Tue, 19 Jul 2016 21:17:39 +0200
kinf of working prototype using a ILI9341 based TFT
#include "stdio.h" #include "mbed.h" #include "string" #include "Arial12x12.h" #include "Arial28x28.h" //#include "Arial24x23.h" //#include "Terminal6x8.h" //#include "Arial43x48_numb.h" #include "BufferedSerial.h" #include "SPI8.h" #include "ILI9341.h" Serial pc(USBTX, USBRX); BufferedSerial hp(PA_0, PA_1, 32); // serial4 ILI9341 tft(SPI_8, 24000000, PA_7, PA_6, PA_5, PA_4, PB_6, PC_7, "myLCD"); // Spi 8bit, 24MHz, mosi, miso, sclk, cs, reset, dc //ILI9341 tft(SPI_8, 24000000, PA_7, PA_6, PA_5, PA_4, PB_6, PB_5, "myLCD"); #define MAX_BUFF 13 uint8_t curchar; uint8_t cmd; uint8_t nchars; char buffer[MAX_BUFF+1]; typedef struct _DSP { uint8_t cmd; uint16_t color; uint16_t bgcolor; uint8_t y0; uint8_t fmt; // 0=>ascii, 1=>hex, 2=>bits uint8_t maxsize; const unsigned char* font; char buffer[MAX_BUFF+1]; } DSP; static DSP table[] = { { 0x00, Yellow, Red, 5, 0, MAX_BUFF, Arial28x28}, { 0x0C, Red, Blue, 40, 0, 3, Arial28x28}, { 0x01, Blue, Yellow, 75, 1, MAX_BUFF, Arial12x12}, { 0x02, Blue, Yellow, 110, 1, MAX_BUFF, Arial12x12}, { 0x0A, Blue, Yellow, 145, 2, 4, Arial12x12}, { 0xFF, Red, Black, 210, 0, MAX_BUFF, Arial12x12}, }; #define DEBUG #ifdef DEBUG #define DBGPIN PC_0 DigitalOut dbgpin(DBGPIN); inline void DebugPulse(uint8_t count=1) { while (count--) { dbgpin = 1; dbgpin = 0; } } #else inline void DebugPulse(uint8_t count=1) {} #endif void setup() { // init the LCD tft.set_orientation(3); pc.baud (115200); pc.printf("\n\nSystem Core Clock = %.3f MHZ\r\n", (float)SystemCoreClock/1000000); hp.baud(187500); // myLCD.set_font((unsigned char*) Terminal6x8); // myLCD.claim(stdout); // send stdout to the LCD display // myLCD.claim(stderr); // send stderr to the LCD display tft.background(Black); // set background to black tft.cls(); cmd = 0xFF; curchar = 0; nchars = 0; } void go_msg() { tft.set_font((unsigned char*) Arial12x12); tft.locate(0, 210); } void show(uint8_t cmd, char *txt, uint8_t nchar=0) { uint8_t i, len; uint16_t bgcolor, fgcolor; char *oldv; len = MAX_BUFF; for (i=0; i<sizeof(table)/sizeof(table[0]); ++i) { if (table[i].cmd == cmd) { bgcolor = table[i].bgcolor; fgcolor = table[i].color; tft.background(bgcolor); tft.foreground(fgcolor); tft.locate(0, table[i].y0); tft.set_font((unsigned char*) table[i].font); break; } } switch (table[i].fmt) { case 0: //ascii tft.printf(txt); for (uint8_t j=nchar; j<table[i].maxsize; j++) tft.printf(" "); break; case 1: // hex for (uint8_t j=0; j<nchar; j++) tft.printf("%02X ", txt[j]); for (uint8_t j=nchar; j<table[i].maxsize; j++) tft.printf(" "); break; case 2: // binary for (uint8_t j=0; j<max(nchar, table[i].maxsize) ; j++) { //tft.setCursor(x0+w*i, y0+10); for (uint8_t k=0; k<8; k++) { if (txt[j] & (1 << (7-k))) tft.foreground(fgcolor); else tft.foreground(bgcolor); tft.printf("%d", (8-k)); } } break; } } void loop() { // run over and over if (hp.readable()) { uint8_t val = hp.getc(); DebugPulse(); // 0xFF: idle // 0xFE: frame finished // 0x66: Start of transmission received if (cmd == 0xFF) { if ((val == 0x66) || (val == 0x99)) { cmd = val; } else if ((val == 0x00) || (val == 0x55)){ // probably an ACK for a keypad related event } else { // display "junk" byte //DebugPulse(); go_msg(); tft.printf("%02X:> %02x", cmd, val); } } else if (cmd == 0xFE ) { if ((val == 0x66) || (val == 0x99)) { cmd = val; } else if (val == 0x55) { cmd = 0xFF; } else if (val == 0x00){ // probably an ACK for a keypad related event } else { // display "junk" byte //DebugPulse(); go_msg(); tft.printf("%02X=> %02x", cmd, val); } } else if (cmd == 0x66) { // waiting for the display command if ((val == 0x0C) || (val == 0x00) || val == 0x01 || val == 0x02 || val == 0x0A) { cmd = val; nchars = 0; } else { cmd = 0xFE; // display unknown cmd byte //DebugPulse(); go_msg(); tft.printf("%02X-> %02x", cmd, val); } } else if (cmd == 0x99) { // waiting for a 0x00, it's the DP that sent a keypress event if (val != 0x00) { go_msg(); tft.printf("%02X kp %02X", cmd, val); } cmd =0xFF; } else if (nchars == 0) { // waiting for the number of chars to display if (val>MAX_BUFF) { // display warning //dsp(); //tft << cmd << " got len " << val; //DebugPulse(); go_msg(); tft.printf("%02X len %d", cmd, val); cmd = 0xFE; // weird } else { nchars = val; curchar = 0; } } else { // a character to display buffer[curchar] = val; curchar++; if (curchar == nchars) { buffer[curchar] = 0x00; show(cmd, buffer, nchars); nchars = 0; curchar = 0; cmd = 0xFE; } } } } int main() { setup(); while(1) loop(); }