/*###ICF### Section handled by ICF editor, don't touch! ****/
/*-Editor annotation file-*/
/* IcfEditorFile="$TOOLKIT_DIR$\config\ide\IcfEditor\cortex_v1_0.xml" */
/*-Specials-*/
define symbol __ICFEDIT_intvec_start__ = 0x08000000;
/*-Memory Regions-*/
define symbol __ICFEDIT_region_ROM_start__ = 0x08000000;
define symbol __ICFEDIT_region_ROM_end__ = 0x081FFFFF;
define symbol __ICFEDIT_region_RAM_start__ = 0x20000000;
define symbol __ICFEDIT_region_RAM_end__ = 0x2007FFFF;
define symbol __ICFEDIT_region_ITCMRAM_start__ = 0x00000000;
define symbol __ICFEDIT_region_ITCMRAM_end__ = 0x0000FFFF;
/*-Sizes-*/
define symbol __ICFEDIT_size_cstack__ = 0x400;
define symbol __ICFEDIT_size_heap__ = 0x200;
/**** End of ICF editor section. ###ICF###*/
define memory mem with size = 4G;
define region ROM_region = mem:[from __ICFEDIT_region_ROM_start__ to __ICFEDIT_region_ROM_end__];
define region RAM_region = mem:[from __ICFEDIT_region_RAM_start__ to __ICFEDIT_region_RAM_end__];
define region ITCMRAM_region = mem:[from __ICFEDIT_region_ITCMRAM_start__ to __ICFEDIT_region_ITCMRAM_end__];
define region D2_SRAM2_region = mem:[from 0x24000000 to 0x2401FFFF];
define block CSTACK with alignment = 8, size = __ICFEDIT_size_cstack__ { };
define block HEAP with alignment = 8, size = __ICFEDIT_size_heap__ { };
initialize by copy { section .dma_buffer}; /* optional initialization of default values */
initialize by copy { readwrite };
do not initialize { section .noinit };
place in D2_SRAM2_region { section .dma_buffer};
place at address mem:__ICFEDIT_intvec_start__ { readonly section .intvec };
place in ROM_region { readonly };
place in RAM_region { readwrite,
block CSTACK, block HEAP };
the above code is my stm32h743xx_flash.icf file.
My code Tx buffer address is 0x24000000 and the Rx buffer is 0x24000008.
my test code:
DMA_BUFFER uint8_t Tx[5] = {1,5,7,8,4};
DMA_BUFFER uint8_t Rx[5];
/* USER CODE BEGIN Header_StartDefaultTask */
/**
* @brief Function implementing the defaultTask thread.
* @param argument: Not used
* @retval None
*/
/* USER CODE END Header_StartDefaultTask */
void StartDefaultTask(void const * argument)
{
/* init code for LWIP */
// MX_LWIP_Init();
SCB_CleanDCache_by_Addr((uint32_t*)(((uint32_t)Rx) & ~(uint32_t)0x1F), 5+32);
/* USER CODE BEGIN 5 */
/* Infinite loop */
for(;;)
{
HAL_UART_Receive_DMA(&huart6, Rx, 5);
if(Rx[0] == 4){
SCB_CleanDCache_by_Addr((uint32_t*)(((uint32_t)Tx) & ~(uint32_t)0x1F), 5+32);
HAL_UART_Transmit_DMA(&huart6, Tx, 5);
}
osDelay(500);
}
/* USER CODE END 5 */
}
