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Merge pull request #1090 from qmk/backlight_softpwm

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Adds soft PWM backlight for non-timed ports
This commit is contained in:
Jack Humbert 2017-03-15 11:17:07 -04:00 • committed by GitHub
commit b794719952
4 changed files with 50 additions and 18 deletions
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59
quantum/quantum.c
View file

@ -7,6 +7,9 @@
#define TAPPING_TERM 200
#endif
#include "backlight.h"
extern backlight_config_t backlight_config;
#ifdef FAUXCLICKY_ENABLE
#include "fauxclicky.h"
#endif
@ -601,6 +604,10 @@ void matrix_scan_quantum() {
matrix_scan_combo();
#endif
#if defined(BACKLIGHT_ENABLE) && defined(BACKLIGHT_PIN)
backlight_task();
#endif
matrix_scan_kb();
}
@ -668,13 +675,13 @@ __attribute__ ((weak))
void backlight_set(uint8_t level)
{
// Prevent backlight blink on lowest level
#if BACKLIGHT_ON_STATE == 0
// PORTx &= ~n
_SFR_IO8((backlight_pin >> 4) + 2) &= ~_BV(backlight_pin & 0xF);
#else
// PORTx |= n
_SFR_IO8((backlight_pin >> 4) + 2) |= _BV(backlight_pin & 0xF);
#endif
// #if BACKLIGHT_ON_STATE == 0
// // PORTx &= ~n
// _SFR_IO8((backlight_pin >> 4) + 2) &= ~_BV(backlight_pin & 0xF);
// #else
// // PORTx |= n
// _SFR_IO8((backlight_pin >> 4) + 2) |= _BV(backlight_pin & 0xF);
// #endif
if ( level == 0 ) {
#ifndef NO_BACKLIGHT_CLOCK
@ -682,13 +689,13 @@ void backlight_set(uint8_t level)
TCCR1A &= ~(_BV(COM1x1));
OCR1x = 0x0;
#else
#if BACKLIGHT_ON_STATE == 0
// PORTx |= n
_SFR_IO8((backlight_pin >> 4) + 2) |= _BV(backlight_pin & 0xF);
#else
// PORTx &= ~n
_SFR_IO8((backlight_pin >> 4) + 2) &= ~_BV(backlight_pin & 0xF);
#endif
// #if BACKLIGHT_ON_STATE == 0
// // PORTx |= n
// _SFR_IO8((backlight_pin >> 4) + 2) |= _BV(backlight_pin & 0xF);
// #else
// // PORTx &= ~n
// _SFR_IO8((backlight_pin >> 4) + 2) &= ~_BV(backlight_pin & 0xF);
// #endif
#endif
}
#ifndef NO_BACKLIGHT_CLOCK
@ -711,6 +718,30 @@ void backlight_set(uint8_t level)
#endif
}
uint8_t backlight_tick = 0;
void backlight_task(void) {
#ifdef NO_BACKLIGHT_CLOCK
if ((0xFFFF >> ((BACKLIGHT_LEVELS - backlight_config.level) * ((BACKLIGHT_LEVELS + 1) / 2))) & (1 << backlight_tick)) {
#if BACKLIGHT_ON_STATE == 0
// PORTx &= ~n
_SFR_IO8((backlight_pin >> 4) + 2) &= ~_BV(backlight_pin & 0xF);
#else
// PORTx |= n
_SFR_IO8((backlight_pin >> 4) + 2) |= _BV(backlight_pin & 0xF);
#endif
} else {
#if BACKLIGHT_ON_STATE == 0
// PORTx |= n
_SFR_IO8((backlight_pin >> 4) + 2) |= _BV(backlight_pin & 0xF);
#else
// PORTx &= ~n
_SFR_IO8((backlight_pin >> 4) + 2) &= ~_BV(backlight_pin & 0xF);
#endif
}
backlight_tick = (backlight_tick + 1) % 16;
#endif
}
#ifdef BACKLIGHT_BREATHING

1
quantum/quantum.h
View file

@ -103,6 +103,7 @@ void unregister_code16 (uint16_t code);
#ifdef BACKLIGHT_ENABLE
void backlight_init_ports(void);
void backlight_task(void);
#ifdef BACKLIGHT_BREATHING
void breathing_enable(void);