Enable PWM Support for Planck EZ Indicator Lights (#6473)
* remove led layer code * enable PWM on STM32F303 * Unusable PWM code * Updated PWM Stuff? * PWM Semi-working * Both LEDs working at the same time * Update names * Add led level functions * Add LED levels and persistent settings * Revert change due to issues with timing related code * Review feedback and minor cleanup
This commit is contained in:
Drashna Jaelre
GitHub
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5004562441
commit
547fbe769c
4 changed files with 164 additions and 30 deletions
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@ -14,6 +14,10 @@
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "ez.h"
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#include "ch.h"
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#include "hal.h"
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keyboard_config_t keyboard_config;
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#ifdef RGB_MATRIX_ENABLE
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const is31_led g_is31_leds[DRIVER_LED_TOTAL] = {
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@ -112,39 +116,148 @@ void suspend_power_down_kb(void) {
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}
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#endif
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void matrix_init_kb(void) {
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matrix_init_user();
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/* Left B9 Right B8 */
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palSetPadMode(GPIOB, 8, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOB, 9, PAL_MODE_OUTPUT_PUSHPULL);
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palClearPad(GPIOB, 8);
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palClearPad(GPIOB, 9);
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// See http://jared.geek.nz/2013/feb/linear-led-pwm
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static uint16_t cie_lightness(uint16_t v) {
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if (v <= 5243) // if below 8% of max
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return v / 9; // same as dividing by 900%
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else {
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uint32_t y = (((uint32_t) v + 10486) << 8) / (10486 + 0xFFFFUL); // add 16% of max and compare
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// to get a useful result with integer division, we shift left in the expression above
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// and revert what we've done again after squaring.
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y = y * y * y >> 8;
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if (y > 0xFFFFUL) // prevent overflow
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return 0xFFFFU;
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else
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return (uint16_t) y;
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}
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}
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void matrix_scan_kb(void) {
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matrix_scan_user();
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static PWMConfig pwmCFG = {
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0xFFFF,/* PWM clock frequency */
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256,/* initial PWM period (in ticks) 1S (1/10kHz=0.1mS 0.1ms*10000 ticks=1S) */
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NULL,
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{
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{PWM_OUTPUT_DISABLED, NULL}, /* channel 0 -> TIM1-CH1 = PA8 */
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{PWM_OUTPUT_DISABLED, NULL}, /* channel 1 -> TIM1-CH2 = PA9 */
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{PWM_OUTPUT_ACTIVE_HIGH, NULL},
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{PWM_OUTPUT_ACTIVE_HIGH, NULL}
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},
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0, /* HW dependent part.*/
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0
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};
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static uint32_t planck_ez_right_led_duty;
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static uint32_t planck_ez_left_led_duty;
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void planck_ez_right_led_level(uint8_t level) {
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planck_ez_right_led_duty = (uint32_t)(cie_lightness(0xFFFF * (uint32_t) level / 255));
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if (level == 0) {
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// Turn backlight off
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pwmDisableChannel(&PWMD4, 2);
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} else {
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// Turn backlight on
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pwmEnableChannel(&PWMD4, 2, PWM_FRACTION_TO_WIDTH(&PWMD4,0xFFFF,planck_ez_right_led_duty));
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}
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}
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uint32_t layer_state_set_kb(uint32_t state) {
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palClearPad(GPIOB, 8);
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palClearPad(GPIOB, 9);
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void planck_ez_right_led_on(void){
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pwmEnableChannel(&PWMD4, 2, PWM_FRACTION_TO_WIDTH(&PWMD4,0xFFFF,planck_ez_right_led_duty));
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}
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void planck_ez_right_led_off(void){
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pwmDisableChannel(&PWMD4, 2);
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}
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void planck_ez_left_led_level(uint8_t level) {
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planck_ez_left_led_duty = (uint32_t)(cie_lightness(0xFFFF * (uint32_t) level / 255));
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if (level == 0) {
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// Turn backlight off
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pwmDisableChannel(&PWMD4, 3);
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} else {
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// Turn backlight on
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pwmEnableChannel(&PWMD4, 3, PWM_FRACTION_TO_WIDTH(&PWMD4,0xFFFF,planck_ez_left_led_duty));
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}
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}
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void planck_ez_left_led_on(void){
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pwmEnableChannel(&PWMD4, 3, PWM_FRACTION_TO_WIDTH(&PWMD4,0xFFFF,planck_ez_left_led_duty));
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}
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void planck_ez_left_led_off(void){
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pwmDisableChannel(&PWMD4, 3);
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}
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void led_initialize_hardware(void) {
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pwmStart(&PWMD4, &pwmCFG);
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// set up defaults
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planck_ez_right_led_level((uint8_t)keyboard_config.led_level * 255 / 4 );
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palSetPadMode(GPIOB, 8, PAL_MODE_ALTERNATE(2));
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planck_ez_left_led_level((uint8_t)keyboard_config.led_level * 255 / 4 );
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palSetPadMode(GPIOB, 9, PAL_MODE_ALTERNATE(2));
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// turn LEDs off by default
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planck_ez_left_led_off();
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planck_ez_right_led_off();
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}
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void keyboard_pre_init_kb(void) {
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// read kb settings from eeprom
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keyboard_config.raw = eeconfig_read_kb();
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// initialize settings for front LEDs
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led_initialize_hardware();
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}
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void eeconfig_init_kb(void) { // EEPROM is getting reset!
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keyboard_config.raw = 0;
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keyboard_config.led_level = 4;
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eeconfig_update_kb(keyboard_config.raw);
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eeconfig_init_user();
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}
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layer_state_t layer_state_set_kb(layer_state_t state) {
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planck_ez_left_led_off();
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planck_ez_right_led_off();
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state = layer_state_set_user(state);
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uint8_t layer = biton32(state);
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switch (layer) {
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case 3:
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palSetPad(GPIOB, 9);
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planck_ez_left_led_on();
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break;
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case 4:
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palSetPad(GPIOB, 8);
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planck_ez_right_led_on();
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break;
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case 6:
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palSetPad(GPIOB, 9);
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palSetPad(GPIOB, 8);
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planck_ez_right_led_on();
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planck_ez_left_led_on();
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break;
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default:
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break;
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}
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return state;
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}
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bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
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switch (keycode) {
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case LED_LEVEL:
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if (record->event.pressed) {
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keyboard_config.led_level++;
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if (keyboard_config.led_level > 4) {
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keyboard_config.led_level = 0;
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}
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planck_ez_right_led_level((uint8_t)keyboard_config.led_level * 255 / 4 );
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planck_ez_left_led_level((uint8_t)keyboard_config.led_level * 255 / 4 );
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eeconfig_update_kb(keyboard_config.raw);
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layer_state_set_kb(layer_state);
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}
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break;
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}
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return true;
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}
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@ -50,3 +50,24 @@ LAYOUT_planck_1x2uC( \
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#define KEYMAP LAYOUT_ortho_4x12
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#define LAYOUT_planck_mit LAYOUT_planck_1x2uC
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#define LAYOUT_planck_grid LAYOUT_ortho_4x12
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void planck_ez_right_led_on(void);
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void planck_ez_right_led_off(void);
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void planck_ez_right_led_level(uint8_t level);
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void planck_ez_left_led_on(void);
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void planck_ez_left_led_off(void);
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void planck_ez_left_led_level(uint8_t level);
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enum planck_ez_keycodes {
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LED_LEVEL = SAFE_RANGE,
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EZ_SAFE_RANGE,
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};
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typedef union {
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uint32_t raw;
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struct {
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uint8_t led_level :3;
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};
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} keyboard_config_t;
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extern keyboard_config_t keyboard_config;
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@ -111,7 +111,7 @@
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* @brief Enables the PWM subsystem.
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*/
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#if !defined(HAL_USE_PWM) || defined(__DOXYGEN__)
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#define HAL_USE_PWM FALSE
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#define HAL_USE_PWM TRUE
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#endif
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/**
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@ -183,9 +183,9 @@
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*/
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#define STM32_PWM_USE_ADVANCED FALSE
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#define STM32_PWM_USE_TIM1 FALSE
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#define STM32_PWM_USE_TIM2 TRUE
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#define STM32_PWM_USE_TIM2 FALSE
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#define STM32_PWM_USE_TIM3 TRUE
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#define STM32_PWM_USE_TIM4 FALSE
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#define STM32_PWM_USE_TIM4 TRUE
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#define STM32_PWM_USE_TIM8 FALSE
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#define STM32_PWM_TIM1_IRQ_PRIORITY 7
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#define STM32_PWM_TIM2_IRQ_PRIORITY 7
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