfxToggleLed = 0;
/* Global extern variables ---------------------------------------------------*/
volatile uint8_t MfxExtiReceived = 0;
#ifndef USE_FULL_ASSERT
uint16_t ErrorCounter = 0;
#endif
/* Private function prototypes -----------------------------------------------*/
static void SystemClock_Config(void);
static void Display_DemoDescription(void);
BSP_DemoTypedef BSP_examples[]=
{
{Joystick_polling_demo, "JOYSTICK", 0},
{Touchscreen_polling_demo, "TOUCHSCREEN", 0},
{LCD_demo, "LCD", 0},
{SD_demo, "mSD", 0},
{Log_demo, "LCD LOG", 0},
{SDRAM_demo, "SDRAM", 0},
{EEPROM_demo, "EEPROM", 0},
{QSPI_demo, "QSPI", 0},
{AudioPlay_demo, "AUDIO PLAY", 0},
{Camera_demo, "CAMERA", 0},
};
/* Private functions ---------------------------------------------------------*/
/**
* @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();
BSP_IO_Init();
/* Set camera sensor in Power Down mode */
BSP_CAMERA_PwrDown();
BSP_LED_Init(LED1);
BSP_LED_Init(LED2);
BSP_LED_Init(LED3);
BSP_LED_Init(LED4);
BSP_LED_Toggle(LED4);
/* Configure the User Button in GPIO Mode */
BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_GPIO);
/* temporary for debugging MFX */
/* BSP_MFX_reg_access_for_debug(); */
/*##-1- Initialize the LCD #################################################*/
/* Initialize the LCD */
BSP_LCD_Init();
Display_DemoDescription();
/* Wait For User inputs */
while (1)
{
if ( MfxToggleLed == 1)
{
BSP_LED_Toggle(LED4);
MfxToggleLed = 0;
}
if(BSP_PB_GetState(BUTTON_KEY) != RESET)
{
HAL_Delay(10);
while (BSP_PB_GetState(BUTTON_KEY) != RESET);
BSP_examples[DemoIndex++].DemoFunc();
if(DemoIndex >= COUNT_OF_EXAMPLE(BSP_examples))
{
/* Increment number of loops which be used by EEPROM example */
NbLoop++;
DemoIndex = 0;
}
Display_DemoDescription();
}
}
}
/**
* @brief This function is executed in case of error occurrence.
* @param None
* @retval None
*/
static void Error_Handler(void)
{
while(1)
{
/* Insert a delay */
HAL_Delay(50);
}
}
/**
* @brief System Clock Configuration
* The system Clock is configured as follow :
* System Clock source = PLL (HSE)
* SYSCLK(Hz) = 180000000
* HCLK(Hz) = 180000000
* AHB Prescaler = 1
* APB1 Prescaler = 4
* APB2 Prescaler = 2
* HSE Frequency(Hz) = 8000000
* PLL_M = 8
* PLL_N = 360
* PLL_P = 2
* PLL_Q = 7
* PLL_R = 2
* VDD(V) = 3.3
* Main regulator output voltage = Scale1 mode
* Flash Latency(WS) = 5
* @param None
* @retval None
*/
static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
HAL_StatusTypeDef ret = HAL_OK;
/* Enable Power Control clock */
__HAL_RCC_PWR_CLK_ENABLE();
/* The voltage scaling allows optimizing the power consumption when the device is
clocked below the maximum system frequency, to update the voltage scaling value
regarding system frequency refer to product datasheet. */
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/* Enable HSE Oscillator and activate PLL with HSE as source */
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 8;
RCC_OscInitStruct.PLL.PLLN = 360;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
RCC_OscInitStruct.PLL.PLLR = 2;
ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
if(ret != HAL_OK)
{
Error_Handler();
}
/* activate the OverDrive to reach the 180 Mhz Frequency */
ret = HAL_PWREx_EnableOverDrive();
if(ret != HAL_OK)
{
Error_Handler();
}
/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
clocks dividers */
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
if(ret != HAL_OK)
{
Error_Handler();
}
}
/**
* @brief Display main demo messages.
* @param None
* @retval None
*/
static void Display_DemoDescription(void)
{
uint8_t desc[58];
BSP_LCD_SetFont(&LCD_DEFAULT_FONT);
/* Clear the LCD */
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
BSP_LCD_Clear(LCD_COLOR_WHITE);
/* Set the LCD Text Color */
BSP_LCD_SetTextColor(LCD_COLOR_DARKBLUE);
/* Display LCD messages */
BSP_LCD_DisplayStringAt(0, 10, (uint8_t *)"STM32F446E BSP", CENTER_MODE);
BSP_LCD_DisplayStringAt(0, 35, (uint8_t *)"Drivers examples", CENTER_MODE);
/* Draw Bitmap */
BSP_LCD_DrawBitmap((BSP_LCD_GetXSize() - 80)/2, 65, (uint8_t *)stlogo);
BSP_LCD_SetFont(&Font12);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize()- 20, (uint8_t *)"Copyright (c) STMicroelectronics 2016", CENTER_MODE);
BSP_LCD_SetFont(&Font16);
BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
BSP_LCD_FillRect(0, BSP_LCD_GetYSize()/2 + 15, BSP_LCD_GetXSize(), 60);
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
BSP_LCD_SetBackColor(LCD_COLOR_BLUE);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize()/2 + 30, (uint8_t *)"Press User Button to start :", CENTER_MODE);
sprintf((char *)desc,"%s example", BSP_examples[DemoIndex].DemoName);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize()/2 + 45, (uint8_t *)desc, CENTER_MODE);
}
/**
* @brief Check for user input.
* @param None
* @retval Input state (1 : active / 0 : Inactive)
*/
uint8_t CheckForUserInput(void)
{
if(BSP_PB_GetState(BUTTON_KEY) != RESET)
{
HAL_Delay(10);
while (BSP_PB_GetState(BUTTON_KEY) != RESET);
return 1 ;
}
return 0;
}
/**
* @brief Toggle Leds.
* @param None
* @retval None
*/
void Toggle_Leds(void)
{
static uint32_t ticks = 0;
if(ticks++ > 200)
{
/* Led2 and Led4 are on MFX (IO expander). Communication with Mfx is done by I2C.
Often the sw requires ISRs (irq service routines) to be quick while communication
with I2C can be considered relatively long (hundreds of usec depending on I2C clk).
In order to avoid blocking I2C communication on interrupt service routines
here we propose an example of implementation which is a mix between pooling and exit:
On ISR a flag is set (MfxToggleLed), the main loop polls on the flag;
Mcu communicates with Mfx only when the flag has been set. This is just an example:
the users should choose they strategy depending on their application needs.*/
/* NOTE: Led1 and Led3 can toggle on SysTick without performance drawback
because they are on GPIO pins */
MfxToggleLed = 1;
ticks = 0;
}
}
/**
* @brief EXTI line detection callbacks.
* @param GPIO_Pin: Specifies the pins connected EXTI line
* @retval None
*/
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
static uint32_t debounce_time = 0;
if(GPIO_Pin == KEY_BUTTON_PIN)
{
/* Prevent debounce effect for user key */
if((HAL_GetTick() - debounce_time) > 50)
{
debounce_time = HAL_GetTick();
}
/*function to be completed by else {} */
}
if(GPIO_Pin == MFX_IRQOUT_PIN)
{
/* The different functionalities of MFX (TS, Joystick, SD detection, etc, ) can be
configured in exti mode to generate an IRQ on given events.
The MFX IRQ_OUT pin is unique and common to all functionalities, so if several
functionalities are configured in exit mode, the MCU has to enquire MFX about the IRQ source
(see function BSP_IO_ITGetStatus). Communication with Mfx is done by I2C.
Often the sw requires ISRs (interrupt service routines) to be quick while communication
with I2C can be considered relatively long (depending on SW requirements).
Considering that the features for human interaction like TS, Joystick, SD detection
don�t need immediate reaction, it is suggested to use polling mode instead of EXTI mode,
in order to avoid blocking I2C communication on interrupt service routines */
/* Here an example of implementation is proposed which is a mix between pooling and exit mode:
On ISR a flag is set (MfxIrqReceived), the main loop polls on the flag rather then polling the Mfx;
Mcu communicates with Mfx only when the flag has been set by ISR. This is just an example:
the users should choose they strategy depending on their application needs.*/
MfxExtiReceived = 1;
}
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif /* USE_FULL_ASSERT */
/**
* @}
*/
/**
* @}
*/