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
Diff: main.cpp
- Revision:
- 0:e083abcfe7a8
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Jun 22 01:31:47 2011 +0000
@@ -0,0 +1,707 @@
+/*************************************************************
+ 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);
+ }
+}
+*/