diff options
| -rw-r--r-- | shared-module/displayio/I2CDisplay.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/shared-module/displayio/I2CDisplay.c b/shared-module/displayio/I2CDisplay.c index d9452dc50..0307410d1 100644 --- a/shared-module/displayio/I2CDisplay.c +++ b/shared-module/displayio/I2CDisplay.c @@ -42,12 +42,22 @@ void common_hal_displayio_i2cdisplay_construct(displayio_i2cdisplay_obj_t* self, busio_i2c_obj_t* i2c, uint16_t device_address, const mcu_pin_obj_t* reset) { + // Reset the display before probing + 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_displayio_i2cdisplay_reset(self); + } + // Probe the bus to see if a device acknowledges the given address. if (!common_hal_busio_i2c_probe(i2c, device_address)) { mp_raise_ValueError_varg(translate("Unable to find I2C Display at %x"), device_address); } - // Write to the device and return 0 on success or an appropriate error code from mperrno.h + // Write to the device and return 0 on success or an appropriate error code from mperrno.h self->bus = i2c; common_hal_busio_i2c_never_reset(self->bus); // Our object is statically allocated off the heap so make sure the bus object lives to the end @@ -55,15 +65,6 @@ void common_hal_displayio_i2cdisplay_construct(displayio_i2cdisplay_obj_t* self, gc_never_free(self->bus); self->address = device_address; - - 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_displayio_i2cdisplay_reset(self); - } } void common_hal_displayio_i2cdisplay_deinit(displayio_i2cdisplay_obj_t* self) { |