Simplify parameters and cleanup

Author: Riksu9000

src/drivers/TwiMaster.cpp

@@ -8,19 +8,20 @@ using namespace Pinetime::Drivers;
 // TODO use shortcut to automatically send STOP when receive LastTX, for example
 // TODO use DMA/IRQ
 
-TwiMaster::TwiMaster(const Modules module, const Parameters& params) : module {module}, params {params} {
+TwiMaster::TwiMaster(NRF_TWIM_Type* module, uint32_t frequency, uint8_t pinSda, uint8_t pinScl)
+  : module {module}, frequency {frequency}, pinSda {pinSda}, pinScl {pinScl} {
   mutex = xSemaphoreCreateBinary();
 }
 
 void TwiMaster::ConfigurePins() const {
-  NRF_GPIO->PIN_CNF[params.pinScl] =
+  NRF_GPIO->PIN_CNF[pinScl] =
     (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos) |
     (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) |
     (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos) |
     (GPIO_PIN_CNF_DRIVE_S0D1 << GPIO_PIN_CNF_DRIVE_Pos) |
     (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos);
 
-  NRF_GPIO->PIN_CNF[params.pinSda] =
+  NRF_GPIO->PIN_CNF[pinSda] =
     (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos) |
     (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) |
     (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos) |
@@ -31,28 +32,12 @@ void TwiMaster::ConfigurePins() const {
 void TwiMaster::Init() {
   ConfigurePins();
 
-  switch (module) {
-    case Modules::TWIM1:
-      twiBaseAddress = NRF_TWIM1;
-      break;
-    default:
-      return;
-  }
+  twiBaseAddress = module;
 
-  switch (static_cast<Frequencies>(params.frequency)) {
-    case Frequencies::Khz100:
-      twiBaseAddress->FREQUENCY = TWIM_FREQUENCY_FREQUENCY_K100;
-      break;
-    case Frequencies::Khz250:
-      twiBaseAddress->FREQUENCY = TWIM_FREQUENCY_FREQUENCY_K250;
-      break;
-    case Frequencies::Khz400:
-      twiBaseAddress->FREQUENCY = TWIM_FREQUENCY_FREQUENCY_K400;
-      break;
-  }
+  twiBaseAddress->FREQUENCY = frequency;
 
-  twiBaseAddress->PSEL.SCL = params.pinScl;
-  twiBaseAddress->PSEL.SDA = params.pinSda;
+  twiBaseAddress->PSEL.SCL = pinScl;
+  twiBaseAddress->PSEL.SDA = pinSda;
   twiBaseAddress->EVENTS_LASTRX = 0;
   twiBaseAddress->EVENTS_STOPPED = 0;
   twiBaseAddress->EVENTS_LASTTX = 0;
@@ -63,12 +48,6 @@ void TwiMaster::Init() {
 
   twiBaseAddress->ENABLE = (TWIM_ENABLE_ENABLE_Enabled << TWIM_ENABLE_ENABLE_Pos);
 
-  /* // IRQ
-     NVIC_ClearPendingIRQ(_IRQn);
-     NVIC_SetPriority(_IRQn, 2);
-     NVIC_EnableIRQ(_IRQn);
-   */
-
   xSemaphoreGive(mutex);
 }
 
@@ -194,12 +173,10 @@ void TwiMaster::Wakeup() {
  * */
 void TwiMaster::FixHwFreezed() {
   NRF_LOG_INFO("I2C device frozen, reinitializing it!");
-  // Disable I²C
+
   uint32_t twi_state = NRF_TWI1->ENABLE;
-  twiBaseAddress->ENABLE = TWIM_ENABLE_ENABLE_Disabled << TWI_ENABLE_ENABLE_Pos;
 
-  ConfigurePins();
+  Sleep();
 
-  // Re-enable I²C
   twiBaseAddress->ENABLE = twi_state;
 }

src/drivers/TwiMaster.h

@@ -8,16 +8,9 @@ namespace Pinetime {
   namespace Drivers {
     class TwiMaster {
     public:
-      enum class Modules { TWIM1 };
-      enum class Frequencies { Khz100, Khz250, Khz400 };
       enum class ErrorCodes { NoError, TransactionFailed };
-      struct Parameters {
-        uint32_t frequency;
-        uint8_t pinSda;
-        uint8_t pinScl;
-      };
 
-      TwiMaster(const Modules module, const Parameters& params);
+      TwiMaster(NRF_TWIM_Type* module, uint32_t frequency, uint8_t pinSda, uint8_t pinScl);
 
       void Init();
       ErrorCodes Read(uint8_t deviceAddress, uint8_t registerAddress, uint8_t* buffer, size_t size);
@@ -26,16 +19,18 @@ namespace Pinetime {
       void Sleep();
       void Wakeup();
 
-      void ConfigurePins() const;
-
     private:
       ErrorCodes Read(uint8_t deviceAddress, uint8_t* buffer, size_t size, bool stop);
       ErrorCodes Write(uint8_t deviceAddress, const uint8_t* data, size_t size, bool stop);
       void FixHwFreezed();
+      void ConfigurePins() const;
+
       NRF_TWIM_Type* twiBaseAddress;
       SemaphoreHandle_t mutex = nullptr;
-      const Modules module;
-      const Parameters params;
+      NRF_TWIM_Type* module;
+      uint32_t frequency;
+      uint8_t pinSda;
+      uint8_t pinScl;
       static constexpr uint8_t maxDataSize {16};
       static constexpr uint8_t registerSize {1};
       uint8_t internalBuffer[maxDataSize + registerSize];

src/main.cpp

@@ -81,9 +81,8 @@ Pinetime::Drivers::SpiNorFlash spiNorFlash {flashSpi};
 // The TWI device should work @ up to 400Khz but there is a HW bug which prevent it from
 // respecting correct timings. According to erratas heet, this magic value makes it run
 // at ~390Khz with correct timings.
-static constexpr uint32_t MaxTwiFrequencyWithoutHardwareBug {0x06200000};
-Pinetime::Drivers::TwiMaster twiMaster {Pinetime::Drivers::TwiMaster::Modules::TWIM1,
-                                        Pinetime::Drivers::TwiMaster::Parameters {MaxTwiFrequencyWithoutHardwareBug, pinTwiSda, pinTwiScl}};
+//static constexpr uint32_t MaxTwiFrequencyWithoutHardwareBug {0x06200000};
+Pinetime::Drivers::TwiMaster twiMaster {NRF_TWIM1, TWI_FREQUENCY_FREQUENCY_K250, pinTwiSda, pinTwiScl};
 Pinetime::Drivers::Cst816S touchPanel {twiMaster, touchPanelTwiAddress};
 #ifdef PINETIME_IS_RECOVERY
 static constexpr bool isFactory = true;