Digitales avanzados umb
Proyecto digitales avanzados
Fork of
BMP180
by 
Kris Winer
Diff: HT16K33.h
- Revision:
- 1:aa10a7465c76
- Parent:
- 0:06dc60296e6e
--- a/HT16K33.h Thu Jul 03 20:05:55 2014 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,266 +0,0 @@
-#ifndef HT16K33_H
-#define HT16K33_H
-
-#include "mbed.h"
-
-#define HT16K33_ADDRESS 0x70<<1 // shift to the left one for mbed
-#define HT16K33_ON 0x21 // Commands
-#define HT16K33_STANDBY 0x20
-#define HT16K33_DISPLAYON 0x81
-#define HT16K33_DISPLAYOFF 0x80
-#define HT16K33_BLINKON 0x85 // Blink is off (00), 2 Hz (01), 1 Hz (10), or 0.5 Hz (11) for bits (21)
-#define HT16K33_BLINKOFF 0x81
-#define HT16K33_DIM 0xE0 | 0x08 // Set brihtness from 1/16 (0x00) to 16/16 (0xFF)
-
-// Arrangement for display 1 (4 digit bubble display)
-//
-// a = A0
-// _________
-// | |
-// f = A2 | g = A4 | b = A1
-// |_________|
-// | |
-// e = A5 | | c = A6
-// |_________|
-// d = A3 DP = A7
-
-
-static const char numberTable[] =
-{
- 0x6F, // 0 = 0
- 0x42, // 1 = 1, etc
- 0x3B, // 2
- 0x5B, // 3
- 0x56, // 4
- 0x5D, // 5
- 0x7D, // 6
- 0x43, // 7
- 0x7F, // 8
- 0x57, // 9
- 0x80, // decimal point
- 0x00, // blank
- 0x10, // minus sign
-};
-
-#define display1 1
-#define display2 2
-#define display3 3
-#define display4 4
-
-class HT16K33 {
-
- protected:
-
- public:
- //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-//++ Useful Functions++
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-
-void writeInteger(uint8_t dsply, int data)
-{
- char string[10] = ""; // define character array to hold the digits
- itoa(data, string); // get ascii character string representation of the integer to be displayed
- uint8_t length = strlen(string); // get the length of the string; number of digits in integer
- uint8_t blanks = 4 - length; // how many blanks do we have?
-
- if (length > 4) return; // if length greater than 4 digits we can't display on a four-digit display!
-
- for (uint8_t digit = 0; digit < blanks; digit++) // scroll through each digit to determine what to write to the display
- {
- writeDigit(dsply, digit + 1, 11, 0); // clear digit wherever there are blanks
- }
-
- for (uint8_t digit = 0; digit < 4; digit++) // scroll through each digit to determine what to write to the display
- {
- char ch = string[digit]; // get the ascii character of the next string segment
-
- if (ch == '-') {
- writeDigit(dsply, digit + 1 + blanks, 12, 0); // check if negative sign needed
- }
- else { // character must be a digit
- ch -= '0'; // convert it to an integer
- writeDigit(dsply, digit + 1 + blanks, ch, 0); // write it to the display; right justify the integer
- }
- }
-}
-
-void writeFloat(uint8_t dsply, float data, uint8_t dp)
-{
- char string[10] = ""; // define character array to hold the digits
- int datanew = 0;
-
- switch (dp)
- {
- case 0:
- datanew = (int )(1.0f*data);
- break;
-
- case 1:
- datanew = (int )(10.0f*data);
- break;
-
- case 2:
- datanew = (int )(100.0f*data);
- break;
-
- case 3:
- datanew = (int )(1000.0f*data);
- break;
- }
-
-
- itoa(datanew, string); // get ascii character string representation of the integer to be displayed
- uint8_t length = strlen(string); // get the length of the string; number of digits in integer
- uint8_t blanks = 4 - length; // how many blanks do we have?
-
- if (length > 4) return; // if length greater than 4 digits we can't display on a four-digit display!
-
-// scroll through each digit to determine what to write to the display
-for (uint8_t digit = 0; digit < blanks; digit++) // first the blanks
- {
- if( (digit + 1) == (4 - dp) ) { // handle special case where blank coincides with decimal point
- writeDigit(dsply, digit + 1, 0, 0x80); // add leading zero before decimal place
- }
- else {
- writeDigit(dsply, digit + 1, 11, 0x00); // otherwise clear digit wherever there are blanks
- }
- }
-
- for (uint8_t digit = 0; digit < 4; digit++) // now the characters to determine what to write to the display
- {
- char ch = string[digit]; // get the ascii character of the next string segment
-
- if (ch == '-') {
- if((digit + 1 + blanks) == (4 - dp) ) {
- writeDigit(dsply, digit + 1 + blanks, 0, 0x80); // check if negative sign needed, add a decimal point
- writeDigit(dsply, digit + 0 + blanks, 12, 0x00); // add a leading zero
- }
- else {
- writeDigit(dsply, digit + 1 + blanks, 12, 0x00); // check if negative sign needed, no decimal point
- }
- }
- else { // character must be a digit
- ch -= '0'; // convert it to an integer
- if((digit + 1 + blanks) == (4 - dp) ) {
- writeDigit(dsply, digit + 1 + blanks, ch, 0x80); // write it to the display with decimal point; right justify the integer
- }
- else {
- writeDigit(dsply, digit + 1 + blanks, ch, 0x00); // write it to the display; right justify the integer
- }
- }
- }
-}
-
-
-void writeDigit(uint8_t dsply, uint8_t digit, uint8_t data, uint8_t dp)
-{
-if(dsply == 1) {
- digit = (digit - 1)*2 + 0;
-}
-if(dsply == 2) {
- digit = (digit - 1)*2 + 8 ;
-}
-if(dsply == 3) {
- digit = (digit - 1)*2 + 1;
-}
-if(dsply == 4) {
- digit = (digit - 1)*2 + 9;
-}
-writeByte(HT16K33_ADDRESS, digit, numberTable[data] | dp);
-}
-
-
-void clearDsplay(int dsply)
-{
- for(int i = 0; i < 8; i++) {
- writeDigit(dsply, i, 11, 0); // Clear display, 11 is blank in the numberTable above
- }
-}
-
-
-void initHT16K33()
-{
- writeCommand(HT16K33_ADDRESS, HT16K33_ON); // Turn on system oscillator
- writeCommand(HT16K33_ADDRESS, HT16K33_DISPLAYON); // Display on
- writeCommand(HT16K33_ADDRESS, HT16K33_DIM); // Set brightness
-
-}
-
-
-void blinkHT16K33(int time)
-{
- writeCommand(HT16K33_ADDRESS, HT16K33_BLINKON); // Turn on blink
- wait(time);
- writeCommand(HT16K33_ADDRESS, HT16K33_BLINKOFF); // Turn on blink
-}
-
-
- /* itoa: convert n to characters in s */
- void itoa(int n, char s[])
- {
- int i, sign;
-
- if ((sign = n) < 0) /* record sign */
- n = -n; /* make n positive */
- i = 0;
- do { /* generate digits in reverse order */
- s[i++] = n % 10 + '0'; /* get next digit */
- } while ((n /= 10) > 0); /* delete it */
- if (sign < 0)
- s[i++] = '-';
- s[i] = '\0';
- reverse(s);
- }
-
- /* reverse: reverse string s in place */
- void reverse(char s[])
- {
- int i, j;
- char c;
-
- for (i = 0, j = strlen(s)-1; i<j; i++, j--) {
- c = s[i];
- s[i] = s[j];
- s[j] = c;
- }
- }
-
- // Wire.h read and write protocols
- void writeCommand(uint8_t address, uint8_t command)
- {
- char data_write[1];
- data_write[0] = command;
- i2c.write(address, data_write, 1, 0);
-}
-
- void writeByte(uint8_t address, uint8_t subAddress, uint8_t data)
-{
- char data_write[2];
- data_write[0] = subAddress;
- data_write[1] = data;
- i2c.write(address, data_write, 2, 0);
-}
-
- char readByte(uint8_t address, uint8_t subAddress)
-{
- char data[1]; // `data` will store the register data
- char data_write[1];
- data_write[0] = subAddress;
- i2c.write(address, data_write, 1, 1); // no stop
- i2c.read(address, data, 1, 0);
- return data[0];
-}
-
- void readBytes(uint8_t address, uint8_t subAddress, uint8_t count, uint8_t * dest)
-{
- char data[14];
- char data_write[1];
- data_write[0] = subAddress;
- i2c.write(address, data_write, 1, 1); // no stop
- i2c.read(address, data, count, 0);
- for(int ii = 0; ii < count; ii++) {
- dest[ii] = data[ii];
- }
-}
- };
-#endif
\ No newline at end of file