pinetime/InfiniTime
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Apply display driver datasheet delays

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This commit is contained in:
mark9064 2024-01-30 23:29:16 +00:00 committed by JF
parent 7e460d3c80
commit 7b1110187e
2 changed files with 45 additions and 9 deletions
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47
src/drivers/St7789.cpp
View file

@ -1,7 +1,4 @@
#include "drivers/St7789.h"
#include <hal/nrf_gpio.h>
#include <nrfx_log.h>
#include "drivers/Spi.h"
using namespace Pinetime::Drivers;
@ -53,22 +50,52 @@ void St7789::WriteSpi(const uint8_t* data, size_t size, const std::function<void
}
void St7789::SoftwareReset() {
EnsureSleepOutPostDelay();
WriteCommand(static_cast<uint8_t>(Commands::SoftwareReset));
vTaskDelay(pdMS_TO_TICKS(150));
// If sleep in: must wait 120ms before sleep out can sent (see driver datasheet)
// Unconditionally wait as software reset doesn't need to be performant
sleepIn = true;
lastSleepExit = xTaskGetTickCount();
vTaskDelay(pdMS_TO_TICKS(125));
}
void St7789::SleepOut() {
if (!sleepIn) {
return;
}
WriteCommand(static_cast<uint8_t>(Commands::SleepOut));
// Wait 5ms for clocks to stabilise
// pdMS rounds down => 6 used here
vTaskDelay(pdMS_TO_TICKS(6));
// Cannot send sleep in or software reset for 120ms
lastSleepExit = xTaskGetTickCount();
sleepIn = false;
}
void St7789::EnsureSleepOutPostDelay() {
TickType_t delta = xTaskGetTickCount() - lastSleepExit;
// Due to timer wraparound, there is a chance of delaying when not necessary
// It is very low (pdMS_TO_TICKS(125)/2^32) and waiting an extra 125ms isn't too bad
if (delta < pdMS_TO_TICKS(125)) {
vTaskDelay(pdMS_TO_TICKS(125) - delta);
}
}
void St7789::SleepIn() {
if (sleepIn) {
return;
}
EnsureSleepOutPostDelay();
WriteCommand(static_cast<uint8_t>(Commands::SleepIn));
// Wait 5ms for clocks to stabilise
// pdMS rounds down => 6 used here
vTaskDelay(pdMS_TO_TICKS(6));
sleepIn = true;
}
void St7789::ColMod() {
WriteCommand(static_cast<uint8_t>(Commands::ColMod));
WriteData(0x55);
vTaskDelay(pdMS_TO_TICKS(10));
}
void St7789::MemoryDataAccessControl() {
@ -105,12 +132,10 @@ void St7789::RowAddressSet() {
void St7789::DisplayInversionOn() {
WriteCommand(static_cast<uint8_t>(Commands::DisplayInversionOn));
vTaskDelay(pdMS_TO_TICKS(10));
}
void St7789::NormalModeOn() {
WriteCommand(static_cast<uint8_t>(Commands::NormalModeOn));
vTaskDelay(pdMS_TO_TICKS(10));
}
void St7789::DisplayOn() {
@ -145,7 +170,6 @@ void St7789::SetVdv() {
void St7789::DisplayOff() {
WriteCommand(static_cast<uint8_t>(Commands::DisplayOff));
vTaskDelay(pdMS_TO_TICKS(500));
}
void St7789::VerticalScrollStartAddress(uint16_t line) {
@ -165,8 +189,13 @@ void St7789::DrawBuffer(uint16_t x, uint16_t y, uint16_t width, uint16_t height,
void St7789::HardwareReset() {
nrf_gpio_pin_clear(pinReset);
vTaskDelay(pdMS_TO_TICKS(10));
vTaskDelay(pdMS_TO_TICKS(1));
nrf_gpio_pin_set(pinReset);
// If hardware reset started while sleep out, reset time may be up to 120ms
// Unconditionally wait as hardware reset doesn't need to be performant
sleepIn = true;
lastSleepExit = xTaskGetTickCount();
vTaskDelay(pdMS_TO_TICKS(125));
}
void St7789::Sleep() {

7
src/drivers/St7789.h
View file

@ -3,6 +3,10 @@
#include <cstdint>
#include <functional>
#include <hal/nrf_gpio.h>
#include <nrfx_log.h>
#include "drivers/Spi.h"
namespace Pinetime {
namespace Drivers {
class Spi;
@ -30,10 +34,13 @@ namespace Pinetime {
uint8_t pinDataCommand;
uint8_t pinReset;
uint8_t verticalScrollingStartAddress = 0;
bool sleepIn;
TickType_t lastSleepExit;
void HardwareReset();
void SoftwareReset();
void SleepOut();
void EnsureSleepOutPostDelay();
void SleepIn();
void ColMod();
void MemoryDataAccessControl();