hi
ich versuche es kurz zu fassen:
µC: STM32F745
LCDC: Epson S1D13781
TFT: 3,5" 24bit RGB
benutzt wird CubeMX und die HAL lib
Der S1D13781 über indirect 8bit mode am FSMC verbunden:
1 | /** FMC GPIO Configuration
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2 | PE2 ------> FMC_A23 ---> P/C#
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3 | PD14 ------> FMC_D0 ---> DB0
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4 | PD15 ------> FMC_D1 ---> DB1
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5 | PD0 ------> FMC_D2 ---> DB2
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6 | PD1 ------> FMC_D3 ---> DB3
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7 | PE7 ------> FMC_D4 ---> DB4
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8 | PE8 ------> FMC_D5 ---> DB5
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9 | PE9 ------> FMC_D6 ---> DB6
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10 | PE10 ------> FMC_D7 ---> DB7
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11 | PD4 ------> FMC_NOE ---> RD
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12 | PD5 ------> FMC_NWE ---> WR
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13 | PD7 ------> FMC_NE1 ---> CS
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14 | */
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15 | // GPIO Parameter:
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16 | GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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17 | GPIO_InitStruct.Pull = GPIO_PULLUP;
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18 | GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
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19 | GPIO_InitStruct.Alternate = GPIO_AF12_FMC;
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FSMC ist folgendermaßen initialisiert:
1 | static void MX_FMC_Init(void)
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2 | {
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3 | FMC_NORSRAM_TimingTypeDef Timing;
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4 |
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5 | /** Perform the SRAM1 memory initialization sequence
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6 | */
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7 | hsram1.Instance = FMC_NORSRAM_DEVICE;
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8 | hsram1.Extended = FMC_NORSRAM_EXTENDED_DEVICE;
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9 | /* hsram1.Init */
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10 | hsram1.Init.NSBank = FMC_NORSRAM_BANK1;
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11 | hsram1.Init.DataAddressMux = FMC_DATA_ADDRESS_MUX_DISABLE;
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12 | hsram1.Init.MemoryType = FMC_MEMORY_TYPE_SRAM;
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13 | hsram1.Init.MemoryDataWidth = FMC_NORSRAM_MEM_BUS_WIDTH_8;
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14 | hsram1.Init.BurstAccessMode = FMC_BURST_ACCESS_MODE_DISABLE;
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15 | hsram1.Init.WaitSignalPolarity = FMC_WAIT_SIGNAL_POLARITY_LOW;
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16 | hsram1.Init.WaitSignalActive = FMC_WAIT_TIMING_BEFORE_WS;
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17 | hsram1.Init.WriteOperation = FMC_WRITE_OPERATION_ENABLE;
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18 | hsram1.Init.WaitSignal = FMC_WAIT_SIGNAL_DISABLE;
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19 | hsram1.Init.ExtendedMode = FMC_EXTENDED_MODE_DISABLE;
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20 | hsram1.Init.AsynchronousWait = FMC_ASYNCHRONOUS_WAIT_DISABLE;
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21 | hsram1.Init.WriteBurst = FMC_WRITE_BURST_DISABLE;
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22 | hsram1.Init.ContinuousClock = FMC_CONTINUOUS_CLOCK_SYNC_ONLY;
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23 | hsram1.Init.WriteFifo = FMC_WRITE_FIFO_DISABLE;
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24 | hsram1.Init.PageSize = FMC_PAGE_SIZE_NONE;
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25 | /* Timing */
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26 | Timing.AddressSetupTime = 10;
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27 | Timing.AddressHoldTime = 0;
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28 | Timing.DataSetupTime = 40;
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29 | Timing.BusTurnAroundDuration = 0;
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30 | Timing.CLKDivision = 0;
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31 | Timing.DataLatency = 0;
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32 | Timing.AccessMode = FMC_ACCESS_MODE_B;
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33 | if (HAL_SRAM_Init(&hsram1, &Timing, NULL ) != HAL_OK)
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34 | {
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35 | Error_Handler();
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36 | }
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37 |
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38 | /*Configure GPIO pin : PA8 */
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39 | GPIO_InitStruct.Pin = GPIO_PIN_8;
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40 | GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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41 | GPIO_InitStruct.Pull = GPIO_NOPULL;
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42 | GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
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43 | GPIO_InitStruct.Alternate = GPIO_AF0_MCO;
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44 | HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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45 |
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46 | HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_HSI, RCC_MCODIV_2);// 8Mhz
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47 | }
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mit den Modi und den Timings habe ich schon gespielt.
Daraus ergeben sich folgende Adressen:
1 | volatile char * LCD_COMMAND_ptr = ((char *) 0x60000000);
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2 | volatile char * LCD_DATA_ptr = ((char *) (0x60000000 + ( 1 << 23))); // RS an pin A23
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Laut datenblatt des S1D13781 :
1 | //write :
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2 | *LCD_COMMAND_ptr = (UInt8) addr;
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3 | *LCD_COMMAND_ptr = (UInt8)(addr>> 8);
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4 | *LCD_COMMAND_ptr = (UInt8)(addr>>16);
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5 |
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6 | *LCD_DATA_ptr = (UInt8) val;
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7 | *LCD_DATA_ptr = (UInt8)(val>> 8);
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8 |
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9 | // read
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10 | *LCD_COMMAND_ptr = (UInt8) addr;
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11 | *LCD_COMMAND_ptr = (UInt8)(addr>> 8);
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12 | *LCD_COMMAND_ptr = (UInt8)(addr>>16);
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13 | UInt16 Value = (UInt16)*LCD_DATA_ptr<<0;
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14 | Value |= (UInt16)*LCD_DATA_ptr<<8;
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Jedoch kommt nicht das heraus was im Datenblatt steht
Hat vieleicht jemand den Epson controler am laufen und kann tips geben?
Oder mache ich am FSMC was falsch?
Vielen dank
Grüße
