Revision 0:cfba9bf82ab5, committed 2016-06-03

Comitter:

takeuchi

Date:

Fri Jun 03 01:43:36 2016 +0000

Commit message:

LED??????2??BME?????

Changed in this revision

diff -r 000000000000 -r cfba9bf82ab5 BME280.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/BME280.cpp	Fri Jun 03 01:43:36 2016 +0000
@@ -0,0 +1,192 @@
+/**
+ *  BME280 Combined humidity and pressure sensor library
+ *
+ *  @author  Toyomasa Watarai
+ *  @version 1.0
+ *  @date    06-April-2015
+ *
+ *  Library for "BME280 temperature, humidity and pressure sensor module" from Switch Science
+ *    https://www.switch-science.com/catalog/2236/
+ *
+ *  For more information about the BME280:
+ *    http://ae-bst.resource.bosch.com/media/products/dokumente/bme280/BST-BME280_DS001-10.pdf
+ */
+
+#include "mbed.h"
+#include "BME280.h"
+
+BME280::BME280(PinName sda, PinName scl, char slave_adr)
+    :
+    i2c_p(new I2C(sda, scl)), 
+    i2c(*i2c_p),
+    address(slave_adr),
+    t_fine(0)
+{
+    initialize();
+}
+
+BME280::BME280(I2C &i2c_obj, char slave_adr)
+    :
+    i2c_p(NULL), 
+    i2c(i2c_obj),
+    address(slave_adr),
+    t_fine(0)
+{
+    initialize();
+}
+
+BME280::~BME280()
+{
+    if (NULL != i2c_p)
+        delete  i2c_p;
+}
+    
+void BME280::initialize()
+{
+    char cmd[18];
+ 
+    cmd[0] = 0xf2; // ctrl_hum
+    cmd[1] = 0x01; // Humidity oversampling x1
+    i2c.write(address, cmd, 2);
+ 
+    cmd[0] = 0xf4; // ctrl_meas
+    cmd[1] = 0x27; // Temparature oversampling x1, Pressure oversampling x1, Normal mode
+    i2c.write(address, cmd, 2);
+ 
+    cmd[0] = 0xf5; // config
+    cmd[1] = 0xa0; // Standby 1000ms, Filter off
+    i2c.write(address, cmd, 2);
+ 
+    cmd[0] = 0x88; // read dig_T regs
+    i2c.write(address, cmd, 1);
+    i2c.read(address, cmd, 6);
+ 
+    dig_T1 = (cmd[1] << 8) | cmd[0];
+    dig_T2 = (cmd[3] << 8) | cmd[2];
+    dig_T3 = (cmd[5] << 8) | cmd[4];
+ 
+    DEBUG_PRINT("dig_T = 0x%x, 0x%x, 0x%x\n", dig_T1, dig_T2, dig_T3);
+ 
+    cmd[0] = 0x8E; // read dig_P regs
+    i2c.write(address, cmd, 1);
+    i2c.read(address, cmd, 18);
+ 
+    dig_P1 = (cmd[ 1] << 8) | cmd[ 0];
+    dig_P2 = (cmd[ 3] << 8) | cmd[ 2];
+    dig_P3 = (cmd[ 5] << 8) | cmd[ 4];
+    dig_P4 = (cmd[ 7] << 8) | cmd[ 6];
+    dig_P5 = (cmd[ 9] << 8) | cmd[ 8];
+    dig_P6 = (cmd[11] << 8) | cmd[10];
+    dig_P7 = (cmd[13] << 8) | cmd[12];
+    dig_P8 = (cmd[15] << 8) | cmd[14];
+    dig_P9 = (cmd[17] << 8) | cmd[16];
+ 
+    DEBUG_PRINT("dig_P = 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x\n", dig_P1, dig_P2, dig_P3, dig_P4, dig_P5, dig_P6, dig_P7, dig_P8, dig_P9);
+ 
+    cmd[0] = 0xA1; // read dig_H regs
+    i2c.write(address, cmd, 1);
+    i2c.read(address, cmd, 1);
+     cmd[1] = 0xE1; // read dig_H regs
+    i2c.write(address, &cmd[1], 1);
+    i2c.read(address, &cmd[1], 7);
+
+    dig_H1 = cmd[0];
+    dig_H2 = (cmd[2] << 8) | cmd[1];
+    dig_H3 = cmd[3];
+    dig_H4 = (cmd[4] << 4) | (cmd[5] & 0x0f);
+    dig_H5 = (cmd[6] << 4) | ((cmd[5]>>4) & 0x0f);
+    dig_H6 = cmd[7];
+ 
+    DEBUG_PRINT("dig_H = 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x\n", dig_H1, dig_H2, dig_H3, dig_H4, dig_H5, dig_H6);
+}
+ 
+float BME280::getTemperature()
+{
+    uint32_t temp_raw;
+    float tempf;
+    char cmd[4];
+ 
+    cmd[0] = 0xfa; // temp_msb
+    i2c.write(address, cmd, 1);
+    i2c.read(address, &cmd[1], 3);
+ 
+    temp_raw = (cmd[1] << 12) | (cmd[2] << 4) | (cmd[3] >> 4);
+ 
+    int32_t temp;
+ 
+    temp =
+        (((((temp_raw >> 3) - (dig_T1 << 1))) * dig_T2) >> 11) +
+        ((((((temp_raw >> 4) - dig_T1) * ((temp_raw >> 4) - dig_T1)) >> 12) * dig_T3) >> 14);
+ 
+    t_fine = temp;
+    temp = (temp * 5 + 128) >> 8;
+    tempf = (float)temp;
+ 
+    return (tempf/100.0f);
+}
+ 
+float BME280::getPressure()
+{
+    uint32_t press_raw;
+    float pressf;
+    char cmd[4];
+ 
+    cmd[0] = 0xf7; // press_msb
+    i2c.write(address, cmd, 1);
+    i2c.read(address, &cmd[1], 3);
+ 
+    press_raw = (cmd[1] << 12) | (cmd[2] << 4) | (cmd[3] >> 4);
+ 
+    int32_t var1, var2;
+    uint32_t press;
+ 
+    var1 = (t_fine >> 1) - 64000;
+    var2 = (((var1 >> 2) * (var1 >> 2)) >> 11) * dig_P6;
+    var2 = var2 + ((var1 * dig_P5) << 1);
+    var2 = (var2 >> 2) + (dig_P4 << 16);
+    var1 = (((dig_P3 * (((var1 >> 2)*(var1 >> 2)) >> 13)) >> 3) + ((dig_P2 * var1) >> 1)) >> 18;
+    var1 = ((32768 + var1) * dig_P1) >> 15;
+    if (var1 == 0) {
+        return 0;
+    }
+    press = (((1048576 - press_raw) - (var2 >> 12))) * 3125;
+    if(press < 0x80000000) {
+        press = (press << 1) / var1;
+    } else {
+        press = (press / var1) * 2;
+    }
+    var1 = ((int32_t)dig_P9 * ((int32_t)(((press >> 3) * (press >> 3)) >> 13))) >> 12;
+    var2 = (((int32_t)(press >> 2)) * (int32_t)dig_P8) >> 13;
+    press = (press + ((var1 + var2 + dig_P7) >> 4));
+ 
+    pressf = (float)press;
+    return (pressf/100.0f);
+}
+ 
+float BME280::getHumidity()
+{
+    uint32_t hum_raw;
+    float humf;
+    char cmd[4];
+ 
+    cmd[0] = 0xfd; // hum_msb
+    i2c.write(address, cmd, 1);
+    i2c.read(address, &cmd[1], 2);
+ 
+    hum_raw = (cmd[1] << 8) | cmd[2];
+ 
+    int32_t v_x1;
+ 
+    v_x1 = t_fine - 76800;
+    v_x1 =  (((((hum_raw << 14) -(((int32_t)dig_H4) << 20) - (((int32_t)dig_H5) * v_x1)) +
+               ((int32_t)16384)) >> 15) * (((((((v_x1 * (int32_t)dig_H6) >> 10) *
+                                            (((v_x1 * ((int32_t)dig_H3)) >> 11) + 32768)) >> 10) + 2097152) *
+                                            (int32_t)dig_H2 + 8192) >> 14));
+    v_x1 = (v_x1 - (((((v_x1 >> 15) * (v_x1 >> 15)) >> 7) * (int32_t)dig_H1) >> 4));
+    v_x1 = (v_x1 < 0 ? 0 : v_x1);
+    v_x1 = (v_x1 > 419430400 ? 419430400 : v_x1);
+ 
+    humf = (float)(v_x1 >> 12);
+ 
+    return (humf/1024.0f);
+}

diff -r 000000000000 -r cfba9bf82ab5 BME280.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/BME280.h	Fri Jun 03 01:43:36 2016 +0000
@@ -0,0 +1,101 @@
+/**
+ *  BME280 Combined humidity and pressure sensor library
+ *
+ *  @author  Toyomasa Watarai
+ *  @version 1.0
+ *  @date    06-April-2015
+ *
+ *  Library for "BME280 temperature, humidity and pressure sensor module" from Switch Science
+ *    https://www.switch-science.com/catalog/2236/
+ *
+ *  For more information about the BME280:
+ *    http://ae-bst.resource.bosch.com/media/products/dokumente/bme280/BST-BME280_DS001-10.pdf
+ */
+ 
+#ifndef MBED_BME280_H
+#define MBED_BME280_H
+
+#include "mbed.h"
+
+//#define _DEBUG
+#define DEFAULT_SLAVE_ADDRESS (0x76 << 1)
+
+#ifdef _DEBUG
+extern Serial pc;
+#define DEBUG_PRINT(...) pc.printf(__VA_ARGS__)
+#else
+#define DEBUG_PRINT(...)
+#endif
+
+ 
+/** BME280 class
+ *
+ *  BME280: A library to correct environmental data using Boshe BME280 device
+ *
+ *  BME280 is an environmental sensor
+ *  @endcode
+ */
+ 
+class BME280
+{
+public:
+
+    /** Create a BME280 instance
+     *  which is connected to specified I2C pins with specified address
+     *
+     * @param sda I2C-bus SDA pin
+     * @param scl I2C-bus SCL pin
+     * @param slave_adr (option) I2C-bus address (default: 0x76)
+     */
+    BME280(PinName sda, PinName sck, char slave_adr = DEFAULT_SLAVE_ADDRESS);
+
+    /** Create a BME280 instance
+     *  which is connected to specified I2C pins with specified address
+     *
+     * @param i2c_obj I2C object (instance)
+     * @param slave_adr (option) I2C-bus address (default: 0x76)
+     */
+    BME280(I2C &i2c_obj, char slave_adr = DEFAULT_SLAVE_ADDRESS);
+
+    /** Destructor of BME280
+     */
+    virtual ~BME280();
+
+    /** Initializa BME280 sensor
+     *
+     *  Configure sensor setting and read parameters for calibration
+     *
+     */
+    void initialize(void);
+
+    /** Read the current temperature value (degree Celsius) from BME280 sensor
+     *
+     */
+    float getTemperature(void);
+
+    /** Read the current pressure value (hectopascal)from BME280 sensor
+     *
+     */
+    float getPressure(void);
+
+    /** Read the current humidity value (humidity %) from BME280 sensor
+     *
+     */
+    float getHumidity(void);
+
+private:
+
+    I2C         *i2c_p;
+    I2C         &i2c;
+    char        address;
+    uint16_t    dig_T1;
+    int16_t     dig_T2, dig_T3;
+    uint16_t    dig_P1;
+    int16_t     dig_P2, dig_P3, dig_P4, dig_P5, dig_P6, dig_P7, dig_P8, dig_P9;
+    uint16_t    dig_H1, dig_H3;
+    int16_t     dig_H2, dig_H4, dig_H5, dig_H6;
+    int32_t     t_fine;
+
+};
+
+#endif // MBED_BME280_H

diff -r 000000000000 -r cfba9bf82ab5 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Jun 03 01:43:36 2016 +0000
@@ -0,0 +1,333 @@
+// LedMatrix  2mai Ondo,Situdo,Kiatu
+
+#include "mbed.h"
+#include "BME280.h"
+ 
+DigitalOut led(dp28);
+
+BME280 sensor1(dp5,dp27,0x76 << 1);
+
+// spi(mosi,miso,sck)
+SPI max72_spi(dp2, NC, dp6);
+DigitalOut load(dp14);//spi load
+
+// CPU       MT7219
+// dp1 mosi(Master In Salve Out) =>   DIN
+// dp2 miso(Master OutSlave)   =>   nc
+// dp6 sck (Serial Clock) =>   clk
+// dp14 =>(Slave Select) load
+
+int maxInUse = 2;    //change this variable to set how many MAX7219's you'll use
+ 
+// define max7219 registers
+#define max7219_reg_noop         0x00
+#define max7219_reg_digit0       0x01
+#define max7219_reg_digit1       0x02
+#define max7219_reg_digit2       0x03
+#define max7219_reg_digit3       0x04
+#define max7219_reg_digit4       0x05
+#define max7219_reg_digit5       0x06
+#define max7219_reg_digit6       0x07
+#define max7219_reg_digit7       0x08
+#define max7219_reg_decodeMode   0x09
+#define max7219_reg_intensity    0x0a
+#define max7219_reg_scanLimit    0x0b
+#define max7219_reg_shutdown     0x0c
+#define max7219_reg_displayTest  0x0f
+ 
+#define LOW 0
+#define HIGH 1
+#define MHZ 1000000
+#define ON 1
+#define OFF 0
+
+double p1,t1,h1,pp1;
+double hight,hosei;
+ 
+void maxSingle( int reg, int col) {
+//maxSingle is the "easy"  function to use for a
+//single max7219
+    load = LOW;            // begin
+    max72_spi.write(reg);  // specify register
+    max72_spi.write(col);  // put data
+    load = HIGH;           // make sure data is loaded (on rising edge of LOAD/CS)
+}
+ 
+void maxAll (int reg, int col) {    // initialize  all  MAX7219's in the system
+    load = LOW;                    // begin
+    for ( int c=1; c<= maxInUse; c++) {
+        max72_spi.write(reg);  // specify register
+        max72_spi.write(col);  // put data
+    }
+    load = HIGH;
+}
+ 
+void maxOne(int maxNr, int reg, int col) {
+//maxOne is for adressing different MAX7219's,
+//while having a couple of them cascaded
+    int c = 0;
+    load = LOW;
+ 
+    for ( c = maxInUse; c >= maxNr; c--) {
+        max72_spi.write(0);  // no-op
+        max72_spi.write(0);  // no-op
+    }
+ 
+    max72_spi.write(reg);  // specify register
+    max72_spi.write(col);  // put data
+ 
+    for ( c=maxNr-1; c >= 1; c--) {
+        max72_spi.write(0);  // no-op
+        max72_spi.write(0);  // no-op
+    }
+    load = HIGH;
+}
+  
+void setup () {
+    // initiation of the max 7219
+    // SPI setup: 8 bits, mode 0
+    max72_spi.format(8, 0);
+    
+    // going by the datasheet, min clk is 100ns so theoretically 10MHz should work...
+    // max72_spi.frequency(10*MHZ);
+    
+    maxAll(max7219_reg_scanLimit, 0x07);
+    maxAll(max7219_reg_decodeMode, 0x00);  // using an led matrix (not digits)
+    maxAll(max7219_reg_shutdown, 0x01);    // not in shutdown mode
+    maxAll(max7219_reg_displayTest, 0x00); // no display test
+    for (int e=1; e<=8; e++) {    // empty registers, turn all LEDs off
+        maxAll(e,0);
+    }
+    maxAll(max7219_reg_intensity, 0x0f & 0x0f);    // the first 0x0f is the value you can set
+    // range: 0x00 to 0x0f
+} 
+ 
+void get_sensor1(void){
+    t1=sensor1.getTemperature();
+    if(t1 > 85.0){
+         t1=t1-409.0-1;
+    }
+    h1=sensor1.getHumidity();
+    pp1=sensor1.getPressure(); 
+    pp1=pp1+int(700/9);
+} 
+ 
+int main(void) {
+
+ const uint64_t moji_font[] = {// bold font , kagami moji font
+    0x3c66666e76663c00,//0~9
+    0x7e1818181c181800,
+    0x7e060c3060663c00,
+    0x3c66603860663c00,
+    0x30307e3234383000,
+    0x3c6660603e067e00,
+    0x3c66663e06663c00,
+    0x1818183030667e00,
+    0x3c66663c66663c00,
+    0x3c66607c66663c00,
+    0x6666663e06060600,// 10 h
+    0x06063e66663e0000,// 11 p
+    0x1818000000000000,// 12 .
+    0x30480848340a0a04, // 13 dc
+    0x1010157555770101,// 14 hp
+    0x18187e7e18180000,// 15 +
+    0x00007e7e00000000,// 16 -
+    0x082a1c771c2a0800, //17 asuta1
+    0x007e424a52427e00, // 18 sikaku2
+    0x0000000000000000, // 19 blank
+    0x60660c1830660600, // 20 %
+    0x4242665a5a7e1800, // 21 uchi
+    0x220424692e2a2c00  // 22 soto
+    };
+    
+/*
+    
+ const uint64_t moji_font[]={   
+  0x006e333e301e0000,//a
+  0x003b66663e060607,//b
+  0x001e3303331e0000,//c
+  0x006e33333e303038,//d
+  0x001e033f331e0000,//e
+  0x000f06060f06361c,//f
+  0x1f303e33336e0000,//g
+  0x006766666e360607,//h
+  0x001e0c0c0c0e000c,//i
+  0x1e33333030300030,//j
+  0x0067361e36660607,//k
+  0x001e0c0c0c0c0c0e,//l
+  0x00636b7f7f330000,//m
+  0x00333333331f0000,//n
+  0x001e3333331e0000,//o
+  0x0f063e66663b0000,//p
+  0x78303e33336e0000,//q
+  0x000f06666e3b0000,//r
+  0x001f301e033e0000,//s
+  0x00182c0c0c3e0c08,//t
+  0x006e333333330000,//u
+  0x000c1e3333330000,//v
+  0x00367f7f6b630000,//w
+  0x0063361c36630000,//x
+  0x1f303e3333330000,//y
+  0x003f260c193f0000 //z
+ };
+
+*/
+
+//    // Jissainiha konoyouni mieru
+//     maxSingle(1,1);                        |-| -------+
+//     maxSingle(2,2);                        |-| ------+-
+//     maxSingle(3,4);                        |-| -----+--
+//     maxSingle(4,8);                        |-| ----+---
+//     maxSingle(5,16);                       |-| ---+----
+//     maxSingle(6,32);                       |-| --+-----
+//     maxSingle(7,64);                       |-| -+------
+//     maxSingle(8,128);                      |-| +-------
+  
+    int i,j,k;
+    uint8_t bitsum[22][9],bit1gyou,bitline[250];
+    uint64_t moji1,load_image[22];
+    long hpascal,ttemp,sitemp;
+    int hpketa[4],tpketa[3],siketa[3];
+    int gdot[]={128,64,32,16,8,4,2,1};
+    int gbit[16],gbit_s[32];
+    long wtime=0;
+    long hpdata[16],hprange,hpmax,hpmin;
+    long hpcenter;
+    int dotdata,fstloop,fshuuki;
+    double hpscope;
+    double gctrim=0.0;
+ 
+    setup();
+    
+    wait(0.1);
+    get_sensor1();
+    
+    hpascal=long(pp1);
+    hpmin=hpascal;
+    hpmax=hpascal;
+    hpscope=1;
+    hprange=0;
+    for(i=0;i<16;i++){
+        hpdata[i]=hpascal-3;
+    }
+    
+    while(1){
+       
+      get_sensor1();
+          
+      hpascal=long(pp1);
+      ttemp=long(t1*10); // seisuuchi henkan
+      sitemp=long(h1);
+ 
+      hpketa[0]=int(hpascal/1000);hpascal=hpascal-hpketa[0]*1000;
+      hpketa[1]=int(hpascal/100); hpascal=hpascal-hpketa[1]*100;
+      hpketa[2]=int(hpascal/10);  hpascal=hpascal-hpketa[2]*10;
+      hpketa[3]=hpascal;
+      
+      tpketa[0]=int(ttemp/100);ttemp=ttemp-tpketa[0]*100;// jyuu noketa
+      tpketa[1]=int(ttemp/10);ttemp=ttemp-tpketa[1]*10;// ichi no keta
+      tpketa[2]=int(ttemp); // shousuutenika no keta
+      
+      siketa[0]=int(sitemp/100);sitemp=sitemp-siketa[0]*100;
+      siketa[1]=int(sitemp/10);sitemp=sitemp-siketa[1]*10;
+      siketa[2]=int(sitemp);
+      
+      load_image[0]=moji_font[19]; //blank        
+      load_image[1]=moji_font[19]; //blank        
+      load_image[2]=moji_font[17]; //asuta       
+      for(i=3;i<=6;i++){// kiatu 4keta suuji [3 ~ 6]
+            for(j=0;j<=9;j++){
+                if(hpketa[i-3] == j){
+                    load_image[i]=moji_font[j];
+                }
+            }
+      }
+      load_image[7]=moji_font[14];//hp
+      load_image[8]=moji_font[19]; //blank       
+      
+      if(t1 >=0){
+          load_image[9]=moji_font[15];//+
+      }
+      else {
+          load_image[9]=moji_font[16];// -
+      }                
+
+      for(i=0;i<=1;i++){// kion seisuuketa
+          for(j=0;j<=9;j++){
+              if(tpketa[i] == j){
+                  load_image[i+10]=moji_font[j];
+              }
+          }
+      }
+      load_image[12]=moji_font[12];// .
+      for(j=0;j<=9;j++){// kion shousuu keta
+              if(tpketa[2] == j){
+                  load_image[13]=moji_font[j];
+              }
+      }
+      load_image[14]=moji_font[13]; //dc 
+
+      load_image[15]=moji_font[19];//blank
+      
+       for(i=0;i<=2;i++){ // situdo 3 keta
+            for(j=0;j<=9;j++){
+                if(siketa[i] == j){
+                    load_image[i+16]=moji_font[j];
+                }
+            }
+       }     
+      
+       load_image[19]=moji_font[20]; // %
+       load_image[20]=moji_font[19];//blank
+       load_image[21]=moji_font[19];//blank
+       
+       for(i=0;i<22;i++){ // 0~21 22 moji
+            moji1=load_image[i];
+            for(j=0;j<8;j++){// bitsum[1]
+                bitsum[i][j]=0;
+            }//j
+            for(j=0;j<8;j++){
+                bit1gyou=moji1 & 0xff;
+                for(k=0;k<8;k++){//  kagami moji no font
+                //for(k=8;k>=1;k--){ // futuu no font
+                    bitsum[i][k]=bitsum[i][k]+(bit1gyou & 0x01)*pow((double)2,(double)(j));
+                    bit1gyou=bit1gyou >> 1;
+                }//k
+                moji1=moji1 >> 8;
+            }//j
+        }// i
+        
+        k=0;
+        for(i=0;i<22;i++){
+            for(j=0;j<8;j++){
+                bitline[k]=bitsum[i][j];
+                k++;
+            }
+        }
+        
+        for(i=0;i<=(22*8-1-16);i++){// bitline hyouji
+            maxOne(1,1,bitline[i]);
+            maxOne(1,2,bitline[i+1]);
+            maxOne(1,3,bitline[i+2]);
+            maxOne(1,4,bitline[i+3]);
+            maxOne(1,5,bitline[i+4]);
+            maxOne(1,6,bitline[i+5]);
+            maxOne(1,7,bitline[i+6]);
+            maxOne(1,8,bitline[i+7]);
+            maxOne(2,1,bitline[i+8]);
+            maxOne(2,2,bitline[i+9]);
+            maxOne(2,3,bitline[i+10]);
+            maxOne(2,4,bitline[i+11]);
+            maxOne(2,5,bitline[i+12]);
+            maxOne(2,6,bitline[i+13]);
+            maxOne(2,7,bitline[i+14]);
+            maxOne(2,8,bitline[i+15]);
+
+            wait(0.1);
+        }                               
+        wait(0.1);
+                           
+    }//while
+}//main
+
+

diff -r 000000000000 -r cfba9bf82ab5 mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Fri Jun 03 01:43:36 2016 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/031413cf7a89
\ No newline at end of file