1 files changed, 28 insertions, 8 deletions

diff --git a/shared-module/displayio/FourWire.c b/shared-module/displayio/FourWire.c
index 913635db8..fcc4c1a20 100644
--- a/shared-module/displayio/FourWire.c
+++ b/shared-module/displayio/FourWire.c
@@ -33,6 +33,7 @@
 #include "shared-bindings/digitalio/DigitalInOut.h"
 #include "shared-bindings/microcontroller/__init__.h"
 #include "shared-bindings/time/__init__.h"
+#include "shared-module/displayio/display_core.h"
 
 #include "tick.h"
 
@@ -55,15 +56,13 @@ void common_hal_displayio_fourwire_construct(displayio_fourwire_obj_t* self,
     common_hal_digitalio_digitalinout_construct(&self->chip_select, chip_select);
     common_hal_digitalio_digitalinout_switch_to_output(&self->chip_select, true, DRIVE_MODE_PUSH_PULL);
 
+    self->reset.base.type = &mp_type_NoneType;
     if (reset != NULL) {
+        self->reset.base.type = &digitalio_digitalinout_type;
         common_hal_digitalio_digitalinout_construct(&self->reset, reset);
         common_hal_digitalio_digitalinout_switch_to_output(&self->reset, true, DRIVE_MODE_PUSH_PULL);
         never_reset_pin_number(reset->number);
-
-        common_hal_digitalio_digitalinout_set_value(&self->reset, false);
-        common_hal_mcu_delay_us(10);
-        common_hal_digitalio_digitalinout_set_value(&self->reset, true);
-        common_hal_mcu_delay_us(10);
+        common_hal_displayio_fourwire_reset(self);
     }
 
     never_reset_pin_number(command->number);
@@ -80,6 +79,27 @@ void common_hal_displayio_fourwire_deinit(displayio_fourwire_obj_t* self) {
     reset_pin_number(self->reset.pin->number);
 }
 
+bool common_hal_displayio_fourwire_reset(mp_obj_t obj) {
+    displayio_fourwire_obj_t* self = MP_OBJ_TO_PTR(obj);
+    if (self->reset.base.type == &mp_type_NoneType) {
+        return false;
+    }
+    common_hal_digitalio_digitalinout_set_value(&self->reset, false);
+    common_hal_time_delay_ms(1);
+    common_hal_digitalio_digitalinout_set_value(&self->reset, true);
+    common_hal_time_delay_ms(1);
+    return true;
+}
+
+bool common_hal_displayio_fourwire_bus_free(mp_obj_t obj) {
+    displayio_fourwire_obj_t* self = MP_OBJ_TO_PTR(obj);
+    if (!common_hal_busio_spi_try_lock(self->bus)) {
+        return false;
+    }
+    common_hal_busio_spi_unlock(self->bus);
+    return true;
+}
+
 bool common_hal_displayio_fourwire_begin_transaction(mp_obj_t obj) {
     displayio_fourwire_obj_t* self = MP_OBJ_TO_PTR(obj);
     if (!common_hal_busio_spi_try_lock(self->bus)) {
@@ -91,10 +111,10 @@ bool common_hal_displayio_fourwire_begin_transaction(mp_obj_t obj) {
     return true;
 }
 
-void common_hal_displayio_fourwire_send(mp_obj_t obj, bool command, uint8_t *data, uint32_t data_length) {
+void common_hal_displayio_fourwire_send(mp_obj_t obj, display_byte_type_t data_type, display_chip_select_behavior_t chip_select, uint8_t *data, uint32_t data_length) {
     displayio_fourwire_obj_t* self = MP_OBJ_TO_PTR(obj);
-    common_hal_digitalio_digitalinout_set_value(&self->command, !command);
-    if (command) {
+    common_hal_digitalio_digitalinout_set_value(&self->command, data_type == DISPLAY_DATA);
+    if (chip_select == CHIP_SELECT_TOGGLE_EVERY_BYTE) {
         // Toggle chip select after each command byte in case the display driver
         // IC latches commands based on it.
         for (size_t i = 0; i < data_length; i++) {