#include <avr32/io.h>
#include <stddef.h>
#include <string.h>
#include "compiler.h"
#include "board.h"
#include "conf_uart.h"
#include "conf_clocks.h"
#include "gpio.h"
#include "intc.h"
#include "usart.h"
#include "power_clocks_lib.h"
#include "flash_api.h"
#include "uart_dfu.h"
#include "boot.h"
#include "conf_isp.h"
#include "isp.h"

Macros
#define	CMD_BLANK_CHECK 0x01

#define	CMD_ERASE 0x00

#define	CMD_ERASE_ARG_CHIP 0xFF

#define	CMD_GRP_DATA 0x00

#define	CMD_GRP_DNLOAD 0x01

#define	CMD_GRP_EXEC 0x04

#define	CMD_GRP_SELECT 0x06

#define	CMD_GRP_UPLOAD 0x03

#define	CMD_PROGRAM_START 0x00

#define	CMD_READ_MEMORY 0x00

#define	CMD_SELECT_MEMORY 0x03

#define	CMD_SELECT_MEMORY_ARG_PAGE 0x01

#define	CMD_SELECT_MEMORY_ARG_UNIT 0x00

#define	CMD_START_APPLI 0x03

#define	CMD_START_APPLI_ARG_NO_RESET 0x01

#define	CMD_START_APPLI_ARG_RESET 0x00

#define	DFU_ANSWER_CHKSUM_ERR 'X'

#define	DFU_ANSWER_END_CHAR1 '\r'

#define	DFU_ANSWER_END_CHAR2 '\n'

#define	DFU_ANSWER_EQUAL '='

#define	DFU_ANSWER_OK '.'

#define	DFU_ANSWER_RW_ERROR_SECURITY_SET 'L'

#define	DFU_ANSWER_UNKNOWN 'K'
	Answer codes. More...

#define	DFU_ANSWER_WRITE_ERROR 'P'

#define	DFU_CMD_STATUS_errADDRESS 0x8

#define	DFU_CMD_STATUS_errBLANKCHECK 0x80

#define	DFU_CMD_STATUS_errCHECKSUM 0x20

#define	DFU_CMD_STATUS_errSECURITY_SET 0x2

#define	DFU_CMD_STATUS_errUNEXPECTED 0x40

#define	DFU_CMD_STATUS_errUNKNOWN 0x4

#define	DFU_CMD_STATUS_errWRITE 0x10

#define	DFU_CMD_STATUS_OK 0x1

#define	DFU_CMD_STATUS_OK_NORETCHAR 0x0

#define	DFU_PACKET_START_CHAR ':'

#define	DFU_STATE_IDLE 0

#define	DFU_STATE_PROGRAM 1

#define	DFU_SYNCHRO_CHAR 'U'

#define	INTELHEX_MAX_DATA_LENGTH 0xFFu

#define	ISP_ID0_ADDRESS 0x01

#define	ISP_ID1_ADDRESS 0x02

#define	ISP_INF_ITEM_COUNT (ISP_ID1_ADDRESS + 1)

#define	ISP_VERSION_ADDRESS 0x00

#define	MEM_BOOTLOADER 0x04

#define	MEM_CONFIGURATION 0x03

#define	MEM_COUNT (MEM_INTRAM + 1)

#define	MEM_EEPROM 0x01

#define	MEM_FLASH 0x00

#define	MEM_INTRAM 0x07

#define	MEM_SECURITY 0x02

#define	MEM_SIGNATURE 0x05

#define	MEM_USER 0x06

#define	POLYNOMIAL (ISP_CFG1_CRC8_POLYNOMIAL << 7)
	Calculates the CRC-8-CCITT. More...

#define	PRODUCT_INF_ITEM_COUNT (PRODUCT_REVISION_ADDRESS + 1)

#define	PRODUCT_MANUFACTURER_ID_ADDRESS 0x00

#define	PRODUCT_PART_NUMBER_LSB_ADDRESS 0x02

#define	PRODUCT_PART_NUMBER_MSB_ADDRESS 0x01

#define	PRODUCT_REVISION_ADDRESS 0x03

#define	UART_RX_BUFFER_SIZE 32

Functions
void	_unhandled_interrupt (void)
	Default interrupt handler. More...

static U8	conv_ascii_to_hex (U8 *ascii)
	convert an ascii 2-byte data into a 1-byte hexdecimal value. More...

static U8	Crc8 (U8 inCrc, U8 inData)

static void	dump_dfu_packet (U8 data_nb_Bytes_left)

static void	dump_dfu_packet_and_reset_dfu_state (U8 data_nb_Bytes_left)

static void	erase_check_mem (void)
	Read n Bytes from the currently chosen memory and verify that each. More...

static void	force_isp (bool force)

static U8	get_and_check_mem_range_and_crc (req_header_t req_header, U8 checksum)
	Read and check the start address and the end address. Validate the checksum. More...

static bool	is_isp_forced (void)

static void	mem_bootloader_read (void *dst, U32 src, size_t nbytes)
	Read the bootloader memory (i.e. the ISP version info) More...

static void	mem_configuration_read (void *dst, U32 src, size_t nbytes)
	Read nbytes GP fuse bit, copy each bit to a Byte. More...

static int	mem_configuration_write (U32 dst, const void *src, size_t nbytes)
	Write nbytes GP fuse bit (one Byte per bit) More...

static void	mem_flash_read (void *dst, U32 src, size_t nbytes)
	Read n Bytes from the internal Flash memory at address src and copy at address dst. More...

static int	mem_flash_write (U32 dst, const void *src, size_t nbytes)
	Write n Bytes from src to the internal Flash memory address dst. More...

static void	mem_intram_read (void *dst, U32 src, size_t nbytes)
	Read n Bytes from the internal page address src and copy to the address dst. More...

static void	mem_security_read (void *dst, U32 src, size_t nbytes)
	Write the value 1 to *dst if the security bit is set, else write 0. More...

static int	mem_security_write (U32 dst, const void *src, size_t nbytes)
	Set the security bit. More...

static void	mem_signature_read (void *dst, U32 src, size_t nbytes)
	Read the signature memory (i.e. the UC3 device info) More...

static void	mem_user_read (void *dst, U32 src, size_t nbytes)
	Read n Bytes from the user page address src and copy to the address dst. More...

static int	mem_user_write (U32 dst, const void *src, size_t nbytes)
	Write n Bytes from src to the user page address dst. More...

static void	parse_dfu_intel_hex_header (req_header_t req_header, U8 intel_hex_req_header, U8 *checksum)
	Parse a DFU Intel hex string and store info into a structure. This parser parses only the first 9 bytes of this structure (including the ':' character). More...

void	process_cmd_grp_data (req_header_t req_header, U8 checksum)
	Process commands under the CMD_GRP_DATA type. More...

void	process_cmd_grp_dnload (req_header_t req_header, U8 checksum)
	Process commands under the CMD_GRP_DOWNLOAD type. More...

void	process_cmd_grp_exec (req_header_t req_header, U8 checksum)
	Process commands under the CMD_GRP_EXEC type. More...

void	process_cmd_grp_select (req_header_t req_header, U8 checksum)
	Process commands under the CMD_GRP_SELECT type. More...

void	process_cmd_grp_upload (req_header_t req_header, U8 checksum)
	Process commands under the CMD_GRP_UPLOAD type. More...

static void	read_mem (void)
	Read address_range_nb_bytes Bytes from the currently selected memory. More...

static void	send_answer_frame (void)
	Build and send the answer frame. More...

static void	stop_dfu_and_reset (int forceisp)

static int	uart_autobaud_process (void)
	Perform the UART autobaud process by using the synchronizer character sent by the external programmer. More...

static void	uart_configure (void)
	function used to configure the 4 potential USART candidates with the current PBA frequency. More...

static void	uart_convert16bit2ascii_write (U16 u16_val)
	Convert and write on the USART a 2-byte value into a 4 characters ascii string. More...

static void	uart_convertbyte2ascii_write (U8 *pdfu_buffer, int nb_bytes)
	Convert each Byte of a input buffer into a hexadecimal 2-ascii-character string and write each digit to the UART. More...

static void	uart_dfu_read_char (U8 *data)
	UART DFU read function (read + echo) More...

void	uart_dfu_start (void)
	Configure the USART, initialize the DFU and setup/calculate the autobaud. More...

static void	uart_dfu_stop (int forceisp)

void	uart_execute_dfu_command (req_header_t req_header, U8 checksum)
	Execute the DFU command required by the external programmer tool. More...

U8	uart_get_dfu_command (req_header_t *req_header)
	Get the DFU command from the external programmer tool. More...

static U16	uart_read_16bits (U8 *checksum)

static U8	uart_read_Byte (U8 *checksum)

static U8	validate_checksum (U8 *checksum)
	Validate the checksum with the one read on the USART. More...

static void	vUSART_ISR (void)

static void	vUSART_ISR_init (void)

static void	write_mem (req_header_t req_header, U8 checksum)
	Receive the data from one intel-Hex frame and program the data to the. More...

Variables
static U32	address_range_nb_bytes

static U16	current_page = 0

static U8	dfu_buffer [DFU_BUFFER_LENGTH]

static U32	dfu_buffer_nb_Bytes

static U8	dfu_state = DFU_STATE_IDLE

static U8	dfu_status = DFU_CMD_STATUS_OK

static volatile avr32_usart_t *	DFU_USART

static volatile avr32_usart_t *	DFU_USART_CANDIDATES []

static int	DFU_USART_IRQS []

static address_t	end_address

static int	flag_checksum_read

static const U8	ISP_INF [ISP_INF_ITEM_COUNT]

static U8	memory = MEM_FLASH

struct {
void(* read )(void *dst, U32 src, size_t nbytes)

int(* write )(U32 dst, const void *src, size_t nbytes)

}	MEMORY_ACCESS [MEM_COUNT]

static address_t	MEMORY_END_ADDRESS [MEM_COUNT]

static const U8	MEMORY_ERASE_VALUE [MEM_COUNT]

static U8	PRODUCT_INF [PRODUCT_INF_ITEM_COUNT]

static U8 *	ptr_dfu_buffer

static volatile U8	rx_buffer [UART_RX_BUFFER_SIZE]

static volatile U32	rx_read_idx

static volatile U32	rx_write_idx

static bool	security_active = true

static address_t	start_address

static const gpio_map_t	USART_RX_GPIO_MAP

static const gpio_map_t	USART_TX_GPIO_MAP

#define CMD_BLANK_CHECK 0x01

Referenced by process_cmd_grp_upload().

#define CMD_ERASE 0x00

Referenced by process_cmd_grp_exec().

#define CMD_ERASE_ARG_CHIP 0xFF

Referenced by process_cmd_grp_exec().

#define CMD_GRP_DATA 0x00

Referenced by uart_execute_dfu_command().

#define CMD_GRP_DNLOAD 0x01

Referenced by uart_execute_dfu_command().

#define CMD_GRP_EXEC 0x04

Referenced by uart_execute_dfu_command().

#define CMD_GRP_SELECT 0x06

Referenced by uart_execute_dfu_command().

#define CMD_GRP_UPLOAD 0x03

Referenced by uart_execute_dfu_command().

#define CMD_PROGRAM_START 0x00

Referenced by process_cmd_grp_dnload().

#define CMD_READ_MEMORY 0x00

Referenced by process_cmd_grp_upload().

#define CMD_SELECT_MEMORY 0x03

Referenced by process_cmd_grp_select().

#define CMD_SELECT_MEMORY_ARG_PAGE 0x01

Referenced by process_cmd_grp_select().

#define CMD_SELECT_MEMORY_ARG_UNIT 0x00

Referenced by process_cmd_grp_select().

#define CMD_START_APPLI 0x03

Referenced by process_cmd_grp_exec().

#define CMD_START_APPLI_ARG_NO_RESET 0x01

Referenced by process_cmd_grp_exec().

#define CMD_START_APPLI_ARG_RESET 0x00

Referenced by process_cmd_grp_exec().

#define DFU_ANSWER_CHKSUM_ERR 'X'

Referenced by send_answer_frame().

#define DFU_ANSWER_END_CHAR1 '\r'

Referenced by read_mem(), and send_answer_frame().

#define DFU_ANSWER_END_CHAR2 '\n'

Referenced by read_mem(), and send_answer_frame().

#define DFU_ANSWER_EQUAL '='

Referenced by read_mem().

#define DFU_ANSWER_OK '.'

Referenced by send_answer_frame().

#define DFU_ANSWER_RW_ERROR_SECURITY_SET 'L'

Referenced by send_answer_frame().

#define DFU_ANSWER_UNKNOWN 'K'

Answer codes.

Referenced by send_answer_frame().

#define DFU_ANSWER_WRITE_ERROR 'P'

Referenced by send_answer_frame().

#define DFU_CMD_STATUS_errADDRESS 0x8

Referenced by get_and_check_mem_range_and_crc(), process_cmd_grp_dnload(), process_cmd_grp_upload(), and send_answer_frame().

#define DFU_CMD_STATUS_errBLANKCHECK 0x80

Referenced by erase_check_mem(), and send_answer_frame().

#define DFU_CMD_STATUS_errCHECKSUM 0x20

Referenced by process_cmd_grp_dnload(), process_cmd_grp_exec(), process_cmd_grp_select(), process_cmd_grp_upload(), send_answer_frame(), and write_mem().

#define DFU_CMD_STATUS_errSECURITY_SET 0x2

Referenced by process_cmd_grp_dnload(), process_cmd_grp_upload(), and send_answer_frame().

#define DFU_CMD_STATUS_errUNEXPECTED 0x40

Referenced by process_cmd_grp_data(), process_cmd_grp_dnload(), and send_answer_frame().

#define DFU_CMD_STATUS_errUNKNOWN 0x4

Referenced by process_cmd_grp_dnload(), process_cmd_grp_exec(), process_cmd_grp_select(), process_cmd_grp_upload(), send_answer_frame(), and uart_execute_dfu_command().

#define DFU_CMD_STATUS_errWRITE 0x10

Referenced by process_cmd_grp_dnload(), send_answer_frame(), and write_mem().

#define DFU_CMD_STATUS_OK 0x1

Referenced by process_cmd_grp_dnload(), process_cmd_grp_upload(), send_answer_frame(), and uart_execute_dfu_command().

#define DFU_CMD_STATUS_OK_NORETCHAR 0x0

Referenced by process_cmd_grp_upload().

#define DFU_PACKET_START_CHAR ':'

Referenced by uart_get_dfu_command().

#define DFU_STATE_IDLE 0

Referenced by dump_dfu_packet_and_reset_dfu_state(), and process_cmd_grp_dnload().

#define DFU_STATE_PROGRAM 1

Referenced by process_cmd_grp_data(), and process_cmd_grp_dnload().

#define DFU_SYNCHRO_CHAR 'U'

Referenced by uart_autobaud_process(), and vUSART_ISR_init().

#define INTELHEX_MAX_DATA_LENGTH 0xFFu

Referenced by write_mem().

#define ISP_ID0_ADDRESS 0x01

#define ISP_ID1_ADDRESS 0x02

#define ISP_INF_ITEM_COUNT (ISP_ID1_ADDRESS + 1)

#define ISP_VERSION_ADDRESS 0x00

#define MEM_BOOTLOADER 0x04

Referenced by process_cmd_grp_select().

#define MEM_CONFIGURATION 0x03

Referenced by process_cmd_grp_select().

#define MEM_COUNT (MEM_INTRAM + 1)

#define MEM_EEPROM 0x01

Referenced by process_cmd_grp_select(), and process_cmd_grp_upload().

#define MEM_FLASH 0x00

Referenced by process_cmd_grp_exec(), process_cmd_grp_select(), process_cmd_grp_upload(), and uart_dfu_start().

#define MEM_INTRAM 0x07

Referenced by process_cmd_grp_select(), and process_cmd_grp_upload().

#define MEM_SECURITY 0x02

Referenced by process_cmd_grp_select().

#define MEM_SIGNATURE 0x05

Referenced by process_cmd_grp_select().

#define MEM_USER 0x06

Referenced by process_cmd_grp_select(), and process_cmd_grp_upload().

#define POLYNOMIAL (ISP_CFG1_CRC8_POLYNOMIAL << 7)

Calculates the CRC-8-CCITT.

CRC-8-CCITT is defined to be x^8 + x^2 + x + 1

To use this function use the following template:

crc = Crc8( crc, data );

Referenced by Crc8().

#define PRODUCT_INF_ITEM_COUNT (PRODUCT_REVISION_ADDRESS + 1)

#define PRODUCT_MANUFACTURER_ID_ADDRESS 0x00

Referenced by uart_dfu_start().

#define PRODUCT_PART_NUMBER_LSB_ADDRESS 0x02

Referenced by uart_dfu_start().

#define PRODUCT_PART_NUMBER_MSB_ADDRESS 0x01

Referenced by uart_dfu_start().

#define PRODUCT_REVISION_ADDRESS 0x03

Referenced by uart_dfu_start().

#define UART_RX_BUFFER_SIZE 32

Referenced by uart_dfu_read_char(), vUSART_ISR(), and vUSART_ISR_init().

void _unhandled_interrupt ( void )

Default interrupt handler.

Note: Taken and adapted from Newlib.

Referenced by uart_dfu_stop(), and vUSART_ISR_init().

static U8 conv_ascii_to_hex ( U8 * ascii )

static

convert an ascii 2-byte data into a 1-byte hexdecimal value.

Parameters

ascii a pointer on the 2-byte data to convert.

Returns: It returns the value of the ascii data in hexacimal.

Referenced by parse_dfu_intel_hex_header(), and uart_read_Byte().

static U8 Crc8	(	U8	inCrc,
		U8	inData
	)

static

References POLYNOMIAL.

Referenced by force_isp().

static void dump_dfu_packet ( U8 data_nb_Bytes_left )

static

References send_answer_frame(), and uart_read_Byte().

Referenced by dump_dfu_packet_and_reset_dfu_state(), process_cmd_grp_dnload(), and write_mem().

static void dump_dfu_packet_and_reset_dfu_state ( U8 data_nb_Bytes_left )

static

References DFU_STATE_IDLE, and dump_dfu_packet().

Referenced by process_cmd_grp_data(), process_cmd_grp_dnload(), process_cmd_grp_exec(), process_cmd_grp_select(), process_cmd_grp_upload(), uart_execute_dfu_command(), and write_mem().

static void erase_check_mem ( void )

static

Read n Bytes from the currently chosen memory and verify that each.

References dfu_buffer, DFU_BUFFER_LENGTH_READ, DFU_CMD_STATUS_errBLANKCHECK, address_t::long_address, memory, MEMORY_ACCESS, and min.

Referenced by process_cmd_grp_upload().

static void force_isp ( bool force )

static

References Crc8(), ISP_CFG1, ISP_CFG1_CRC8_MASK, ISP_CFG1_CRC8_OFFSET, ISP_CFG1_FORCE_MASK, ISP_CFG1_FORCE_OFFSET, ISP_CFG1_OFFSET, and mem_user_write().

Referenced by uart_dfu_stop(), and uart_execute_dfu_command().

static U8 get_and_check_mem_range_and_crc	(	req_header_t *	req_header,
		U8 *	checksum
	)

static

Read and check the start address and the end address. Validate the checksum.

Parameters

req_header	pointer on a structure containing the frame header information
checksum	A pointer on a 8-bit value that contains the actual checksum.

Returns: 0 if the start and end addresses are correct and if the checksum is OK. Additionally if the start address and/or end address are/is wrong, the dfu_status global variable is set to DFU_CMD_STATUS_errADDRESS.

References current_page, DFU_CMD_STATUS_errADDRESS, FAIL, req_header_t::length, address_t::long_address, address_t::page, address_t::page_offset, uart_read_16bits(), and validate_checksum().

Referenced by process_cmd_grp_dnload(), and process_cmd_grp_upload().

static bool is_isp_forced ( void )

static

References ISP_CFG1, ISP_CFG1_FORCE_MASK, and ISP_CFG1_FORCE_OFFSET.

Referenced by uart_execute_dfu_command().

static void mem_bootloader_read	(	void *	dst,
		U32	src,
		size_t	nbytes
	)

static

Read the bootloader memory (i.e. the ISP version info)

static void mem_configuration_read	(	void *	dst,
		U32	src,
		size_t	nbytes
	)

static

Read nbytes GP fuse bit, copy each bit to a Byte.

static int mem_configuration_write	(	U32	dst,
		const void *	src,
		size_t	nbytes
	)

static

Write nbytes GP fuse bit (one Byte per bit)

References FAIL, and PASS.

static void mem_flash_read	(	void *	dst,
		U32	src,
		size_t	nbytes
	)

static

Read n Bytes from the internal Flash memory at address src and copy at address dst.

static int mem_flash_write	(	U32	dst,
		const void *	src,
		size_t	nbytes
	)

static

Write n Bytes from src to the internal Flash memory address dst.

References FAIL, and PASS.

static void mem_intram_read	(	void *	dst,
		U32	src,
		size_t	nbytes
	)

static

Read n Bytes from the internal page address src and copy to the address dst.

static void mem_security_read	(	void *	dst,
		U32	src,
		size_t	nbytes
	)

static

Write the value 1 to *dst if the security bit is set, else write 0.

static int mem_security_write	(	U32	dst,
		const void *	src,
		size_t	nbytes
	)

static

Set the security bit.

References FAIL, and PASS.

static void mem_signature_read	(	void *	dst,
		U32	src,
		size_t	nbytes
	)

static

Read the signature memory (i.e. the UC3 device info)

static void mem_user_read	(	void *	dst,
		U32	src,
		size_t	nbytes
	)

static

Read n Bytes from the user page address src and copy to the address dst.

static int mem_user_write	(	U32	dst,
		const void *	src,
		size_t	nbytes
	)

static

Write n Bytes from src to the user page address dst.

References FAIL, and PASS.

Referenced by force_isp().

static void parse_dfu_intel_hex_header	(	req_header_t *	req_header,
		U8 *	intel_hex_req_header,
		U8 *	checksum
	)

static

Parse a DFU Intel hex string and store info into a structure. This parser parses only the first 9 bytes of this structure (including the ':' character).

Parameters

req_header	The structure where the formatted info will be stored.
intel_hex_req_header	The raw Intel Hex header frame (a pointer on the first 9 bytes).
checksum	A pointer on a 8-bit value used to contain the checksum of the header frame.

References req_header_t::address, conv_ascii_to_hex(), current_page, req_header_t::length, address_t::page, address_t::page_offset, and req_header_t::type.

Referenced by uart_get_dfu_command().

void process_cmd_grp_data	(	req_header_t *	req_header,
		U8 *	checksum
	)

Process commands under the CMD_GRP_DATA type.

References DFU_CMD_STATUS_errUNEXPECTED, DFU_STATE_PROGRAM, dump_dfu_packet_and_reset_dfu_state(), req_header_t::length, and write_mem().

Referenced by uart_execute_dfu_command().

void process_cmd_grp_dnload	(	req_header_t *	req_header,
		U8 *	checksum
	)

Process commands under the CMD_GRP_DOWNLOAD type.

References CMD_PROGRAM_START, DFU_CMD_STATUS_errADDRESS, DFU_CMD_STATUS_errCHECKSUM, DFU_CMD_STATUS_errSECURITY_SET, DFU_CMD_STATUS_errUNEXPECTED, DFU_CMD_STATUS_errUNKNOWN, DFU_CMD_STATUS_errWRITE, DFU_CMD_STATUS_OK, DFU_STATE_IDLE, DFU_STATE_PROGRAM, dump_dfu_packet(), dump_dfu_packet_and_reset_dfu_state(), get_and_check_mem_range_and_crc(), req_header_t::length, MEMORY_ACCESS, uart_read_Byte(), and write.

Referenced by uart_execute_dfu_command().

void process_cmd_grp_exec	(	req_header_t *	req_header,
		U8 *	checksum
	)

Process commands under the CMD_GRP_EXEC type.

References boot_program(), CMD_ERASE, CMD_ERASE_ARG_CHIP, CMD_START_APPLI, CMD_START_APPLI_ARG_NO_RESET, CMD_START_APPLI_ARG_RESET, DFU_CMD_STATUS_errCHECKSUM, DFU_CMD_STATUS_errUNKNOWN, dump_dfu_packet_and_reset_dfu_state(), req_header_t::length, address_t::long_address, MEM_FLASH, stop_dfu_and_reset(), sys_clk_gen_stop(), uart_dfu_stop(), uart_read_Byte(), validate_checksum(), and wait_10_ms().

Referenced by uart_execute_dfu_command().

void process_cmd_grp_select	(	req_header_t *	req_header,
		U8 *	checksum
	)

Process commands under the CMD_GRP_SELECT type.

References CMD_SELECT_MEMORY, CMD_SELECT_MEMORY_ARG_PAGE, CMD_SELECT_MEMORY_ARG_UNIT, DFU_CMD_STATUS_errCHECKSUM, DFU_CMD_STATUS_errUNKNOWN, dump_dfu_packet_and_reset_dfu_state(), req_header_t::length, address_t::long_address, MEM_BOOTLOADER, MEM_CONFIGURATION, MEM_EEPROM, MEM_FLASH, MEM_INTRAM, MEM_SECURITY, MEM_SIGNATURE, MEM_USER, address_t::page, STATUS_errADDRESS, uart_read_16bits(), uart_read_Byte(), and validate_checksum().

Referenced by uart_execute_dfu_command().

void process_cmd_grp_upload	(	req_header_t *	req_header,
		U8 *	checksum
	)

Process commands under the CMD_GRP_UPLOAD type.

References CMD_BLANK_CHECK, CMD_READ_MEMORY, DFU_CMD_STATUS_errADDRESS, DFU_CMD_STATUS_errCHECKSUM, DFU_CMD_STATUS_errSECURITY_SET, DFU_CMD_STATUS_errUNKNOWN, DFU_CMD_STATUS_OK, DFU_CMD_STATUS_OK_NORETCHAR, dump_dfu_packet_and_reset_dfu_state(), erase_check_mem(), get_and_check_mem_range_and_crc(), req_header_t::length, MEM_EEPROM, MEM_FLASH, MEM_INTRAM, MEM_USER, MEMORY_ACCESS, read, read_mem(), and uart_read_Byte().

Referenced by uart_execute_dfu_command().

static void read_mem ( void )

static

Read address_range_nb_bytes Bytes from the currently selected memory.

References DFU_ANSWER_END_CHAR1, DFU_ANSWER_END_CHAR2, DFU_ANSWER_EQUAL, DFU_BUFFER_LENGTH_READ, address_t::long_address, memory, MEMORY_ACCESS, min, address_t::page_offset, uart_convert16bit2ascii_write(), uart_convertbyte2ascii_write(), and usart_bw_write_char().

Referenced by process_cmd_grp_upload().

static void send_answer_frame ( void )

static

Build and send the answer frame.

References DFU_ANSWER_CHKSUM_ERR, DFU_ANSWER_END_CHAR1, DFU_ANSWER_END_CHAR2, DFU_ANSWER_OK, DFU_ANSWER_RW_ERROR_SECURITY_SET, DFU_ANSWER_UNKNOWN, DFU_ANSWER_WRITE_ERROR, DFU_CMD_STATUS_errADDRESS, DFU_CMD_STATUS_errBLANKCHECK, DFU_CMD_STATUS_errCHECKSUM, DFU_CMD_STATUS_errSECURITY_SET, DFU_CMD_STATUS_errUNEXPECTED, DFU_CMD_STATUS_errUNKNOWN, DFU_CMD_STATUS_errWRITE, DFU_CMD_STATUS_OK, address_t::page_offset, uart_convert16bit2ascii_write(), and usart_bw_write_char().

Referenced by dump_dfu_packet().

static void stop_dfu_and_reset ( int forceisp )

static

References Disable_global_interrupt, and uart_dfu_stop().

Referenced by process_cmd_grp_exec(), and uart_dfu_start().

static int uart_autobaud_process ( void )

static

Perform the UART autobaud process by using the synchronizer character sent by the external programmer.

References DFU_SYNCHRO_CHAR, FAIL, PASS, SLEEP, and usart_bw_write_char().

Referenced by uart_dfu_start().

static void uart_configure ( void )

static

function used to configure the 4 potential USART candidates with the current PBA frequency.

References AVR32_ENTER_CRITICAL_REGION, AVR32_LEAVE_CRITICAL_REGION, usart_options_t::baudrate, DFU_UART_BAUD_RATE, DFU_USART_CANDIDATES, Enable_global_interrupt, gpio_enable_module(), INTC_register_interrupt(), TARGET_PBA_FREQ_HZ, USART_1_STOPBIT, usart_init_rs232(), USART_NO_PARITY, USART_NORMAL_CHMODE, and vUSART_ISR_init().

Referenced by uart_dfu_start().

static void uart_convert16bit2ascii_write ( U16 u16_val )

static

Convert and write on the USART a 2-byte value into a 4 characters ascii string.

Parameters

u16_val the 2-byte value to process.

References usart_bw_write_char().

Referenced by read_mem(), and send_answer_frame().

static void uart_convertbyte2ascii_write	(	U8 *	pdfu_buffer,
		int	nb_bytes
	)

static

Convert each Byte of a input buffer into a hexadecimal 2-ascii-character string and write each digit to the UART.

Parameters

pdfu_buffer	buffer of Bytes
nb_bytes	number of Bytes in dfu_buffer[]

References usart_bw_write_char().

Referenced by read_mem().

static void uart_dfu_read_char ( U8 * data )

inlinestatic

UART DFU read function (read + echo)

Parameters

data	a pointer on an unsigned 8-bit data which will contain the data read.

References SLEEP, UART_RX_BUFFER_SIZE, and usart_bw_write_char().

Referenced by uart_get_dfu_command(), and uart_read_Byte().

void uart_dfu_start ( void )

Configure the USART, initialize the DFU and setup/calculate the autobaud.

References Get_debug_register, address_t::long_address, MEM_FLASH, PRODUCT_MANUFACTURER_ID_ADDRESS, PRODUCT_PART_NUMBER_LSB_ADDRESS, PRODUCT_PART_NUMBER_MSB_ADDRESS, PRODUCT_REVISION_ADDRESS, Rd_bitfield, stop_dfu_and_reset(), uart_autobaud_process(), and uart_configure().

Referenced by main().

static void uart_dfu_stop ( int forceisp )

static

References _unhandled_interrupt(), DFU_USART_CANDIDATES, Disable_global_interrupt, force_isp(), gpio_enable_gpio(), INTC_register_interrupt(), and usart_reset().

Referenced by process_cmd_grp_exec(), and stop_dfu_and_reset().

void uart_execute_dfu_command	(	req_header_t *	req_header,
		U8 *	checksum
	)

Execute the DFU command required by the external programmer tool.

References CMD_GRP_DATA, CMD_GRP_DNLOAD, CMD_GRP_EXEC, CMD_GRP_SELECT, CMD_GRP_UPLOAD, DFU_CMD_STATUS_errUNKNOWN, DFU_CMD_STATUS_OK, dump_dfu_packet_and_reset_dfu_state(), force_isp(), is_isp_forced(), req_header_t::length, process_cmd_grp_data(), process_cmd_grp_dnload(), process_cmd_grp_exec(), process_cmd_grp_select(), process_cmd_grp_upload(), and req_header_t::type.

Referenced by main().

U8 uart_get_dfu_command ( req_header_t * req_header )

Get the DFU command from the external programmer tool.

References DFU_PACKET_START_CHAR, parse_dfu_intel_hex_header(), and uart_dfu_read_char().

Referenced by main().

static U16 uart_read_16bits ( U8 * checksum )

static

References uart_read_Byte().

Referenced by get_and_check_mem_range_and_crc(), and process_cmd_grp_select().

static U8 uart_read_Byte ( U8 * checksum )

static

References conv_ascii_to_hex(), and uart_dfu_read_char().

Referenced by dump_dfu_packet(), process_cmd_grp_dnload(), process_cmd_grp_exec(), process_cmd_grp_select(), process_cmd_grp_upload(), uart_read_16bits(), validate_checksum(), and write_mem().

static U8 validate_checksum ( U8 * checksum )

static

Validate the checksum with the one read on the USART.

Parameters

checksum A pointer on a 8-bit value that contains the actual checksum.

Returns: 0 if the checksum is OK

References uart_read_Byte().

Referenced by get_and_check_mem_range_and_crc(), process_cmd_grp_exec(), process_cmd_grp_select(), and write_mem().

static void vUSART_ISR ( void )

static

References gpio_clr_gpio_pin(), and UART_RX_BUFFER_SIZE.

Referenced by vUSART_ISR_init().

static void vUSART_ISR_init ( void )

static

References _unhandled_interrupt(), AVR32_INTC_NUM_INT_LEVELS, DFU_SYNCHRO_CHAR, DFU_USART_CANDIDATES, DFU_USART_IRQS, gpio_enable_gpio_pin(), gpio_enable_module_pin(), INTC_register_interrupt(), UART_RX_BUFFER_SIZE, usart_reset(), and vUSART_ISR().

Referenced by uart_configure().

static void write_mem	(	req_header_t *	req_header,
		U8 *	checksum
	)

static

Receive the data from one intel-Hex frame and program the data to the.

References DFU_BUFFER_LENGTH, dfu_buffer_nb_Bytes, DFU_CMD_STATUS_errCHECKSUM, DFU_CMD_STATUS_errWRITE, dump_dfu_packet(), dump_dfu_packet_and_reset_dfu_state(), FAIL, INTELHEX_MAX_DATA_LENGTH, req_header_t::length, address_t::long_address, MEMORY_ACCESS, uart_read_Byte(), validate_checksum(), and write.

Referenced by process_cmd_grp_data().

U32 address_range_nb_bytes

static

U16 current_page = 0

static

Referenced by get_and_check_mem_range_and_crc(), and parse_dfu_intel_hex_header().

U8 dfu_buffer[DFU_BUFFER_LENGTH]

static

Referenced by erase_check_mem().

U32 dfu_buffer_nb_Bytes

static

Referenced by write_mem().

U8 dfu_state = DFU_STATE_IDLE

static

U8 dfu_status = DFU_CMD_STATUS_OK

static

volatile avr32_usart_t* DFU_USART

static

volatile avr32_usart_t* DFU_USART_CANDIDATES[]

static

Initial value:

=
{
  DFU_USART_CANDIDATE0,
  DFU_USART_CANDIDATE1,
  DFU_USART_CANDIDATE2,
  DFU_USART_CANDIDATE3
}

Referenced by uart_configure(), uart_dfu_stop(), and vUSART_ISR_init().

int DFU_USART_IRQS[]

static

Initial value:

=
{
  DFU_USART_CANDIDATE0_IRQ,
  DFU_USART_CANDIDATE1_IRQ,
  DFU_USART_CANDIDATE2_IRQ,
  DFU_USART_CANDIDATE3_IRQ
}

Referenced by vUSART_ISR_init().

address_t end_address

static

int flag_checksum_read

static

const U8 ISP_INF[ISP_INF_ITEM_COUNT]

static

Initial value:

=
{
  ISP_VERSION,
  ISP_ID0,
  ISP_ID1
}

U8 memory = MEM_FLASH

static

Referenced by erase_check_mem(), and read_mem().

struct { ... } MEMORY_ACCESS[MEM_COUNT]

Referenced by erase_check_mem(), process_cmd_grp_dnload(), process_cmd_grp_upload(), read_mem(), and write_mem().

address_t MEMORY_END_ADDRESS[MEM_COUNT]

static

Initial value:

=
{
  
  {FLASH_API_FLASH_SIZE - 1},  
  
  {0},
  
  {0},
  
  {AVR32_FLASHC_GPF_NUM - 1},
  
  {sizeof(ISP_INF) - 1},
  
  {sizeof(PRODUCT_INF) - 1},
  
  {FLASH_API_USER_PAGE_SIZE - 1},
  
  {AVR32_SRAM_SIZE - 1}
}

const U8 MEMORY_ERASE_VALUE[MEM_COUNT]

static

Initial value:

=
{
  
  0xFF,
  
  0xFF,
  
  0x00,
  
  0x01, 
  
  0x00,
  
  0x00,
  
  0xFF,
  
  0x00
}

U8 PRODUCT_INF[PRODUCT_INF_ITEM_COUNT]

static

U8* ptr_dfu_buffer

static

void(* read)(void *dst, U32 src, size_t nbytes)

Referenced by process_cmd_grp_upload().

volatile U8 rx_buffer[UART_RX_BUFFER_SIZE]

static

volatile U32 rx_read_idx

static

volatile U32 rx_write_idx

static

bool security_active = true

static

address_t start_address

static

const gpio_map_t USART_RX_GPIO_MAP

static

Initial value:

=
{
  {DFU_USART_CANDIDATE0_RX_PIN, DFU_USART_CANDIDATE0_RX_FUNCTION},
  {DFU_USART_CANDIDATE1_RX_PIN, DFU_USART_CANDIDATE1_RX_FUNCTION},
  {DFU_USART_CANDIDATE2_RX_PIN, DFU_USART_CANDIDATE2_RX_FUNCTION},
  {DFU_USART_CANDIDATE3_RX_PIN, DFU_USART_CANDIDATE3_RX_FUNCTION},
}

const gpio_map_t USART_TX_GPIO_MAP

static

Initial value:

=
{
  {DFU_USART_CANDIDATE0_TX_PIN, DFU_USART_CANDIDATE0_TX_FUNCTION},
  {DFU_USART_CANDIDATE1_TX_PIN, DFU_USART_CANDIDATE1_TX_FUNCTION},
  {DFU_USART_CANDIDATE2_TX_PIN, DFU_USART_CANDIDATE2_TX_FUNCTION},
  {DFU_USART_CANDIDATE3_TX_PIN, DFU_USART_CANDIDATE3_TX_FUNCTION},
}

int(* write)(U32 dst, const void *src, size_t nbytes)

Referenced by process_cmd_grp_dnload(), and write_mem().

Microchip® Advanced Software Framework

Macros

Functions

Variables