初始化提交
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王立帮
345
arduino-cli/libraries/Bluebit/BluebitTM1650.cpp
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345
arduino-cli/libraries/Bluebit/BluebitTM1650.cpp
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#include "BluebitTM1650.h"
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/** Constructor, uses default values for the parameters
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* so could be called with no parameters.
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* aNumDigits - number of display digits (default = 4)
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*/
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TM1650::TM1650(unsigned int aNumDigits) {
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iNumDigits = (aNumDigits > TM1650_NUM_DIGITS) ? TM1650_NUM_DIGITS : aNumDigits;
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}
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/** Initialization
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* initializes the driver. Turns display on, but clears all digits.
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*/
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void TM1650::init() {
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iPosition = NULL;
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for (int i=0; i<iNumDigits; i++) {
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iBuffer[i] = 0;
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iCtrl[i] = 0;
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}
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Wire.beginTransmission(TM1650_DISPLAY_BASE);
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iActive = (Wire.endTransmission() == 0);
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clear();
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displayOn();
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}
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/** Set brightness of all digits equally
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* aValue - brightness value with 1 being the lowest, and 7 being the brightest
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*/
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void TM1650::setBrightness(unsigned int aValue) {
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if (!iActive) return;
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iBrightness = (aValue > TM1650_MAX_BRIGHT) ? TM1650_MAX_BRIGHT : aValue;
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for (int i=0; i<iNumDigits; i++) {
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Wire.beginTransmission(TM1650_DCTRL_BASE+i);
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iCtrl[i] = (iCtrl[i] & TM1650_MSK_BRIGHT) | ( iBrightness << TM1650_BRIGHT_SHIFT );
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Wire.write((byte) iCtrl[i]);
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Wire.endTransmission();
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}
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}
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/** Set brightness of all digits equally
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* aValue - brightness value with 1 being the lowest, and 7 being the brightest
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*/
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void TM1650::setBrightnessGradually(unsigned int aValue) {
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if (!iActive || aValue == iBrightness) return;
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if (aValue > TM1650_MAX_BRIGHT) aValue = TM1650_MAX_BRIGHT;
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int step = (aValue < iBrightness) ? -1 : 1;
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unsigned int i = iBrightness;
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do {
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setBrightness(i);
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delay(50);
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i += step;
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} while (i!=aValue);
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}
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/** Turns display on or off according to aState
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*/
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void TM1650::displayState (bool aState)
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{
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if (aState) displayOn ();
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else displayOff();
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}
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/** Turns the display on
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*/
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void TM1650::displayOn ()
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// turn all digits on
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{
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if (!iActive) return;
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for (int i=0; i<iNumDigits; i++) {
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Wire.beginTransmission(TM1650_DCTRL_BASE+i);
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iCtrl[i] = (iCtrl[i] & TM1650_MSK_ONOFF) | TM1650_BIT_DOT;
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Wire.write((byte) iCtrl[i]);
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Wire.endTransmission();
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}
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}
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/** Turns the display off
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*/
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void TM1650::displayOff ()
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// turn all digits off
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{
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if (!iActive) return;
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for (int i=0; i<iNumDigits; i++) {
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Wire.beginTransmission(TM1650_DCTRL_BASE+i);
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iCtrl[i] = (iCtrl[i] & TM1650_MSK_ONOFF);
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Wire.write((byte) iCtrl[i]);
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Wire.endTransmission();
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}
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}
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/** Directly write to the CONTROL register of the digital position
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* aPos = position to set the control register for
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* aValue = value to write to the position
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*
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* Internal control buffer is updated as well
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*/
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void TM1650::controlPosition(unsigned int aPos, byte aValue) {
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if (!iActive) return;
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if (aPos < iNumDigits) {
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Wire.beginTransmission(TM1650_DCTRL_BASE + (int) aPos);
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iCtrl[aPos] = aValue;
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Wire.write(aValue);
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Wire.endTransmission();
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}
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}
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/** Directly write to the digit register of the digital position
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* aPos = position to set the digit register for
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* aValue = value to write to the position
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*
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* Internal position buffer is updated as well
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*/
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void TM1650::setPosition(unsigned int aPos, byte aValue) {
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if (!iActive) return;
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if (aPos < iNumDigits) {
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Wire.beginTransmission(TM1650_DISPLAY_BASE + (int) aPos);
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iBuffer[aPos] = aValue;
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Wire.write(aValue);
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Wire.endTransmission();
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}
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}
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/** Directly set/clear a 'dot' next to a specific position
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* aPos = position to set/clear the dot for
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* aState = display the dot if true, clear if false
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*
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* Internal buffer is updated as well
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*/
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void TM1650::setDot(unsigned int aPos, bool aState) {
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iBuffer[aPos] = iBuffer[aPos] & 0x7F |(aState ? 0b10000000 : 0);
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setPosition(aPos, iBuffer[aPos]);
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}
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/** Clear all digits. Keep the display on.
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*/
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void TM1650::clear()
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// clears all digits
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{
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if (!iActive) return;
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for (int i=0; i<iNumDigits; i++) {
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Wire.beginTransmission(TM1650_DISPLAY_BASE+i);
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iBuffer[i] = 0;
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Wire.write((byte) 0);
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Wire.endTransmission();
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}
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}
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/** Display string on the display
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* aString = character array to be displayed
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*
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* Internal buffer is updated as well
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* Only first N positions of the string are displayed if
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* the string is longer than the number of digits
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*/
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void TM1650::displayString(char *aString)
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{
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if (!iActive) return;
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for (int i=0; i<iNumDigits; i++) {
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byte a = ((byte) aString[i]) & 0b01111111;
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byte dot = ((byte) aString[i]) & 0b10000000;
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#ifndef TM1650_USE_PROGMEM
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iBuffer[i] = TM1650_CDigits[a];
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#else
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iBuffer[i] = pgm_read_byte_near(TM1650_CDigits + a);
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#endif
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if (a) {
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Wire.beginTransmission(TM1650_DISPLAY_BASE+i);
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Wire.write(iBuffer[i] | dot);
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Wire.endTransmission();
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}
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else
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break;
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}
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}
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/** Display string on the display in a running fashion
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* aString = character array to be displayed
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*
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* Starts with first N positions of the string.
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* Subsequent characters are displayed with 1 char shift each time displayRunningShift() is called
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*
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* returns: number of iterations remaining to display the whole string
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*/
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int TM1650::displayRunning(char *aString) {
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strncpy(iString, aString, TM1650_MAX_STRING+1);
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iPosition = iString;
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iString[TM1650_MAX_STRING] = '\0'; //just in case.
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displayString(iPosition);
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int l = strlen(iPosition);
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if (l <= iNumDigits) return 0;
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return (l - iNumDigits);
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}
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/** Display next segment (shifting to the left) of the string set by displayRunning()
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* Starts with first N positions of the string.
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* Subsequent characters are displayed with 1 char shift each time displayRunningShift is called
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*
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* returns: number of iterations remaining to display the whole string
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*/
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int TM1650::displayRunningShift() {
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if (strlen(iPosition) <= iNumDigits) return 0;
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displayString(++iPosition);
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return (strlen(iPosition) - iNumDigits);
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}
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char *TM1650::shiftStr(char *str) {
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int length = strlen(str);
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char newStr[length + 1];
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newStr[0] = ' ';
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for(int i=0;i<strlen(newStr);i++)
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{
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newStr[i+1] = str[i];
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}
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return newStr;
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}
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void TM1650::displayDot(char *dotStr) {
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for (int j = 1; j < 4; j++) {
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if (dotStr[j] == '1') {
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setDot(j - 1, true);
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}else {
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setDot(j - 1, false);
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}
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}
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}
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void TM1650::disComplexString(int num) {
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char str[10];
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if(num > 9999) num = 9999;
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if(num < -1000) num = -999;
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sprintf(str, "%4d", num);
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displayString(str);
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}
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void TM1650::disComplexString(double num) {
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if(num > 9999) num = 9999;
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if(num < -1000) num = -999;
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int numInt = (int)num;
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disComplexString(numInt);
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}
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void TM1650::disComplexString(float num) {
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if(num > 9999) num = 9999;
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if(num < -1000) num = -999;
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int numInt = (int)num;
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disComplexString(numInt);
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}
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void TM1650::disComplexString(long num) {
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if(num > 9999) num = 9999;
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if(num < -1000) num = -999;
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int numInt = (int)num;
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disComplexString(numInt);
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}
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void TM1650::disComplexString(char *str) {
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// char strC;
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int strLength = strlen(str);
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char strDot[4];
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char strChar[64];
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char strDisplay[4];
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char longStr[strLength + 1];
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int num;
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for (int i =0; i < 4; i++) {
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strDot[i] = '0';
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}
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for (int i =0; i < 4; i++) {
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strDisplay[i] = ' ';
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}
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for (int i =0; i < 64; i++) {
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strChar[i] = ' ';
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}
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for (int i =0; i < strLength + 1; i++) {
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longStr[i] = ' ';
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}
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num = 0;
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for (int i = 0; i < strlen(str); i++)
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{
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if (str[i] == '.') {
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strDot[i] = '1';
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}
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else
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{
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strDot[i] = '0';
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strChar[num] = str[i];
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num++;
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}
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}
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switch (num) {
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case 1:
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strDisplay[0] = ' ';
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strDisplay[1] = ' ';
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strDisplay[2] = ' ';
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strDisplay[3] = strChar[num - 1];
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displayString(strDisplay);
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displayDot(strDot);
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break;
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case 2:
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strDisplay[0] = ' ';
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strDisplay[1] = ' ';
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strDisplay[2] = strChar[num - 2];
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strDisplay[3] = strChar[num - 1];
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displayString(strDisplay);
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displayDot(strDot);
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break;
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case 3:
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strDisplay[0] = ' ';
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strDisplay[1] = strChar[num - 3];
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strDisplay[2] = strChar[num - 2];
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strDisplay[3] = strChar[num - 1];
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displayString(strDisplay);
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displayDot(strDot);
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break;
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case 4:
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strDisplay[0] = strChar[num - 4];
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strDisplay[1] = strChar[num - 3];
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strDisplay[2] = strChar[num - 2];
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strDisplay[3] = strChar[num - 1];
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displayString(strDisplay);
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displayDot(strDot);
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break;
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default :
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longStr[0] = ' ';
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for (int i =0; i < strLength; i++) {
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longStr[i + 1] = str[i];
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}
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if (displayRunning(longStr)) {
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while (displayRunningShift()) delay(500);
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}
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break;
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}
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}
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