Mercurial > public > ostc4
view Discovery/Src/externCPU2bootloader.c @ 544:3bb94d361f29
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author | heinrichsweikamp |
---|---|
date | Mon, 02 Nov 2020 12:13:02 +0100 (2020-11-02) |
parents | 5ca177d2df5d |
children | 01f40cb1057e |
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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>© 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); static void Bootloader_Error_Handler(void); /* 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); }