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/**

 ******************************************************************************

 * File Name          : main.c

 * Description        : Main program body

 ******************************************************************************

 *

 * COPYRIGHT(c) 2016 STMicroelectronics

 *

 * Redistribution and use in source and binary forms, with or without modification,

 * are permitted provided that the following conditions are met:

 *   1. Redistributions of source code must retain the above copyright notice,

 *      this list of conditions and the following disclaimer.

 *   2. Redistributions in binary form must reproduce the above copyright notice,

 *      this list of conditions and the following disclaimer in the documentation

 *      and/or other materials provided with the distribution.

 *   3. Neither the name of STMicroelectronics nor the names of its contributors

 *      may be used to endorse or promote products derived from this software

 *      without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER

 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,

 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 *

 ******************************************************************************

 */

/* Includes ------------------------------------------------------------------*/

#include "stm32f1xx_hal.h"

/* USER CODE BEGIN Includes */

#include "ap_math.h"

#include "serial.h"

#include "SSD1306.h"

#include "dials.h"

#include "switches.h"

#include <math.h>

#include "plx.h"

/* USER CODE END Includes */

/* Private variables ---------------------------------------------------------*/

ADC_HandleTypeDef hadc1;

SPI_HandleTypeDef hspi1;

UART_HandleTypeDef huart1;

UART_HandleTypeDef huart2;

/* USER CODE BEGIN PV */

/* Private variables ---------------------------------------------------------*/

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/

void

SystemClock_Config (void);

void

Error_Handler (void);

static void

MX_GPIO_Init (void);

static void

MX_ADC1_Init (void);

static void

MX_SPI1_Init (void);

static void

MX_USART2_UART_Init (void);

static void

MX_USART1_UART_Init (void);

/* USER CODE BEGIN PFP */

/* Private function prototypes -----------------------------------------------*/

/* USER CODE END PFP */

/* USER CODE BEGIN 0 */

/* dummy function */

void

_init (void)

{

}

/* USER CODE END 0 */

int

main (void)

{

  /* USER CODE BEGIN 1 */

  GPIO_InitTypeDef GPIO_InitStruct;

  __HAL_RCC_SPI1_CLK_ENABLE()

  ;

  __HAL_RCC_USART1_CLK_ENABLE()

  ; // PLX main port

  __HAL_RCC_USART2_CLK_ENABLE()

  ; // debug port

  /* USER CODE END 1 */

  /* MCU Configuration----------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */

  HAL_Init ();

  /* Configure the system clock */

  SystemClock_Config ();

  /* Initialize all configured peripherals */

  MX_GPIO_Init ();

  // MX_ADC1_Init();

  MX_SPI1_Init ();

  MX_USART2_UART_Init ();

  MX_USART1_UART_Init ();

  /* USER CODE BEGIN 2 */

  /* Need to set AF mode for output pins DURR. */

  /* SPI bus AF pin selects */

  GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;

  GPIO_InitStruct.Pin = GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_7;

  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;

  HAL_GPIO_Init (GPIOA, &GPIO_InitStruct);

  /* USART2 AF pin selects */

  GPIO_InitStruct.Pin = GPIO_PIN_2;

  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;

  HAL_GPIO_Init (GPIOA, &GPIO_InitStruct);

  /* USART1 AF pin selects */

  GPIO_InitStruct.Pin = GPIO_PIN_9;

  HAL_GPIO_Init (GPIOA, &GPIO_InitStruct);

  /* Turn on USART2 IRQ  */

  HAL_NVIC_SetPriority (USART2_IRQn, 4, 0);

  HAL_NVIC_EnableIRQ (USART2_IRQn);

  /* Turn on USART1 IRQ */

  HAL_NVIC_SetPriority (USART1_IRQn, 2, 0);

  HAL_NVIC_EnableIRQ (USART1_IRQn);

  /* setup the USART control blocks */

  init_usart_ctl (&uc1, huart1.Instance);

  init_usart_ctl (&uc2, huart2.Instance);

  EnableSerialRxInterrupt (&uc1);

  EnableSerialRxInterrupt (&uc2);

  ap_init (); // set up the approximate math library

  int disp;

  ssd1306_begin (1, 0);

// static const int xp = 128 - 42;

  for (disp = 0; disp < 2; disp++)

    {

      select_display (disp);

      clearDisplay ();

      dim (0);

      //font_puts(

      //                "Hello world !!\rThis text is a test of the text rendering library in a 5*7 font");

      dial_origin (64, 60);

      dial_size (60);

      dial_draw_scale (10, 16, 16, 2);

      display ();

    }

  InitSwitches ();

  select_display (0);

  /* USER CODE END 2 */

  /* Infinite loop */

  /* USER CODE BEGIN WHILE */

  uint32_t Ticks = HAL_GetTick () + 100;

  int16_t dial0 = 0;

  int16_t dial1 = -1;

  int c = 0;

  int i;

  char buff[10];

  // PLX decoder protocol

#define MAXRDG 10

  char PLXPacket = 0;

  union

  {

    PLX_SensorInfo Sensor[MAXRDG];

    char Bytes[MAXRDG * sizeof(PLX_SensorInfo)];

  } Data;

  int Max[MAXRDG];

  int Min[MAXRDG];

  for (i = 0; i < MAXRDG; i++)

    {

      Max[i] = 0;

      Min[i] = 0xFFF; // 12 bit max value

    }

  int PLXPtr;

  int PLXItems;

  int OldObservation = -1; // illegal initial value

  int OldObservationIndex = -1; // if more than one sensor this will be printed

  while (1)

    {

// poll switches

      HandleSwitches ();

      int ItemIndex = dial_pos[0];

      uint16_t cc = SerialCharsReceived (&uc1);

      for (i = 0; i < cc; i++)

        {

          char c = GetCharSerial (&uc1);

          if (c == PLX_Start) // at any time if the start byte appears, reset the pointers

            {

              PLXPtr = 0;    // reset the pointer

              PLXPacket = 1;

              continue;

            }

          if (c == PLX_Stop)

            {

              // we can now decode the selected parameter

              PLXPacket = 0;

              PLXItems = PLXPtr / sizeof(PLX_SensorInfo); // total

              // saturate the rotary switch position

              if (ItemIndex > PLXItems)

                {

                  dial_pos[0] = PLXItems;

                  ItemIndex = PLXItems;

                }

              int DataVal;

              // process min/max

              for (i = 0; i < PLXItems; i++)

                {

                  DataVal = ConvPLX (Data.Sensor[i].ObsH, Data.Sensor[i].ObsL);

                  if (DataVal > Max[i])

                    {

                      Max[i] = DataVal;

                    }

                  if (DataVal < Min[i])

                    {

                      Min[i] = DataVal;

                    }

                }

              DataVal = ConvPLX (Data.Sensor[ItemIndex].ObsH,

                                 Data.Sensor[ItemIndex].ObsL);   // data reading

              int Observation = ConvPLX (Data.Sensor[ItemIndex].ObsH,

                                         Data.Sensor[ItemIndex].ObsL);

              int ObservationIndex = ConvPLX (0,

                                              Data.Sensor[ItemIndex].ObsIndex);

              // now to convert the readings and format strings

              // find out limits

              char * msg;

              int len;

              if (Observation < PLX_MAX_OBS)

                {

                  if (Observation != OldObservation

                      || ObservationIndex != OldObservationIndex)

                    {

                      dial1 = -1;

                      clearDisplay();

                      dial_draw_scale (

                          DisplayInfo[Observation].Low

                              / DisplayInfo[Observation].TickScale,

                          DisplayInfo[Observation].High

                              / DisplayInfo[Observation].TickScale,

                          16, 1);

                      if (ObservationIndex > 0)

                        {

                          len = 5;

                          buff[6] = ObservationIndex + '1';

                        }

                      else

                        {

                          len = 6;

                        }

                        {

                          msg = DisplayInfo[Observation].name;

                        }

                      for (i = 0; i < len; i++)

                        {

                          buff[i] = msg[i];

                        }

                      print_large_string (buff, 32, 48, 6); // this prints spaces for \0 at end of string

                      OldObservation = Observation;

                      OldObservationIndex = ObservationIndex;

                      //

                    }

                  double max_rdg;

                  double min_rdg;

                  double cur_rdg;

                  max_rdg = ConveriMFDRaw2Data (Observation,

                                                DisplayInfo[Observation].Units,

                                                Max[ItemIndex]);

                  min_rdg = ConveriMFDRaw2Data (Observation,

                                                DisplayInfo[Observation].Units,

                                                Min[ItemIndex]);

                  cur_rdg = ConveriMFDRaw2Data (Observation,

                                                DisplayInfo[Observation].Units,

                                                DataVal);

                }

            }

          if (c > PLX_Stop) // illegal char, restart reading

            {

              PLXPacket = 0;

            }

          if (PLXPtr < sizeof(Data.Bytes))

            {

              Data.Bytes[PLXPtr++] = c;

            }

        }

      HAL_Delay (1);

      /* now scale and decode the dial position etc .

       *

       */

      uint32_t CurrTicks = HAL_GetTick ();

      if (CurrTicks > Ticks)

        {

          /* Lookup the dial etc . */

          Ticks = CurrTicks + 100;

          /* old needle un-draw */

          if (dial1 >= 0)

            {

              dial_draw_needle (dial1);

            }

          dial0 = c % 100;

          dial_draw_needle (dial0);

          // print value overlaid by needle

          // this is actual reading

          print_digits (64 - 16, 30, 4, 3, c);

          dial1 = dial0;

          c++;

          //font_gotoxy(0, 2);

          //font_puts("baud\r\n");

          //char buff[10];

          //itoa(hirda3.Init.BaudRate, buff, 10);

          //char l = 6 - strlen(buff);

          /* pad with leading spaces */

          //while (l > 0) {

          //    font_putchar(' ');

          //    l--;

          //}

          //font_puts(itoa(hirda3.Init.BaudRate, buff, 10));

          display ();

        }

      /* USER CODE END WHILE */

      /* USER CODE BEGIN 3 */

    }

  /* USER CODE END 3 */

}

/** System Clock Configuration

 */

void

SystemClock_Config (void)

{

  RCC_OscInitTypeDef RCC_OscInitStruct;

  RCC_ClkInitTypeDef RCC_ClkInitStruct;

  RCC_PeriphCLKInitTypeDef PeriphClkInit;

  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;

  RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;

  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;

  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;

  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;

  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;

  if (HAL_RCC_OscConfig (&RCC_OscInitStruct) != HAL_OK)

    {

      Error_Handler ();

    }

  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK

      | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;

  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;

  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;

  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;

  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig (&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)

    {

      Error_Handler ();

    }

  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC;

  PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV6;

  if (HAL_RCCEx_PeriphCLKConfig (&PeriphClkInit) != HAL_OK)

    {

      Error_Handler ();

    }

  HAL_SYSTICK_Config (HAL_RCC_GetHCLKFreq () / 1000);

  HAL_SYSTICK_CLKSourceConfig (SYSTICK_CLKSOURCE_HCLK);

  /* SysTick_IRQn interrupt configuration */

  HAL_NVIC_SetPriority (SysTick_IRQn, 0, 0);

}

/* ADC1 init function */

static void

MX_ADC1_Init (void)

{

  ADC_ChannelConfTypeDef sConfig;

  /**Common config

   */

  hadc1.Instance = ADC1;

  hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;

  hadc1.Init.ContinuousConvMode = DISABLE;

  hadc1.Init.DiscontinuousConvMode = DISABLE;

  hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;

  hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;

  hadc1.Init.NbrOfConversion = 1;

  if (HAL_ADC_Init (&hadc1) != HAL_OK)

    {

      Error_Handler ();

    }

  /**Configure Regular Channel

   */

  sConfig.Channel = ADC_CHANNEL_0;

  sConfig.Rank = 1;

  sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;

  if (HAL_ADC_ConfigChannel (&hadc1, &sConfig) != HAL_OK)

    {

      Error_Handler ();

    }

}

/* SPI1 init function */

static void

MX_SPI1_Init (void)

{

  hspi1.Instance = SPI1;

  hspi1.Init.Mode = SPI_MODE_MASTER;

  hspi1.Init.Direction = SPI_DIRECTION_1LINE;

  hspi1.Init.DataSize = SPI_DATASIZE_8BIT;

  hspi1.Init.CLKPolarity = SPI_POLARITY_HIGH;

  hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;

  hspi1.Init.NSS = SPI_NSS_SOFT;

  hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_8;

  hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;

  hspi1.Init.TIMode = SPI_TIMODE_DISABLE;

  hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;

  hspi1.Init.CRCPolynomial = 10;

  if (HAL_SPI_Init (&hspi1) != HAL_OK)

    {

      Error_Handler ();

    }

}

/* USART1 init function */

static void

MX_USART1_UART_Init (void)

{

  huart1.Instance = USART1;

  huart1.Init.BaudRate = 115200;

  huart1.Init.WordLength = UART_WORDLENGTH_8B;

  huart1.Init.StopBits = UART_STOPBITS_1;

  huart1.Init.Parity = UART_PARITY_NONE;

  huart1.Init.Mode = UART_MODE_TX_RX;

  huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;

  huart1.Init.OverSampling = UART_OVERSAMPLING_16;

  if (HAL_UART_Init (&huart1) != HAL_OK)

    {

      Error_Handler ();

    }

}

/* USART2 init function */

static void

MX_USART2_UART_Init (void)

{

  huart2.Instance = USART2;

  huart2.Init.BaudRate = 115200;

  huart2.Init.WordLength = UART_WORDLENGTH_8B;

  huart2.Init.StopBits = UART_STOPBITS_1;

  huart2.Init.Parity = UART_PARITY_NONE;

  huart2.Init.Mode = UART_MODE_TX_RX;

  huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;

  huart2.Init.OverSampling = UART_OVERSAMPLING_16;

  if (HAL_UART_Init (&huart2) != HAL_OK)

    {

      Error_Handler ();

    }

}

/** Configure pins as

 * Analog

 * Input

 * Output

 * EVENT_OUT

 * EXTI

 */

static void

MX_GPIO_Init (void)

{

  GPIO_InitTypeDef GPIO_InitStruct;

  /* GPIO Ports Clock Enable */

  __HAL_RCC_GPIOD_CLK_ENABLE()

  ;

  __HAL_RCC_GPIOA_CLK_ENABLE()

  ;

  __HAL_RCC_GPIOC_CLK_ENABLE()

  ;

  __HAL_RCC_GPIOB_CLK_ENABLE()

  ;

  /*Configure GPIO pin Output Level */

  HAL_GPIO_WritePin (SPI_NSS1_GPIO_Port, SPI_NSS1_Pin, GPIO_PIN_SET);

  /*Configure GPIO pin Output Level */

  HAL_GPIO_WritePin (SPI1CD_GPIO_Port, SPI1CD_Pin, GPIO_PIN_RESET);

  /*Configure GPIO pin Output Level */

  HAL_GPIO_WritePin (GPIOC, SPI_RESET_Pin | USART3_INVERT_Pin | USB_PWR_Pin,

                     GPIO_PIN_RESET);

  /*Configure GPIO pin Output Level */

  HAL_GPIO_WritePin (SPI_NSS2_GPIO_Port, SPI_NSS2_Pin, GPIO_PIN_SET);

  /*Configure GPIO pins : SPI_NSS1_Pin SPI1CD_Pin */

  GPIO_InitStruct.Pin = SPI_NSS1_Pin | SPI1CD_Pin;

  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;

  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;

  HAL_GPIO_Init (GPIOA, &GPIO_InitStruct);

  /*Configure GPIO pins : SPI_RESET_Pin SPI_NSS2_Pin USART3_INVERT_Pin USB_PWR_Pin */

  GPIO_InitStruct.Pin = SPI_RESET_Pin | SPI_NSS2_Pin | USART3_INVERT_Pin

      | USB_PWR_Pin;

  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;

  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;

  HAL_GPIO_Init (GPIOC, &GPIO_InitStruct);

  /*Configure GPIO pins : SW1_PUSH_Pin SW1_I_Pin SW1_Q_Pin SW2_PUSH_Pin */

  GPIO_InitStruct.Pin = SW1_PUSH_Pin | SW1_I_Pin | SW1_Q_Pin | SW2_PUSH_Pin;

  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;

  GPIO_InitStruct.Pull = GPIO_PULLUP;

  HAL_GPIO_Init (GPIOB, &GPIO_InitStruct);

  /*Configure GPIO pins : SW2_I_Pin SW2_Q_Pin */

  GPIO_InitStruct.Pin = SW2_I_Pin | SW2_Q_Pin;

  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;

  GPIO_InitStruct.Pull = GPIO_PULLUP;

  HAL_GPIO_Init (GPIOC, &GPIO_InitStruct);

}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**

 * @brief  This function is executed in case of error occurrence.

 * @param  None

 * @retval None

 */

void

Error_Handler (void)

{

  /* USER CODE BEGIN Error_Handler */

  /* User can add his own implementation to report the HAL error return state */

  while (1)

    {

    }

  /* USER CODE END Error_Handler */

}

#ifdef USE_FULL_ASSERT

/**

 * @brief Reports the name of the source file and the source line number

 * where the assert_param error has occurred.

 * @param file: pointer to the source file name

 * @param line: assert_param error line source number

 * @retval None

 */

void assert_failed(uint8_t* file, uint32_t line)

  {

    /* USER CODE BEGIN 6 */

    /* User can add his own implementation to report the file name and line number,

     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

    /* USER CODE END 6 */

  }

#endif

/**

 * @}

 */

/**

 * @}

 */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/