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RD pin (FSMC_NOE) required?

kemal
Associate II
Posted on October 12, 2017 at 15:02

Hi

There is no RD pin on the lcd.

there are only WR, RS, CS and 16 bit data bus.

RD pin (FSMC_NOE) required?

  Thank you.

void LCD_CtrlLinesConfig(void)

{

GPIO_InitTypeDef GPIO_InitStructure;

/* Enable GPIOD, GPIOE, GPIOF, GPIOG and AFIO clocks */

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD | RCC_AHB1Periph_GPIOE, ENABLE);

/*-- GPIO Configuration ------------------------------------------------------*/

/* SRAM Data lines, NOE and NWE configuration */

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_8 | GPIO_Pin_9 |

GPIO_Pin_10 | GPIO_Pin_14 | GPIO_Pin_15 |

GPIO_Pin_4 |GPIO_Pin_5;;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //GPIO_Pin_5 WR

GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;

GPIO_Init(GPIOD, &GPIO_InitStructure);

GPIO_PinAFConfig(GPIOD, GPIO_PinSource0, GPIO_AF_FSMC);

GPIO_PinAFConfig(GPIOD, GPIO_PinSource1, GPIO_AF_FSMC);

//GPIO_PinAFConfig(GPIOD, GPIO_PinSource4, GPIO_AF_FSMC);

GPIO_PinAFConfig(GPIOD, GPIO_PinSource5, GPIO_AF_FSMC);

GPIO_PinAFConfig(GPIOD, GPIO_PinSource8, GPIO_AF_FSMC);

GPIO_PinAFConfig(GPIOD, GPIO_PinSource9, GPIO_AF_FSMC);

GPIO_PinAFConfig(GPIOD, GPIO_PinSource10, GPIO_AF_FSMC);

GPIO_PinAFConfig(GPIOD, GPIO_PinSource14, GPIO_AF_FSMC);

GPIO_PinAFConfig(GPIOD, GPIO_PinSource15, GPIO_AF_FSMC);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 |

GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 |

GPIO_Pin_15;

GPIO_Init(GPIOE, &GPIO_InitStructure);

GPIO_PinAFConfig(GPIOE, GPIO_PinSource7 , GPIO_AF_FSMC);

GPIO_PinAFConfig(GPIOE, GPIO_PinSource8 , GPIO_AF_FSMC);

GPIO_PinAFConfig(GPIOE, GPIO_PinSource9 , GPIO_AF_FSMC);

GPIO_PinAFConfig(GPIOE, GPIO_PinSource10 , GPIO_AF_FSMC);

GPIO_PinAFConfig(GPIOE, GPIO_PinSource11 , GPIO_AF_FSMC);

GPIO_PinAFConfig(GPIOE, GPIO_PinSource12 , GPIO_AF_FSMC);

GPIO_PinAFConfig(GPIOE, GPIO_PinSource13 , GPIO_AF_FSMC);

GPIO_PinAFConfig(GPIOE, GPIO_PinSource14 , GPIO_AF_FSMC);

GPIO_PinAFConfig(GPIOE, GPIO_PinSource15 , GPIO_AF_FSMC);

/* NE1 configuration */

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;//CS

GPIO_Init(GPIOD, &GPIO_InitStructure);

GPIO_PinAFConfig(GPIOD, GPIO_PinSource7, GPIO_AF_FSMC);

/* SRAM Address lines configuration */

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;//RS

GPIO_Init(GPIOD, &GPIO_InitStructure);

GPIO_PinAFConfig(GPIOD, GPIO_PinSource11, GPIO_AF_FSMC);

}

/**

* @brief Configures the Parallel interface (FSMC) for LCD(Parallel mode)

* @param None

* @retval None

*/

void LCD_FSMCConfig(void)

{

FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure;

FSMC_NORSRAMTimingInitTypeDef p;

/* Enable FSMC clock */

RCC_AHB3PeriphClockCmd(RCC_AHB3Periph_FSMC, ENABLE);

RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG , ENABLE);

/*-- FSMC Configuration ------------------------------------------------------*/

/*----------------------- SRAM Bank 3 ----------------------------------------*/

/* FSMC_Bank1_NORSRAM4 configuration */

p.FSMC_AddressSetupTime = 0;

p.FSMC_AddressHoldTime = 0;

p.FSMC_DataSetupTime = 9;

p.FSMC_BusTurnAroundDuration = 0;

p.FSMC_CLKDivision = 1;

p.FSMC_DataLatency = 0;

p.FSMC_AccessMode = FSMC_AccessMode_A;

/* Color LCD configuration ------------------------------------

LCD configured as follow:

- Data/Address MUX = Disable

- Memory Type = SRAM

- Data Width = 16bit

- Write Operation = Enable

- Extended Mode = Enable

- Asynchronous Wait = Disable */

FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM1;

FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable;

FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_SRAM;

FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;

FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable;

FSMC_NORSRAMInitStructure.FSMC_AsynchronousWait = FSMC_AsynchronousWait_Disable;

FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low;

FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable;

FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;

FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable;

FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Enable;//

FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Enable;//

FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;

FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &p;

FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &p;

FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure);

/* Enable FSMC NOR/SRAM Bank3 */

FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM1, ENABLE);

}
1 REPLY 1
Posted on October 12, 2017 at 17:26

RD pin (FSMC_NOE) required?

No.

JW