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view OtherSources/data_exchange_main_mini.c @ 420:2174fb133dbe ImprovmentNVM_2

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Optimize ef_write_block function: The function did single byte writing until a start of a page was detected. Only in that case a multi byte write was used. According to the manual page write is not limited to 256 byte. Multiple bytes may be written until the end of the page is reached => Changed implementation to always use multi byte writes which increases the performance of the write block function
author ideenmodellierer
date Mon, 10 Feb 2020 19:15:27 +0100
parents 7801c5d8a562
children
line wrap: on
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/**
  ******************************************************************************
  * @file    data_exchange_main.c
  * @author  heinrichs weikamp gmbh
  * @date    13-Oct-2014
  * @version V0.0.2
  * @since   27-May-2015

	* @brief   Communication with the second CPU == RTE system
  *
  @verbatim
  ==============================================================================
                        ##### How to use #####
  ==============================================================================

  ==============================================================================
                        ##### Device Data #####
  ==============================================================================
	
	main CPU always sends the device data info that it has at the moment

		on start it is INT32_MIN, INT32_MAX and 0 
		as initialized  in data_central.c variable declaration
	
	second small CPU gets request to send its device data
		
		on receiption the data is merged with the data in externLogbookFlash,
		stored on the externLogbookFlash and from now on send to small CPU

	@endverbatim
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2014 heinrichs weikamp</center></h2>
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include <string.h> // for memcopy
#include "stm32f4xx_hal.h"
#include "stdio.h"
#include "ostc.h"
#include "data_central.h"
#include "data_exchange_main.h"
#include "base.h"
#include "externLogbookFlash.h"


/* Expoted variables --------------------------------------------------------*/

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

SDataReceiveFromMaster dataOut;
SDataExchangeSlaveToMaster dataIn;

uint8_t data_old__lost_connection_to_slave_counter_temp = 0;
/* Private types -------------------------------------------------------------*/

uint8_t DataEX_check_header_and_footer_ok(void);
void DataEX_control_connection_while_asking_for_sleep(void);

/* Exported functions --------------------------------------------------------*/

uint8_t DataEX_call(void)
{
	DataEX_control_connection_while_asking_for_sleep();
	
	for(int i=0;i<EXCHANGE_BUFFERSIZE;i++)
		*(uint8_t *)(((uint32_t)&dataOut) + i)  = 0;

	dataOut.mode = MODE_SHUTDOWN;

	dataOut.header.checkCode[0] = 0xBB;
	dataOut.header.checkCode[1] = 0x01;
	dataOut.header.checkCode[2] = 0x01;
	dataOut.header.checkCode[3] = 0xBB;

	dataOut.footer.checkCode[0] = 0xF4;
	dataOut.footer.checkCode[1] = 0xF3;
	dataOut.footer.checkCode[2] = 0xF2;
	dataOut.footer.checkCode[3] = 0xF1;

	HAL_GPIO_WritePin(SMALLCPU_CSB_GPIO_PORT,SMALLCPU_CSB_PIN,GPIO_PIN_SET);
	delayMicros(10);

	if(data_old__lost_connection_to_slave_counter_temp >= 3)
	{
		data_old__lost_connection_to_slave_counter_temp = 0;
	}
	else
	{
		HAL_GPIO_WritePin(SMALLCPU_CSB_GPIO_PORT,SMALLCPU_CSB_PIN,GPIO_PIN_RESET);
	}

	HAL_SPI_TransmitReceive_DMA(&cpu2DmaSpi, (uint8_t *)&dataOut, (uint8_t *)&dataIn, EXCHANGE_BUFFERSIZE+1);
	return 1;
}


void DataEX_control_connection_while_asking_for_sleep(void)
{
 	if(!DataEX_check_header_and_footer_ok())
	{
		data_old__lost_connection_to_slave_counter_temp += 1;
	}
}

uint8_t DataEX_check_header_and_footer_ok(void)
{
	if(dataIn.header.checkCode[0] != 0xA1)
		return 0;
	if(dataIn.header.checkCode[1] != 0xA2)
		return 0;
	if(dataIn.header.checkCode[2] != 0xA3)
		return 0;
	if(dataIn.header.checkCode[3] != 0xA4)
		return 0;
	if(dataIn.footer.checkCode[0] != 0xE1)
		return 0;
	if(dataIn.footer.checkCode[1] != 0xE2)
		return 0;
	if(dataIn.footer.checkCode[2] != 0xE3)
		return 0;
	if(dataIn.footer.checkCode[3] != 0xE4)
		return 0;

	return 1;
}