Merge pull request #19 from JF002/spi-dma

Spi dma

CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.10)
-project(pinetime VERSION 0.2.0 LANGUAGES C CXX ASM)
+project(pinetime VERSION 0.2.1 LANGUAGES C CXX ASM)
 
 set(NRF_TARGET "nrf52")
 

src/Components/Gfx/Gfx.cpp

@@ -1,4 +1,6 @@
 #include <libraries/svc/nrf_svci.h>
+#include <FreeRTOS.h>
+#include <task.h>
 #include "Gfx.h"
 #include "../../drivers/St7789.h"
 using namespace Pinetime::Components;
@@ -7,15 +9,38 @@ Gfx::Gfx(Pinetime::Drivers::St7789 &lcd) : lcd{lcd} {
 }
 
 void Gfx::Init() {
-  lcd.Init();
+
 }
 
 void Gfx::ClearScreen() {
-  lcd.FillRectangle(0, 0, width, height, 0x0000);
+  SetBackgroundColor(0x0000);
+
+  state.remainingIterations = 240 + 1;
+  state.currentIteration = 0;
+  state.busy = true;
+  state.action = Action::FillRectangle;
+  state.taskToNotify = xTaskGetCurrentTaskHandle();
+
+  lcd.BeginDrawBuffer(0, 0, width, height);
+  lcd.NextDrawBuffer(reinterpret_cast<const uint8_t *>(buffer), width * 2);
+  WaitTransfertFinished();
+
 }
 
-void Gfx::FillRectangle(uint8_t x, uint8_t y, uint8_t width, uint8_t height, uint16_t color) {
+void Gfx::FillRectangle(uint8_t x, uint8_t y, uint8_t w, uint8_t h, uint16_t color) {
-  lcd.FillRectangle(x, y, width, height, color);
+  SetBackgroundColor(color);
+
+  state.remainingIterations = 240 + 1;
+  state.currentIteration = 0;
+  state.busy = true;
+  state.action = Action::FillRectangle;
+  state.color = color;
+  state.taskToNotify = xTaskGetCurrentTaskHandle();
+
+  lcd.BeginDrawBuffer(x, y, w, h);
+  lcd.NextDrawBuffer(reinterpret_cast<const uint8_t *>(buffer), width * 2);
+
+  WaitTransfertFinished();
 }
 
 void Gfx::DrawString(uint8_t x, uint8_t y, uint16_t color, const char *text, const FONT_INFO *p_font, bool wrap) {
@@ -56,31 +81,38 @@ void Gfx::DrawString(uint8_t x, uint8_t y, uint16_t color, const char *text, con
 void Gfx::DrawChar(const FONT_INFO *font, uint8_t c, uint8_t *x, uint8_t y, uint16_t color) {
   uint8_t char_idx = c - font->startChar;
   uint16_t bytes_in_line = CEIL_DIV(font->charInfo[char_idx].widthBits, 8);
+  uint16_t bg = 0x0000;
 
   if (c == ' ') {
     *x += font->height / 2;
     return;
   }
 
-  // TODO For now, LCD and SPI driver start a new transfer (cs pin + set address windows + write byte) FOR EACH PIXEL!
+  // Build first line
-  // This could be improved by setting CS pin, DC pin and address window ONLY ONCE for the whole character
+  for (uint16_t j = 0; j < bytes_in_line; j++) {
-
+    for (uint8_t k = 0; k < 8; k++) {
-  lcd.BeginDrawBuffer(*x, y, bytes_in_line*8, font->height);
+      if ((1 << (7 - k)) & font->data[font->charInfo[char_idx].offset + j]) {
-  uint16_t bg = 0x0000;
+        buffer[(j*8)+k] = color;
-  for (uint16_t i = 0; i < font->height; i++) {
+      }
-    for (uint16_t j = 0; j < bytes_in_line; j++) {
+      else {
-      for (uint8_t k = 0; k < 8; k++) {
+        buffer[(j*8)+k] = bg;
-        if ((1 << (7 - k)) &
-            font->data[font->charInfo[char_idx].offset + i * bytes_in_line + j]) {
-          lcd.NextDrawBuffer(reinterpret_cast<uint8_t *>(&color), 2);
-        }
-        else {
-          lcd.NextDrawBuffer(reinterpret_cast<uint8_t *>(&bg), 2);
-        }
       }
     }
   }
-  lcd.EndDrawBuffer();
+
+  state.remainingIterations = font->height + 0;
+  state.currentIteration = 0;
+  state.busy = true;
+  state.action = Action::DrawChar;
+  state.font = const_cast<FONT_INFO *>(font);
+  state.character = c;
+  state.color = color;
+  state.taskToNotify = xTaskGetCurrentTaskHandle();
+
+  lcd.BeginDrawBuffer(*x, y, bytes_in_line*8, font->height);
+  lcd.NextDrawBuffer(reinterpret_cast<const uint8_t *>(&buffer), bytes_in_line*8*2);
+  WaitTransfertFinished();
+
   *x += font->charInfo[char_idx].widthBits + font->spacePixels;
 }
 
@@ -96,4 +128,59 @@ void Gfx::Wakeup() {
   lcd.Wakeup();
 }
 
+void Gfx::SetBackgroundColor(uint16_t color) {
+  for(int i = 0; i < width; i++) {
+    buffer[i] = color;
+  }
+}
+
+bool Gfx::GetNextBuffer(uint8_t **data, size_t &size) {
+  if(!state.busy) return false;
+  state.remainingIterations--;
+  if (state.remainingIterations == 0) {
+    state.busy = false;
+    NotifyEndOfTransfert(state.taskToNotify);
+    return false;
+  }
+
+  if(state.action == Action::FillRectangle) {
+    *data = reinterpret_cast<uint8_t *>(buffer);
+    size = width * 2;
+  } else if(state.action == Action::DrawChar) {
+    uint16_t bg = 0x0000;
+    uint8_t char_idx = state.character - state.font->startChar;
+    uint16_t bytes_in_line = CEIL_DIV(state.font->charInfo[char_idx].widthBits, 8);
+
+    for (uint16_t j = 0; j < bytes_in_line; j++) {
+      for (uint8_t k = 0; k < 8; k++) {
+        if ((1 << (7 - k)) & state.font->data[state.font->charInfo[char_idx].offset + ((state.currentIteration+1) * bytes_in_line) + j]) {
+          buffer[(j*8)+k] = state.color;
+        }
+        else {
+          buffer[(j*8)+k] = bg;
+        }
+      }
+    }
+
+    *data = reinterpret_cast<uint8_t *>(buffer);
+    size = bytes_in_line*8*2;
+  }
+
+  state.currentIteration++;
+
+  return true;
+}
+
+void Gfx::NotifyEndOfTransfert(TaskHandle_t task) {
+  if(task != nullptr) {
+    BaseType_t xHigherPriorityTaskWoken = pdFALSE;
+    vTaskNotifyGiveFromISR(task, &xHigherPriorityTaskWoken);
+    portYIELD_FROM_ISR(xHigherPriorityTaskWoken);
+  }
+}
+
+void Gfx::WaitTransfertFinished() const {
+  ulTaskNotifyTake(pdTRUE, 500);
+}
+
 

src/Components/Gfx/Gfx.h

@@ -1,6 +1,9 @@
 #pragma once
 #include <cstdint>
 #include <nrf_font.h>
+#include <drivers/BufferProvider.h>
+#include <FreeRTOS.h>
+#include <task.h>
 
 
 namespace Pinetime {
@@ -8,7 +11,7 @@ namespace Pinetime {
     class St7789;
   }
   namespace Components {
-    class Gfx {
+    class Gfx : public Pinetime::Drivers::BufferProvider {
       public:
         explicit Gfx(Drivers::St7789& lcd);
         void Init();
@@ -19,12 +22,34 @@ namespace Pinetime {
 
         void Sleep();
         void Wakeup();
+        bool GetNextBuffer(uint8_t **buffer, size_t &size) override;
 
       private:
+        static constexpr uint8_t width = 240;
+        static constexpr uint8_t height = 240;
+
+        enum class Action { None, FillRectangle, DrawChar};
+        struct State {
+          State() : busy{false}, action{Action::None}, remainingIterations{0}, currentIteration{0} {}
+          volatile bool busy;
+          volatile Action action;
+          volatile uint16_t remainingIterations;
+          volatile uint16_t currentIteration;
+          volatile FONT_INFO *font;
+          volatile uint16_t color;
+          volatile uint8_t character;
+          volatile TaskHandle_t taskToNotify = nullptr;
+        };
+
+        volatile State state;
+
+        uint16_t buffer[width]; // 1 line buffer
         Drivers::St7789& lcd;
-        const uint8_t width = 240;
+
-        const uint8_t height = 240;
         void pixel_draw(uint8_t x, uint8_t y, uint16_t color);
+        void SetBackgroundColor(uint16_t color);
+        void WaitTransfertFinished() const;
+        void NotifyEndOfTransfert(TaskHandle_t task);
     };
   }
 }

src/DisplayApp/DisplayApp.cpp

@@ -14,25 +14,19 @@
 
 using namespace Pinetime::Applications;
 
-DisplayApp::DisplayApp(Controllers::Battery &batteryController,
+DisplayApp::DisplayApp(Pinetime::Drivers::St7789& lcd,
+                       Pinetime::Components::Gfx& gfx,
+                       Pinetime::Drivers::Cst816S& touchPanel,
+                       Controllers::Battery &batteryController,
                        Controllers::Ble &bleController,
                        Controllers::DateTime &dateTimeController) :
-        spi{Drivers::SpiMaster::SpiModule::SPI0,  {
+        lcd{lcd},
-                Drivers::SpiMaster::BitOrder::Msb_Lsb,
+        gfx{gfx},
-                Drivers::SpiMaster::Modes::Mode3,
+        touchPanel{touchPanel},
-                Drivers::SpiMaster::Frequencies::Freq8Mhz,
-                pinSpiSck,
-                pinSpiMosi,
-                pinSpiMiso,
-                pinSpiCsn
-        }},
-        lcd{new Drivers::St7789(spi, pinLcdDataCommand)},
-        gfx{new Components::Gfx(*lcd.get()) },
         batteryController{batteryController},
         bleController{bleController},
         dateTimeController{dateTimeController},
-        clockScreen{*(gfx.get())}/*,
+        clockScreen{gfx} {
-        messageScreen{*(gfx.get())}*/ {
   msgQueue = xQueueCreate(queueSize, itemSize);
   currentScreen = &clockScreen;
 }
@@ -59,12 +53,12 @@ void DisplayApp::InitHw() {
   nrf_gpio_pin_clear(pinLcdBacklight2);
   nrf_gpio_pin_clear(pinLcdBacklight3);
 
-  spi.Init();
-  gfx->Init();
   currentScreen->Refresh(true);
-  touchPanel.Init();
 }
 
+uint32_t acc = 0;
+uint32_t count = 0;
+bool toggle = true;
 void DisplayApp::Refresh() {
   TickType_t queueTimeout;
   switch (state) {
@@ -87,16 +81,16 @@ void DisplayApp::Refresh() {
         nrf_gpio_pin_set(pinLcdBacklight2);
         vTaskDelay(100);
         nrf_gpio_pin_set(pinLcdBacklight1);
-        lcd->DisplayOff();
+        lcd.DisplayOff();
-        lcd->Sleep();
+        lcd.Sleep();
         touchPanel.Sleep();
         state = States::Idle;
         break;
       case Messages::GoToRunning:
-        lcd->Wakeup();
+        lcd.Wakeup();
         touchPanel.Wakeup();
 
-        lcd->DisplayOn();
+        lcd.DisplayOn();
         nrf_gpio_pin_clear(pinLcdBacklight3);
         nrf_gpio_pin_clear(pinLcdBacklight2);
         nrf_gpio_pin_clear(pinLcdBacklight1);
@@ -124,16 +118,8 @@ void DisplayApp::RunningState() {
   if(currentScreen != nullptr) {
     currentScreen->Refresh(false);
   }
-
-//  if(screenState) {
-//    currentScreen = &clockScreen;
-//  } else {
-//    currentScreen = &messageScreen;
-//  }
-//  screenState = !screenState;
 }
 
-
 void DisplayApp::IdleState() {
 
 }
@@ -153,7 +139,7 @@ void DisplayApp::OnTouchEvent() {
   auto info = touchPanel.GetTouchInfo();
 
   if(info.isTouch) {
-    lcd->FillRectangle(info.x-10, info.y-10, 20,20, pointColor);
+    gfx.FillRectangle(info.x-10, info.y-10, 20,20, pointColor);
     pointColor+=10;
   }
 }

src/DisplayApp/DisplayApp.h

@@ -23,7 +23,10 @@ namespace Pinetime {
       public:
         enum class States {Idle, Running};
         enum class Messages : uint8_t {GoToSleep, GoToRunning, UpdateDateTime, UpdateBleConnection, UpdateBatteryLevel, TouchEvent} ;
-        DisplayApp(Controllers::Battery &batteryController,
+        DisplayApp(Pinetime::Drivers::St7789& lcd,
+                   Pinetime::Components::Gfx& gfx,
+                   Pinetime::Drivers::Cst816S&,
+                   Controllers::Battery &batteryController,
                    Controllers::Ble &bleController,
                    Controllers::DateTime& dateTimeController);
         void Start();
@@ -33,9 +36,8 @@ namespace Pinetime {
         TaskHandle_t taskHandle;
         static void Process(void* instance);
         void InitHw();
-        Pinetime::Drivers::SpiMaster spi;
+        Pinetime::Drivers::St7789& lcd;
-        std::unique_ptr<Drivers::St7789> lcd;
+        Pinetime::Components::Gfx& gfx;
-        std::unique_ptr<Components::Gfx> gfx;
         const FONT_INFO largeFont {lCD_70ptFontInfo.height, lCD_70ptFontInfo.startChar, lCD_70ptFontInfo.endChar, lCD_70ptFontInfo.spacePixels, lCD_70ptFontInfo.charInfo, lCD_70ptFontInfo.data};
         const FONT_INFO smallFont {lCD_14ptFontInfo.height, lCD_14ptFontInfo.startChar, lCD_14ptFontInfo.endChar, lCD_14ptFontInfo.spacePixels, lCD_14ptFontInfo.charInfo, lCD_14ptFontInfo.data};
         void Refresh();
@@ -52,18 +54,11 @@ namespace Pinetime {
         Pinetime::Controllers::Ble &bleController;
         Pinetime::Controllers::DateTime& dateTimeController;
 
-        Pinetime::Drivers::Cst816S touchPanel;
+        Pinetime::Drivers::Cst816S& touchPanel;
         void OnTouchEvent();
 
         Screens::Clock clockScreen;
         Screens::Screen* currentScreen = nullptr;
-//        Screens::Message messageScreen;
-//        bool screenState = false;
-        static constexpr uint8_t pinSpiSck = 2;
-        static constexpr uint8_t pinSpiMosi = 3;
-        static constexpr uint8_t pinSpiMiso = 4;
-        static constexpr uint8_t pinSpiCsn = 25;
-        static constexpr uint8_t pinLcdDataCommand = 18;
         static constexpr uint8_t pinLcdBacklight1 = 14;
         static constexpr uint8_t pinLcdBacklight2 = 22;
         static constexpr uint8_t pinLcdBacklight3 = 23;

src/DisplayApp/Screens/Clock.cpp

@@ -9,10 +9,10 @@ using namespace Pinetime::Applications::Screens;
 void Clock::Refresh(bool fullRefresh) {
   if(fullRefresh) {
     gfx.FillRectangle(0,0,240,240,0x0000);
-    currentChar[0] = 0;
+    currentChar[0] = 1;
-    currentChar[1] = 0;
+    currentChar[1] = 2;
-    currentChar[2] = 0;
+    currentChar[2] = 3;
-    currentChar[3] = 0;
+    currentChar[3] = 4;
     auto dummy = currentDateTime.Get();
   }
 

src/DisplayApp/Screens/Message.cpp

@@ -9,6 +9,6 @@ using namespace Pinetime::Applications::Screens;
 void Message::Refresh(bool fullRefresh) {
   if(fullRefresh) {
     gfx.FillRectangle(0,0,240,240,0xffff);
-    gfx.DrawString(120, 10, 0x0000, "COUCOU", &smallFont, false);
+    gfx.DrawString(120, 10, 0x5555, "COUCOU", &smallFont, false);
   }
 }

src/drivers/BufferProvider.h

@@ -0,0 +1,11 @@
+#pragma once
+#include <cstddef>
+
+namespace Pinetime {
+  namespace Drivers {
+    class BufferProvider {
+      public:
+        virtual bool GetNextBuffer(uint8_t** buffer, size_t& size) = 0;
+    };
+  }
+}

src/drivers/SpiMaster.cpp

@@ -1,23 +1,27 @@
 #include <hal/nrf_gpio.h>
+#include <hal/nrf_spim.h>
 #include "SpiMaster.h"
-
+#include <algorithm>
 using namespace Pinetime::Drivers;
 
 SpiMaster::SpiMaster(const SpiMaster::SpiModule spi, const SpiMaster::Parameters &params) :
         spi{spi}, params{params} {
+
 }
 
 bool SpiMaster::Init() {
   /* Configure GPIO pins used for pselsck, pselmosi, pselmiso and pselss for SPI0 */
+  nrf_gpio_pin_set(params.pinSCK);
   nrf_gpio_cfg_output(params.pinSCK);
+  nrf_gpio_pin_clear(params.pinMOSI);
   nrf_gpio_cfg_output(params.pinMOSI);
   nrf_gpio_cfg_input(params.pinMISO, NRF_GPIO_PIN_NOPULL);
   nrf_gpio_cfg_output(params.pinCSN);
   pinCsn = params.pinCSN;
 
   switch(spi) {
-    case SpiModule::SPI0: spiBaseAddress = NRF_SPI0; break;
+    case SpiModule::SPI0: spiBaseAddress = NRF_SPIM0; break;
-    case SpiModule::SPI1: spiBaseAddress = NRF_SPI1; break;
+    case SpiModule::SPI1: spiBaseAddress = NRF_SPIM1; break;
     default: return false;
   }
 
@@ -49,51 +53,130 @@ bool SpiMaster::Init() {
   }
 
   spiBaseAddress->CONFIG = regConfig;
-  spiBaseAddress->EVENTS_READY = 0;
+  spiBaseAddress->EVENTS_ENDRX = 0;
-  spiBaseAddress->ENABLE = (SPI_ENABLE_ENABLE_Enabled << SPI_ENABLE_ENABLE_Pos);
+  spiBaseAddress->EVENTS_ENDTX = 0;
+  spiBaseAddress->EVENTS_END = 0;
 
+  spiBaseAddress->INTENSET = ((unsigned)1 << (unsigned)6);
+  spiBaseAddress->INTENSET = ((unsigned)1 << (unsigned)1);
+  spiBaseAddress->INTENSET = ((unsigned)1 << (unsigned)19);
+
+  spiBaseAddress->ENABLE = (SPIM_ENABLE_ENABLE_Enabled << SPIM_ENABLE_ENABLE_Pos);
+
+  NRFX_IRQ_PRIORITY_SET(SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQn,2);
+  NRFX_IRQ_ENABLE(SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQn);
   return true;
 }
 
-bool SpiMaster::Write(const uint8_t *data, size_t size) {
-  volatile uint32_t dummyread;
 
+void SpiMaster::SetupWorkaroundForFtpan58(NRF_SPIM_Type *spim, uint32_t ppi_channel, uint32_t gpiote_channel) {
+  // Create an event when SCK toggles.
+  NRF_GPIOTE->CONFIG[gpiote_channel] = (GPIOTE_CONFIG_MODE_Event << GPIOTE_CONFIG_MODE_Pos) |
+                                       (spim->PSEL.SCK << GPIOTE_CONFIG_PSEL_Pos) |
+                                       (GPIOTE_CONFIG_POLARITY_Toggle << GPIOTE_CONFIG_POLARITY_Pos);
+
+  // Stop the spim instance when SCK toggles.
+  NRF_PPI->CH[ppi_channel].EEP = (uint32_t) &NRF_GPIOTE->EVENTS_IN[gpiote_channel];
+  NRF_PPI->CH[ppi_channel].TEP = (uint32_t) &spim->TASKS_STOP;
+  NRF_PPI->CHENSET = 1U << ppi_channel;
+
+  // Disable IRQ
+  spim->INTENCLR = (1<<6);
+  spim->INTENCLR = (1<<1);
+  spim->INTENCLR = (1<<19);
+}
+
+void SpiMaster::DisableWorkaroundForFtpan58(NRF_SPIM_Type *spim, uint32_t ppi_channel, uint32_t gpiote_channel) {
+  NRF_GPIOTE->CONFIG[gpiote_channel] = 0;
+  NRF_PPI->CH[ppi_channel].EEP = 0;
+  NRF_PPI->CH[ppi_channel].TEP = 0;
+  NRF_PPI->CHENSET = ppi_channel;
+  spim->INTENSET = (1<<6);
+  spim->INTENSET = (1<<1);
+  spim->INTENSET = (1<<19);
+}
+
+void SpiMaster::OnEndEvent(BufferProvider& provider) {
+  if(!busy) return;
+
+  auto s = currentBufferSize;
+  if(s > 0) {
+    auto currentSize = std::min((size_t) 255, s);
+    PrepareTx(currentBufferAddr, currentSize);
+    currentBufferAddr += currentSize;
+    currentBufferSize -= currentSize;
+
+    spiBaseAddress->TASKS_START = 1;
+  } else {
+    uint8_t* buffer = nullptr;
+    size_t size = 0;
+    if(provider.GetNextBuffer(&buffer, size)) {
+      currentBufferAddr = (uint32_t) buffer;
+      currentBufferSize = size;
+      auto s = currentBufferSize;
+      auto currentSize = std::min((size_t)255, s);
+      PrepareTx(currentBufferAddr, currentSize);
+      currentBufferAddr += currentSize;
+      currentBufferSize -= currentSize;
+
+      spiBaseAddress->TASKS_START = 1;
+    } else {
+      busy = false;
+      nrf_gpio_pin_set(pinCsn);
+    }
+  }
+}
+
+void SpiMaster::OnStartedEvent(BufferProvider& provider) {
+  if(!busy) return;
+}
+
+void SpiMaster::PrepareTx(const volatile uint32_t bufferAddress, const volatile size_t size) {
+  spiBaseAddress->TXD.PTR = bufferAddress;
+  spiBaseAddress->TXD.MAXCNT = size;
+  spiBaseAddress->TXD.LIST = 0;
+  spiBaseAddress->RXD.PTR = 0;
+  spiBaseAddress->RXD.MAXCNT = 0;
+  spiBaseAddress->RXD.LIST = 0;
+  spiBaseAddress->EVENTS_END = 0;
+}
+
+bool SpiMaster::Write(const uint8_t *data, size_t size) {
   if(data == nullptr) return false;
 
-  /* enable slave (slave select active low) */
+  while(busy) {
-  nrf_gpio_pin_clear(pinCsn);
+    asm("nop");
-
-  spiBaseAddress->EVENTS_READY = 0;
-
-  spiBaseAddress->TXD = (uint32_t)*data++;
-
-  while(--size)
-  {
-    spiBaseAddress->TXD =  (uint32_t)*data++;
-
-    /* Wait for the transaction complete or timeout (about 10ms - 20 ms) */
-    while (spiBaseAddress->EVENTS_READY == 0);
-
-    /* clear the event to be ready to receive next messages */
-    spiBaseAddress->EVENTS_READY = 0;
-
-    dummyread = spiBaseAddress->RXD;
   }
 
-  /* Wait for the transaction complete or timeout (about 10ms - 20 ms) */
+  if(size == 1) {
-  while (spiBaseAddress->EVENTS_READY == 0);
+    SetupWorkaroundForFtpan58(spiBaseAddress, 0,0);
+  } else {
+    DisableWorkaroundForFtpan58(spiBaseAddress, 0, 0);
+  }
 
-  dummyread = spiBaseAddress->RXD;
+  nrf_gpio_pin_clear(pinCsn);
 
-  /* disable slave (slave select active low) */
+  currentBufferAddr = (uint32_t)data;
-  nrf_gpio_pin_set(pinCsn);
+  currentBufferSize = size;
+  busy = true;
+
+  auto currentSize = std::min((size_t)255, (size_t)currentBufferSize);
+  PrepareTx(currentBufferAddr, currentSize);
+  currentBufferSize -= currentSize;
+  currentBufferAddr += currentSize;
+  spiBaseAddress->TASKS_START = 1;
+
+  if(size == 1) {
+    while (spiBaseAddress->EVENTS_END == 0);
+    busy = false;
+  }
 
   return true;
 }
 
 void SpiMaster::Sleep() {
-  while(NRF_SPI0->ENABLE != 0) {
+  while(spiBaseAddress->ENABLE != 0) {
-    NRF_SPI0->ENABLE = (SPIM_ENABLE_ENABLE_Disabled << SPIM_ENABLE_ENABLE_Pos);
+    spiBaseAddress->ENABLE = (SPIM_ENABLE_ENABLE_Disabled << SPIM_ENABLE_ENABLE_Pos);
   }
   nrf_gpio_cfg_default(params.pinSCK);
   nrf_gpio_cfg_default(params.pinMOSI);
@@ -104,3 +187,5 @@ void SpiMaster::Sleep() {
 void SpiMaster::Wakeup() {
   Init();
 }
+
+

src/drivers/SpiMaster.h

@@ -2,7 +2,9 @@
 #include <cstdint>
 #include <cstddef>
 #include <array>
+#include <atomic>
 
+#include "BufferProvider.h"
 namespace Pinetime {
   namespace Drivers {
     class SpiMaster {
@@ -25,15 +27,26 @@ namespace Pinetime {
         bool Init();
         bool Write(const uint8_t* data, size_t size);
 
+        void OnStartedEvent(BufferProvider& provider);
+        void OnEndEvent(BufferProvider& provider);
+
         void Sleep();
         void Wakeup();
 
       private:
-        NRF_SPI_Type *  spiBaseAddress;
+        void SetupWorkaroundForFtpan58(NRF_SPIM_Type *spim, uint32_t ppi_channel, uint32_t gpiote_channel);
+        void DisableWorkaroundForFtpan58(NRF_SPIM_Type *spim, uint32_t ppi_channel, uint32_t gpiote_channel);
+        void PrepareTx(const volatile uint32_t bufferAddress, const volatile size_t size);
+
+        NRF_SPIM_Type *  spiBaseAddress;
         uint8_t pinCsn;
 
         SpiMaster::SpiModule spi;
         SpiMaster::Parameters params;
+
+        volatile bool busy = false;
+        volatile uint32_t currentBufferAddr = 0;
+        volatile size_t currentBufferSize = 0;
     };
   }
 }

src/drivers/St7789.cpp

@@ -38,7 +38,7 @@ void St7789::WriteData(uint8_t data) {
 
 
 void St7789::WriteSpi(const uint8_t* data, size_t size) {
-  spi.Write(data, size);
+    spi.Write(data, size);
 }
 
 void St7789::SoftwareReset() {
@@ -95,20 +95,6 @@ void St7789::DisplayOn() {
   WriteCommand(static_cast<uint8_t>(Commands::DisplayOn));
 }
 
-void St7789::FillRectangle(uint16_t x, uint16_t y, uint16_t width, uint16_t height, uint16_t color) {
-  BeginDrawBuffer(x, y, width, height);
-
-  uint32_t c = color + (color << 16);
-  uint8_t w = width/2;
-
-  for(y=height+ST7789_ROW_OFFSET; y>ST7789_ROW_OFFSET; y--) {
-    for(x=w; x>0; x--) {
-      NextDrawBuffer(reinterpret_cast<const uint8_t *>(&c), 4);
-    }
-  }
-  EndDrawBuffer();
-}
-
 void St7789::SetAddrWindow(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1) {
   WriteCommand(static_cast<uint8_t>(Commands::ColumnAddressSet));
   WriteData(x0 >> 8);
@@ -156,11 +142,8 @@ void St7789::BeginDrawBuffer(uint16_t x, uint16_t y, uint16_t width, uint16_t he
   nrf_gpio_pin_set(pinDataCommand);
 }
 
-void St7789::EndDrawBuffer() {
-}
-
 void St7789::NextDrawBuffer(const uint8_t *data, size_t size) {
-  spi.Write(data, size);
+  WriteSpi(data, size);
 }
 
 void St7789::HardwareReset() {
@@ -191,5 +174,3 @@ void St7789::Wakeup() {
   NormalModeOn();
   DisplayOn();
 }
-
-

src/drivers/St7789.h

@@ -10,19 +10,15 @@ namespace Pinetime {
         void Init();
         void Uninit();
         void DrawPixel(uint16_t x, uint16_t y, uint32_t color);
-        void FillRectangle(uint16_t x, uint16_t y, uint16_t width, uint16_t height, uint16_t color);
 
         void BeginDrawBuffer(uint16_t x, uint16_t y, uint16_t width, uint16_t height);
         void NextDrawBuffer(const uint8_t* data, size_t size);
-        void EndDrawBuffer();
 
         void DisplayOn();
         void DisplayOff();
 
         void Sleep();
         void Wakeup();
-
-
       private:
         SpiMaster& spi;
         uint8_t pinDataCommand;
@@ -36,10 +32,7 @@ namespace Pinetime {
         void DisplayInversionOn();
         void NormalModeOn();
         void WriteToRam();
-
-
         void SetAddrWindow(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1);
-
         void WriteCommand(uint8_t cmd);
         void WriteSpi(const uint8_t* data, size_t size);
 
@@ -63,7 +56,6 @@ namespace Pinetime {
         static constexpr uint16_t Width = 240;
         static constexpr uint16_t Height = 240;
         void RowAddressSet();
-
     };
   }
 }

src/main.cpp

@@ -15,6 +15,10 @@
 #include "BLE/BleManager.h"
 #include "Components/Battery/BatteryController.h"
 #include "Components/Ble/BleController.h"
+#include "../drivers/Cst816s.h"
+#include <drivers/St7789.h>
+#include <drivers/SpiMaster.h>
+#include <Components/Gfx/Gfx.h>
 
 #if NRF_LOG_ENABLED
 #include "Logging/NrfLogger.h"
@@ -24,6 +28,18 @@ Pinetime::Logging::NrfLogger logger;
 Pinetime::Logging::DummyLogger logger;
 #endif
 
+std::unique_ptr<Pinetime::Drivers::SpiMaster> spi;
+std::unique_ptr<Pinetime::Drivers::St7789> lcd;
+std::unique_ptr<Pinetime::Components::Gfx> gfx;
+std::unique_ptr<Pinetime::Drivers::Cst816S> touchPanel;
+
+static constexpr uint8_t pinSpiSck = 2;
+static constexpr uint8_t pinSpiMosi = 3;
+static constexpr uint8_t pinSpiMiso = 4;
+static constexpr uint8_t pinSpiCsn = 25;
+static constexpr uint8_t pinLcdDataCommand = 18;
+
+
 std::unique_ptr<Pinetime::Applications::DisplayApp> displayApp;
 TaskHandle_t systemThread;
 bool isSleeping = false;
@@ -85,9 +101,29 @@ void SystemTask(void *) {
   APP_GPIOTE_INIT(2);
   bool erase_bonds=false;
   nrf_sdh_freertos_init(ble_manager_start_advertising, &erase_bonds);
+
+  spi.reset(new Pinetime::Drivers::SpiMaster {Pinetime::Drivers::SpiMaster::SpiModule::SPI0,  {
+          Pinetime::Drivers::SpiMaster::BitOrder::Msb_Lsb,
+          Pinetime::Drivers::SpiMaster::Modes::Mode3,
+          Pinetime::Drivers::SpiMaster::Frequencies::Freq8Mhz,
+          pinSpiSck,
+          pinSpiMosi,
+          pinSpiMiso,
+          pinSpiCsn
+  }});
+
+  lcd.reset(new Pinetime::Drivers::St7789(*spi, pinLcdDataCommand));
+  gfx.reset(new Pinetime::Components::Gfx(*lcd));
+  touchPanel.reset(new Pinetime::Drivers::Cst816S());
+
+  spi->Init();
+  lcd->Init();
+  touchPanel->Init();
+  batteryController.Init();
+
+  displayApp.reset(new Pinetime::Applications::DisplayApp(*lcd, *gfx, *touchPanel, batteryController, bleController, dateTimeController));
   displayApp->Start();
 
-  batteryController.Init();
   batteryController.Update();
   displayApp->PushMessage(Pinetime::Applications::DisplayApp::Messages::UpdateBatteryLevel);
 
@@ -158,8 +194,22 @@ void OnNewTime(current_time_char_t* currentTime) {
                              dayOfWeek, hour, minute, second, nrf_rtc_counter_get(portNRF_RTC_REG));
 }
 
+void SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQHandler(void) {
+  if(((NRF_SPIM0->INTENSET & (1<<6)) != 0) && NRF_SPIM0->EVENTS_END == 1) {
+    NRF_SPIM0->EVENTS_END = 0;
+    spi->OnEndEvent(*gfx);
+  }
+
+  if(((NRF_SPIM0->INTENSET & (1<<19)) != 0) && NRF_SPIM0->EVENTS_STARTED == 1) {
+    NRF_SPIM0->EVENTS_STARTED = 0;
+    spi->OnStartedEvent(*gfx);
+  }
+
+  if(((NRF_SPIM0->INTENSET & (1<<1)) != 0) && NRF_SPIM0->EVENTS_STOPPED == 1) {
+    NRF_SPIM0->EVENTS_STOPPED = 0;
+  }
+}
 int main(void) {
-  displayApp.reset(new Pinetime::Applications::DisplayApp(batteryController, bleController, dateTimeController));
   logger.Init();
   nrf_drv_clock_init();