3.5" inch TFT LCD Display Module 480X320 driven with FSMC.
TFT LCD Display Module 480X320 driven with FSMC
I have recently bought a 3.5" inch TFT LCD Touch Screen Display Module 480X320 with a www.mcufriend.com
label on the back side. The display was equipped with an 8bit parallel interface. First I decided to test it with the UniGraphic library using the BUS_8
protocol. The display was very slow but improved when I switched to the PAR_8
protocol. Because I heard about the possibility to use a Flexible Static Memory Controller (FSMC), built into some STM MCU's, to drive LCD's (read/write to LCD's memory rather than to an external SRAM) I thought it would be a fun to try it out.
Below is the brief story of what I did:
- Created a project for my STM32F407VE board in the STM32CubeIDE
- Set the
Clock Configuration
to match the one used by Mbed for the Seeed Arch Max board:
- Selected
FSMC
in theConnectivity
category and configured it as below: - Let the
STM32CubeIDE
generate the code (files). - Created a new program for the Seeed Arch Max target in the Mbed Online Compiler by selecting a
mbed os blinky
template. - Replaced the
main.cpp
with themain.c
content of theSTM32CubeIDE
project. Copy & Pasted
the other files with codes from theSTM32CubeIDE
project to the online compiler project.- Renamed and modified:
"stm32f4xx_it.h" to "stm32f4xx_it_msp.h"
"stm32f4xx_it.c" to "stm32f4xx_it_msp.c" - Added the UniGraphic library to the online compiler project.
- Extended the
UniGraphic
library with aFSMC_8
protocol and replaced theTFT::set_orientation(int orient)
function with the one used bymcufriend
for arduino. - Modified the
main.cpp
as needed.
Wiring
STM32F407VE | TFT LCD module |
---|---|
+3.3V | 3V3 |
GND | GND |
PB_12 | LCD_RST |
GND | LCD_CS |
PD_13 (RS) | LCD_RS |
PD_5 (WR) | LCD_WR |
PD_4 (RD) | LCD_RD |
PD_14 (DB00) | LCD_D0 |
PD_15 (DB01) | LCD_D1 |
PD_0 (DB02) | LCD_D2 |
PD_1 (DB03) | LCD_D3 |
PE_7 (DB04) | LCD_D4 |
PE_8 (DB05) | LCD_D5 |
PE_9 (DB06) | LCD_D6 |
PE_10 (DB07) | LCD_D7 |
Results
Execution times | ||
---|---|---|
Used protocol | BUS_8 | FSMC_8 |
Operation \ Time | ms | ms |
Clear | 2283.980 | 38.454 |
Plot | 192.066 | 11.365 |
8bit BMP | 63.805 | 41.338 |
Large Font | 163.872 | 7.895 |
Sparce pixels | 2072.265/1458.051 | 74.107/52.168 |
16bit BMP | 2288.589 | 59.904 |
pict.h
- Committer:
- hudakz
- Date:
- 2020-09-25
- Revision:
- 1:47c996032a9e
- Parent:
- 0:fa952828e34c
File content as of revision 1:47c996032a9e:
#ifndef PICT_H #define PICT_H #ifdef TOOLCHAIN_GCC char burp[] __attribute__((aligned (2))) = { #else //__align(2) char burp[] = { /* 0X00,0X01,0X40,0X00,0X40,0X00, */ #endif 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X10,0X00,0X00, 0X00,0X00,0X00,0X1F,0X10,0XF0,0X00,0X00,0X00,0X00,0X40,0X0F,0XC9,0XE0,0X00,0X00, 0X00,0X00,0X3C,0X1F,0XFF,0XC0,0X00,0X00,0X00,0X00,0X1F,0XFF,0XFF,0XF8,0X00,0X00, 0X00,0X00,0XFF,0XFF,0XFF,0XFE,0X00,0X00,0X00,0X01,0XFF,0XFF,0XFF,0XF8,0X00,0X00, 0X00,0X00,0XFF,0XFF,0XFF,0XF0,0X00,0X00,0X00,0X00,0XFF,0XFF,0XFF,0XF8,0X00,0X00, 0X00,0X01,0XFF,0XFF,0XFF,0XBC,0X00,0X00,0X00,0X07,0XFF,0XFF,0XFF,0X07,0X00,0X00, 0X00,0X0F,0XFF,0XFF,0XF1,0X80,0X30,0X00,0X00,0X0F,0XFF,0XFF,0XC0,0X67,0XF0,0X00, 0X00,0X0F,0XFF,0XFF,0X80,0X38,0X08,0X00,0X00,0X0F,0XFF,0XFC,0X00,0X10,0X00,0X00, 0X00,0X1F,0XFF,0XF8,0X00,0X00,0X00,0X00,0X00,0X1F,0XFD,0XE8,0X00,0X00,0X00,0X00, 0X00,0X3F,0XDD,0XC8,0X00,0X00,0X00,0X00,0X00,0X7F,0XEF,0X88,0X18,0X00,0X18,0X00, 0X01,0X7F,0X3F,0X08,0X18,0X00,0X18,0X00,0X07,0X7C,0X35,0X08,0X00,0X00,0X00,0X00, 0X26,0X7E,0X00,0X0C,0X00,0X18,0X00,0X00,0X84,0X5E,0X00,0X04,0X00,0X3F,0XFE,0X00, 0X84,0X1B,0XC0,0X02,0X00,0X40,0X01,0X00,0X84,0X00,0X00,0X01,0X80,0X80,0X01,0X00, 0X84,0X00,0X00,0X00,0X7E,0X00,0X01,0X00,0X8E,0X00,0X00,0X23,0XFC,0X00,0X01,0X00, 0X8E,0X00,0X00,0X98,0XE0,0X0C,0X02,0X00,0X8A,0X00,0X01,0X04,0X06,0X0F,0XFE,0X00, 0X8A,0X00,0X02,0X02,0X08,0X80,0X21,0X86,0X8B,0X00,0X02,0X81,0X30,0X40,0X60,0X7E, 0X89,0X00,0X07,0XC4,0XC0,0X21,0XB8,0X0C,0X89,0X00,0X0F,0XFE,0X20,0X1E,0X06,0X38, 0X89,0X80,0X1F,0XFF,0XFC,0X00,0X00,0XC0,0X88,0X80,0X3F,0XFF,0XF8,0X00,0X00,0X00, 0X88,0XC0,0X1F,0XFF,0XE8,0X00,0X00,0X00,0X88,0X40,0X0F,0XFF,0XE8,0X00,0X00,0X00, 0X88,0X60,0X07,0XFF,0XFC,0X00,0X00,0X00,0X88,0X20,0X07,0XFF,0XFE,0X00,0X00,0X00, 0X88,0X30,0X07,0XFF,0XFC,0X80,0X00,0X00,0X88,0X18,0X03,0XFF,0XFC,0X00,0X00,0X00, 0XC4,0X08,0X03,0XE3,0XFE,0X10,0X00,0X00,0XC4,0X0C,0X00,0XC3,0XF1,0X98,0X00,0X00, 0XC4,0X06,0X00,0X00,0XE0,0XFC,0X00,0X00,0XC4,0XE3,0X00,0X00,0X00,0X18,0X00,0X00, 0XA3,0XFD,0X00,0X00,0X0F,0XF0,0X00,0X00,0XA0,0X07,0X80,0X00,0X3A,0XC1,0X00,0X00, 0XA0,0X03,0XC0,0X00,0XF2,0X00,0X80,0X00,0XA0,0X01,0XC0,0X00,0XF2,0X00,0X80,0X00, 0XA0,0X00,0X60,0X00,0XFE,0X00,0X00,0X00,0XE0,0X00,0X20,0X00,0X4E,0X00,0X40,0X00, 0XE0,0X00,0X30,0X00,0XC4,0X00,0X00,0X00,0XC0,0X00,0X10,0X00,0XC2,0X00,0X20,0X00, 0XC0,0X00,0X18,0X77,0X82,0X00,0X80,0X00,0X80,0X00,0X0D,0XF7,0X81,0X01,0X00,0X00, 0X80,0X00,0X05,0XB7,0X81,0X06,0X00,0X00,0X80,0X00,0X07,0XFF,0X01,0XFA,0X00,0X00, 0X80,0X00,0X02,0XFD,0X00,0XC2,0X00,0X00,0X80,0X00,0X02,0X7F,0X00,0X82,0X00,0X00, 0X80,0X00,0X03,0X7E,0X00,0XC2,0X00,0X00,0X80,0X00,0X01,0XFE,0X00,0X42,0X00,0X00, 0X80,0X00,0X01,0XB4,0X00,0X42,0X00,0X00,0X80,0X00,0X00,0XBC,0X00,0X42,0X00,0X00, }; #endif // PICT_H