dev0.2_halRevision (#1)

- Реализация части функций в библиотеках hal перенесена в заголовочный файл, функции определены как inline.
- В модулях Tone, SPI, Wire работа с регистрами вынесена в библиотеку hal или в платозависимые файлы pins_arduino.h, variants.c
- В модуле wiring_analog при отключении работы ШИМ сначала проверяется, включен ли ШИМ на указанной ноге. Если включен, вывод после отключения таймера конфигурируется на вход.

Reviewed-on: #1

libraries/Wire/src/utility/twi.c

@@ -88,36 +88,22 @@ void twi_deinit(void)
 {
   uint32_t EPICmask;
   
-  HAL_I2C_Disable(&hi2c);
-  // disable clock
 #if I2C_NUM == 0
   hi2c.Instance = I2C_0;
   EPICmask = HAL_EPIC_I2C_0_MASK;
-  __HAL_PCC_I2C_0_CLK_DISABLE();
 #elif I2C_NUM == 1
   hi2c.Instance = I2C_1;
   EPICmask = HAL_EPIC_I2C_1_MASK;
-  __HAL_PCC_I2C_1_CLK_DISABLE();
 #else
   #error "Unsupported I2C_NUM value in pins_arduino.h"
 #endif
 
+  HAL_I2C_Deinit(&hi2c);
+
   // for slave mode disable interrupts from i2c
   if (hi2c.Init.Mode == HAL_I2C_MODE_SLAVE) 
     HAL_EPIC_MaskLevelClear(EPICmask);
 
-  // reconfigure pins to z state
-  GPIO_InitTypeDef GPIO_InitStruct;
-  memset(&GPIO_InitStruct, 0, sizeof(GPIO_InitStruct)); 
-  // SDA
-  GPIO_InitStruct.Pin = (HAL_PinsTypeDef)digitalPinToBitMask(PIN_WIRE_SDA);
-  GPIO_InitStruct.Mode = HAL_GPIO_MODE_GPIO_INPUT;
-  GPIO_InitStruct.Pull = HAL_GPIO_PULL_NONE;
-  HAL_GPIO_Init(digitalPinToPort(PIN_WIRE_SDA), &GPIO_InitStruct);
-  // SCL
-  GPIO_InitStruct.Pin = (HAL_PinsTypeDef)digitalPinToBitMask(PIN_WIRE_SCL);
-  HAL_GPIO_Init(digitalPinToPort(PIN_WIRE_SCL), &GPIO_InitStruct);
-
   twiIsOn = false;
 }
 
@@ -252,7 +238,7 @@ uint8_t twi_masterWriteTo(uint8_t address, uint8_t* data, uint8_t length, uint8_
 
   // parse errors
   // check separately, because in hal libraries not all functions look at this
-  if (hi2c.Instance->ISR & I2C_ISR_NACKF_M) 
+  if (HAL_I2C_Get_Interrupts_Status(&hi2c) & I2C_ISR_NACKF_M) 
     hi2c.ErrorCode = I2C_ERROR_NACK;
   if      (hi2c.ErrorCode == (HAL_I2C_ErrorTypeDef)I2C_ERROR_TIMEOUT) ret = I2C_TIMEOUT;    // timeout
   else if (hi2c.ErrorCode == (HAL_I2C_ErrorTypeDef)I2C_ERROR_NACK)    ret = I2C_NACK_DATA;  // didn't receive ACK
@@ -275,39 +261,35 @@ i2c_status_e twi_slaveWrite(uint8_t *txData, uint8_t bytesNum)
   if ((hi2c.ErrorCode != I2C_ERROR_NONE))
     HAL_I2C_Reset(&hi2c);
 
-  // отправка данных
+  // send data
   HAL_StatusTypeDef error_code = HAL_OK;
-
-  hi2c.Instance->CR2 &= ~I2C_CR2_RELOAD_M;
+  HAL_I2C_Clear_Reload(&hi2c);
+  if (!(HAL_I2C_Get_CR1_Content(&hi2c) & I2C_CR1_NOSTRETCH_M))  // NOSTRETCH = 0 
+    HAL_I2C_Reset_TXDR_Content(&hi2c);
+  HAL_I2C_Write_TXDR(&hi2c, txData[0]); // first recording is made in advance
   
-  if (!(hi2c.Instance->CR1 & I2C_CR1_NOSTRETCH_M))  // NOSTRETCH = 0 
-      hi2c.Instance->ISR |= I2C_ISR_TXE_M;          // Reset TXDR contents
-
-  hi2c.Instance->TXDR = txData[0]; // The first recording is made in advance
-  
-  // Запись байта 
+  // write byte 
   for (uint32_t tx_count = 1; tx_count < bytesNum; tx_count++)
   {
       if ((error_code = HAL_I2C_Slave_WaitTXIS(&hi2c, TIMEOUT_TICKS)) != HAL_OK)
       {
-          // неудачная запись
-          hi2c.Instance->ISR |= I2C_ISR_TXE_M;       // Reset TXDR contents
-          hi2c.Instance->ICR |= I2C_ICR_STOPCF_M;    // Clear the STOP detection flag on the bus 
+          // failed to write
+          HAL_I2C_Reset_TXDR_Content(&hi2c);
+          HAL_I2C_Reset_Interrupt_Flag(&hi2c, I2C_ICR_STOPCF_M); // Clear the STOP detection flag on the bus 
           HAL_I2C_Reset(&hi2c);
           return I2C_TIMEOUT;
       }
-      hi2c.Instance->TXDR = txData[tx_count];
+      HAL_I2C_Write_TXDR(&hi2c, txData[tx_count]);
   }
 
   if ((error_code = HAL_I2C_WaitBusy(&hi2c, TIMEOUT_TICKS)) != HAL_OK)
   {
-      // неудачное завершение транзакции
+      // failed to complete transaction
       HAL_I2C_Reset(&hi2c);
       return I2C_TIMEOUT;
   }
-      
-  hi2c.Instance->ISR |= I2C_ISR_TXE_M;       // Reset TXDR contents
-  hi2c.Instance->ICR |= I2C_ICR_STOPCF_M;    // Clear the STOP detection flag on the bus 
+  HAL_I2C_Reset_TXDR_Content(&hi2c);    
+  HAL_I2C_Reset_Interrupt_Flag(&hi2c, I2C_ICR_STOPCF_M); // Clear the STOP detection flag on the bus 
   
   return I2C_OK;
 }
@@ -343,25 +325,24 @@ void twi_attachSlaveTxEvent( void (*function)(void) )
  */
 void twi_interruptHandler(void)
 {
-  uint32_t int_mask = hi2c.Instance->CR1 & I2C_INTMASK; // interrupts allowed
-  uint32_t interrupt_status = hi2c.Instance->ISR;       // current flags
+  uint32_t int_mask = HAL_I2C_Get_CR1_Content(&hi2c) & I2C_INTMASK; // interrupts allowed
+  uint32_t interrupt_status = HAL_I2C_Get_Interrupts_Status(&hi2c); // current flags
 
   // master calls by address, device in slave mode
   if ((interrupt_status & I2C_ISR_ADDR_M) && (int_mask & I2C_CR1_ADDRIE_M))
   {
       // reset ADDR flag
-      hi2c.Instance->ICR |= I2C_ICR_ADDRCF_M;
+      HAL_I2C_Reset_Interrupt_Flag(&hi2c, I2C_ICR_ADDRCF_M);
 
       // look at the transmission direction and respond to the request
       if (interrupt_status & I2C_ISR_DIR_M) // master reads, slave sends
-        // отправляем данные
-        twi_onSlaveTransmit();
+        twi_onSlaveTransmit(); // slave send data
       else                                  // master writes, slave reads
       {
         twi_rxBufferIndex = 0; // write from the beginning of the buffer
         hi2c.State = HAL_I2C_STATE_BUSY;
-        hi2c.Instance->CR2 &= ~I2C_CR2_RELOAD_M;
-        // wait for interrupts because of receiving a byte or a stop condition
+        HAL_I2C_Clear_Reload(&hi2c);
+        // wait for interrupts by receiving a byte or a stop condition
       }
   }
 
@@ -369,15 +350,15 @@ void twi_interruptHandler(void)
   if ((interrupt_status & I2C_ISR_RXNE_M) && (int_mask & I2C_CR1_RXIE_M))
   {
     // put new byte into buffer
-    twi_rxBuffer[twi_rxBufferIndex++] = (uint8_t)hi2c.Instance->RXDR;
+    twi_rxBuffer[twi_rxBufferIndex++] = HAL_I2C_Get_RXDR(&hi2c);
   }
   
   // master sent a STOP to the bus
   if ((interrupt_status & I2C_ISR_STOPF_M) && (int_mask & I2C_CR1_STOPIE_M))
   {
     hi2c.State = HAL_I2C_STATE_END;
-    hi2c.Instance->ISR |= I2C_ISR_TXE_M;    // Reset TXDR contents
-    hi2c.Instance->ICR |= I2C_ICR_STOPCF_M; // Clear the STOP detection flag on the bus 
+    HAL_I2C_Reset_TXDR_Content(&hi2c);
+    HAL_I2C_Reset_Interrupt_Flag(&hi2c, I2C_ICR_STOPCF_M); // Clear the STOP detection flag on the bus 
     // pass the received data to callback function
     twi_onSlaveReceive(twi_rxBuffer, twi_rxBufferIndex);
   }