123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136 |
- #include "pwm.h"
-
- uint8_t Treppe::softstart_led(uint8_t led, uint16_t startval, uint16_t stopval){
- /*
- softstart task
-
- - get's called at regular intervals (1ms at the moment)
- - dimms single led (0 - 15, PCA9685 outputs) with linear intervals vom startval to stopval
- - calculates pwm steps depending on startval, stopval and timeinterval
- - -> results in constanst speed
- - returns 1 if led dimming is running
- - returns 0 if led dimming is finished
-
- */
-
- static uint8_t lastled = 255;
- static float current_pwm = 0;
- static float stepsize = 1.0;
- if(led != lastled){
- pwmController.setChannelPWM(led, (uint16_t)startval);
- lastled = led;
- current_pwm = startval;
- stepsize = 20*abs(stopval - startval)/(float)time_per_stair; // only valid at 1ms function call interval
- return 1;
- }
-
- if(current_pwm > stopval - stepsize && current_pwm < stopval + stepsize) return 0;
- // todo: duty cycle zero!
- if(startval > stopval){
- current_pwm -= stepsize;
- }
- else {
- current_pwm += stepsize;
- }
- Serial.println((uint16_t)current_pwm);
- pwmController.setChannelPWM(led, (uint16_t)current_pwm);
- return 1;
- }
-
- void Treppe::ledsequence(){
- static int8_t led = 0;
- static uint16_t brightness = 0;
- static uint16_t lastbrightness = 0;
- static uint8_t finish = 1;
- static uint16_t status = 0;
- uint16_t status_build = 0;
- status_build |= direction << 8;
- status_build |= state;
- if(status_build != status){ // check if any parameter changed
- finish = 0; // set state unfinished -> start action
- if(direction) led = 0; // reset led counter depending of direction
- else led = stairs-1;
- if(state){
- brightness = active_brightness; // set brightness value depending of on/off
- lastbrightness = idle_brightness;
- }
- else{
- brightness = idle_brightness;
- lastbrightness = active_brightness;
- }
- status = status_build; // set parameter memory
- Serial.print("----Status Changed! onoff: ");
- Serial.print(state);
- Serial.print(" dir: ");
- Serial.println(direction);
-
- }
- if(!finish){ // finish == 0 -> action pending
- if(!softstart_led(led,lastbrightness, brightness)){
- Serial.print("one LED finished: ");
- Serial.print(led);
- Serial.print(" last: ");
- Serial.print(lastbrightness);
- Serial.print(" curr: ");
- Serial.println(brightness);
- if(direction){
- led++;
- if(led >= stairs) {
- finish = 1;
- //lastbrightness = brightness;
- }
- }
- else{
- led--;
- if(led < 0){
- //lastbrightness = brightness;
- finish = 1;
- }
- }
- }
- }
- }
-
- void Treppe::setup(){
- pwmController.resetDevices();
- pwmController.init();
- pwmController.setPWMFrequency(200);
- Serial.println("Hello from Treppe");
- Serial.print("Treppe: initial parameters: stairs=");
- Serial.println(stairs);
- }
- void Treppe::task(){
- ledsequence();
- }
-
- uint16_t Treppe::setIdle(uint16_t _idle_brightness){
- idle_brightness = _idle_brightness;
- Serial.println("Treppe: idle brightness changed!");
- return idle_brightness;
- }
- uint16_t Treppe::setActive(uint16_t _active_brightness){
- active_brightness = _active_brightness;
- Serial.println("Treppe: active brightness changed!");
- return active_brightness;
- }
- uint16_t Treppe::setTime(uint16_t _time_per_stair){
- time_per_stair = _time_per_stair;
- Serial.println("Treppe: time changed!");
- return time_per_stair;
- }
-
- uint8_t Treppe::setDirection(uint8_t _direction){
- direction = _direction;
- Serial.println("Treppe: Direction changed!");
- // to do: implement state command variable to determine dimm-state
- return direction;
- }
-
- uint8_t Treppe::setState(uint8_t _state){
- if(state == _state) return 1;
- else{
- state = _state;
- Serial.println("Treppe: State changed!");
- }
- return 0;
- }
|