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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;

        static const int xp = 128 - 42;

    for(disp=0; disp< 2; disp++)

    {

        select_display(disp);

           ssd1306_begin(1, 0);

           clearDisplay();

           dim(0);

        //font_puts(

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

           dial_origin(xp, 40);

           dial_size(40);

           dial_draw_scale(10, 20, 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);

                                // 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);

                                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

                                if (Observation != OldObservation

                                                || ObservationIndex != OldObservationIndex) {

                                        dial_draw_scale(

                                                        DisplayInfo[Observation].Low

                                                                        / DisplayInfo[Observation].TickScale,

                                                        DisplayInfo[Observation].High

                                                                        / DisplayInfo[Observation].TickScale, 16,

                                                        1);

                                        int len;

                                        if (ObservationIndex > 0) {

                                                len=4;

                                                buff[5] = ObservationIndex + '1';

                                        } else {

                                                len=5;

                                        }

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

                                        {

                                                buff[i] = DisplayInfo[Observation].name;

                                        }

                                        print_large_string(buff, 0, 0, 5); // 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);

                        }

                        // print value overlaid by needle

                        // this is actual reading

                        print_digits(xp - 16, 48, 4, 3, c);

                        dial_draw_needle(dial0);

                        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****/