view Small_CPU/Src/i2c.c @ 272:74a8296a2318 write-from-sim

cleanup: simplify stateUsed usage Get rid of some local stateUsed pointers used to differentiate between normal dive and simulator mode. Simply use the (properly set) global data for this. Its rather useless to do this test on countless locations. Trivial cleanup. Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
author Jan Mulder <jlmulder@xs4all.nl>
date Sat, 27 Apr 2019 12:27:46 +0200
parents 2b9775f71e30
children 4fe5400567e7
line wrap: on
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#include "baseCPU2.h"
#include "i2c.h"
#include "scheduler.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/


//  ===============================================================================
//	I2C addresses - see i2c.h
//  ===============================================================================

I2C_HandleTypeDef I2cHandle;


/*
static void I2C_Error_Handler(void)
{
  while(1)
  {
  }
}
*/

GPIO_PinState HAL_I2C_Read_Data_PIN(void)
{
	return HAL_GPIO_ReadPin(I2Cx_SDA_GPIO_PORT,I2Cx_SDA_PIN);
}

void HAL_I2C_Send_One_CLOCK(void)
{
	HAL_GPIO_WritePin(I2Cx_SCL_GPIO_PORT, I2Cx_SCL_PIN, GPIO_PIN_RESET);
	HAL_Delay(10);
	HAL_GPIO_WritePin(I2Cx_SCL_GPIO_PORT, I2Cx_SCL_PIN, GPIO_PIN_SET);
	HAL_Delay(10);
}

GPIO_PinState MX_I2C1_TestAndClear(void)
{
	I2C_DeInit();
	HAL_I2C_ManualControl_MspInit();
	for(int i=0; i<9;i++)
	{
		if(HAL_I2C_Read_Data_PIN() == GPIO_PIN_RESET)
			HAL_I2C_Send_One_CLOCK();
		else
			break;
	}
	return HAL_I2C_Read_Data_PIN();
}

HAL_StatusTypeDef MX_I2C1_Init(void)
{
	I2cHandle.Instance             = I2Cx;
  I2cHandle.Init.AddressingMode  = I2C_ADDRESSINGMODE_7BIT;
  I2cHandle.Init.ClockSpeed      = 100000;//400000; REDUCED for compatibility with  HMC5583L + MMA8452Q
  I2cHandle.Init.DualAddressMode = I2C_DUALADDRESS_DISABLED;
  I2cHandle.Init.DutyCycle       = I2C_DUTYCYCLE_2;
  I2cHandle.Init.GeneralCallMode = I2C_GENERALCALL_DISABLED;
  I2cHandle.Init.NoStretchMode   = I2C_NOSTRETCH_DISABLED;
  I2cHandle.Init.OwnAddress1     = 0x01;

	global.I2C_SystemStatus = HAL_I2C_Init(&I2cHandle);
	HAL_I2CEx_AnalogFilter_Config(&I2cHandle, I2C_ANALOGFILTER_ENABLED);
	HAL_I2CEx_ConfigDigitalFilter(&I2cHandle,0x0F);

	if(global.dataSendToSlavePending)
	{
		scheduleSpecial_Evaluate_DataSendToSlave();
	}
	return global.I2C_SystemStatus;
}


void I2C_DeInit(void)
{
	HAL_I2C_DeInit(&I2cHandle);
}

static uint8_t i2c_errors = 0;

void I2C_Error_count(void)
{
	i2c_errors++;
}

HAL_StatusTypeDef I2C_Master_Transmit(  uint16_t DevAddress, uint8_t *pData, uint16_t Size)
{
	if(global.I2C_SystemStatus != HAL_OK)
		return global.I2C_SystemStatus;

	global.I2C_SystemStatus = HAL_I2C_Master_Transmit(&I2cHandle, DevAddress,  pData, Size, 2);
	if(global.I2C_SystemStatus != HAL_OK)
	{
		I2C_Error_count();
	}
	
	return global.I2C_SystemStatus;
}

HAL_StatusTypeDef I2C_Master_Receive(  uint16_t DevAddress, uint8_t *pData, uint16_t Size)
{
	if(global.I2C_SystemStatus != HAL_OK)
		return global.I2C_SystemStatus;

	global.I2C_SystemStatus = HAL_I2C_Master_Receive(&I2cHandle, DevAddress,  pData, Size, 10);
	if(global.I2C_SystemStatus != HAL_OK)
	{
		I2C_Error_count();
	}

	return global.I2C_SystemStatus;
}