J&W / Mbed OS frdm_LED_PWM

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Dependencies:   tsi_sensor MMA8451Q

LED_line.h@0:225e4447fdd3, 2020-06-07 (annotated)

Committer:
Pythia
Date:
Sun Jun 07 19:50:51 2020 +0000
Revision:
0:225e4447fdd3
Child:
1:1e448c750b63
LED PWM on FRDM with no usage of the mBed PWM

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Pythia 0:225e4447fdd3 1 #include "mbed.h"
Pythia 0:225e4447fdd3 2
Pythia 0:225e4447fdd3 3 #define LED_OFF 1
Pythia 0:225e4447fdd3 4 #define LED_ON 0
Pythia 0:225e4447fdd3 5
Pythia 0:225e4447fdd3 6 #define L_CYCLE 2400
Pythia 0:225e4447fdd3 7
Pythia 0:225e4447fdd3 8 #define L_LED_OFF ((unsigned long int)(0.01*L_CYCLE))
Pythia 0:225e4447fdd3 9 #define L_LED_ON ((unsigned long int)(0.99*L_CYCLE))
Pythia 0:225e4447fdd3 10
Pythia 0:225e4447fdd3 11 #define RAMP_SLOPE 50
Pythia 0:225e4447fdd3 12 #define ON_TIMEOUT 500
Pythia 0:225e4447fdd3 13
Pythia 0:225e4447fdd3 14
Pythia 0:225e4447fdd3 15 class LED_line
Pythia 0:225e4447fdd3 16 {
Pythia 0:225e4447fdd3 17 public:
Pythia 0:225e4447fdd3 18 LED_line ( const PinName led_pin,
Pythia 0:225e4447fdd3 19 const unsigned long int led_min_in=L_LED_OFF,
Pythia 0:225e4447fdd3 20 const unsigned long int led_max_in=L_LED_ON,
Pythia 0:225e4447fdd3 21 const unsigned long int led_cycle_in=L_CYCLE,
Pythia 0:225e4447fdd3 22 const bool mode=false );
Pythia 0:225e4447fdd3 23 void light(const unsigned int lenght=RAMP_SLOPE, const unsigned int timeout=ON_TIMEOUT);
Pythia 0:225e4447fdd3 24 void dark(const unsigned int lenght=RAMP_SLOPE);
Pythia 0:225e4447fdd3 25 inline void level(const unsigned long int led_level) {current_light = led_level; return; };
Pythia 0:225e4447fdd3 26 inline unsigned long int level(void) { return current_light; };
Pythia 0:225e4447fdd3 27 enum state_type {IDLE=0, UP, FULL, DOWN, DARK};
Pythia 0:225e4447fdd3 28 enum state_type state(void);
Pythia 0:225e4447fdd3 29 void LED_run(void);
Pythia 0:225e4447fdd3 30 ~LED_line();
Pythia 0:225e4447fdd3 31 private:
Pythia 0:225e4447fdd3 32 inline int LED_PWM_F(const unsigned long int in) {return ((this->cnt < (in)) ? LED_ON : LED_OFF); };
Pythia 0:225e4447fdd3 33 inline int LED_PWM_B(const unsigned long int in) {return ((this->cnt > (this->led_cycle - (in))) ? LED_ON : LED_OFF); };
Pythia 0:225e4447fdd3 34 DigitalOut *led;
Pythia 0:225e4447fdd3 35 const unsigned long int led_min;
Pythia 0:225e4447fdd3 36 const unsigned long int led_max;
Pythia 0:225e4447fdd3 37 const unsigned long int led_cycle;
Pythia 0:225e4447fdd3 38 const bool led_mode;
Pythia 0:225e4447fdd3 39 unsigned long int cnt;
Pythia 0:225e4447fdd3 40 enum state_type state_value;
Pythia 0:225e4447fdd3 41 unsigned int delta;
Pythia 0:225e4447fdd3 42 unsigned int timeout;
Pythia 0:225e4447fdd3 43 unsigned long int current_light;
Pythia 0:225e4447fdd3 44 };
Pythia 0:225e4447fdd3 45