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-rw-r--r--quantum/backlight/backlight_chibios.c160
1 files changed, 61 insertions, 99 deletions
diff --git a/quantum/backlight/backlight_chibios.c b/quantum/backlight/backlight_chibios.c
index 723544adb9..0fe812bf27 100644
--- a/quantum/backlight/backlight_chibios.c
+++ b/quantum/backlight/backlight_chibios.c
@@ -3,27 +3,37 @@
#include <hal.h>
#include "debug.h"
-// TODO: remove short term bodge when refactoring BACKLIGHT_CUSTOM_DRIVER out
-#ifdef BACKLIGHT_PIN
-
// GPIOV2 && GPIOV3
-# ifndef BACKLIGHT_PAL_MODE
-# define BACKLIGHT_PAL_MODE 2
-# endif
+#ifndef BACKLIGHT_PAL_MODE
+# define BACKLIGHT_PAL_MODE 2
+#endif
// GENERIC
-# ifndef BACKLIGHT_PWM_DRIVER
-# define BACKLIGHT_PWM_DRIVER PWMD4
+#ifndef BACKLIGHT_PWM_DRIVER
+# define BACKLIGHT_PWM_DRIVER PWMD4
+#endif
+#ifndef BACKLIGHT_PWM_CHANNEL
+# define BACKLIGHT_PWM_CHANNEL 3
+#endif
+
+// Support for pins which are on TIM1_CH1N - requires STM32_PWM_USE_ADVANCED
+#ifdef BACKLIGHT_PWM_COMPLEMENTARY_OUTPUT
+# if BACKLIGHT_ON_STATE == 1
+# define PWM_OUTPUT_MODE PWM_COMPLEMENTARY_OUTPUT_ACTIVE_LOW;
+# else
+# define PWM_OUTPUT_MODE PWM_COMPLEMENTARY_OUTPUT_ACTIVE_HIGH;
# endif
-# ifndef BACKLIGHT_PWM_CHANNEL
-# define BACKLIGHT_PWM_CHANNEL 3
+#else
+# if BACKLIGHT_ON_STATE == 1
+# define PWM_OUTPUT_MODE PWM_OUTPUT_ACTIVE_HIGH;
+# else
+# define PWM_OUTPUT_MODE PWM_OUTPUT_ACTIVE_LOW;
# endif
-
-static void breathing_callback(PWMDriver *pwmp);
+#endif
static PWMConfig pwmCFG = {0xFFFF, /* PWM clock frequency */
256, /* PWM period (in ticks) 1S (1/10kHz=0.1mS 0.1ms*10000 ticks=1S) */
- NULL, /* No Callback */
+ NULL, /* Breathing Callback */
{ /* Default all channels to disabled - Channels will be configured durring init */
{PWM_OUTPUT_DISABLED, NULL},
{PWM_OUTPUT_DISABLED, NULL},
@@ -32,17 +42,6 @@ static PWMConfig pwmCFG = {0xFFFF, /* PWM clock frequency */
0, /* HW dependent part.*/
0};
-static PWMConfig pwmCFG_breathing = {0xFFFF, /** PWM clock frequency */
- 256, /* PWM period (in ticks) 1S (1/10kHz=0.1mS 0.1ms*10000 ticks=1S) */
- breathing_callback, /* Breathing Callback */
- { /* Default all channels to disabled - Channels will be configured durring init */
- {PWM_OUTPUT_DISABLED, NULL},
- {PWM_OUTPUT_DISABLED, NULL},
- {PWM_OUTPUT_DISABLED, NULL},
- {PWM_OUTPUT_DISABLED, NULL}},
- 0, /* HW dependent part.*/
- 0};
-
// See http://jared.geek.nz/2013/feb/linear-led-pwm
static uint16_t cie_lightness(uint16_t v) {
if (v <= 5243) // if below 8% of max
@@ -60,125 +59,88 @@ static uint16_t cie_lightness(uint16_t v) {
}
void backlight_init_ports(void) {
- // printf("backlight_init_ports()\n");
-
-# ifdef USE_GPIOV1
+#ifdef USE_GPIOV1
palSetPadMode(PAL_PORT(BACKLIGHT_PIN), PAL_PAD(BACKLIGHT_PIN), PAL_MODE_STM32_ALTERNATE_PUSHPULL);
-# else
+#else
palSetPadMode(PAL_PORT(BACKLIGHT_PIN), PAL_PAD(BACKLIGHT_PIN), PAL_MODE_ALTERNATE(BACKLIGHT_PAL_MODE));
-# endif
+#endif
- pwmCFG.channels[BACKLIGHT_PWM_CHANNEL - 1].mode = PWM_OUTPUT_ACTIVE_HIGH;
- pwmCFG_breathing.channels[BACKLIGHT_PWM_CHANNEL - 1].mode = PWM_OUTPUT_ACTIVE_HIGH;
+ pwmCFG.channels[BACKLIGHT_PWM_CHANNEL - 1].mode = PWM_OUTPUT_MODE;
pwmStart(&BACKLIGHT_PWM_DRIVER, &pwmCFG);
backlight_set(get_backlight_level());
+
+#ifdef BACKLIGHT_BREATHING
if (is_backlight_breathing()) {
breathing_enable();
}
+#endif
}
void backlight_set(uint8_t level) {
- // printf("backlight_set(%d)\n", level);
+ if (level > BACKLIGHT_LEVELS) level = BACKLIGHT_LEVELS;
+
if (level == 0) {
// Turn backlight off
pwmDisableChannel(&BACKLIGHT_PWM_DRIVER, BACKLIGHT_PWM_CHANNEL - 1);
} else {
// Turn backlight on
- if (!is_breathing()) {
- uint32_t duty = (uint32_t)(cie_lightness(0xFFFF * (uint32_t)level / BACKLIGHT_LEVELS));
- // printf("duty: (%d)\n", duty);
- pwmEnableChannel(&BACKLIGHT_PWM_DRIVER, BACKLIGHT_PWM_CHANNEL - 1, PWM_FRACTION_TO_WIDTH(&BACKLIGHT_PWM_DRIVER, 0xFFFF, duty));
- }
+ uint32_t duty = (uint32_t)(cie_lightness(0xFFFF * (uint32_t)level / BACKLIGHT_LEVELS));
+ pwmEnableChannel(&BACKLIGHT_PWM_DRIVER, BACKLIGHT_PWM_CHANNEL - 1, PWM_FRACTION_TO_WIDTH(&BACKLIGHT_PWM_DRIVER, 0xFFFF, duty));
}
}
-uint8_t backlight_tick = 0;
-
void backlight_task(void) {}
-# define BREATHING_NO_HALT 0
-# define BREATHING_HALT_OFF 1
-# define BREATHING_HALT_ON 2
-# define BREATHING_STEPS 128
+#ifdef BACKLIGHT_BREATHING
-static uint8_t breathing_halt = BREATHING_NO_HALT;
-static uint16_t breathing_counter = 0;
-
-bool is_breathing(void) { return BACKLIGHT_PWM_DRIVER.config == &pwmCFG_breathing; }
-
-static inline void breathing_min(void) { breathing_counter = 0; }
+# define BREATHING_STEPS 128
-static inline void breathing_max(void) { breathing_counter = get_breathing_period() * 256 / 2; }
+/* To generate breathing curve in python:
+ * from math import sin, pi; [int(sin(x/128.0*pi)**4*255) for x in range(128)]
+ */
+static const uint8_t breathing_table[BREATHING_STEPS] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 28, 32, 36, 41, 46, 51, 57, 63, 70, 76, 83, 91, 98, 106, 113, 121, 129, 138, 146, 154, 162, 170, 178, 185, 193, 200, 207, 213, 220, 225, 231, 235, 240, 244, 247, 250, 252, 253, 254, 255, 254, 253, 252, 250, 247, 244, 240, 235, 231, 225, 220, 213, 207, 200, 193, 185, 178, 170, 162, 154, 146, 138, 129, 121, 113, 106, 98, 91, 83, 76, 70, 63, 57, 51, 46, 41, 36, 32, 28, 24, 20, 17, 15, 12, 10, 8, 6, 5, 4, 3, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
-void breathing_interrupt_enable(void) {
- pwmStop(&BACKLIGHT_PWM_DRIVER);
- pwmStart(&BACKLIGHT_PWM_DRIVER, &pwmCFG_breathing);
- chSysLockFromISR();
- pwmEnablePeriodicNotification(&BACKLIGHT_PWM_DRIVER);
- pwmEnableChannelI(&BACKLIGHT_PWM_DRIVER, BACKLIGHT_PWM_CHANNEL - 1, PWM_FRACTION_TO_WIDTH(&BACKLIGHT_PWM_DRIVER, 0xFFFF, 0xFFFF));
- chSysUnlockFromISR();
-}
+void breathing_callback(PWMDriver *pwmp);
-void breathing_interrupt_disable(void) {
- pwmStop(&BACKLIGHT_PWM_DRIVER);
- pwmStart(&BACKLIGHT_PWM_DRIVER, &pwmCFG);
-}
+bool is_breathing(void) { return pwmCFG.callback != NULL; }
void breathing_enable(void) {
- breathing_counter = 0;
- breathing_halt = BREATHING_NO_HALT;
- breathing_interrupt_enable();
-}
-
-void breathing_pulse(void) {
- if (get_backlight_level() == 0)
- breathing_min();
- else
- breathing_max();
- breathing_halt = BREATHING_HALT_ON;
- breathing_interrupt_enable();
+ pwmCFG.callback = breathing_callback;
+ pwmEnablePeriodicNotification(&BACKLIGHT_PWM_DRIVER);
}
void breathing_disable(void) {
- // printf("breathing_disable()\n");
- breathing_interrupt_disable();
+ pwmCFG.callback = NULL;
+ pwmDisablePeriodicNotification(&BACKLIGHT_PWM_DRIVER);
+
// Restore backlight level
backlight_set(get_backlight_level());
}
-void breathing_self_disable(void) {
- if (get_backlight_level() == 0)
- breathing_halt = BREATHING_HALT_OFF;
- else
- breathing_halt = BREATHING_HALT_ON;
-}
-
-/* To generate breathing curve in python:
- * from math import sin, pi; [int(sin(x/128.0*pi)**4*255) for x in range(128)]
- */
-static const uint8_t breathing_table[BREATHING_STEPS] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 28, 32, 36, 41, 46, 51, 57, 63, 70, 76, 83, 91, 98, 106, 113, 121, 129, 138, 146, 154, 162, 170, 178, 185, 193, 200, 207, 213, 220, 225, 231, 235, 240, 244, 247, 250, 252, 253, 254, 255, 254, 253, 252, 250, 247, 244, 240, 235, 231, 225, 220, 213, 207, 200, 193, 185, 178, 170, 162, 154, 146, 138, 129, 121, 113, 106, 98, 91, 83, 76, 70, 63, 57, 51, 46, 41, 36, 32, 28, 24, 20, 17, 15, 12, 10, 8, 6, 5, 4, 3, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
-
// Use this before the cie_lightness function.
static inline uint16_t scale_backlight(uint16_t v) { return v / BACKLIGHT_LEVELS * get_backlight_level(); }
-static void breathing_callback(PWMDriver *pwmp) {
- (void)pwmp;
+void breathing_callback(PWMDriver *pwmp) {
uint8_t breathing_period = get_breathing_period();
uint16_t interval = (uint16_t)breathing_period * 256 / BREATHING_STEPS;
- // resetting after one period to prevent ugly reset at overflow.
- breathing_counter = (breathing_counter + 1) % (breathing_period * 256);
- uint8_t index = breathing_counter / interval % BREATHING_STEPS;
- if (((breathing_halt == BREATHING_HALT_ON) && (index == BREATHING_STEPS / 2)) || ((breathing_halt == BREATHING_HALT_OFF) && (index == BREATHING_STEPS - 1))) {
- breathing_interrupt_disable();
- }
-
- uint32_t duty = cie_lightness(scale_backlight(breathing_table[index] * 256));
+ // resetting after one period to prevent ugly reset at overflow.
+ static uint16_t breathing_counter = 0;
+ breathing_counter = (breathing_counter + 1) % (breathing_period * 256);
+ uint8_t index = breathing_counter / interval % BREATHING_STEPS;
+ uint32_t duty = cie_lightness(scale_backlight(breathing_table[index] * 256));
chSysLockFromISR();
- pwmEnableChannelI(&BACKLIGHT_PWM_DRIVER, BACKLIGHT_PWM_CHANNEL - 1, PWM_FRACTION_TO_WIDTH(&BACKLIGHT_PWM_DRIVER, 0xFFFF, duty));
+ pwmEnableChannelI(pwmp, BACKLIGHT_PWM_CHANNEL - 1, PWM_FRACTION_TO_WIDTH(&BACKLIGHT_PWM_DRIVER, 0xFFFF, duty));
chSysUnlockFromISR();
}
+// TODO: integrate generic pulse solution
+void breathing_pulse(void) {
+ backlight_set(is_backlight_enabled() ? 0 : BACKLIGHT_LEVELS);
+ wait_ms(10);
+ backlight_set(is_backlight_enabled() ? get_backlight_level() : 0);
+}
+
#endif
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