Fork of SPI18TFT: Ported to Seeeduino-Arch-Pro and tested with SainSmart 1.8 ST7735R TFT
Fork of SPI18TFT by
This port of the SPI18TFT demo program was to see if I could get a: SainSmart 1.8 ST7735R TFT LCD module to work with a Seeeduino-Arch-Pro mbed platform.
The gotcha is that this LCD module does not have an MSIO pin, and the MSIO pin on the Arch-Pro must be left disconnected.
main.cpp
- Committer:
- DevonHeron
- Date:
- 2014-12-21
- Revision:
- 1:71477b6fe9a4
- Parent:
- 0:309c546f048d
File content as of revision 1:71477b6fe9a4:
/* *********************************************** This works great on the Seeeduino-Arch-Pro using the SainSmart 1.8" ST7735R TFT provided the wiring for the SPI bus is correct... the MSIO pin can not be used for RS... it must be disconnected *********************************************** */ #include "stdio.h" #include "stdlib.h" #include "math.h" #include "mbed.h" #include "ST7735_TFT.h" #include "string" #include "Arial12x12.h" #include "Arial24x23.h" #include "Arial28x28.h" #define NUMBER_OF_STARS 300 #define SCREEN_WIDTH 128 #define SCREEN_HEIGHT 160 /*star struct*/ typedef struct { float xpos, ypos; short zpos, speed; unsigned int color; } STAR; static STAR stars[NUMBER_OF_STARS]; void init_star(STAR* star, int i) { /* randomly init stars, generate them around the center of the screen */ star->xpos = -10.0 + (20.0 * (rand()/(RAND_MAX+1.0))); star->ypos = -10.0 + (20.0 * (rand()/(RAND_MAX+1.0))); star->xpos *= 3072.0; /*change viewpoint */ star->ypos *= 3072.0; star->zpos = i; star->speed = 2 + (int)(2.0 * (rand()/(RAND_MAX+1.0))); star->color = i*Cyan >> 2; /*the closer to the viewer the brighter*/ } void init() { int i; for (i = 0; i < NUMBER_OF_STARS; i++) { init_star(stars + i, i + 1); } } // the TFT is connected to SPI pin 5-7, CS is p8, RS is p11, reset is p15 // ST7735_TFT TFT(p5, p6, p7, p8, p11, p15,"TFT"); // mosi, miso, sclk, cs, rs, reset ST7735_TFT TFT(P0_9,P0_8,P0_7,P0_6,P0_0,P2_13,"TFT"); // // Pins on the display PIN on ARCH_Pro // VCC -- 3.3V // GND -- GND // SCL -- P0_7 // SDA -- P0_9 // RS /DC -- P0_0 // RES -- P2_13 // CS -- P0_6 // -- P0_8 -- connection not used on display (sould be MISO) Serial pc(USBTX, USBRX); // tx, rx Timer t; extern unsigned char p1[]; // the mbed logo int main() { printf("Getting Started Now\n\r"); unsigned int centerx, centery; int i, j, tempx, tempy; init(); TFT.set_orientation(1); centerx = TFT.width() >> 1; centery = TFT.height() >> 1; TFT.claim(stdout); // send stdout to the TFT display TFT.claim(stderr); // send stderr to the TFT display TFT.background(Black); // set background to black TFT.foreground(White); // set chars to white TFT.cls(); TFT.set_font((unsigned char*) Arial12x12); // select the font TFT.printf("Getting Started\nLine two\nLine three\r\nEnd"); pc.printf("Getting Started\nLine two\nLine three\r\nEnd"); t.start(); wait_ms(5000); ////// demo start printf("\n\n\n\n\nStart Time %f s\n", t.read()); TFT.set_font((unsigned char*) Arial24x23); // select the font for ( j = 0 ; j < 10000; j++ ) { /* move and draw stars */ for (i = 0; i < NUMBER_OF_STARS; i++) { tempx = (stars[i].xpos / stars[i].zpos) + centerx; tempy = (stars[i].ypos / stars[i].zpos) + centery; TFT.pixel(tempx,tempy,Black); stars[i].zpos -= stars[i].speed; if (stars[i].zpos <= 0) { init_star(stars + i, i + 1); } //compute 3D position tempx = (stars[i].xpos / stars[i].zpos) + centerx; tempy = (stars[i].ypos / stars[i].zpos) + centery; if (tempx < 0 || tempx > TFT.width() - 1 || tempy < 0 || tempy > TFT.height() - 1) //check if a star leaves the screen { init_star(stars + i, i + 1); continue; } TFT.pixel(tempx,tempy,stars[i].color); } TFT.Bitmap(centerx-60,centery-19,120,38,p1); } ///// demo stop t.stop(); TFT.locate(0,10); TFT.set_font((unsigned char*) Arial12x12); // select the font printf("Time %f s\n", t.read()); }