diff options
| -rw-r--r-- | quantum/backlight/backlight_chibios.c | 160 |
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 |