# HG changeset patch
# User David Douard <david.douard@logilab.fr>
# Date 1468955859 -7200
# Node ID 3021fc79cc3be54081dc8791f9ee5c5a298a586b
# Parent  f3377957d8c0978ea3c49b9b7444b63088d12a0b
kinf of working prototype using a ILI9341 based TFT

diff -r f3377957d8c0 -r 3021fc79cc3b platformio.ini
--- a/platformio.ini	Thu Jul 07 20:12:49 2016 +0200
+++ b/platformio.ini	Tue Jul 19 21:17:39 2016 +0200
@@ -21,3 +21,12 @@
 platform = ststm32
 framework = mbed
 board = nucleo_f446re
+build_flags = -D UNIG_SPI8
+upload_port = /media/sdb
+
+[env:nucleo_f031k6]
+platform = ststm32
+framework = mbed
+board = nucleo_f031k6
+build_flags = -D UNIG_SPI8
+upload_port = /media/sdb
\ No newline at end of file
diff -r f3377957d8c0 -r 3021fc79cc3b src/main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/main.cpp	Tue Jul 19 21:17:39 2016 +0200
@@ -0,0 +1,224 @@
+#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();
+}