#include "baseCPU2.h"+
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#include "i2c.h"+
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#include "scheduler.h"+
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+
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/* Private typedef -----------------------------------------------------------*/+
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/* Private define ------------------------------------------------------------*/+
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/* Private macro -------------------------------------------------------------*/+
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+
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+
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//  ===============================================================================+
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//	I2C addresses - see i2c.h+
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//  ===============================================================================+
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+
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I2C_HandleTypeDef I2cHandle;+
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+
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+
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/*+
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static void I2C_Error_Handler(void)+
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{+
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  while(1)+
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  {+
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  }+
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}+
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*/+
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+
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GPIO_PinState HAL_I2C_Read_Data_PIN(void)+
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{+
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	return HAL_GPIO_ReadPin(I2Cx_SDA_GPIO_PORT,I2Cx_SDA_PIN);+
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}+
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+
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void HAL_I2C_Send_One_CLOCK(void)+
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{+
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	HAL_GPIO_WritePin(I2Cx_SCL_GPIO_PORT, I2Cx_SCL_PIN, GPIO_PIN_RESET);+
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	HAL_Delay(1); +
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	HAL_GPIO_WritePin(I2Cx_SCL_GPIO_PORT, I2Cx_SCL_PIN, GPIO_PIN_SET);+
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	HAL_Delay(1);+
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}+
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+
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GPIO_PinState MX_I2C1_TestAndClear(void)+
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{+
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	GPIO_PinState retval;+
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	uint8_t repeatcnt = 3;+
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+
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	I2C_DeInit();+
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	HAL_I2C_ManualControl_MspInit();+
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	+
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/* The SDA line is expected to be HIGH if no com is pending => send dummy clock signals if that is not the case */+
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	do+
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	{+
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		for(int i=0; i<20;i++)+
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		{+
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			if(HAL_I2C_Read_Data_PIN() == GPIO_PIN_RESET)+
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				HAL_I2C_Send_One_CLOCK();+
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			else+
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				break;+
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		}+
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		retval = HAL_I2C_Read_Data_PIN();+
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	}while ((repeatcnt-- > 0) && (retval != GPIO_PIN_SET));+
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+
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	return retval;+
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}+
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+
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HAL_StatusTypeDef MX_I2C1_Init(void)+
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{+
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  I2cHandle.Instance             = I2Cx;+
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  I2cHandle.Init.AddressingMode  = I2C_ADDRESSINGMODE_7BIT;+
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  I2cHandle.Init.ClockSpeed      = 88000; /* Reduced to avoid behavior described in errata: Mismatch on the “Setup time for a repeated Start condition” */+
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  I2cHandle.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;+
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  I2cHandle.Init.DutyCycle       = I2C_DUTYCYCLE_2;				/* don't care if not in fast mode */+
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  I2cHandle.Init.GeneralCallMode = I2C_GENERALCALL_DISABLED;+
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  I2cHandle.Init.NoStretchMode   = I2C_NOSTRETCH_DISABLED;+
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  I2cHandle.Init.OwnAddress1     = 0x01;						/* don't care because of master mode */+
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+
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/* According to documentation setting filters before I2C initialization is recommended */+
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	/* HAL_I2CEx_AnalogFilter_Config(&I2cHandle, I2C_ANALOGFILTER_ENABLED); */+
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	HAL_I2CEx_ConfigDigitalFilter(&I2cHandle,0x0F);+
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+
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	global.I2C_SystemStatus = HAL_I2C_Init(&I2cHandle);+
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+
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	if(global.dataSendToSlavePending)+
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	{+
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		scheduleSpecial_Evaluate_DataSendToSlave();+
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	}+
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	return global.I2C_SystemStatus;+
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}+
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+
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+
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void I2C_DeInit(void)+
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{+
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	HAL_I2C_DeInit(&I2cHandle);+
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}+
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+
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static uint8_t i2c_errors = 0;+
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+
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void I2C_Error_count(void)+
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{+
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	i2c_errors++;+
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}+
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+
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+
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HAL_StatusTypeDef I2C_Master_Transmit(  uint16_t DevAddress, uint8_t *pData, uint16_t Size)+
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{+
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	if(global.I2C_SystemStatus != HAL_OK)+
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		return global.I2C_SystemStatus;+
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+
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	global.I2C_SystemStatus = HAL_I2C_Master_Transmit(&I2cHandle, DevAddress,  pData, Size, 10);+
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	if(global.I2C_SystemStatus != HAL_OK)+
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	{+
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		I2C_Error_count();+
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	}+
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	+
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	return global.I2C_SystemStatus;+
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}+
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+
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HAL_StatusTypeDef I2C_Master_Receive(  uint16_t DevAddress, uint8_t *pData, uint16_t Size)+
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{+
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	if(global.I2C_SystemStatus != HAL_OK)+
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		return global.I2C_SystemStatus;+
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+
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	global.I2C_SystemStatus = HAL_I2C_Master_Receive(&I2cHandle, DevAddress,  pData, Size, 10);+
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	if(global.I2C_SystemStatus != HAL_OK)+
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	{+
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		I2C_Error_count();+
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	}+
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+
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	return global.I2C_SystemStatus;+
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}+
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