Disregard AMS slave status error flag

Core/Inc/imd_monitoring.h

@@ -0,0 +1,36 @@
+#ifndef INC_IMD_MONITORING_H
+#define INC_IMD_MONITORING_H
+
+#include <stdint.h>
+
+#include "stm32f3xx_hal.h"
+
+typedef enum {
+  IMD_STATE_UNKNOWN,
+  IMD_STATE_SHORTCIRCUIT_SUPPLY,
+  IMD_STATE_SHORTCIRCUIT_GND,
+  IMD_STATE_NORMAL,
+  IMD_STATE_UNDERVOLTAGE,
+  IMD_STATE_SST,
+  IMD_STATE_DEV_ERROR,
+  IMD_STATE_GND_FAULT,
+} IMDState;
+
+typedef struct {
+  int ok;
+
+  IMDState state;
+  uint32_t r_iso;
+
+  uint32_t freq;
+  uint32_t duty_cycle;
+  uint32_t last_high;
+} IMDData;
+
+extern IMDData imd_data;
+
+void imd_init(TIM_HandleTypeDef *htim);
+
+void imd_update(void);
+
+#endif // INC_IMD_MONITORING_H

Core/Inc/main.h

@@ -61,6 +61,10 @@ void Error_Handler(void);
 #define HV_MISMATCH_ERR_GPIO_Port GPIOA
 #define RELAY_MISMATCH_ERR_Pin GPIO_PIN_1
 #define RELAY_MISMATCH_ERR_GPIO_Port GPIOA
+#define IMD_M_Pin GPIO_PIN_2
+#define IMD_M_GPIO_Port GPIOA
+#define IMD_OK_Pin GPIO_PIN_3
+#define IMD_OK_GPIO_Port GPIOA
 #define RELAY_CONNECTION_ERR_Pin GPIO_PIN_4
 #define RELAY_CONNECTION_ERR_GPIO_Port GPIOA
 #define HV_ACTIVE_Pin GPIO_PIN_5

Core/Inc/stm32f3xx_hal_conf.h

@@ -57,7 +57,7 @@
 /*#define HAL_RNG_MODULE_ENABLED   */
 /*#define HAL_RTC_MODULE_ENABLED   */
 /*#define HAL_SPI_MODULE_ENABLED   */
-/*#define HAL_TIM_MODULE_ENABLED   */
+#define HAL_TIM_MODULE_ENABLED
 #define HAL_UART_MODULE_ENABLED
 /*#define HAL_USART_MODULE_ENABLED   */
 /*#define HAL_IRDA_MODULE_ENABLED   */

Core/Inc/stm32f3xx_it.h

@@ -56,6 +56,7 @@ void DebugMon_Handler(void);
 void PendSV_Handler(void);
 void SysTick_Handler(void);
 void USB_LP_CAN_RX0_IRQHandler(void);
+void TIM1_BRK_TIM15_IRQHandler(void);
 /* USER CODE BEGIN EFP */
 
 /* USER CODE END EFP */

Core/Src/can.c

@@ -1,5 +1,6 @@
 #include "can.h"
 
+#include "imd_monitoring.h"
 #include "main.h"
 #include "shunt_monitoring.h"
 #include "slave_monitoring.h"
@@ -21,11 +22,17 @@ void can_init(CAN_HandleTypeDef *handle) {
 }
 
 HAL_StatusTypeDef can_send_status() {
-  uint8_t data[6];
+  uint8_t data[8];
   data[0] = ts_state.current_state | (sdc_closed << 7);
   data[1] = roundf(current_soc);
   ftcan_marshal_unsigned(&data[2], min_voltage, 2);
   ftcan_marshal_signed(&data[4], max_temp, 2);
+  data[6] = imd_data.state | (imd_data.ok << 7);
+  if (imd_data.r_iso < 0xFFF) {
+    data[7] = imd_data.r_iso >> 4;
+  } else {
+    data[7] = 0xFF;
+  }
   return ftcan_transmit(CAN_ID_AMS_STATUS, data, sizeof(data));
 }
 

Core/Src/imd_monitoring.c

@@ -0,0 +1,86 @@
+#include "imd_monitoring.h"
+
+#include "main.h"
+
+#define FREQ_TIMER 1000 // Hz
+
+#define FREQ_TOLERANCE 1     // Hz
+#define FREQ_NORMAL 10       // Hz
+#define FREQ_UNDERVOLTAGE 20 // Hz
+#define FREQ_SST 30          // Hz
+#define FREQ_DEV_ERROR 40    // Hz
+#define FREQ_GND_FAULT 50    // Hz
+
+#define RISO_MIN_DUTY_CYCLE 8 // %
+#define RISO_MAX 50000        // kOhm
+
+#define PWM_TIMEOUT 200 // ms
+
+IMDData imd_data;
+
+static TIM_HandleTypeDef *htim;
+
+void imd_init(TIM_HandleTypeDef *handle) {
+  htim = handle;
+  HAL_TIM_IC_Start_IT(htim, TIM_CHANNEL_1);
+  HAL_TIM_IC_Start(htim, TIM_CHANNEL_2);
+
+  imd_data.state = IMD_STATE_UNKNOWN;
+}
+
+void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *handle) {
+  if (handle != htim || htim->Channel != HAL_TIM_ACTIVE_CHANNEL_1) {
+    return;
+  }
+  uint32_t period = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_1);
+  if (period == 0) {
+    // First edge, ignore
+    return;
+  }
+  imd_data.last_high = HAL_GetTick();
+
+  imd_data.freq = FREQ_TIMER / period;
+  uint32_t high_time = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_2);
+  imd_data.duty_cycle = (100 * high_time) / period;
+
+  // Check PWM frequency for state determination
+  if (imd_data.freq > FREQ_NORMAL - FREQ_TOLERANCE &&
+      imd_data.freq < FREQ_NORMAL + FREQ_TOLERANCE) {
+    imd_data.state = IMD_STATE_NORMAL;
+  } else if (imd_data.freq > FREQ_UNDERVOLTAGE - FREQ_TOLERANCE &&
+             imd_data.freq < FREQ_UNDERVOLTAGE + FREQ_TOLERANCE) {
+    imd_data.state = IMD_STATE_UNDERVOLTAGE;
+  } else if (imd_data.freq > FREQ_SST - FREQ_TOLERANCE &&
+             imd_data.freq < FREQ_SST + FREQ_TOLERANCE) {
+    imd_data.state = IMD_STATE_SST;
+  } else if (imd_data.freq > FREQ_DEV_ERROR - FREQ_TOLERANCE &&
+             imd_data.freq < FREQ_DEV_ERROR + FREQ_TOLERANCE) {
+    imd_data.state = IMD_STATE_DEV_ERROR;
+  } else if (imd_data.freq > FREQ_GND_FAULT - FREQ_TOLERANCE &&
+             imd_data.freq < FREQ_GND_FAULT + FREQ_TOLERANCE) {
+    imd_data.state = IMD_STATE_GND_FAULT;
+  } else {
+    imd_data.state = IMD_STATE_UNKNOWN;
+  }
+
+  // Calculate R_iso
+  if (imd_data.state == IMD_STATE_NORMAL ||
+      imd_data.state == IMD_STATE_UNDERVOLTAGE) {
+    if (imd_data.duty_cycle < RISO_MIN_DUTY_CYCLE) {
+      imd_data.r_iso = RISO_MAX;
+    } else {
+      imd_data.r_iso = (90 * 1200) / (imd_data.duty_cycle - 5) - 1200;
+    }
+  }
+}
+
+void imd_update() {
+  imd_data.ok = HAL_GPIO_ReadPin(IMD_OK_GPIO_Port, IMD_OK_Pin);
+  if (HAL_GetTick() - imd_data.last_high > PWM_TIMEOUT) {
+    if (HAL_GPIO_ReadPin(IMD_M_GPIO_Port, IMD_M_Pin) == GPIO_PIN_SET) {
+      imd_data.state = IMD_STATE_SHORTCIRCUIT_SUPPLY;
+    } else {
+      imd_data.state = IMD_STATE_SHORTCIRCUIT_GND;
+    }
+  }
+}

Core/Src/main.c

@@ -22,14 +22,15 @@
 /* Private includes ----------------------------------------------------------*/
 /* USER CODE BEGIN Includes */
 #include "can.h"
-#include "soc_estimation.h"
-#include "stm32f3xx_hal.h"
-#include "stm32f3xx_hal_gpio.h"
-
+#include "imd_monitoring.h"
 #include "shunt_monitoring.h"
 #include "slave_monitoring.h"
+#include "soc_estimation.h"
 #include "ts_state_machine.h"
 
+#include "stm32f3xx_hal.h"
+#include "stm32f3xx_hal_gpio.h"
+
 /* USER CODE END Includes */
 
 /* Private typedef -----------------------------------------------------------*/
@@ -52,6 +53,10 @@ ADC_HandleTypeDef hadc2;
 
 CAN_HandleTypeDef hcan;
 
+I2C_HandleTypeDef hi2c1;
+
+TIM_HandleTypeDef htim15;
+
 UART_HandleTypeDef huart1;
 
 /* USER CODE BEGIN PV */
@@ -64,6 +69,8 @@ static void MX_GPIO_Init(void);
 static void MX_ADC2_Init(void);
 static void MX_CAN_Init(void);
 static void MX_USART1_UART_Init(void);
+static void MX_I2C1_Init(void);
+static void MX_TIM15_Init(void);
 /* USER CODE BEGIN PFP */
 
 /* USER CODE END PFP */
@@ -116,12 +123,15 @@ int main(void) {
   MX_ADC2_Init();
   MX_CAN_Init();
   MX_USART1_UART_Init();
+  MX_I2C1_Init();
+  MX_TIM15_Init();
   /* USER CODE BEGIN 2 */
   can_init(&hcan);
   slaves_init();
   shunt_init();
   ts_sm_init();
   soc_init();
+  imd_init(&htim15);
   HAL_GPIO_WritePin(AMS_NERROR_GPIO_Port, AMS_NERROR_Pin, GPIO_PIN_SET);
   /* USER CODE END 2 */
 
@@ -139,6 +149,7 @@ int main(void) {
     shunt_check();
     ts_sm_update();
     soc_update();
+    imd_update();
     can_send_status();
 
     loop_delay();
@@ -183,9 +194,10 @@ void SystemClock_Config(void) {
     Error_Handler();
   }
   PeriphClkInit.PeriphClockSelection =
-      RCC_PERIPHCLK_USART1 | RCC_PERIPHCLK_ADC12;
+      RCC_PERIPHCLK_USART1 | RCC_PERIPHCLK_I2C1 | RCC_PERIPHCLK_ADC12;
   PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;
   PeriphClkInit.Adc12ClockSelection = RCC_ADC12PLLCLK_DIV1;
+  PeriphClkInit.I2c1ClockSelection = RCC_I2C1CLKSOURCE_HSI;
   if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK) {
     Error_Handler();
   }
@@ -278,6 +290,108 @@ static void MX_CAN_Init(void) {
   /* USER CODE END CAN_Init 2 */
 }
 
+/**
+ * @brief I2C1 Initialization Function
+ * @param None
+ * @retval None
+ */
+static void MX_I2C1_Init(void) {
+
+  /* USER CODE BEGIN I2C1_Init 0 */
+
+  /* USER CODE END I2C1_Init 0 */
+
+  /* USER CODE BEGIN I2C1_Init 1 */
+
+  /* USER CODE END I2C1_Init 1 */
+  hi2c1.Instance = I2C1;
+  hi2c1.Init.Timing = 0x2000090E;
+  hi2c1.Init.OwnAddress1 = 0;
+  hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
+  hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
+  hi2c1.Init.OwnAddress2 = 0;
+  hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
+  hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
+  hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
+  if (HAL_I2C_Init(&hi2c1) != HAL_OK) {
+    Error_Handler();
+  }
+
+  /** Configure Analogue filter
+   */
+  if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK) {
+    Error_Handler();
+  }
+
+  /** Configure Digital filter
+   */
+  if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK) {
+    Error_Handler();
+  }
+  /* USER CODE BEGIN I2C1_Init 2 */
+
+  /* USER CODE END I2C1_Init 2 */
+}
+
+/**
+ * @brief TIM15 Initialization Function
+ * @param None
+ * @retval None
+ */
+static void MX_TIM15_Init(void) {
+
+  /* USER CODE BEGIN TIM15_Init 0 */
+
+  /* USER CODE END TIM15_Init 0 */
+
+  TIM_SlaveConfigTypeDef sSlaveConfig = {0};
+  TIM_IC_InitTypeDef sConfigIC = {0};
+  TIM_MasterConfigTypeDef sMasterConfig = {0};
+
+  /* USER CODE BEGIN TIM15_Init 1 */
+
+  /* USER CODE END TIM15_Init 1 */
+  htim15.Instance = TIM15;
+  htim15.Init.Prescaler = 16000 - 1;
+  htim15.Init.CounterMode = TIM_COUNTERMODE_UP;
+  htim15.Init.Period = 65535;
+  htim15.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
+  htim15.Init.RepetitionCounter = 0;
+  htim15.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
+  if (HAL_TIM_IC_Init(&htim15) != HAL_OK) {
+    Error_Handler();
+  }
+  sSlaveConfig.SlaveMode = TIM_SLAVEMODE_RESET;
+  sSlaveConfig.InputTrigger = TIM_TS_TI1FP1;
+  sSlaveConfig.TriggerPolarity = TIM_INPUTCHANNELPOLARITY_RISING;
+  sSlaveConfig.TriggerPrescaler = TIM_ICPSC_DIV1;
+  sSlaveConfig.TriggerFilter = 0;
+  if (HAL_TIM_SlaveConfigSynchro(&htim15, &sSlaveConfig) != HAL_OK) {
+    Error_Handler();
+  }
+  sConfigIC.ICPolarity = TIM_INPUTCHANNELPOLARITY_RISING;
+  sConfigIC.ICSelection = TIM_ICSELECTION_DIRECTTI;
+  sConfigIC.ICPrescaler = TIM_ICPSC_DIV1;
+  sConfigIC.ICFilter = 0;
+  if (HAL_TIM_IC_ConfigChannel(&htim15, &sConfigIC, TIM_CHANNEL_1) != HAL_OK) {
+    Error_Handler();
+  }
+  sConfigIC.ICPolarity = TIM_INPUTCHANNELPOLARITY_FALLING;
+  sConfigIC.ICSelection = TIM_ICSELECTION_INDIRECTTI;
+  if (HAL_TIM_IC_ConfigChannel(&htim15, &sConfigIC, TIM_CHANNEL_2) != HAL_OK) {
+    Error_Handler();
+  }
+  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
+  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
+  if (HAL_TIMEx_MasterConfigSynchronization(&htim15, &sMasterConfig) !=
+      HAL_OK) {
+    Error_Handler();
+  }
+  /* USER CODE BEGIN TIM15_Init 2 */
+
+  /* USER CODE END TIM15_Init 2 */
+}
+
 /**
  * @brief USART1 Initialization Function
  * @param None
@@ -338,11 +452,11 @@ static void MX_GPIO_Init(void) {
   HAL_GPIO_WritePin(PRECHARGE_CTRL_GPIO_Port, PRECHARGE_CTRL_Pin,
                     GPIO_PIN_RESET);
 
-  /*Configure GPIO pins : HV_MISMATCH_ERR_Pin RELAY_MISMATCH_ERR_Pin
+  /*Configure GPIO pins : HV_MISMATCH_ERR_Pin RELAY_MISMATCH_ERR_Pin IMD_OK_Pin
      RELAY_CONNECTION_ERR_Pin HV_ACTIVE_Pin NEG_AIR_CLOSED_Pin
      POS_AIR_CLOSED_Pin */
   GPIO_InitStruct.Pin = HV_MISMATCH_ERR_Pin | RELAY_MISMATCH_ERR_Pin |
-                        RELAY_CONNECTION_ERR_Pin | HV_ACTIVE_Pin |
+                        IMD_OK_Pin | RELAY_CONNECTION_ERR_Pin | HV_ACTIVE_Pin |
                         NEG_AIR_CLOSED_Pin | POS_AIR_CLOSED_Pin;
   GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
   GPIO_InitStruct.Pull = GPIO_NOPULL;

Core/Src/slave_monitoring.c

@@ -91,9 +91,10 @@ void slaves_check() {
 }
 
 void slaves_handle_panic(const uint8_t *data) {
-  uint8_t slave_id = ftcan_unmarshal_unsigned(&data, 1);
+  const uint8_t **ptr = &data;
+  uint8_t slave_id = ftcan_unmarshal_unsigned(ptr, 1);
   uint8_t idx = get_slave_index(slave_id);
-  uint8_t error_kind = ftcan_unmarshal_unsigned(&data, 1);
+  uint8_t error_kind = ftcan_unmarshal_unsigned(ptr, 1);
   switch (error_kind) {
   case SLAVE_PANIC_OT:
     slaves[idx].error.kind = SLAVE_ERR_OT;
@@ -118,11 +119,7 @@ void slaves_handle_status(const uint8_t *data) {
   uint8_t slave_id = data[0] & 0x7F;
   uint8_t idx = get_slave_index(slave_id);
   int error = data[0] & 0x80;
-  if (error) {
-    if (slaves[idx].error.kind == SLAVE_ERR_NONE) {
-      slaves[idx].error.kind = SLAVE_ERR_UNKNOWN;
-    }
-  } else {
+  if (!error) {
     slaves[idx].error.kind = SLAVE_ERR_NONE;
   }
   slaves[idx].soc = data[1];

Core/Src/stm32f3xx_hal_msp.c

@@ -207,6 +207,149 @@ void HAL_CAN_MspDeInit(CAN_HandleTypeDef* hcan)
 
 }
 
+/**
+* @brief I2C MSP Initialization
+* This function configures the hardware resources used in this example
+* @param hi2c: I2C handle pointer
+* @retval None
+*/
+void HAL_I2C_MspInit(I2C_HandleTypeDef* hi2c)
+{
+  GPIO_InitTypeDef GPIO_InitStruct = {0};
+  if(hi2c->Instance==I2C1)
+  {
+  /* USER CODE BEGIN I2C1_MspInit 0 */
+
+  /* USER CODE END I2C1_MspInit 0 */
+
+    __HAL_RCC_GPIOA_CLK_ENABLE();
+    __HAL_RCC_GPIOB_CLK_ENABLE();
+    /**I2C1 GPIO Configuration
+    PA15     ------> I2C1_SCL
+    PB9     ------> I2C1_SDA
+    */
+    GPIO_InitStruct.Pin = GPIO_PIN_15;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
+    GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
+    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+    GPIO_InitStruct.Pin = GPIO_PIN_9;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
+    GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
+    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+
+    /* Peripheral clock enable */
+    __HAL_RCC_I2C1_CLK_ENABLE();
+  /* USER CODE BEGIN I2C1_MspInit 1 */
+
+  /* USER CODE END I2C1_MspInit 1 */
+  }
+
+}
+
+/**
+* @brief I2C MSP De-Initialization
+* This function freeze the hardware resources used in this example
+* @param hi2c: I2C handle pointer
+* @retval None
+*/
+void HAL_I2C_MspDeInit(I2C_HandleTypeDef* hi2c)
+{
+  if(hi2c->Instance==I2C1)
+  {
+  /* USER CODE BEGIN I2C1_MspDeInit 0 */
+
+  /* USER CODE END I2C1_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_I2C1_CLK_DISABLE();
+
+    /**I2C1 GPIO Configuration
+    PA15     ------> I2C1_SCL
+    PB9     ------> I2C1_SDA
+    */
+    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_15);
+
+    HAL_GPIO_DeInit(GPIOB, GPIO_PIN_9);
+
+  /* USER CODE BEGIN I2C1_MspDeInit 1 */
+
+  /* USER CODE END I2C1_MspDeInit 1 */
+  }
+
+}
+
+/**
+* @brief TIM_IC MSP Initialization
+* This function configures the hardware resources used in this example
+* @param htim_ic: TIM_IC handle pointer
+* @retval None
+*/
+void HAL_TIM_IC_MspInit(TIM_HandleTypeDef* htim_ic)
+{
+  GPIO_InitTypeDef GPIO_InitStruct = {0};
+  if(htim_ic->Instance==TIM15)
+  {
+  /* USER CODE BEGIN TIM15_MspInit 0 */
+
+  /* USER CODE END TIM15_MspInit 0 */
+    /* Peripheral clock enable */
+    __HAL_RCC_TIM15_CLK_ENABLE();
+
+    __HAL_RCC_GPIOA_CLK_ENABLE();
+    /**TIM15 GPIO Configuration
+    PA2     ------> TIM15_CH1
+    */
+    GPIO_InitStruct.Pin = IMD_M_Pin;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+    GPIO_InitStruct.Alternate = GPIO_AF9_TIM15;
+    HAL_GPIO_Init(IMD_M_GPIO_Port, &GPIO_InitStruct);
+
+    /* TIM15 interrupt Init */
+    HAL_NVIC_SetPriority(TIM1_BRK_TIM15_IRQn, 0, 0);
+    HAL_NVIC_EnableIRQ(TIM1_BRK_TIM15_IRQn);
+  /* USER CODE BEGIN TIM15_MspInit 1 */
+
+  /* USER CODE END TIM15_MspInit 1 */
+  }
+
+}
+
+/**
+* @brief TIM_IC MSP De-Initialization
+* This function freeze the hardware resources used in this example
+* @param htim_ic: TIM_IC handle pointer
+* @retval None
+*/
+void HAL_TIM_IC_MspDeInit(TIM_HandleTypeDef* htim_ic)
+{
+  if(htim_ic->Instance==TIM15)
+  {
+  /* USER CODE BEGIN TIM15_MspDeInit 0 */
+
+  /* USER CODE END TIM15_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_TIM15_CLK_DISABLE();
+
+    /**TIM15 GPIO Configuration
+    PA2     ------> TIM15_CH1
+    */
+    HAL_GPIO_DeInit(IMD_M_GPIO_Port, IMD_M_Pin);
+
+    /* TIM15 interrupt DeInit */
+    HAL_NVIC_DisableIRQ(TIM1_BRK_TIM15_IRQn);
+  /* USER CODE BEGIN TIM15_MspDeInit 1 */
+
+  /* USER CODE END TIM15_MspDeInit 1 */
+  }
+
+}
+
 /**
 * @brief UART MSP Initialization
 * This function configures the hardware resources used in this example

Core/Src/stm32f3xx_it.c

@@ -56,6 +56,7 @@
 
 /* External variables --------------------------------------------------------*/
 extern CAN_HandleTypeDef hcan;
+extern TIM_HandleTypeDef htim15;
 /* USER CODE BEGIN EV */
 
 /* USER CODE END EV */
@@ -217,6 +218,20 @@ void USB_LP_CAN_RX0_IRQHandler(void)
   /* USER CODE END USB_LP_CAN_RX0_IRQn 1 */
 }
 
+/**
+  * @brief This function handles TIM1 break and TIM15 interrupts.
+  */
+void TIM1_BRK_TIM15_IRQHandler(void)
+{
+  /* USER CODE BEGIN TIM1_BRK_TIM15_IRQn 0 */
+
+  /* USER CODE END TIM1_BRK_TIM15_IRQn 0 */
+  HAL_TIM_IRQHandler(&htim15);
+  /* USER CODE BEGIN TIM1_BRK_TIM15_IRQn 1 */
+
+  /* USER CODE END TIM1_BRK_TIM15_IRQn 1 */
+}
+
 /* USER CODE BEGIN 1 */
 
 /* USER CODE END 1 */

STM32Make.make

@@ -38,6 +38,7 @@ BUILD_DIR = build
 C_SOURCES =  \
 Core/Lib/can-halal/can-halal.c \
 Core/Src/can.c \
+Core/Src/imd_monitoring.c \
 Core/Src/main.c \
 Core/Src/shunt_monitoring.c \
 Core/Src/slave_monitoring.c \

ams-master-23.ioc

@@ -26,45 +26,51 @@ Mcu.CPN=STM32F302CBT6
 Mcu.Family=STM32F3
 Mcu.IP0=ADC2
 Mcu.IP1=CAN
-Mcu.IP2=NVIC
-Mcu.IP3=RCC
-Mcu.IP4=SYS
-Mcu.IP5=USART1
-Mcu.IPNb=6
+Mcu.IP2=I2C1
+Mcu.IP3=NVIC
+Mcu.IP4=RCC
+Mcu.IP5=SYS
+Mcu.IP6=TIM15
+Mcu.IP7=USART1
+Mcu.IPNb=8
 Mcu.Name=STM32F302C(B-C)Tx
 Mcu.Package=LQFP48
 Mcu.Pin0=PF0-OSC_IN
 Mcu.Pin1=PF1-OSC_OUT
-Mcu.Pin10=PB2
-Mcu.Pin11=PB10
-Mcu.Pin12=PB11
-Mcu.Pin13=PB12
-Mcu.Pin14=PB13
-Mcu.Pin15=PB14
-Mcu.Pin16=PB15
-Mcu.Pin17=PA8
-Mcu.Pin18=PA9
-Mcu.Pin19=PA10
+Mcu.Pin10=PB0
+Mcu.Pin11=PB1
+Mcu.Pin12=PB2
+Mcu.Pin13=PB10
+Mcu.Pin14=PB11
+Mcu.Pin15=PB12
+Mcu.Pin16=PB13
+Mcu.Pin17=PB14
+Mcu.Pin18=PB15
+Mcu.Pin19=PA8
 Mcu.Pin2=PA0
-Mcu.Pin20=PA11
-Mcu.Pin21=PA12
-Mcu.Pin22=PA13
-Mcu.Pin23=PA14
-Mcu.Pin24=PB3
-Mcu.Pin25=PB4
-Mcu.Pin26=PB5
-Mcu.Pin27=PB6
-Mcu.Pin28=PB7
-Mcu.Pin29=PB8
+Mcu.Pin20=PA9
+Mcu.Pin21=PA10
+Mcu.Pin22=PA11
+Mcu.Pin23=PA12
+Mcu.Pin24=PA13
+Mcu.Pin25=PA14
+Mcu.Pin26=PA15
+Mcu.Pin27=PB3
+Mcu.Pin28=PB4
+Mcu.Pin29=PB5
 Mcu.Pin3=PA1
-Mcu.Pin30=VP_SYS_VS_Systick
-Mcu.Pin4=PA4
-Mcu.Pin5=PA5
-Mcu.Pin6=PA6
-Mcu.Pin7=PA7
-Mcu.Pin8=PB0
-Mcu.Pin9=PB1
-Mcu.PinsNb=31
+Mcu.Pin30=PB6
+Mcu.Pin31=PB7
+Mcu.Pin32=PB8
+Mcu.Pin33=PB9
+Mcu.Pin34=VP_SYS_VS_Systick
+Mcu.Pin4=PA2
+Mcu.Pin5=PA3
+Mcu.Pin6=PA4
+Mcu.Pin7=PA5
+Mcu.Pin8=PA6
+Mcu.Pin9=PA7
+Mcu.PinsNb=35
 Mcu.ThirdPartyNb=0
 Mcu.UserConstants=
 Mcu.UserName=STM32F302CBTx
@@ -80,6 +86,7 @@ NVIC.PendSV_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
 NVIC.PriorityGroup=NVIC_PRIORITYGROUP_4
 NVIC.SVCall_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
 NVIC.SysTick_IRQn=true\:15\:0\:false\:false\:true\:false\:true\:false
+NVIC.TIM1_BRK_TIM15_IRQn=true\:0\:0\:false\:false\:true\:true\:true\:true
 NVIC.USB_LP_CAN_RX0_IRQn=true\:0\:0\:false\:false\:true\:true\:true\:true
 NVIC.UsageFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
 PA0.GPIOParameters=GPIO_Label
@@ -105,6 +112,16 @@ PA13.Signal=SYS_JTMS-SWDIO
 PA14.Locked=true
 PA14.Mode=Trace_Asynchronous_SW
 PA14.Signal=SYS_JTCK-SWCLK
+PA15.Mode=I2C
+PA15.Signal=I2C1_SCL
+PA2.GPIOParameters=GPIO_Label
+PA2.GPIO_Label=IMD_M
+PA2.Locked=true
+PA2.Signal=S_TIM15_CH1
+PA3.GPIOParameters=GPIO_Label
+PA3.GPIO_Label=IMD_OK
+PA3.Locked=true
+PA3.Signal=GPIO_Input
 PA4.GPIOParameters=GPIO_Label
 PA4.GPIO_Label=RELAY_CONNECTION_ERR
 PA4.Locked=true
@@ -188,6 +205,8 @@ PB8.GPIOParameters=GPIO_Label
 PB8.GPIO_Label=AMS_NERROR
 PB8.Locked=true
 PB8.Signal=GPIO_Output
+PB9.Mode=I2C
+PB9.Signal=I2C1_SDA
 PF0-OSC_IN.Mode=HSE-External-Oscillator
 PF0-OSC_IN.Signal=RCC_OSC_IN
 PF1-OSC_OUT.Mode=HSE-External-Oscillator
@@ -221,7 +240,7 @@ ProjectManager.StackSize=0x400
 ProjectManager.TargetToolchain=Makefile
 ProjectManager.ToolChainLocation=
 ProjectManager.UnderRoot=false
-ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_ADC2_Init-ADC2-false-HAL-true,4-MX_CAN_Init-CAN-false-HAL-true,5-MX_USART1_UART_Init-USART1-false-HAL-true
+ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_ADC2_Init-ADC2-false-HAL-true,4-MX_CAN_Init-CAN-false-HAL-true,5-MX_USART1_UART_Init-USART1-false-HAL-true,6-MX_I2C1_Init-I2C1-false-HAL-true,7-MX_TIM15_Init-TIM15-false-HAL-true
 RCC.ADC12outputFreq_Value=16000000
 RCC.AHBFreq_Value=16000000
 RCC.APB1Freq_Value=16000000
@@ -256,6 +275,10 @@ RCC.USART2Freq_Value=16000000
 RCC.USART3Freq_Value=16000000
 RCC.USBFreq_Value=16000000
 RCC.VCOOutput2Freq_Value=4000000
+SH.S_TIM15_CH1.0=TIM15_CH1,PWM_Input_1
+SH.S_TIM15_CH1.ConfNb=1
+TIM15.IPParameters=Prescaler
+TIM15.Prescaler=16000-1
 USART1.IPParameters=VirtualMode-Asynchronous
 USART1.VirtualMode-Asynchronous=VM_ASYNC
 VP_SYS_VS_Systick.Mode=SysTick