Hello all,
I am struggling with a similar issue. I have a STM32F407 trying to use a ST7789V TFT display in 16 bit parallel mode. I have had no success in using FSMC with any drivers I've found online, even MXCube generated drivers. So far, I haven't had any success communicating with the device, even simply trying to read the device ID. I verified all 16 data lines are sending data but still get no response from the ST7789V.
I am transitioning a project from a Himax HX8347-D controller display TFT to a ST7789V controller display, so I know the FSMC works at least with the Himax.
I am trying the GPIO bus solution posted by @Mecanix and am having trouble with the DATAOUT function. Could you post your GPIO configuration? In the end, my project needs to use FSMC so timing help and tips are very appreciated, but for now any working solution will do.
FSMC Init Code:
FSMC_NORSRAM_TimingTypeDef Timing = {0};
/* USER CODE BEGIN FSMC_Init 1 */
/* USER CODE END FSMC_Init 1 */
/** Perform the SRAM1 memory initialization sequence
*/
hsram1.Instance = FSMC_NORSRAM_DEVICE;
hsram1.Extended = FSMC_NORSRAM_EXTENDED_DEVICE;
/* hsram1.Init */
hsram1.Init.NSBank = FSMC_NORSRAM_BANK4;
hsram1.Init.DataAddressMux = FSMC_DATA_ADDRESS_MUX_DISABLE;
hsram1.Init.MemoryType = FSMC_MEMORY_TYPE_SRAM;
hsram1.Init.MemoryDataWidth = FSMC_NORSRAM_MEM_BUS_WIDTH_16;
hsram1.Init.BurstAccessMode = FSMC_BURST_ACCESS_MODE_DISABLE;
hsram1.Init.WaitSignalPolarity = FSMC_WAIT_SIGNAL_POLARITY_LOW;
hsram1.Init.WrapMode = FSMC_WRAP_MODE_DISABLE;
hsram1.Init.WaitSignalActive = FSMC_WAIT_TIMING_BEFORE_WS;
hsram1.Init.WriteOperation = FSMC_WRITE_OPERATION_ENABLE;
hsram1.Init.WaitSignal = FSMC_WAIT_SIGNAL_DISABLE;
hsram1.Init.ExtendedMode = FSMC_EXTENDED_MODE_DISABLE;
hsram1.Init.AsynchronousWait = FSMC_ASYNCHRONOUS_WAIT_DISABLE;
hsram1.Init.WriteBurst = FSMC_WRITE_BURST_DISABLE;
hsram1.Init.PageSize = FSMC_PAGE_SIZE_NONE;
/* Timing */
Timing.AddressSetupTime = 15;
Timing.AddressHoldTime = 15;
Timing.DataSetupTime = 255;
Timing.BusTurnAroundDuration = 15;
Timing.CLKDivision = 16;
Timing.DataLatency = 17;
Timing.AccessMode = FSMC_ACCESS_MODE_A;
/* ExtTiming */
if (HAL_SRAM_Init(&hsram1, &Timing, NULL) != HAL_OK)
{
Error_Handler( );
} }
GPIO Bus File:
#ifndef INC_ST7789V_16BITS_H_
#define INC_ST7789V_16BITS_H_
#include "main.h"
#define USE_HORIZONTAL 2 // Change Orientation Modes (0,1,2,3)
#if USE_HORIZONTAL == 0 || USE_HORIZONTAL == 1
#define LCD_W 240
#define LCD_H 320
#else
#define LCD_W 320
#define LCD_H 240
#endif
/*
* 16bITS BUS
* ********************************************************************************************************************************
* D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15
* PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PB8 PB9 PB10 PB11 PA12* PB13 PB14 PB15
* ********************************************************************************************************************************
*/
static void DATAOUT(uint32_t i) {
GPIOE->BSRR = 0b1111111110000000 + 0xff; //setting reset mask for E7-E15
GPIOE->BSRR = ((((i) & (1<<7)) << 0)
| (((i) & (1<<8)) << 0)
| (((i) & (1<<9)) << 0)
| (((i) & (1<<10)) << 0)
| (((i) & (1<<11)) << 0)
| (((i) & (1<<12) << 0)
| (((i) & (1<<13)) << 0)
| (((i) & (1<<14)) << 0)
| (((i) & (1<<15)) << 0)));
GPIOD->BSRR = 0b1100011100110011<<16; //setting reset bits for D0-D1, D4-D5, D8-D10, D14-D15
GPIOD->BSRR = (((i) & (1<<0)) << 0)
| (((i) & (1<<1)) << 0)
| (((i) & (1<<4)) << 0)
| (((i) & (1<<5)) << 0)
| (((i) & (1<<8)) << 0)
| (((i) & (1<<9)) << 0)
| (((i) & (1<<10)) << 0)
| (((i) & (1<<14)) << 0)
| (((i) & (1<<15)) << 0);
}
// Set pins
#define LCD_RST_SET //GPIOB->ODR |= ( 1<<1 );//NRST
#define LCD_CS_SET HAL_GPIO_WritePin(GPIOG, GPIO_PIN_12, GPIO_PIN_SET);
#define LCD_DC_SET HAL_GPIO_WritePin(GPIOD, GPIO_PIN_5, GPIO_PIN_SET);//
#define LCD_WR_SET HAL_GPIO_WritePin(GPIOF, GPIO_PIN_0, GPIO_PIN_SET);//PD5
#define LCD_RD_SET HAL_GPIO_WritePin(GPIOD, GPIO_PIN_4, GPIO_PIN_SET);//PD4
// Reset pins
#define LCD_RST_CLR //GPIOB->ODR &= ~( 1<<1 );//NRST
#define LCD_CS_CLR HAL_GPIO_WritePin(GPIOG, GPIO_PIN_12, GPIO_PIN_RESET);
#define LCD_DC_CLR HAL_GPIO_WritePin(GPIOD, GPIO_PIN_5, GPIO_PIN_RESET);
#define LCD_WR_CLR HAL_GPIO_WritePin(GPIOF, GPIO_PIN_0, GPIO_PIN_RESET);
#define LCD_RD_CLR HAL_GPIO_WritePin(GPIOD, GPIO_PIN_4, GPIO_PIN_RESET);//PD4
void LCD_Init (void);
void LCD_Address_Set (uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2);
void LCD_Clear (uint16_t Color);
#endif
