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view BootLoader/Src/externCPU2bootloader_mini.c @ 1016:0dd92e9b70a2 BootloaderOstc5

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Bootloader use compressed fonts: The previous Bootloader was larger than 128k => not fitting into the first sectors of the second flash bank. Most memory is occupied by the two fonts in use. In order to make the bootloader small enough for the bootloader update function the fonts need to be compressed. To avoid code changes in visualization functions the compressed fonts are decompressed into RAM and then used in the same way as before.
author Ideenmodellierer
date Wed, 28 May 2025 17:20:44 +0200
parents aeafa631147d
children
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/**
  ******************************************************************************
  * @file    externCPU2bootloader.c Template
  * @author  heinrichs weikamp gmbh
  * @version V0.0.1
  * @date    23-Oct-2014
  * @version V0.0.1
  * @since   23-Oct-2014
  * @brief   Main Template to communicate with the second CPU in bootloader mode
	*						bootloader ROM build by ST and defined in AN4286
  *
  @verbatim
  ==============================================================================
                        ##### How to use #####
  ==============================================================================
  @endverbatim
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2016 heinrichs weikamp</center></h2>
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_hal.h"
#include "stdio.h"
#include "ostc.h"
#include "settings.h"
#include "externCPU2bootloader.h"
#include "externLogbookFlash.h"
#include "tComm.h"


/* Exported variables --------------------------------------------------------*/

/* Private types -------------------------------------------------------------*/

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

/* Private function prototypes -----------------------------------------------*/

static uint8_t boot_sync_frame(void);
static uint8_t boot_ack(void);
static uint8_t boot_get_id(uint8_t *RxBuffer);
static uint8_t boot_get_version(uint8_t *RxBuffer);
static uint8_t boot_write_memory(uint32_t address, uint8_t length_minus_1, uint8_t *data);
static uint8_t boot_erase_memory(void);
static void	Bootloader_send_command(uint8_t command);
static void Bootloader_spi_single(uint8_t TxByte);
static void Bootloader_spi(uint16_t lengthData, uint8_t *aTxBuffer, uint8_t *aRxBuffer);


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

uint8_t extCPU2bootloader_start(uint8_t *version, uint16_t *chipID)
{
	uint8_t aRxBuffer[256] = { 0 };

	HAL_GPIO_WritePin(SMALLCPU_CSB_GPIO_PORT,SMALLCPU_CSB_PIN,GPIO_PIN_RESET);
	
	boot_sync_frame();
	boot_get_version(aRxBuffer);
	*version = aRxBuffer[1];
	HAL_Delay(10);
	boot_get_id(aRxBuffer);
	*chipID = ((uint16_t)aRxBuffer[2]) << 8;
	*chipID += (uint16_t)aRxBuffer[3];
	HAL_Delay(10);
	if((*chipID == 0x431) && (*version > 10) && (*version < 32))
		return 1;
	else
		return 0;
}


uint8_t extCPU2bootloader_internal(uint8_t* buffer, uint32_t length, char* display_text)
{
  uint8_t version = 0;
  uint16_t chipID = 0;

  if(!extCPU2bootloader_start(&version,&chipID))
    return 0;
	if(!boot_erase_memory())
	  return 0;
	HAL_Delay(100);
	uint16_t i=0;
	uint32_t lengthsave = length;
	uint8_t percent = 0;
  
	while(length)
	{
		percent = (100 * (i * 256)) /lengthsave;
		tComm_verlauf(percent);

	  if(length > 256)
	  {
	    if( !boot_write_memory(0x08000000 + (i * 256), 255, &buffer[i * 256]) )
				return 0;;
	    length -= 256;

	  }
	  else
    {
      if(!boot_write_memory(0x08000000 + (i * 256), length - 1, &buffer[i * 256]))
				return 0;
      length = 0;
    }
		i++;
	}
	return 2;
}


uint8_t extCPU2bootloader(uint8_t* buffer, uint32_t length, char* display_text)
{
	uint8_t result = 0;

	MX_SmallCPU_Reset_To_Boot();
	result = extCPU2bootloader_internal(buffer,length,display_text);
	MX_SmallCPU_Reset_To_Standard();
	return result;
}

/* Private functions --------------------------------------------------------*/

static uint8_t boot_sync_frame(void)
{
	Bootloader_spi_single(0x5a);
	return boot_ack();
}

static uint8_t boot_get_version(uint8_t *RxBuffer)
{
	Bootloader_spi_single(0x5a);
	Bootloader_send_command(0x01);
	if(!boot_ack())
		return 0;
	Bootloader_spi(3, NULL, RxBuffer);
	return boot_ack();
}


static uint8_t boot_get_id(uint8_t *RxBuffer)
{
	Bootloader_spi_single(0x5a);
	Bootloader_send_command(0x02);
	if(!boot_ack())
		return 0;
	Bootloader_spi(5, NULL, RxBuffer);
	return boot_ack();
}


uint8_t boot_write_memory(uint32_t address, uint8_t length_minus_1, uint8_t *data)
{
	uint8_t addressNew[4];
	uint8_t checksum = 0;
	uint16_t length;

	Bootloader_spi_single(0x5a);
	Bootloader_send_command(0x31);
	if(!boot_ack())
		return 1;
	HAL_Delay(5);
	addressNew[0] = (uint8_t)((address >> 24) & 0xFF);
	addressNew[1] = (uint8_t)((address >> 16) & 0xFF);
	addressNew[2] = (uint8_t)((address >>  8) & 0xFF);
	addressNew[3] = (uint8_t)((address >>  0) & 0xFF);
	Bootloader_spi(4, addressNew, NULL);
	checksum = 0;
	checksum ^= addressNew[0];
	checksum ^= addressNew[1];
	checksum ^= addressNew[2];
	checksum ^= addressNew[3];
	Bootloader_spi_single(checksum);
	if(!boot_ack())
		return 0;
	HAL_Delay(1);
	Bootloader_spi_single(length_minus_1);
	length = ((uint16_t)length_minus_1) + 1;
	Bootloader_spi(length, data, NULL);
	HAL_Delay(26);
	checksum = 0;
	checksum ^= length_minus_1;
	for(int i=0;i<length;i++)
		checksum ^= data[i];
	Bootloader_spi_single(checksum);
	
	if(!boot_ack())
		return 0;
	HAL_Delay(1);
  return 1;
}

static uint8_t boot_erase_memory(void)
{
	uint8_t special_erase_with_checksum[3] = {0xFF, 0xFF, 0x00};

	Bootloader_spi_single(0x5a);
	Bootloader_send_command(0x44);
	if(!boot_ack())
		return 0;
	Bootloader_spi(3, special_erase_with_checksum, NULL);
	HAL_Delay(11000); /* 5.5 to 11 seconds */
	if(!boot_ack())
		return 0;
  return 1;
}

/* write unprotect does reset the system !! */
uint8_t boot_write_unprotect(void)
{
	Bootloader_spi_single(0x5a);
	Bootloader_send_command(0x73);
	if(!boot_ack())
		return 0;
	return boot_ack();
}

static uint8_t boot_ack(void)
{
	uint8_t answer = 0;

	Bootloader_spi_single(0x00);
	for(int i=0; i< 1000; i++)
	{
		Bootloader_spi(1, NULL, &answer);
		if((answer == 0x79) || (answer == 0x1F))
		{
			Bootloader_spi_single(0x79);
			break;
		}
		HAL_Delay(10);
	}
	if(answer == 0x79)
		return 1;
	else
		return 0;
}

static void	Bootloader_send_command(uint8_t command)
{
	uint8_t send[2];
	uint8_t receive[2];

	send[0] = command;
	send[1] = 0xFF ^ command;
	Bootloader_spi(2, send, receive);
}

static void Bootloader_spi_single(uint8_t TxByte)
{
	Bootloader_spi(1,&TxByte, 0);
}


static void Bootloader_spi(uint16_t lengthData, uint8_t *aTxBuffer, uint8_t *aRxBuffer)
{
	uint8_t dummy[256] = { 0 };
	uint8_t *tx_data;
	uint8_t *rx_data;

	tx_data = aTxBuffer;
	rx_data = aRxBuffer;

	if(aTxBuffer == NULL)
		tx_data = dummy;
	if(aRxBuffer == NULL)
		rx_data = dummy;

	//HAL_GPIO_WritePin(OSCILLOSCOPE_GPIO_PORT,OSCILLOSCOPE_PIN,GPIO_PIN_RESET); // only for testing with Oscilloscope

	
	HAL_SPI_TransmitReceive(&cpu2DmaSpi, (uint8_t *)tx_data, (uint8_t *)rx_data, (uint16_t)lengthData,1000);
/*
	if(HAL_SPI_TransmitReceive_DMA(&cpu2DmaSpi, (uint8_t *)tx_data, (uint8_t *)rx_data, (uint16_t)lengthData) != HAL_OK)
	if(HAL_SPI_TransmitReceive_DMA(&cpu2DmaSpi, (uint8_t *)tx_data, (uint8_t *)rx_data, (uint16_t)lengthData) != HAL_OK)
			Bootloader_Error_Handler();

	while (HAL_SPI_GetState(&cpu2DmaSpi) != HAL_SPI_STATE_READY)// only for testing with Oscilloscope
  {
  }
	HAL_GPIO_WritePin(OSCILLOSCOPE_GPIO_PORT,OSCILLOSCOPE_PIN,GPIO_PIN_SET); // only for testing with Oscilloscope
*/
}


/*
static void Bootloader_Error_Handler(void)
{
	while(1);
}
*/