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Enable PWM Support for Planck EZ Indicator Lights (#6473)

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* 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 2019-08-13 10:28:12 -07:00 • committed by GitHub
parent 5004562441
commit 547fbe769c
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GPG key ID: 4AEE18F83AFDEB23
4 changed files with 164 additions and 30 deletions
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167
keyboards/planck/ez/ez.c
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@ -14,6 +14,10 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ez.h"
#include "ch.h"
#include "hal.h"
keyboard_config_t keyboard_config;
#ifdef RGB_MATRIX_ENABLE
const is31_led g_is31_leds[DRIVER_LED_TOTAL] = {
@ -112,39 +116,148 @@ void suspend_power_down_kb(void) {
}
#endif
void matrix_init_kb(void) {
matrix_init_user();
/* Left B9 Right B8 */
palSetPadMode(GPIOB, 8, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOB, 9, PAL_MODE_OUTPUT_PUSHPULL);
palClearPad(GPIOB, 8);
palClearPad(GPIOB, 9);
// 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
return v / 9; // same as dividing by 900%
else {
uint32_t y = (((uint32_t) v + 10486) << 8) / (10486 + 0xFFFFUL); // add 16% of max and compare
// to get a useful result with integer division, we shift left in the expression above
// and revert what we've done again after squaring.
y = y * y * y >> 8;
if (y > 0xFFFFUL) // prevent overflow
return 0xFFFFU;
else
return (uint16_t) y;
}
}
void matrix_scan_kb(void) {
matrix_scan_user();
static PWMConfig pwmCFG = {
0xFFFF,/* PWM clock frequency */
256,/* initial PWM period (in ticks) 1S (1/10kHz=0.1mS 0.1ms*10000 ticks=1S) */
NULL,
{
{PWM_OUTPUT_DISABLED, NULL}, /* channel 0 -> TIM1-CH1 = PA8 */
{PWM_OUTPUT_DISABLED, NULL}, /* channel 1 -> TIM1-CH2 = PA9 */
{PWM_OUTPUT_ACTIVE_HIGH, NULL},
{PWM_OUTPUT_ACTIVE_HIGH, NULL}
},
0, /* HW dependent part.*/
0
};
static uint32_t planck_ez_right_led_duty;
static uint32_t planck_ez_left_led_duty;
void planck_ez_right_led_level(uint8_t level) {
planck_ez_right_led_duty = (uint32_t)(cie_lightness(0xFFFF * (uint32_t) level / 255));
if (level == 0) {
// Turn backlight off
pwmDisableChannel(&PWMD4, 2);
} else {
// Turn backlight on
pwmEnableChannel(&PWMD4, 2, PWM_FRACTION_TO_WIDTH(&PWMD4,0xFFFF,planck_ez_right_led_duty));
}
}
uint32_t layer_state_set_kb(uint32_t state) {
palClearPad(GPIOB, 8);
palClearPad(GPIOB, 9);
state = layer_state_set_user(state);
uint8_t layer = biton32(state);
switch (layer) {
case 3:
palSetPad(GPIOB, 9);
break;
case 4:
palSetPad(GPIOB, 8);
break;
case 6:
palSetPad(GPIOB, 9);
palSetPad(GPIOB, 8);
break;
default:
break;
void planck_ez_right_led_on(void){
pwmEnableChannel(&PWMD4, 2, PWM_FRACTION_TO_WIDTH(&PWMD4,0xFFFF,planck_ez_right_led_duty));
}
void planck_ez_right_led_off(void){
pwmDisableChannel(&PWMD4, 2);
}
void planck_ez_left_led_level(uint8_t level) {
planck_ez_left_led_duty = (uint32_t)(cie_lightness(0xFFFF * (uint32_t) level / 255));
if (level == 0) {
// Turn backlight off
pwmDisableChannel(&PWMD4, 3);
} else {
// Turn backlight on
pwmEnableChannel(&PWMD4, 3, PWM_FRACTION_TO_WIDTH(&PWMD4,0xFFFF,planck_ez_left_led_duty));
}
}
void planck_ez_left_led_on(void){
pwmEnableChannel(&PWMD4, 3, PWM_FRACTION_TO_WIDTH(&PWMD4,0xFFFF,planck_ez_left_led_duty));
}
void planck_ez_left_led_off(void){
pwmDisableChannel(&PWMD4, 3);
}
void led_initialize_hardware(void) {
pwmStart(&PWMD4, &pwmCFG);
// set up defaults
planck_ez_right_led_level((uint8_t)keyboard_config.led_level * 255 / 4 );
palSetPadMode(GPIOB, 8, PAL_MODE_ALTERNATE(2));
planck_ez_left_led_level((uint8_t)keyboard_config.led_level * 255 / 4 );
palSetPadMode(GPIOB, 9, PAL_MODE_ALTERNATE(2));
// turn LEDs off by default
planck_ez_left_led_off();
planck_ez_right_led_off();
}
void keyboard_pre_init_kb(void) {
// read kb settings from eeprom
keyboard_config.raw = eeconfig_read_kb();
// initialize settings for front LEDs
led_initialize_hardware();
}
void eeconfig_init_kb(void) { // EEPROM is getting reset!
keyboard_config.raw = 0;
keyboard_config.led_level = 4;
eeconfig_update_kb(keyboard_config.raw);
eeconfig_init_user();
}
layer_state_t layer_state_set_kb(layer_state_t state) {
planck_ez_left_led_off();
planck_ez_right_led_off();
state = layer_state_set_user(state);
uint8_t layer = biton32(state);
switch (layer) {
case 3:
planck_ez_left_led_on();
break;
case 4:
planck_ez_right_led_on();
break;
case 6:
planck_ez_right_led_on();
planck_ez_left_led_on();
break;
default:
break;
}
return state;
}
bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
switch (keycode) {
case LED_LEVEL:
if (record->event.pressed) {
keyboard_config.led_level++;
if (keyboard_config.led_level > 4) {
keyboard_config.led_level = 0;
}
planck_ez_right_led_level((uint8_t)keyboard_config.led_level * 255 / 4 );
planck_ez_left_led_level((uint8_t)keyboard_config.led_level * 255 / 4 );
eeconfig_update_kb(keyboard_config.raw);
layer_state_set_kb(layer_state);
}
break;
}
return true;
}