I am using below development tools
MCU: STM32H7B3IIT6
IDE: STM32CubeIDE Version: 1.8.0
GUI: TouchGFX Version: 4.18.1
SDRAM: IS45S16800F-7CTLA1-TR
When activeted SDRAM, touch part dont work and screen is frezee, FMC settings are as follows.
/* FMC initialization function */
static void MX_FMC_Init(void)
{
/* USER CODE BEGIN FMC_Init 0 */
/* USER CODE END FMC_Init 0 */
FMC_SDRAM_TimingTypeDef SdramTiming = {0};
/* USER CODE BEGIN FMC_Init 1 */
/* USER CODE END FMC_Init 1 */
/** Perform the SDRAM2 memory initialization sequence
*/
hsdram2.Instance = FMC_SDRAM_DEVICE;
/* hsdram2.Init */
hsdram2.Init.SDBank = FMC_SDRAM_BANK2;
hsdram2.Init.ColumnBitsNumber = FMC_SDRAM_COLUMN_BITS_NUM_9;
hsdram2.Init.RowBitsNumber = FMC_SDRAM_ROW_BITS_NUM_12;
hsdram2.Init.MemoryDataWidth = FMC_SDRAM_MEM_BUS_WIDTH_16;
hsdram2.Init.InternalBankNumber = FMC_SDRAM_INTERN_BANKS_NUM_4;
hsdram2.Init.CASLatency = FMC_SDRAM_CAS_LATENCY_2;
hsdram2.Init.WriteProtection = FMC_SDRAM_WRITE_PROTECTION_DISABLE;
hsdram2.Init.SDClockPeriod = FMC_SDRAM_CLOCK_PERIOD_2;
hsdram2.Init.ReadBurst = FMC_SDRAM_RBURST_ENABLE;
hsdram2.Init.ReadPipeDelay = FMC_SDRAM_RPIPE_DELAY_2;
/* SdramTiming */
SdramTiming.LoadToActiveDelay = 2;
SdramTiming.ExitSelfRefreshDelay = 7;
SdramTiming.SelfRefreshTime = 5;
SdramTiming.RowCycleDelay = 6;
SdramTiming.WriteRecoveryTime = 3;
SdramTiming.RPDelay = 2;
SdramTiming.RCDDelay = 2;
if (HAL_SDRAM_Init(&hsdram2, &SdramTiming) != HAL_OK)
{
Error_Handler( );
}
/* USER CODE BEGIN FMC_Init 2 */
FMC_SDRAM_CommandTypeDef Command;
/* Step 1: Configure a clock configuration enable command */
Command.CommandMode = FMC_SDRAM_CMD_CLK_ENABLE;
Command.CommandTarget = FMC_SDRAM_CMD_TARGET_BANK2;
Command.AutoRefreshNumber = 1;
Command.ModeRegisterDefinition = 0;
HAL_SDRAM_SendCommand(&hsdram2, &Command, 0xfff);
/* Step 2: Insert 100 us minimum delay */
/* Inserted delay is equal to 1 ms due to systick time base unit (ms) */
HAL_Delay(1);
/* Step 3: Configure a PALL (precharge all) command */
Command.CommandMode = FMC_SDRAM_CMD_PALL;
HAL_SDRAM_SendCommand(&hsdram2, &Command, 0xfff);
/* Step 4: Configure an Auto Refresh command */
Command.CommandMode = FMC_SDRAM_CMD_AUTOREFRESH_MODE;
Command.AutoRefreshNumber = 2;
HAL_SDRAM_SendCommand(&hsdram2, &Command, 0xfff);
/* Step 5: Program the external memory mode register */
Command.CommandMode = FMC_SDRAM_CMD_LOAD_MODE;
Command.ModeRegisterDefinition = (uint32_t)0 | 0<<3 | 2<<4 | 0<<7 | 1<<9;
HAL_SDRAM_SendCommand(&hsdram2, &Command, 0xfff);
/* Step 6: Set the refresh rate counter */
/* Set the device refresh rate */
HAL_SDRAM_ProgramRefreshRate(&hsdram2, 1542);
/* USER CODE END FMC_Init 2 */
}
