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old code test

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This commit is contained in:
Johnny Hsu 2025-04-02 01:53:07 +02:00
parent 22d0567449
commit b7349c38af
1 changed files with 26 additions and 26 deletions
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52
Software/Core/Src/main.c
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@ -592,32 +592,32 @@ static void MX_FMC_Init(void)
}
/* USER CODE BEGIN FMC_Init 2 */
FMC_SDRAM_CommandTypeDef Command;
/* Step 1 and Step 2 already done in HAL_SDRAM_Init() */
/* Step 3: Configure a clock configuration enable command */
Command.CommandMode = FMC_SDRAM_CMD_CLK_ENABLE; /* Set MODE bits to "001" */
Command.CommandTarget = (FMC_SDRAM_CMD_TARGET_BANK1); /* configure the Target Bank bits */
Command.AutoRefreshNumber = 1;
Command.ModeRegisterDefinition = 0;
HAL_SDRAM_SendCommand(&hsdram1, &Command, 0xfff);
HAL_Delay(1); /* Step 4: Insert 100 us minimum delay - Min HAL Delay is 1ms */
/* Step 5: Configure a PALL (precharge all) command */
Command.CommandMode = FMC_SDRAM_CMD_PALL; /* Set MODE bits to "010" */
HAL_SDRAM_SendCommand(&hsdram1, &Command, 0xfff);
/* Step 6: Configure an Auto Refresh command */
Command.CommandMode = FMC_SDRAM_CMD_AUTOREFRESH_MODE; /* Set MODE bits to "011" */
Command.AutoRefreshNumber = 4;
HAL_SDRAM_SendCommand(&hsdram1, &Command, 0xfff);
/* Step 7: Program the external memory mode register */
Command.CommandMode = FMC_SDRAM_CMD_LOAD_MODE;/*set the MODE bits to "100" */
Command.ModeRegisterDefinition = (uint32_t)0 | 0<<3 | 2<<4 | 0<<7 | 1<<9;
Command.AutoRefreshNumber = 1;
HAL_SDRAM_SendCommand(&hsdram1, &Command, 0xfff);
/* Step 8: Set the refresh rate counter - refer to section SDRAM refresh timer register in RM0455 */
/* Set the device refresh rate
* COUNT = [(SDRAM self refresh time / number of row) x SDRAM CLK] – 20
= [(70ms/8138) * 200MHz] - 20 ~ 1700 */
HAL_SDRAM_ProgramRefreshRate(&hsdram1, 1700);
FMC_SDRAM_CommandTypeDef command;
HAL_StatusTypeDef status;
command.CommandTarget = FMC_SDRAM_CMD_TARGET_BANK1;
command.CommandMode = FMC_SDRAM_CMD_CLK_ENABLE;
command.AutoRefreshNumber = 1;
command.ModeRegisterDefinition = 0;
status = HAL_SDRAM_SendCommand(&hsdram1, &command, 1000);
HAL_Delay(1);
command.CommandMode = FMC_SDRAM_CMD_PALL;
command.AutoRefreshNumber = 8;
command.ModeRegisterDefinition = 0;
status = HAL_SDRAM_SendCommand(&hsdram1, &command, 1000);
command.CommandMode = FMC_SDRAM_CMD_LOAD_MODE;
command.AutoRefreshNumber = 1;
command.ModeRegisterDefinition = 0x130;
status = HAL_SDRAM_SendCommand(&hsdram1, &command, 1000);
command.CommandMode = FMC_SDRAM_CMD_AUTOREFRESH_MODE;
command.AutoRefreshNumber = 8;
command.ModeRegisterDefinition = 0;
status = HAL_SDRAM_SendCommand(&hsdram1, &command, 1000);
status = HAL_SDRAM_ProgramRefreshRate(&hsdram1, 0x0595);
/* USER CODE END FMC_Init 2 */
}