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authorJack Humbert <jack.humb@gmail.com>2017-03-15 11:17:07 -0400
committerGitHub <noreply@github.com>2017-03-15 11:17:07 -0400
commitb794719952edafa174a1eea031c3433be820ad29 (patch)
tree63355aa82f53367c51b60f698f081418183da826 /quantum
parentce6dcc2b5d28e8b6fba6fe49f4911616b8353256 (diff)
parentdb1e9a469a8dda068a913fe570c86a1fefc1b4cd (diff)
Merge pull request #1090 from qmk/backlight_softpwm
Adds soft PWM backlight for non-timed ports
Diffstat (limited to 'quantum')
-rw-r--r--quantum/quantum.c59
-rw-r--r--quantum/quantum.h1
2 files changed, 46 insertions, 14 deletions
diff --git a/quantum/quantum.c b/quantum/quantum.c
index 4a6d0355fa..582f8920b1 100644
--- a/quantum/quantum.c
+++ b/quantum/quantum.c
@@ -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
diff --git a/quantum/quantum.h b/quantum/quantum.h
index 580d51202a..259bac3697 100644
--- a/quantum/quantum.h
+++ b/quantum/quantum.h
@@ -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);