haptic: Feature to disable it when usb port is not configured or susp…

…ended. This also add support for specifying a LED pin to indicate haptic status, and also adds support for a haptic-enable pin, which is useful to turn off the boost converter on the solenoid driver.
qmk · Nov 2, 2021 · 51b2d2f · 51b2d2f
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Showing 7 changed files with 115 additions and 11 deletions.
diff --git a/docs/feature_haptic_feedback.md b/docs/feature_haptic_feedback.md
@@ -11,6 +11,16 @@ HAPTIC_DRIVER += DRV2605L
 HAPTIC_DRIVER += SOLENOID
 ```
 
+The following `config.h` settings are available for all types of haptic feedback:
+
+| Settings                             | Default       | Description                                                                                                   |
+|--------------------------------------|---------------|---------------------------------------------------------------------------------------------------------------|
+|`HAPTIC_ENABLE_PIN`                   | *Not defined* |Configures a pin to enable a boost converter for some haptic solution, often used with solenoid drivers.       |
+|`HAPTIC_ENABLE_PIN_ACTIVE_LOW`        | *Not defined* |If defined then the haptic enable pin is active-low.                                                           |
+|`HAPTIC_ENABLE_STATUS_LED`            | *Not defined* |Configures a pin to reflect the current enabled/disabled status of haptic feedback.                            |
+|`HAPTIC_ENABLE_STATUS_LED_ACTIVE_LOW` | *Not defined* |If defined then the haptic status led will be active-low.                                                      |
+|`HAPTIC_OFF_IN_LOW_POWER`             | `0`           |If set to `1`, haptic feedback is disabled before the device is configured, and while the device is suspended. |
+
 ## Known Supported Hardware
 
 | Name               | Description                                     |
@@ -48,6 +58,7 @@ First you will need a build a circuit to drive the solenoid through a mosfet as
 | Settings                   | Default              | Description                                           |
 |----------------------------|----------------------|-------------------------------------------------------|
 |`SOLENOID_PIN`              | *Not defined*        |Configures the pin that the Solenoid is connected to.  |
+|`SOLENOID_PIN_ACTIVE_LOW`   | *Not defined*        |If defined then the solenoid trigger pin is active low.|
 |`SOLENOID_DEFAULT_DWELL`    | `12` ms              |Configures the default dwell time for the solenoid.    |
 |`SOLENOID_MIN_DWELL`        | `4` ms               |Sets the lower limit for the dwell.                    |
 |`SOLENOID_MAX_DWELL`        | `100` ms             |Sets the upper limit for the dwell.                    |

diff --git a/drivers/haptic/solenoid.c b/drivers/haptic/solenoid.c
@@ -19,6 +19,7 @@
 #include "solenoid.h"
 #include "haptic.h"
 #include "gpio.h"
+#include "usb_device_state.h"
 
 bool     solenoid_on      = false;
 bool     solenoid_buzzing = false;
@@ -36,7 +37,7 @@ void solenoid_set_buzz(int buzz) { haptic_set_buzz(buzz); }
 void solenoid_set_dwell(uint8_t dwell) { solenoid_dwell = dwell; }
 
 void solenoid_stop(void) {
-    writePinLow(SOLENOID_PIN);
+    SOLENOID_PIN_WRITE_INACTIVE();
     solenoid_on      = false;
     solenoid_buzzing = false;
 }
@@ -48,7 +49,7 @@ void solenoid_fire(void) {
     solenoid_on      = true;
     solenoid_buzzing = true;
     solenoid_start   = timer_read();
-    writePinHigh(SOLENOID_PIN);
+    SOLENOID_PIN_WRITE_ACTIVE();
 }
 
 void solenoid_check(void) {
@@ -69,20 +70,23 @@ void solenoid_check(void) {
         if ((elapsed % (SOLENOID_BUZZ_ACTUATED + SOLENOID_BUZZ_NONACTUATED)) < SOLENOID_BUZZ_ACTUATED) {
             if (!solenoid_buzzing) {
                 solenoid_buzzing = true;
-                writePinHigh(SOLENOID_PIN);
+                SOLENOID_PIN_WRITE_ACTIVE();
             }
         } else {
             if (solenoid_buzzing) {
                 solenoid_buzzing = false;
-                writePinLow(SOLENOID_PIN);
+                SOLENOID_PIN_WRITE_INACTIVE();
             }
         }
     }
 }
 
 void solenoid_setup(void) {
+    SOLENOID_PIN_WRITE_INACTIVE();
     setPinOutput(SOLENOID_PIN);
-    solenoid_fire();
+    if ((!HAPTIC_OFF_IN_LOW_POWER) || (usb_device_state == USB_DEVICE_STATE_CONFIGURED)) {
+        solenoid_fire();
+    }
 }
 
-void solenoid_shutdown(void) { writePinLow(SOLENOID_PIN); }
+void solenoid_shutdown(void) { SOLENOID_PIN_WRITE_INACTIVE(); }
diff --git a/drivers/haptic/solenoid.h b/drivers/haptic/solenoid.h
@@ -49,6 +49,14 @@
 #    error SOLENOID_PIN not defined
 #endif
 
+#ifdef SOLENOID_PIN_ACTIVE_LOW
+#    define SOLENOID_PIN_WRITE_ACTIVE() writePinLow(SOLENOID_PIN)
+#    define SOLENOID_PIN_WRITE_INACTIVE() writePinHigh(SOLENOID_PIN)
+#else
+#    define SOLENOID_PIN_WRITE_ACTIVE() writePinHigh(SOLENOID_PIN)
+#    define SOLENOID_PIN_WRITE_INACTIVE() writePinLow(SOLENOID_PIN)
+#endif
+
 void solenoid_buzz_on(void);
 void solenoid_buzz_off(void);
 void solenoid_set_buzz(int buzz);

diff --git a/quantum/haptic.c b/quantum/haptic.c
@@ -17,6 +17,8 @@
 #include "haptic.h"
 #include "eeconfig.h"
 #include "debug.h"
+#include "usb_device_state.h"
+#include "gpio.h"
 #ifdef DRV2605L
 #    include "DRV2605L.h"
 #endif
@@ -26,6 +28,29 @@
 
 haptic_config_t haptic_config;
 
+static void update_haptic_enable_gpios(void) {
+    if (haptic_config.enable && ((!HAPTIC_OFF_IN_LOW_POWER) || (usb_device_state == USB_DEVICE_STATE_CONFIGURED))) {
+#if defined(HAPTIC_ENABLE_PIN)
+        HAPTIC_ENABLE_PIN_WRITE_ACTIVE();
+#endif
+#if defined(HAPTIC_ENABLE_STATUS_LED)
+        HAPTIC_ENABLE_STATUS_LED_WRITE_ACTIVE();
+#endif
+    } else {
+#if defined(HAPTIC_ENABLE_PIN)
+        HAPTIC_ENABLE_PIN_WRITE_INACTIVE();
+#endif
+#if defined(HAPTIC_ENABLE_STATUS_LED)
+        HAPTIC_ENABLE_STATUS_LED_WRITE_INACTIVE();
+#endif
+    }
+}
+
+static void set_haptic_config_enable(bool enabled) {
+    haptic_config.enable = enabled;
+    update_haptic_enable_gpios();
+}
+
 void haptic_init(void) {
     if (!eeconfig_is_enabled()) {
         eeconfig_init();
@@ -44,6 +69,10 @@ void haptic_init(void) {
         // or the previous firmware didn't have solenoid enabled,
         // and the current one has solenoid enabled.
         haptic_reset();
+    } else {
+        // Haptic configuration has been loaded through the "raw" union item.
+        // This is to execute any side effects of the configuration.
+        set_haptic_config_enable(haptic_config.enable);
     }
 #ifdef SOLENOID_ENABLE
     solenoid_setup();
@@ -54,6 +83,12 @@ void haptic_init(void) {
     dprintf("DRV2605 driver initialized\n");
 #endif
     eeconfig_debug_haptic();
+#ifdef HAPTIC_ENABLE_PIN
+    setPinOutput(HAPTIC_ENABLE_PIN);
+#endif
+#ifdef HAPTIC_ENABLE_STATUS_LED
+    setPinOutput(HAPTIC_ENABLE_STATUS_LED);
+#endif
 }
 
 void haptic_task(void) {
@@ -69,13 +104,13 @@ void eeconfig_debug_haptic(void) {
 }
 
 void haptic_enable(void) {
-    haptic_config.enable = 1;
+    set_haptic_config_enable(true);
     xprintf("haptic_config.enable = %u\n", haptic_config.enable);
     eeconfig_update_haptic(haptic_config.raw);
 }
 
 void haptic_disable(void) {
-    haptic_config.enable = 0;
+    set_haptic_config_enable(false);
     xprintf("haptic_config.enable = %u\n", haptic_config.enable);
     eeconfig_update_haptic(haptic_config.raw);
 }
@@ -157,7 +192,7 @@ void haptic_dwell_decrease(void) {
 }
 
 void haptic_reset(void) {
-    haptic_config.enable   = true;
+    set_haptic_config_enable(true);
     uint8_t feedback       = HAPTIC_FEEDBACK_DEFAULT;
     haptic_config.feedback = feedback;
 #ifdef DRV2605L
@@ -293,3 +328,13 @@ void haptic_shutdown(void) {
     solenoid_shutdown();
 #endif
 }
+
+void haptic_notify_usb_device_state_change(void) {
+    update_haptic_enable_gpios();
+#if defined(HAPTIC_ENABLE_PIN)
+    setPinOutput(HAPTIC_ENABLE_PIN);
+#endif
+#if defined(HAPTIC_ENABLE_STATUS_LED)
+    setPinOutput(HAPTIC_ENABLE_STATUS_LED);
+#endif
+}
diff --git a/quantum/haptic.h b/quantum/haptic.h
@@ -75,3 +75,30 @@ void    haptic_cont_decrease(void);
 
 void haptic_play(void);
 void haptic_shutdown(void);
+void haptic_notify_usb_device_state_change(void);
+
+#ifdef HAPTIC_ENABLE_PIN_ACTIVE_LOW
+#    ifndef HAPTIC_ENABLE_PIN
+#        error HAPTIC_ENABLE_PIN not defined
+#    endif
+#    define HAPTIC_ENABLE_PIN_WRITE_ACTIVE() writePinLow(HAPTIC_ENABLE_PIN)
+#    define HAPTIC_ENABLE_PIN_WRITE_INACTIVE() writePinHigh(HAPTIC_ENABLE_PIN)
+#else
+#    define HAPTIC_ENABLE_PIN_WRITE_ACTIVE() writePinHigh(HAPTIC_ENABLE_PIN)
+#    define HAPTIC_ENABLE_PIN_WRITE_INACTIVE() writePinLow(HAPTIC_ENABLE_PIN)
+#endif
+
+#ifdef HAPTIC_ENABLE_STATUS_LED_ACTIVE_LOW
+#    ifndef HAPTIC_ENABLE_STATUS_LED
+#        error HAPTIC_ENABLE_STATUS_LED not defined
+#    endif
+#    define HAPTIC_ENABLE_STATUS_LED_WRITE_ACTIVE() writePinLow(HAPTIC_ENABLE_STATUS_LED)
+#    define HAPTIC_ENABLE_STATUS_LED_WRITE_INACTIVE() writePinHigh(HAPTIC_ENABLE_STATUS_LED)
+#else
+#    define HAPTIC_ENABLE_STATUS_LED_WRITE_ACTIVE() writePinHigh(HAPTIC_ENABLE_STATUS_LED)
+#    define HAPTIC_ENABLE_STATUS_LED_WRITE_INACTIVE() writePinLow(HAPTIC_ENABLE_STATUS_LED)
+#endif
+
+#ifndef HAPTIC_OFF_IN_LOW_POWER
+#    define HAPTIC_OFF_IN_LOW_POWER 0
+#endif
diff --git a/quantum/process_keycode/process_haptic.c b/quantum/process_keycode/process_haptic.c
@@ -17,6 +17,7 @@
 #include "process_haptic.h"
 #include "quantum_keycodes.h"
 #include "action_tapping.h"
+#include "usb_device_state.h"
 
 __attribute__((weak)) bool get_haptic_enabled_key(uint16_t keycode, keyrecord_t *record) {
     switch (keycode) {
@@ -131,7 +132,7 @@ bool process_haptic(uint16_t keycode, keyrecord_t *record) {
         }
     }
 
-    if (haptic_get_enable()) {
+    if (haptic_get_enable() && ((!HAPTIC_OFF_IN_LOW_POWER) || (usb_device_state == USB_DEVICE_STATE_CONFIGURED))) {
         if (record->event.pressed) {
             // keypress
             if (haptic_get_feedback() < 2 && get_haptic_enabled_key(keycode, record)) {

diff --git a/tmk_core/protocol/usb_device_state.c b/tmk_core/protocol/usb_device_state.c
@@ -16,14 +16,22 @@
  */
 
 #include "usb_device_state.h"
+#if defined(HAPTIC_ENABLE)
+#    include "haptic.h"
+#endif
 
 enum usb_device_state usb_device_state = USB_DEVICE_STATE_NO_INIT;
 
 __attribute__((weak)) void notify_usb_device_state_change_kb(enum usb_device_state usb_device_state) { notify_usb_device_state_change_user(usb_device_state); }
 
 __attribute__((weak)) void notify_usb_device_state_change_user(enum usb_device_state usb_device_state) {}
 
-static void notify_usb_device_state_change(enum usb_device_state usb_device_state) { notify_usb_device_state_change_kb(usb_device_state); }
+static void notify_usb_device_state_change(enum usb_device_state usb_device_state) {
+#if defined(HAPTIC_ENABLE) && HAPTIC_OFF_IN_LOW_POWER
+    haptic_notify_usb_device_state_change();
+#endif
+    notify_usb_device_state_change_kb(usb_device_state);
+}
 
 void usb_device_state_set_configuration(bool isConfigured, uint8_t configurationNumber) {
     usb_device_state = isConfigured ? USB_DEVICE_STATE_CONFIGURED : USB_DEVICE_STATE_INIT;