FT232H and TM1638

FT232H_TM1638.ipynb

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 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Import libftd2xx"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [],
   "source": [
    ":dep libftd2xx"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [],
   "source": [
    "use libftd2xx::{Ftdi, FtdiCommon, BitMode};\n",
    "use std::time::Duration;\n",
    "use std:thread"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## open FTDI FT232H device (serial number)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Device information: DeviceInfo { port_open: true, speed: None, device_type: FT232H, vendor_id: 0x0403, product_id: 0x6014, serial_number: FTU85S8E, description: UM232H }\n"
     ]
    }
   ],
   "source": [
    "let mut ft = Ftdi::new()?;\n",
    "//let mut ft = Ftdi::with_serial_number(\"MLTS91A\")?; //use serial #\n",
    "let info = ft.device_info()?;\n",
    "println!(\"Device information: {:?}\", info);"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### **defered**"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "ft.close()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## I2C functions"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [],
   "source": [
    "const SCK:u8 = 0x01u8; //AD0\n",
    "const MOSI:u8 = 0x02u8; //AD1 MOSI and AD2 MISO\n",
    "const CS :u8 = 0x08u8; //AD3\n",
    "\n",
    "pub trait TM1638: FtdiCommon {\n",
    "    fn init_spi(&mut self){\n",
    "        self.set_bit_mode(0, BitMode::Mpsse);\n",
    "        self.write(&[0x8A, 0x86,59,0]); //1MHz\n",
    "        self.write(&[0x80,CS, CS+MOSI+SCK]);\n",
    "    }\n",
    "    \n",
    "    fn start_spi(&mut self){\n",
    "       self.write(&[0x80,0, CS+MOSI+SCK]);\n",
    "    }\n",
    "    fn end_spi(&mut self){\n",
    "      self.write(&[0x80,CS, CS+MOSI+SCK]);  \n",
    "    }\n",
    "    fn send_byte(&mut self, byte_to_send: u8){                    \n",
    "        self.write(&[0x19u8,0,0,byte_to_send]); //-ve single byte out; LSB first   \n",
    "        \n",
    "    }\n",
    "    fn read_keypress(&mut self) -> [u8;4]{        \n",
    "        self.start_spi();\n",
    "        self.send_byte(0x42);\n",
    "        self.write(&[0x80, 0, SCK+CS, 0x28,3,0,0x87]);//release MOSI; ready 4-byte LSB first; send back   \n",
    "        self.end_spi();\n",
    "        let mut buf = [0u8;4];\n",
    "        self.read(&mut buf);\n",
    "                \n",
    "        buf\n",
    "    }\n",
    "    \n",
    "}\n",
    "\n",
    "impl TM1638 for Ftdi {}"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Initial SPI"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "()"
      ]
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     "execution_count": 7,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "ft.init_spi()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Turn TM1637 display ON/OFF"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [],
   "source": [
    "ft.start_spi(); ft.send_byte(0x8f); ft.end_spi();"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "ft.start_spi(); ft.send_byte(0x80); ft.end_spi();"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Display digits"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [],
   "source": [
    "const digits:[u8;10] = [0x3f,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F];"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "enter data mode"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [],
   "source": [
    "ft.start_spi(); ft.send_byte(0x40); ft.end_spi();"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "display digits"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "()"
      ]
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     "execution_count": 11,
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     "output_type": "execute_result"
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   ],
   "source": [
    "ft.start_spi();\n",
    "ft.send_byte(0xc0);\n",
    "for _ in 0..8 {\n",
    "    ft.send_byte(digits[9]);\n",
    "    ft.send_byte(0);\n",
    "}\n",
    "ft.end_spi()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "read keypress"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "ft.read_keypress()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Example"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "()"
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     "execution_count": 23,
     "metadata": {},
     "output_type": "execute_result"
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   ],
   "source": [
    "// init\n",
    "ft.start_spi();\n",
    "ft.send_byte(0xc0);\n",
    "let mut d = [0;8];\n",
    "for i in 0..8 {\n",
    "    ft.send_byte(digits[d[i]]);\n",
    "    ft.send_byte(0);\n",
    "}\n",
    "ft.end_spi();\n",
    "\n",
    "// keyscan\n",
    "for _ in 0..100 {\n",
    "   let k = ft.read_keypress();\n",
    "//    for i in 0..4{\n",
    "//        println!(\"{}\", k[i]);\n",
    "//     } \n",
    "   for i in 0..4{            \n",
    "       if k[i]&0x01==0x01{\n",
    "           d[i] = d[i]+1;\n",
    "        }                \n",
    "    }\n",
    "    for i in 4..8{\n",
    "        if k[i-4]&0x10==0x10{\n",
    "            d[i] = d[i]+1;\n",
    "        }       \n",
    "    }\n",
    "    ft.start_spi();\n",
    "    ft.send_byte(0xc0);\n",
    "    for i in 0..8 {\n",
    "        ft.send_byte(digits[d[i]%10]);\n",
    "        ft.send_byte(0);\n",
    "    }\n",
    "    ft.end_spi();\n",
    "    thread::sleep_ms(180);\n",
    "\n",
    "}"
   ]
  }
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