diff options
Diffstat (limited to 'src/drivers/display.cpp')
| -rw-r--r-- | src/drivers/display.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/drivers/display.cpp b/src/drivers/display.cpp index 2ae70d61..efc9df93 100644 --- a/src/drivers/display.cpp +++ b/src/drivers/display.cpp @@ -213,6 +213,12 @@ auto Display::SetDutyCycle(uint_fast8_t new_duty, bool fade) -> void { } void Display::SendInitialisationSequence(const uint8_t* data) { + // Hold the SPI bus for the entire init sequence, as otherwise SD init may + // grab it and delay showing the boot splash. The total time until boot is + // finished may be increased by doing this, but a short boot with no feedback + // feels worse than a longer boot that doesn't tell you anything. + spi_device_acquire_bus(handle_, portMAX_DELAY); + // First byte of the data is the number of commands. for (int i = *(data++); i > 0; i--) { uint8_t command = *(data++); @@ -232,6 +238,8 @@ void Display::SendInitialisationSequence(const uint8_t* data) { vTaskDelay(pdMS_TO_TICKS(sleep_duration_ms)); } } + + spi_device_release_bus(handle_); } void Display::SendCommandWithData(uint8_t command, |