// write to a specified page in flash // page_addr: the page address that write to void write_embedded_flash_with_addr_len(uint32_t page_addr, uint8_t *buf, uint16_t len) { uint32_t saddr = page_addr; // start address for the page to write uint32_t eaddr = saddr+len; // end addrees for that page uint32_t *pbuf = (uint32_t*)buf; // Unlock the Flash Program Erase controller FLASH_Unlock(); // Clear All pending flags FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR | FLASH_FLAG_SIZERR); // Erase the FLASH pages FLASHStatus = FLASH_ErasePage(saddr); // write buf to that page while((saddr < eaddr) && (FLASHStatus == FLASH_COMPLETE)) { FLASHStatus = FLASH_FastProgramWord(saddr, *(pbuf)); //problem saddr = saddr + 4; pbuf++; } if (FLASHStatus != FLASH_COMPLETE) { HardFault_Handler();//enter_unexpected(); do something here; } // Lock flash FLASH_Lock(); }
/** * @brief Save the first BANK2 page inside the second BANK1. * @param None. * @retval None */ void FLASH_SaveBANK2(void) { FLASH_Unlock(); FLASH_ClearFlag(FLASH_FLAG_EOP|FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR | FLASH_FLAG_SIZERR | FLASH_FLAG_OPTVERR | FLASH_FLAG_OPTVERRUSR); /* Erase one page in BANK1 to store the first page */ FLASH_ErasePage(0x08020000); for(index = 0; index < 64; index++) { FLASH_FastProgramWord((0x08020000 + (index * 4)), (*(uint32_t *)(0x08030000 + (index * 4)))); } }
/** * @brief Main program * @param None * @retval None */ int main(void) { /*!< At this stage the microcontroller clock setting is already configured, this is done through SystemInit() function which is called from startup file (startup_stm32l1xx_xx.s) before to branch to application main. To reconfigure the default setting of SystemInit() function, refer to system_stm32l1xx.c file */ /* Set the vector table address */ #if defined(BOOT_FROM_BANK1) /* Set the vector table to the Bank1 start address */ NVIC_SetVectorTable(NVIC_VectTab_FLASH, BANK1_START_ADDRESS); #elif defined(BOOT_FROM_BANK2) /* Set the vector table to the Bank1 start address */ NVIC_SetVectorTable(NVIC_VectTab_FLASH, BANK2_START_ADDRESS); #endif /* BOOT_FROM_BANK1 */ /* Initialize LEDs, Buttons and LCD on STM32L152D-EVAL board ****************/ STM_EVAL_LEDInit(LED1); STM_EVAL_LEDInit(LED2); STM_EVAL_LEDInit(LED3); STM_EVAL_LEDInit(LED4); /* Save the first BANK1 page */ FLASH_SaveBANK1(); /* Save the first BANK2 page */ FLASH_SaveBANK2(); /* SysTick end of count event each 10ms */ RCC_GetClocksFreq(&RCC_Clocks); SysTick_Config(RCC_Clocks.HCLK_Frequency / 100); /* Configure the Joystick buttons */ STM_EVAL_PBInit(BUTTON_UP, BUTTON_MODE_GPIO); STM_EVAL_PBInit(BUTTON_SEL, BUTTON_MODE_GPIO); STM_EVAL_PBInit(BUTTON_DOWN, BUTTON_MODE_GPIO); STM_EVAL_PBInit(BUTTON_RIGHT, BUTTON_MODE_GPIO); STM_EVAL_PBInit(BUTTON_LEFT, BUTTON_MODE_GPIO); /* Initialize the LCD */ STM32L152D_LCD_Init(); /* Display message on STM32L152D-EVAL LCD ************************************/ /* Clear the LCD */ LCD_Clear(LCD_COLOR_WHITE); /* Set the LCD Back Color */ #if defined(BOOT_FROM_BANK1) LCD_SetBackColor(LCD_COLOR_BLUE); #elif defined(BOOT_FROM_BANK2) LCD_SetBackColor(LCD_COLOR_RED); #endif /* BOOT_FROM_BANK1 */ /* Set the LCD Text Color */ LCD_SetTextColor(LCD_COLOR_WHITE); LCD_DisplayStringLine(LCD_LINE_0, MESSAGE1); LCD_DisplayStringLine(LCD_LINE_1, MESSAGE2); LCD_DisplayStringLine(LCD_LINE_2, MESSAGE3); LCD_DisplayStringLine(LCD_LINE_4, MESSAGE4); LCD_SetFont(&Font12x12); LCD_SetTextColor(LCD_COLOR_GREEN); LCD_DisplayStringLine(LCD_LINE_10, MESSAGE5); LCD_DisplayStringLine(LCD_LINE_11, MESSAGE6); LCD_SetTextColor(LCD_COLOR_WHITE); LCD_DisplayStringLine(LCD_LINE_12, MESSAGE7); LCD_DisplayStringLine(LCD_LINE_13, MESSAGE8); LCD_SetTextColor(LCD_COLOR_GREEN); LCD_DisplayStringLine(LCD_LINE_14, MESSAGE9); LCD_DisplayStringLine(LCD_LINE_15, MESSAGE10); LCD_SetTextColor(LCD_COLOR_WHITE); LCD_DisplayStringLine(LCD_LINE_16, MESSAGE11); LCD_DisplayStringLine(LCD_LINE_17, MESSAGE12); LCD_SetTextColor(LCD_COLOR_GREEN); LCD_DisplayStringLine(LCD_LINE_18, MESSAGE13); LCD_DisplayStringLine(LCD_LINE_19, MESSAGE14); LCD_SetTextColor(LCD_COLOR_WHITE); LCD_SetFont(&Font16x24); /* Turn on leds available on STM32L152D-EVAL ************************************/ STM_EVAL_LEDOn(LED1); STM_EVAL_LEDOn(LED2); STM_EVAL_LEDOn(LED3); STM_EVAL_LEDOn(LED4); /* Infinite loop */ while (1) { /*--- If Joystick DOWN button is pushed, reset BFB2 bit to enable boot from Bank2 (active after next reset, w/ Boot pins set in Boot from Flash memory position ---*/ if (STM_EVAL_PBGetState(BUTTON_DOWN) == 0) { /* Reset BFB2 bit to enable boot from Flash Bank2 */ FLASH_Unlock(); FLASH_OB_Unlock(); FLASH_ClearFlag(FLASH_FLAG_EOP|FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR | FLASH_FLAG_SIZERR | FLASH_FLAG_OPTVERR | FLASH_FLAG_OPTVERRUSR); FLASH_OB_UserConfig(OB_IWDG_SW, OB_STOP_NoRST, OB_STDBY_NoRST); FLASH_OB_BORConfig(OB_BOR_LEVEL1); if (FLASH_OB_BootConfig(OB_BOOT_BANK2) == FLASH_COMPLETE) { /* Generate System Reset to load the new option byte values */ FLASH_OB_Launch(); } else { /* Display information */ LCD_DisplayStringLine(LCD_LINE_6, MESSAGE15); } } /*--- If Joystick UP button is pushed, set BFB2 bit to enable boot from Bank1 (active after next reset, w/ Boot pins set in Boot from Flash memory position ---*/ if (STM_EVAL_PBGetState(BUTTON_UP) == 0) { /* Set BFB2 bit to enable boot from Flash Bank2 */ FLASH_Unlock(); FLASH_OB_Unlock(); FLASH_ClearFlag(FLASH_FLAG_EOP|FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR | FLASH_FLAG_SIZERR | FLASH_FLAG_OPTVERR | FLASH_FLAG_OPTVERRUSR); FLASH_OB_UserConfig(OB_IWDG_SW, OB_STOP_NoRST, OB_STDBY_NoRST); FLASH_OB_BORConfig(OB_BOR_LEVEL1); if (FLASH_OB_BootConfig(OB_BOOT_BANK1) == FLASH_COMPLETE) { /* Generate System Reset to load the new option byte values */ FLASH_OB_Launch(); } else { /* Display information */ LCD_DisplayStringLine(LCD_LINE_6, MESSAGE15); } } /*--- If Joystick LEFT button is pushed, program the content of address 0x08000000 (base address of Bank1) to 0x00 ---*/ if (STM_EVAL_PBGetState(BUTTON_LEFT) == 0) { FLASH_Unlock(); FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR | FLASH_FLAG_SIZERR | FLASH_FLAG_OPTVERR | FLASH_FLAG_OPTVERRUSR); /* Erase stack pointer value at Bank 1 start address */ FLASH_ErasePage(0x08000000); FLASH_Lock(); LCD_ClearLine(LCD_LINE_5); LCD_ClearLine(LCD_LINE_7); LCD_ClearLine(LCD_LINE_8); LCD_ClearLine(LCD_LINE_9); /* Check if erase operation is OK */ if ((uint32_t)(*(uint32_t *)BANK1_START_ADDRESS) != 0x00) { /* Display information */ LCD_DisplayStringLine(LCD_LINE_6, MESSAGE15); } else { /* Display information */ LCD_DisplayStringLine(LCD_LINE_6, MESSAGE16); } } /*--- If Joystick RIGHT button is pushed, program the content of address 0x08030000 (base address of Bank2) to 0x00 ---*/ if (STM_EVAL_PBGetState(BUTTON_RIGHT) == 0) { FLASH_Unlock(); FLASH_ClearFlag(FLASH_FLAG_EOP|FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR | FLASH_FLAG_SIZERR | FLASH_FLAG_OPTVERR | FLASH_FLAG_OPTVERRUSR); /* Erase stack pointer value at Bank 2 start address */ FLASH_ErasePage(0x08030000); FLASH_Lock(); LCD_ClearLine(LCD_LINE_5); LCD_ClearLine(LCD_LINE_7); LCD_ClearLine(LCD_LINE_8); LCD_ClearLine(LCD_LINE_9); /* Check if erase operation is OK */ if ((uint32_t)(*(uint32_t *)BANK2_START_ADDRESS) != 0x00) { /* Display information */ LCD_DisplayStringLine(LCD_LINE_6, MESSAGE15); } else { /* Display information */ LCD_DisplayStringLine(LCD_LINE_6, MESSAGE16); } } /*--- If Joystick UP button is pushed, copy the program to the cross bank --*/ if (STM_EVAL_PBGetState(BUTTON_SEL) == 0) { FLASH_Unlock(); FLASH_ClearFlag(FLASH_FLAG_EOP|FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR | FLASH_FLAG_SIZERR | FLASH_FLAG_OPTVERR | FLASH_FLAG_OPTVERRUSR); #if defined (BOOT_FROM_BANK1) /* Erase one page in BANK2 to store the first page */ FLASH_ErasePage(0x08030000); for(index = 0; index < 64; index++) { FLASH_FastProgramWord((0x08030000 + (index * 4)), (*(uint32_t *)(0x08020000 + (index * 4)))); } #elif defined (BOOT_FROM_BANK2) /* Erase one page in BANK1 to store the first page */ FLASH_ErasePage(0x08000000); for(index = 0; index < 64; index++) { FLASH_FastProgramWord((0x08000000 + (index * 4)), (*(uint32_t *)(0x08050000 + (index * 4)))); } #endif } /* Toggle LD3 */ STM_EVAL_LEDToggle(LED3); /* Insert 50 ms delay */ Delay(5); /* Toggle LD2 */ STM_EVAL_LEDToggle(LED2); /* Insert 100 ms delay */ Delay(10); } }