My LCD doesn't work (How does FSMC work?)

[rozehtiyan]

Posted on August 09, 2015 at 16:17

Hi everybody

I'm trying to operate my LCD via FSMC but it doesn't work. this is the pinout of the LCD:

http://img4.uplood.fr/free/sh8w_20150809_1755jpg

These pins are NC(not connected) in my circuit that I wired up: -Y,+Y,-X,+X,IM0 and these are the pins on my board for connecting to LCD(please ignore the pins in the black rectangle. I mean I don't use them in my circuit):

http://img4.uplood.fr/free/0vc2_20150809_1756jpg

The pins of this Pin-header is connected to these pins of STM32F103ZET on the board:

http://img4.uplood.fr/free/gp0e_bor.png

After I saw that the LCD didn't, I connected my Salea logic analizer to these pins(the pins of the pin-header) and relized that RS pin don't any action. What's wrong? I use this function to initiate the FSMC:

static
void
FSMC_LCDBUS_Init(
void
)
{
FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure;
FSMC_NORSRAMTimingInitTypeDef pw,pr;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOG | RCC_APB2Periph_GPIOE |
RCC_APB2Periph_GPIOF , ENABLE);
RCC_AHBPeriphClockCmd( RCC_AHBPeriph_FSMC , ENABLE );
/*-- GPIO Configuration ------------------------------------------------------*/
/* SRAM Data lines configuration */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_4 |GPIO_Pin_5 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 |
GPIO_Pin_10 | GPIO_Pin_14 | GPIO_Pin_15 | GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_3 | 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);
//TODO - get rid of address lines!!!
/* SRAM Address lines configuration */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_12 |
GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
GPIO_Init(GPIOF, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5;
GPIO_Init(GPIOG, &GPIO_InitStructure);
/*-- FSMC Configuration ------------------------------------------------------*/
pr.FSMC_AddressSetupTime = (5/T_HCK+1);
pr.FSMC_AddressHoldTime = (5/T_HCK+1);
pr.FSMC_DataSetupTime = (100/T_HCK+1);
pr.FSMC_BusTurnAroundDuration = 0;
pr.FSMC_CLKDivision = 0;
pr.FSMC_DataLatency = 0;
pr.FSMC_AccessMode = FSMC_AccessMode_A;
pw.FSMC_AddressSetupTime = (5/T_HCK+1);
pw.FSMC_AddressHoldTime = (5/T_HCK+1);
pw.FSMC_DataSetupTime = ((20+15)/T_HCK+1);
pw.FSMC_BusTurnAroundDuration = 0;
pw.FSMC_CLKDivision = 0;
pw.FSMC_DataLatency = 0;
pw.FSMC_AccessMode = FSMC_AccessMode_A;
FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM2;
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_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_Disable;
FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable;
FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;
FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = ≺
FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &pw;
FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure);
/* Enable FSMC Bank1_SRAM Bank */
FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM2, ENABLE);
}

And I use this function to write in the registers of the LCD:

void
LCDBUS_WriteReg(u16 regn, u16 val)
{
*LCDBUS_RSLOW_ADDR = regn;
*LCDBUS_RSHIGH_ADDR = val;
}

And for ''LCDBUS_RSLOW_ADDR'' and ''LCDBUS_RSHIGH_ADDR'' :

#define LCDBUS_RSLOW_ADDR ((vu16 *)0x60000000)
#define LCDBUS_RSHIGH_ADDR ((vu16 *)(0x60000000 | (1<<(19+1))))

In your opinion What's wrong with the FSMC? #stm32f103zet

[Tesla DeLorean]

Posted on August 09, 2015 at 16:49

What's wrong?

Perhaps if you wrote down the connectivity, pin names, and functions on the STM32 it would be more apparent why it's not working. Pasting bitmaps, and the lack of supporting commentary in the source, suggests you haven't done this.