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esp8266 pwm sound

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This commit is contained in:
Stephen Crane 2018-11-09 07:25:13 +00:00
parent df9d46770d
commit 971f34f1b3
2 changed files with 16 additions and 7 deletions

15
hw/esp8266-pwm.h

@ -3,12 +3,11 @@
//must define these in Makefile (or platformio)
//#define USER_SETUP_LOADED
//#define ILI9163_DRIVER
//#define TFT_CS 5
//#define TFT_DC 2
//#define TFT_MOSI 23
//#define TFT_MISO -1
//#define TFT_SCLK 18
//#define TFT_RST -1
//#define TFT_CS PIN_D6
//#define TFT_DC PIN_D8
//#define TFT_WIDTH 240
//#define TFT_HEIGHT 320
//#define TFT_RST -1
//#define SPI_FREQUENCY 40000000
//#define LOAD_GLCD
@ -21,7 +20,9 @@
// "tape" storage...
#undef SD_CS
#undef USE_SPIFFS
// sound
#define PWM_SOUND 25
#define PWM_SOUND D2
#define PWM_DUTY 20 // 20/1024 -> volume
#define PWM_TOP 1024

8
sound_pwm.cpp

@ -1,3 +1,4 @@
#include <Arduino.h>
#include "sound_pwm.h"
#include "hardware.h"
@ -40,15 +41,22 @@ void PWM::set_freq(unsigned freq) {
}
#else
static unsigned pin;
void PWM::begin(unsigned gpio) {
pin = gpio;
analogWriteRange(PWM_TOP);
}
void PWM::set_duty(unsigned duty) {
analogWrite(pin, duty);
}
void PWM::stop() {
analogWrite(pin, 0);
}
void PWM::set_freq(unsigned freq) {
analogWriteFreq(freq);
}
#endif