Derek Cheung
Read NTP time from Ethernet and drive six 7-segment LEDs using a MAX7221 to show time, date, month, week, year etc....
Dependencies: NTPClient_NetServices mbed
main.cpp
- Committer:
- cheungderek
- Date:
- 2011-06-22
- Revision:
- 0:e083abcfe7a8
File content as of revision 0:e083abcfe7a8:
/*************************************************************
Author: Derek Cheung
Email: cheungderek@hotmail.com
Web: http://clients.teksavvy.com/~cheungderek
Date: 21 Jun 2011
Note: Just some testing but working code
Read NTP time and date to show Time, Date, Month,
Year automatically using MAX7221 to drive 6 LEDs
See my home page for details
*************************************************************/
#include "mbed.h"
#include "EthernetNetIf.h"
#include "HTTPClient.h"
#include "TextLCD.h"
#include "NTPClient.h"
#include "Max7221.h"
#define BLINK_PERIOD 1.8 // LED on period (Initial data)
#define END_PERIOD 0.0001 // Finish period
DigitalOut myled1(LED1); // Assign LED output port LED1 to LED4
DigitalOut myled2(LED2);
DigitalOut myled3(LED3);
DigitalOut myled4(LED4);
TextLCD lcd(p15, p16, p17, p26, p25, p24, p23, 16, 2); // rs,rw,e,d0,d1,d2,d3,16char's x 2 lines
SPI max7221_spi(p5, p6, p7, "max7221"); // mosi, miso, sclk
DigitalOut max7221_cs(p8);
Serial pc(USBTX, USBRX); // tx, rx
unsigned int dec2bcd(unsigned int dec);
void max7221_control(unsigned control);
void display_weekOfDay_month(struct tm *tm_ptr);
void display_day_year(struct tm *tm_ptr);
/*
#include "USBHost.h"
#include "Utils.h"
#include "FATFileSystem.h"
void TestShell();
*/
EthernetNetIf eth;
int main() {
float tim;
char buf[40];
struct tm *tm_ptr;
unsigned int tmp_int;
char *test_ptr;
time_t ctTime;
NTPClient ntp;
// Setup the spi for 16 bit data, sample at falling edge clcok at 1MHz
max7221_spi.format(16,0);
max7221_spi.frequency(1000000);
// shutdown operation
// max7221_spi.write(0x0C00);
// turn on all display
max7221_control(0x0F01);
// set normal operation
max7221_control(0x0F00);
// normal operation
max7221_control(0x0C01);
// sacn 6 LED
max7221_control(0x0B05);
// BCD mode
max7221_control(0x09FF);
// full intensity - Derek
max7221_control(0x0A0F);
// testing the char display on the LEDs
/*
tm_ptr = localtime(&ctTime);
tm_ptr->tm_mon=1;
tm_ptr->tm_mday = 0;
display_weekOfDay_month(tm_ptr);
tm_ptr->tm_mon=2;
tm_ptr->tm_mday = 1;
display_weekOfDay_month(tm_ptr);
tm_ptr->tm_mon=3;
tm_ptr->tm_mday = 2;
display_weekOfDay_month(tm_ptr);
tm_ptr->tm_mon=4;
tm_ptr->tm_mday = 3;
display_weekOfDay_month(tm_ptr);
tm_ptr->tm_mon=5;
tm_ptr->tm_mday = 4;
display_weekOfDay_month(tm_ptr);
tm_ptr->tm_mon=6;
tm_ptr->tm_mday = 5;
display_weekOfDay_month(tm_ptr);
tm_ptr->tm_mon=7;
tm_ptr->tm_mday = 6;
display_weekOfDay_month(tm_ptr);
tm_ptr->tm_mon=8;
display_weekOfDay_month(tm_ptr);
tm_ptr->tm_mon=9;
display_weekOfDay_month(tm_ptr);
tm_ptr->tm_mon=10;
display_weekOfDay_month(tm_ptr);
tm_ptr->tm_mon=11;
display_weekOfDay_month(tm_ptr);
tm_ptr->tm_mon=12;
display_weekOfDay_month(tm_ptr);
*/
// BCD mode
// max7221_control(0x09FF);
tim = BLINK_PERIOD;
lcd.cls();
lcd.locate(0, 0);
// 0 1
// lcd.printf("1234567890123456");
// lcd.locate(0, 1);
// lcd.printf("Derek Cheung v2");
// If you have implemented the "Windows USB Serial Port Driver", you can use follows.
// http://mbed.org/projects/handbook/wiki/WindowsSerialConfiguration
// printf("\r\n Derek Cheung Twitter Device Control - Setting up...\r\n");
EthernetErr ethErr = eth.setup();
if (ethErr) {
printf("Error %d in setup.\n", ethErr);
lcd.locate(0, 1);
lcd.printf("Network Failed ");
}
printf("\r\n Network Connection Setup OK\r\n");
HTTPClient twitter;
HTTPMap msg;
msg["status"] = "Twitter Control logon successfully"; //A good example of Key/Value pair use with Web APIs
twitter.basicAuth("cheungderek", "34563456"); //We use basic authentication, replace with you account's parameters
//No need to retieve data sent back by the server
HTTPResult r = twitter.post("http://api.supertweet.net/1/statuses/update.xml", msg, NULL);
if ( r == HTTP_OK ) {
printf("Tweet sent with success!\n");
} else {
printf("Problem during tweeting, return code %d\n", r);
}
lcd.cls();
unsigned short tmp_left_led_digit, tmp_right_led_digit;
int blink_value = 3;
Host server(IpAddr(), 123, "0.uk.pool.ntp.org");
ntp.setTime(server);
int resyncNtpServerTimer = 0;
int mDayDisplayTimer = 0;
int monthDisplayTimer = 0;
HTTPText txt;
while (1) {
/* for (tim =BLINK_PERIOD; tim >= END_PERIOD; tim /= 3) {
myled1 = 1;
wait(tim);
myled1 = 0;
myled2 = 1;
wait(tim);
myled2 = 0;
myled3 = 1;
wait(tim);
myled3 = 0;
myled4 = 1;
wait(tim);
myled4 = 0;
}
*/
/*
printf("\r\n trying to get a tweet \r\n");
twitter.get("http://api.supertweet.net/1/statuses/update.xml", &txt); //Blocking
printf("\r\n HTTP data %s \r\n", txt);
*/
tmp_left_led_digit = 0;
tmp_right_led_digit = 0;
// sprintf(buf,"loop # = %d", count);
ctTime = time(NULL) - 14400; // EST is 4 hours behind UTC
// set_time(ctTime); // set the RTC clock)
// printf("%d - RTC time is (UTC): %s \r \n", n++, ctime(&ctTime));
tm_ptr = localtime(&ctTime);
strftime(buf, 32, "%a %b %d %Y ", localtime(&ctTime));
lcd.locate(0,0); // 1st line
lcd.printf(buf);
blink_value++;
// Display Seconds on the LED1 and LED2
tmp_int = dec2bcd(tm_ptr->tm_sec);
// re-sync the NTP clock to RTC every 2 minutes / hours
resyncNtpServerTimer++;
if (resyncNtpServerTimer == 100000) {
lcd.locate(0, 1);
lcd.printf("NTP Server Sync ");
wait(1);
// ethErr = eth.setup();
if (ethErr) {
printf("Error %d in setup.\n", ethErr);
lcd.locate(0, 1);
lcd.printf("Network Failed ");
} else {
printf("\r\nNetwork Connection Setup OK\r\n");
// backup the time in case ntp server fails
ctTime = time(NULL);
if (ntp.setTime(server) != 0) {
lcd.locate(0,1);
lcd.printf("NTP Sync Failed ");
set_time(ctTime);
}
}
wait(1);
resyncNtpServerTimer = 0;
}
// lcd.locate(0,1);
// lcd.printf(" ");
mDayDisplayTimer++;
if (mDayDisplayTimer == 1200) {
display_day_year(tm_ptr);
display_weekOfDay_month(tm_ptr);
mDayDisplayTimer = 0;
}
tmp_left_led_digit = (unsigned short) tmp_int >> 4;
tmp_right_led_digit = (unsigned short) tmp_int & 0x000F;
max7221_control(LED_DIGIT1 | tmp_right_led_digit);
max7221_control(LED_DIGIT2 | tmp_left_led_digit);
// Display Minutes on the LED3 and LED4
tmp_int = dec2bcd(tm_ptr->tm_min);
tmp_left_led_digit = (unsigned short) tmp_int >> 4;
tmp_right_led_digit = (unsigned short) tmp_int & 0x000F;
max7221_control(LED_DIGIT3 | tmp_right_led_digit | 0x0080);
/*
if ((blink_value % 4) == 0)
max7221_control(LED_DIGIT3 | tmp_right_led_digit | 0x0080);
else
max7221_control(LED_DIGIT3 | tmp_right_led_digit & 0xFF7F);
*/
max7221_control(LED_DIGIT4 | tmp_left_led_digit);
// Display Hours on the LED5 and LED6
tmp_int = dec2bcd(tm_ptr->tm_hour);
tmp_left_led_digit = (unsigned short) tmp_int >> 4;
tmp_right_led_digit = (unsigned short) tmp_int & 0x000F;
max7221_control(LED_DIGIT5 | tmp_right_led_digit | 0x0080);
/*
if ((blink_value % 4) == 0)
max7221_control(LED_DIGIT5 | tmp_right_led_digit | 0x0080);
else
max7221_control(LED_DIGIT5 | tmp_right_led_digit & 0xFF7F);
*/
max7221_control(LED_DIGIT6 | tmp_left_led_digit);
/* Ethernet read Twitter message */
/*
tmp_left_led_digit = (unsigned short) tmp_int >> 4;
tmp_right_led_digit = (unsigned short) tmp_int & 0x000F;
// printf("\r\n unsigned in %d, unsigned short int %d, char %d - ", sizeof(unsigned int), sizeof(unsigned short int), sizeof(char));
printf("\r\n tmp_left_led_digit %X \r\n", tmp_left_led_digit | 0x0100);
max7221_cs = 0;
max7221_spi.write(tmp_left_led_digit | 0x0200);
max7221_cs = 1;
wait(0.01);
max7221_cs = 0;
max7221_spi.write(tmp_right_led_digit | 0x0100);
max7221_cs = 1;
tmp_int = dec2bcd(tm_ptr->tm_sec);
max7221_cs = 0;
max7221_spi.write(0x0100 || (tmp_int & 0x0F));
max7221_cs = 1;
*/
}
return 0;
};
/*
// strftime(buf, 16, "%X", localtime(&ctTime));
// lcd.locate(0, 1); // 2nd line
// lcd.printf(buf);
//sprintf(buf, ctime(&ctTime));
// lcd.printf(buf);
// printf(" Current loop count number = %d \r\n", count);
// count++;
pc.baud(460800);
printf("BlueUSB\nNow get a bunch of usb or bluetooth things and plug them in\n");
TestShell();
*/
unsigned int dec2bcd(unsigned int dec) {
unsigned int bits, bcd = 0;
for ( bits = 0; dec; bits += 4, dec /= 10 ) {
bcd |= dec % 10 << bits;
}
return bcd;
}
void max7221_control(unsigned control) {
max7221_cs = 0;
max7221_spi.write(control);
max7221_cs = 1;
wait(0.001);
}
void display_weekOfDay_month(struct tm *tm_ptr) {
// no decode
max7221_control(0x0900);
max7221_control(LED_DIGIT6 | LED__);
max7221_control(LED_DIGIT5 | LED__);
max7221_control(LED_DIGIT4 | LED__);
switch(tm_ptr->tm_mon + 1) {
case 1 :
max7221_control(LED_DIGIT6 | LED_J);
max7221_control(LED_DIGIT5 | LED_A);
max7221_control(LED_DIGIT4 | LED_N);
max7221_control(LED_DIGIT3 | LED_U);
max7221_control(LED_DIGIT2 | LED_A);
max7221_control(LED_DIGIT1 | LED_r);
break;
case 2 :
max7221_control(LED_DIGIT6 | LED_F);
max7221_control(LED_DIGIT5 | LED_E);
max7221_control(LED_DIGIT4 | LED_b);
max7221_control(LED_DIGIT3 | LED_U);
max7221_control(LED_DIGIT2 | LED_A);
max7221_control(LED_DIGIT1 | LED_r);
break;
case 3 :
max7221_control(LED_DIGIT5 | LED_M);
max7221_control(LED_DIGIT4 | LED_A);
max7221_control(LED_DIGIT3 | LED_r);
max7221_control(LED_DIGIT2 | LED_C);
max7221_control(LED_DIGIT1 | LED_H);
break;
case 4 :
max7221_control(LED_DIGIT5 | LED_A);
max7221_control(LED_DIGIT4 | LED_P);
max7221_control(LED_DIGIT3 | LED_r);
max7221_control(LED_DIGIT2 | LED_i);
max7221_control(LED_DIGIT1 | LED_I);
break;
case 5 :
max7221_control(LED_DIGIT3 | LED_M);
max7221_control(LED_DIGIT2 | LED_A);
max7221_control(LED_DIGIT1 | LED_y);
break;
case 6 :
max7221_control(LED_DIGIT4 | LED_J);
max7221_control(LED_DIGIT3 | LED_U);
max7221_control(LED_DIGIT2 | LED_N);
max7221_control(LED_DIGIT1 | LED_E);
break;
case 7 :
max7221_control(LED_DIGIT4 | LED_J);
max7221_control(LED_DIGIT3 | LED_U);
max7221_control(LED_DIGIT2 | LED_L);
max7221_control(LED_DIGIT1 | LED_y);
break;
case 8 :
max7221_control(LED_DIGIT6 | LED_A);
max7221_control(LED_DIGIT5 | LED_U);
max7221_control(LED_DIGIT4 | LED_g);
max7221_control(LED_DIGIT3 | LED_U);
max7221_control(LED_DIGIT2 | LED_S);
max7221_control(LED_DIGIT1 | LED_r);
break;
case 9 :
max7221_control(LED_DIGIT6 | LED_S);
max7221_control(LED_DIGIT5 | LED_E);
max7221_control(LED_DIGIT4 | LED_P);
max7221_control(LED_DIGIT3 | LED_t);
max7221_control(LED_DIGIT2 | LED_E);
max7221_control(LED_DIGIT1 | LED_M);
break;
case 10 :
max7221_control(LED_DIGIT6 | LED_O);
max7221_control(LED_DIGIT5 | LED_C);
max7221_control(LED_DIGIT4 | LED_t);
max7221_control(LED_DIGIT3 | LED_O);
max7221_control(LED_DIGIT2 | LED_b);
max7221_control(LED_DIGIT1 | LED_E);
break;
case 11 :
max7221_control(LED_DIGIT6 | LED_N);
max7221_control(LED_DIGIT5 | LED_O);
max7221_control(LED_DIGIT4 | LED_V);
max7221_control(LED_DIGIT3 | LED_E);
max7221_control(LED_DIGIT2 | LED_M);
max7221_control(LED_DIGIT1 | LED_b);
break;
case 12 :
max7221_control(LED_DIGIT5 | LED_E);
max7221_control(LED_DIGIT5 | LED_E);
max7221_control(LED_DIGIT4 | LED_C);
max7221_control(LED_DIGIT3 | LED_E);
max7221_control(LED_DIGIT2 | LED_M);
max7221_control(LED_DIGIT1 | LED_b);
break;
default :
max7221_control(LED_DIGIT5 | LED_M);
max7221_control(LED_DIGIT5 | LED_E);
max7221_control(LED_DIGIT4 | LED_r);
max7221_control(LED_DIGIT3 | LED_r);
max7221_control(LED_DIGIT2 | LED_o);
max7221_control(LED_DIGIT1 | LED_r);
}
wait(1.5);
// printf("tm_ptr->tm_year %d \r\n", tm_ptr->tm_year);
max7221_control(LED_DIGIT6 | LED__);
max7221_control(LED_DIGIT5 | LED__);
switch(tm_ptr->tm_year - 100) {
case 11 :
max7221_control(LED_DIGIT4 | LED_2);
max7221_control(LED_DIGIT3 | LED_0);
max7221_control(LED_DIGIT2 | LED_1);
max7221_control(LED_DIGIT1 | LED_1);
break;
case 12 :
max7221_control(LED_DIGIT4 | LED_2);
max7221_control(LED_DIGIT3 | LED_0);
max7221_control(LED_DIGIT2 | LED_1);
max7221_control(LED_DIGIT1 | LED_2);
break;
case 13 :
max7221_control(LED_DIGIT4 | LED_2);
max7221_control(LED_DIGIT3 | LED_0);
max7221_control(LED_DIGIT2 | LED_1);
max7221_control(LED_DIGIT1 | LED_3);
break;
case 14 :
max7221_control(LED_DIGIT4 | LED_2);
max7221_control(LED_DIGIT3 | LED_0);
max7221_control(LED_DIGIT2 | LED_1);
max7221_control(LED_DIGIT1 | LED_4);
break;
case 15 :
max7221_control(LED_DIGIT4 | LED_2);
max7221_control(LED_DIGIT3 | LED_0);
max7221_control(LED_DIGIT2 | LED_1);
max7221_control(LED_DIGIT1 | LED_5);
break;
case 16 :
max7221_control(LED_DIGIT4 | LED_2);
max7221_control(LED_DIGIT3 | LED_0);
max7221_control(LED_DIGIT2 | LED_1);
max7221_control(LED_DIGIT1 | LED_6);
break;
case 17 :
max7221_control(LED_DIGIT4 | LED_2);
max7221_control(LED_DIGIT3 | LED_0);
max7221_control(LED_DIGIT2 | LED_1);
max7221_control(LED_DIGIT1 | LED_7);
break;
case 18 :
max7221_control(LED_DIGIT4 | LED_2);
max7221_control(LED_DIGIT3 | LED_0);
max7221_control(LED_DIGIT2 | LED_1);
max7221_control(LED_DIGIT1 | LED_8);
break;
case 19 :
max7221_control(LED_DIGIT4 | LED_2);
max7221_control(LED_DIGIT3 | LED_0);
max7221_control(LED_DIGIT2 | LED_1);
max7221_control(LED_DIGIT1 | LED_9);
break;
case 20 :
max7221_control(LED_DIGIT4 | LED_2);
max7221_control(LED_DIGIT3 | LED_0);
max7221_control(LED_DIGIT2 | LED_2);
max7221_control(LED_DIGIT1 | LED_0);
break;
default :
max7221_control(LED_DIGIT5 | LED_y);
max7221_control(LED_DIGIT5 | LED_E);
max7221_control(LED_DIGIT4 | LED_r);
max7221_control(LED_DIGIT3 | LED_r);
max7221_control(LED_DIGIT2 | LED_o);
max7221_control(LED_DIGIT1 | LED_r);
}
wait(1.5);
// BCD mode
max7221_control(0x09FF);
}
void display_day_year(struct tm *tm_ptr) {
// no decode
max7221_control(0x0900);
printf("tm_ptr->tm_wday %d \r\n", tm_ptr->tm_wday);
switch(tm_ptr->tm_wday) {
case 0 :
max7221_control(LED_DIGIT6 | LED_S);
max7221_control(LED_DIGIT5 | LED_U);
max7221_control(LED_DIGIT4 | LED_N);
break;
case 1 :
max7221_control(LED_DIGIT6 | LED_M);
max7221_control(LED_DIGIT5 | LED_O);
max7221_control(LED_DIGIT4 | LED_N);
break;
case 2 :
max7221_control(LED_DIGIT6 | LED_t);
max7221_control(LED_DIGIT5 | LED_U);
max7221_control(LED_DIGIT4 | LED_E);
break;
case 3 :
max7221_control(LED_DIGIT6 | LED_W);
max7221_control(LED_DIGIT5 | LED_E);
max7221_control(LED_DIGIT4 | LED_d);
break;
case 4 :
max7221_control(LED_DIGIT6 | LED_t);
max7221_control(LED_DIGIT5 | LED_h);
max7221_control(LED_DIGIT4 | LED_u);
break;
case 5 :
max7221_control(LED_DIGIT6 | LED_F);
max7221_control(LED_DIGIT5 | LED_r);
max7221_control(LED_DIGIT4 | LED_i);
break;
case 6 :
max7221_control(LED_DIGIT6 | LED_S);
max7221_control(LED_DIGIT5 | LED_A);
max7221_control(LED_DIGIT4 | LED_t);
break;
default :
max7221_control(LED_DIGIT6 | LED_E);
max7221_control(LED_DIGIT5 | LED_r);
max7221_control(LED_DIGIT4 | LED_r);
}
max7221_control(LED_DIGIT3 | LED__);
max7221_control(LED_DIGIT2 | LED__);
switch(tm_ptr->tm_mday) {
case 1 :
max7221_control(LED_DIGIT1 | LED_1);
break;
case 2 :
max7221_control(LED_DIGIT1 | LED_2);
break;
case 3 :
max7221_control(LED_DIGIT1 | LED_3);
break;
case 4 :
max7221_control(LED_DIGIT1 | LED_4);
break;
case 5 :
max7221_control(LED_DIGIT1 | LED_5);
break;
case 6 :
max7221_control(LED_DIGIT1 | LED_6);
break;
case 7 :
max7221_control(LED_DIGIT1 | LED_7);
break;
case 8 :
max7221_control(LED_DIGIT1 | LED_8);
break;
case 9 :
max7221_control(LED_DIGIT1 | LED_9);
break;
case 11 :
max7221_control(LED_DIGIT2 | LED_1);
max7221_control(LED_DIGIT1 | LED_0);
break;
case 12 :
max7221_control(LED_DIGIT2 | LED_1);
max7221_control(LED_DIGIT1 | LED_2);
break;
case 13 :
max7221_control(LED_DIGIT2 | LED_1);
max7221_control(LED_DIGIT1 | LED_3);
break;
case 14 :
max7221_control(LED_DIGIT2 | LED_1);
max7221_control(LED_DIGIT1 | LED_4);
break;
case 15 :
max7221_control(LED_DIGIT2 | LED_1);
max7221_control(LED_DIGIT1 | LED_5);
break;
case 16 :
max7221_control(LED_DIGIT2 | LED_1);
max7221_control(LED_DIGIT1 | LED_6);
break;
case 17 :
max7221_control(LED_DIGIT2 | LED_1);
max7221_control(LED_DIGIT1 | LED_7);
break;
case 18 :
max7221_control(LED_DIGIT2 | LED_1);
max7221_control(LED_DIGIT1 | LED_8);
break;
case 19 :
max7221_control(LED_DIGIT2 | LED_1);
max7221_control(LED_DIGIT1 | LED_9);
break;
case 20 :
max7221_control(LED_DIGIT2 | LED_2);
max7221_control(LED_DIGIT1 | LED_0);
break;
case 21 :
max7221_control(LED_DIGIT2 | LED_2);
max7221_control(LED_DIGIT1 | LED_1);
break;
case 22 :
max7221_control(LED_DIGIT2 | LED_2);
max7221_control(LED_DIGIT1 | LED_2);
break;
case 23 :
max7221_control(LED_DIGIT2 | LED_2);
max7221_control(LED_DIGIT1 | LED_3);
break;
case 24 :
max7221_control(LED_DIGIT2 | LED_2);
max7221_control(LED_DIGIT1 | LED_4);
break;
case 25 :
max7221_control(LED_DIGIT2 | LED_2);
max7221_control(LED_DIGIT1 | LED_5);
break;
case 26 :
max7221_control(LED_DIGIT2 | LED_2);
max7221_control(LED_DIGIT1 | LED_6);
break;
case 27 :
max7221_control(LED_DIGIT2 | LED_2);
max7221_control(LED_DIGIT1 | LED_7);
break;
case 28 :
max7221_control(LED_DIGIT2 | LED_2);
max7221_control(LED_DIGIT1 | LED_8);
break;
case 29 :
max7221_control(LED_DIGIT2 | LED_2);
max7221_control(LED_DIGIT1 | LED_9);
break;
case 30 :
max7221_control(LED_DIGIT2 | LED_3);
max7221_control(LED_DIGIT1 | LED_0);
break;
case 31 :
max7221_control(LED_DIGIT2 | LED_3);
max7221_control(LED_DIGIT1 | LED_1);
break;
}
wait(1.5);
// BCD mode
max7221_control(0x09FF);
}
/*
DigitalOut myled(LED1);
int main() {
while(1) {
myled = 1;
wait(0.2);
myled = 0;
wait(0.2);
}
}
*/