RD pin (FSMC_NOE) required?

[kemal]

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);}

[waclawek.jan]

Posted on October 12, 2017 at 17:26

RD pin (FSMC_NOE) required?

No.

JW