/**
******************************************************************************
* @file main.c
* @author MCU Application Team
* @brief Main program body
******************************************************************************
* @attention
*
* © Copyright (c) 2023 Puya Semiconductor Co.
* All rights reserved.
*
* This software component is licensed by Puya under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
* @attention
*
* © Copyright (c) 2016 STMicroelectronics.
* All rights reserved.
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "py32f403xx_ll_Start_Kit.h"
/* Private define ------------------------------------------------------------*/
#define FLASH_USER_START_ADDR 0x08010000
/* Private variables ---------------------------------------------------------*/
const uint32_t DATA[128] =
{
0x01010101, 0x23456789, 0x3456789A, 0x456789AB, 0x56789ABC, 0x6789ABCD, 0x789ABCDE, 0x89ABCDEF,
0x9ABCDEF0, 0xABCDEF01, 0xBCDEF012, 0xCDEF0123, 0xDEF01234, 0xEF012345, 0xF0123456, 0x01234567,
0x01010101, 0x23456789, 0x3456789A, 0x456789AB, 0x56789ABC, 0x6789ABCD, 0x789ABCDE, 0x89ABCDEF,
0x9ABCDEF0, 0xABCDEF01, 0xBCDEF012, 0xCDEF0123, 0xDEF01234, 0xEF012345, 0xF0123456, 0x01234567,
0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA,
0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA,
0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA,
0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA,
0x01010101, 0x23456789, 0x3456789A, 0x456789AB, 0x56789ABC, 0x6789ABCD, 0x789ABCDE, 0x89ABCDEF,
0x9ABCDEF0, 0xABCDEF01, 0xBCDEF012, 0xCDEF0123, 0xDEF01234, 0xEF012345, 0xF0123456, 0x01234567,
0x01010101, 0x23456789, 0x3456789A, 0x456789AB, 0x56789ABC, 0x6789ABCD, 0x789ABCDE, 0x89ABCDEF,
0x9ABCDEF0, 0xABCDEF01, 0xBCDEF012, 0xCDEF0123, 0xDEF01234, 0xEF012345, 0xF0123456, 0x01234567,
0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA,
0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA,
0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA,
0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA,
};
/* Private user code ---------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
static void APP_SystemClockConfig(void);
static void APP_FlashErase(void);
static void APP_FlashProgram(void);
static void APP_FlashBlank(void);
static void APP_FlashVerify(void);
/**
* @brief Main program.
* @param None
* @retval int
*/
int main(void)
{
/* Enable SYSCFG and PWR clock */
LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_SYSCFG);
LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_PWR);
/* 3 bits for pre-emption priority, 0 bits for subpriority */
NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_3);
/* Configure system clock */
APP_SystemClockConfig();
BSP_USART_Config();
/* Initialize LED */
BSP_LED_Init(LED_GREEN);
/* Initialize button */
BSP_PB_Init(BUTTON_USER, BUTTON_MODE_GPIO);
/* Wait for the button to be pressed, to prevent erasing FLASH on every power-up */
while (BSP_PB_GetState(BUTTON_USER))
{
}
/* Unlock FLASH */
LL_FLASH_Unlock(FLASH);
/* Erase FLASH */
APP_FlashErase();
/* Check if FLASH is blank */
APP_FlashBlank();
/* Program FLASH */
APP_FlashProgram();
/* Lock FLASH */
LL_FLASH_Lock(FLASH);
/* Verify FLASH */
APP_FlashVerify();
BSP_LED_On(LED_GREEN);
while (1)
{
}
}
/**
* @brief FLASH erase function
* @param None
* @retval None
*/
static void APP_FlashErase(void)
{
/* Wait Busy=0 */
while(LL_FLASH_IsActiveFlag_BUSY(FLASH)==1);
/* Enable EOP */
LL_FLASH_EnableIT_EOP(FLASH);
/* Enable Block Erase */
LL_FLASH_EnableBlockErase(FLASH);
/* Set Erase Address */
LL_FLASH_SetEraseAddress(FLASH,FLASH_USER_START_ADDR);
/* Wait Busy=0 */
while(LL_FLASH_IsActiveFlag_BUSY(FLASH)==1);
/* Wait EOP=1 */
while(LL_FLASH_IsActiveFlag_EOP(FLASH)==0);
/* Clear EOP */
LL_FLASH_ClearFlag_EOP(FLASH);
/* Disable EOP */
LL_FLASH_DisableIT_EOP(FLASH);
/* Disable Block Erase */
LL_FLASH_DisableBlockErase(FLASH);
}
/**
* @brief FLASH programming function
* @param None
* @retval None
*/
static void APP_FlashProgram(void)
{
uint32_t flash_program_start = FLASH_USER_START_ADDR ; /* Start address of user write flash */
uint32_t flash_program_end = (FLASH_USER_START_ADDR + sizeof(DATA)); /* End address of user write flash */
uint32_t *src = (uint32_t *)DATA; /* Pointer to array */
while (flash_program_start < flash_program_end)
{
/* Wait Busy=0 */
while(LL_FLASH_IsActiveFlag_BUSY(FLASH)==1);
/* Enable EOP */
LL_FLASH_EnableIT_EOP(FLASH);
/* Enable Program */
LL_FLASH_EnablePageProgram(FLASH);
/* Page Program */
LL_FLASH_PageProgram(FLASH,flash_program_start,src);
/* Wait Busy=0 */
while(LL_FLASH_IsActiveFlag_BUSY(FLASH)==1);
/* Wait EOP=1 */
while(LL_FLASH_IsActiveFlag_EOP(FLASH)==0);
/* Clear EOP */
LL_FLASH_ClearFlag_EOP(FLASH);
/* Disable EOP */
LL_FLASH_DisableIT_EOP(FLASH);
/* Disable Program */
LL_FLASH_DisablePageProgram(FLASH);
flash_program_start += FLASH_PAGE_SIZE; /* Point to the start address of the next page to be written */
src += FLASH_PAGE_SIZE / 4; /* Point to the next data to be written */
}
}
/**
* @brief FLASH blank check function
* @param None
* @retval None
*/
static void APP_FlashBlank(void)
{
uint32_t addr = 0;
while (addr < sizeof(DATA))
{
if (0xFFFFFFFF != HW32_REG(FLASH_USER_START_ADDR + addr))
{
APP_ErrorHandler();
}
addr += 4;
}
}
/**
* @brief FLASH verification function
* @param None
* @retval None
*/
static void APP_FlashVerify(void)
{
uint32_t addr = 0;
while (addr < sizeof(DATA))
{
if (DATA[addr / 4] != HW32_REG(FLASH_USER_START_ADDR + addr))
{
APP_ErrorHandler();
}
addr += 4;
}
}
/**
* @brief Configure system clock
* @param None
* @retval None
*/
static void APP_SystemClockConfig(void)
{
/* Enable HSI */
LL_RCC_HSI_Enable();
while(LL_RCC_HSI_IsReady() != 1)
{
}
/* Set AHB prescaler: HCLK = SYSCLK */
LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
/* Select HSI as system clock source */
LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_HSI);
while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_HSI)
{
}
/* Set APB1 & APB2 prescaler: PCLK1 = HCLK, PCLK2 = HCLK/2 */
LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
LL_RCC_SetAPB2Prescaler(LL_RCC_APB2_DIV_2);
/* Set systick to 1ms in using frequency set to 8MHz */
LL_Init1msTick(8000000);
/* Update the SystemCoreClock global variable(which can be updated also through SystemCoreClockUpdate function) */
LL_SetSystemCoreClock(8000000);
}
/**
* @brief Error handling function
* @param None
* @retval None
*/
void APP_ErrorHandler(void)
{
/* Infinite loop */
while (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 */
/************************ (C) COPYRIGHT Puya *****END OF FILE******************/