Hi everyone. I'm using EK-TM4C1294XL with TFT 2.8 SPI Module ILI9341 LCD (http://www.lcdwiki.com/2.8inch_SPI_Module_ILI9341_SKU:MSP2807) and i've got a problem: low FPS.
I'm using SYS-BIOS on EK-TM4C1294XL module. I created a little API for easy using SPI
void SPI_Configuration()
{
SPI_Params_init(&SPI_Parameters);
SPI_Parameters.mode = SPI_MASTER;
SPI_Parameters.bitRate = 60000000;
SPI_Parameters.dataSize = 8;
SPI_Parameters.transferMode = SPI_MODE_BLOCKING;
SPI_H = SPI_open(0, &SPI_Parameters);
if (!SPI_H)
{
System_abort("An attempt to configurate module \"SPI\" was unsuccessful!");
}
}
unsigned char SPI_Send(unsigned char *Data_Ptr, unsigned int Data_Length)
{
unsigned char Answer = 0x0;
SPI_Message_Data.count = Data_Length;
SPI_Message_Data.txBuf = Data_Ptr;
Answer = SPI_transfer(SPI_H, &SPI_Message_Data);
return Answer;
}
For LCD i created an API too
void TFT_Send_Command(unsigned char Command)
{
GPIO_write(TFT_DC, 0);
SPI_Send(&Command, 1);
}
void TFT_Send_Parameter(unsigned char Parameter)
{
GPIO_write(TFT_DC, 1);
SPI_Send(&Parameter, 1);
}
void TFT_Send_Word(unsigned short Word)
{
GPIO_write(TFT_DC, 1);
SPI_Send((unsigned char*)&Word, 2);
}
void TFT_Select_Workspace(TFT_Point_Struct Start_Point, TFT_Point_Struct Stop_Point)
{
TFT_Send_Command(0x2A);
TFT_Send_Parameter((Start_Point.X & 0xFF00) >> 8);
TFT_Send_Parameter( Start_Point.X & 0xFF);
TFT_Send_Parameter(( Stop_Point.X & 0xFF00) >> 8);
TFT_Send_Parameter( Stop_Point.X & 0xFF);
TFT_Send_Command(0x2B);
TFT_Send_Parameter((Start_Point.Y & 0xFF00) >> 8);
TFT_Send_Parameter(Start_Point.Y & 0xFF);
TFT_Send_Parameter((Stop_Point.Y & 0xFF00) >> 8);
TFT_Send_Parameter(Stop_Point.Y & 0xFF);
}
void TFT_Fill_All_Display(unsigned short Color)
{
int i = 0;
TFT_Select_Workspace(TFT_Start_Point, TFT_Stop_Point);
TFT_Send_Command(0x2C);
for (i = 0; i < TFT_RESOLUTION_X * TFT_RESOLUTION_Y; i++)
{
TFT_Send_Word(Color);
}
}
void TFT_Turn_On(void)
{
TFT_Start_Point.X = 0;
TFT_Start_Point.Y = 0;
TFT_Stop_Point.X = 240;
TFT_Stop_Point.Y = 320;
GPIO_write(TFT_LED_LIGHT, 1);
GPIO_write(TFT_RESET, 0);
Task_sleep(150);
GPIO_write(TFT_RESET, 1);
Task_sleep(150);
TFT_Send_Command(0x11);
Task_sleep(150);
TFT_Send_Command(0x29);
Task_sleep(150);
// Color format
TFT_Send_Command(0x3A);
TFT_Send_Parameter(0x55);
// Gamma 3
TFT_Send_Command(0xF2);
TFT_Send_Parameter(0x00);
// Gamma select
TFT_Send_Command(0x26);
TFT_Send_Parameter(0x01);
// Positive gammga
TFT_Send_Command(0xE0);
TFT_Send_Parameter(0x0F);
TFT_Send_Parameter(0x2A);
TFT_Send_Parameter(0x28);
TFT_Send_Parameter(0x08);
TFT_Send_Parameter(0x0E);
TFT_Send_Parameter(0x08);
TFT_Send_Parameter(0x54);
TFT_Send_Parameter(0xA9);
TFT_Send_Parameter(0x43);
TFT_Send_Parameter(0x0A);
TFT_Send_Parameter(0x0F);
TFT_Send_Parameter(0x00);
TFT_Send_Parameter(0x00);
TFT_Send_Parameter(0x00);
TFT_Send_Parameter(0x00);
// Negative gamma
TFT_Send_Command(0xE1);
TFT_Send_Parameter(0x00);
TFT_Send_Parameter(0x15);
TFT_Send_Parameter(0x17);
TFT_Send_Parameter(0x07);
TFT_Send_Parameter(0x11);
TFT_Send_Parameter(0x06);
TFT_Send_Parameter(0x2B);
TFT_Send_Parameter(0x56);
TFT_Send_Parameter(0x3C);
TFT_Send_Parameter(0x05);
TFT_Send_Parameter(0x10);
TFT_Send_Parameter(0x0F);
TFT_Send_Parameter(0x3F);
TFT_Send_Parameter(0x3F);
TFT_Send_Parameter(0x0F);
}
In main task i'm configurating SPI and LCD and filling it up 1 color in hypercycle
SPI_Configuration();
TFT_Turn_On();
while (1)
{
if (i == 0)
{
TFT_Fill_All_Display(TFT_GET_COLOR(0, 0, 0));
}
else if (i == 1)
{
TFT_Fill_All_Display(TFT_GET_COLOR(255, 0, 0));
}
else if (i == 2)
{
TFT_Fill_All_Display(TFT_GET_COLOR(0, 255, 0));
}
else if (i == 3)
{
TFT_Fill_All_Display(TFT_GET_COLOR(0, 0, 255));
}
i == 3 ? i = 0 : i++;
}
Problem is what LCD is filling up in 1.6 secs. i.e. i've got 0.6 FPS. I don't know what's wrong (But SPI is fine, it's really configurated 60 MHz. I checked this out by my oscilloscope).
Problem exactly in my code because of some guys reached 10+ FPS on this displays on Ard*ino (Proof: https://www.youtube.com/watch?v=WapdjBnF7tQ&t=0s)
I'm stumped with this problem. Please, help me...
