This is an old revision of the document!


Default memory map

This is a default memory map. The slave devices should implement most of these registers.

Addr hex1) High2) Low3) Cmds4) Save in EE5) Description
0x0000 REG_FWREV GR No PIC_FWREV PIC firmware revision
0x0001 REG_RSREG GSR No Indicates the status of the unit and reason for the last reset, see detailed description.
0x0002 REG_RSCOUNT GR No Indicates number of resets since the unit was powered up.
0x0003 REG_UPTIME GSR No Device uptime since last reboot in seconds
0x0004 REG_STATUS GR No Device status, application speciffic
0x0005 REG_FLOCK GSR No FLASH lock, firmware upgrade register
0x0006 REG_EELOCK GSR No EEPROM lock
0x0007 VPWR1F REG_VPWR1 GR,GB No GR returns supply voltage 1 value as integer in 0.1V, GB returns IEEE float
0x0008 VPWR2F REG_VPWR2 GR,GB No GR returns supply voltage 2 value as integer in 0.1V, GB returns IEEE float
0x0009 VPWR3F REG_VPWR3 GR,GB No GR returns supply voltage 3 value as integer in 0.1V, GB returns IEEE float
0x000A - 0x000F APP GSR No Application speciffic
0x0010 RTC_DATETIME GSB No (RTC) Date and time in second since 00:00:00 UTC on Thursday, 1 January 1970 (ISO C defined)
0x0011 - 0x00FF APP GSR No Application speciffic
0x0100 SERIAL_NUMBER GSB Yes Device serial number, uint32
0x0101 - 0x0105 PARTNUM[0]-[19] GSB Yes 20 bytes, ASCII Alphanumeric device part number, char[20], LSB at byte 0 of 0x0101
0x0106 - 0x010A ANAME[0]-[19] GSB Yes 20 bytes, ASCII Alphanumeric device name/description, char[20]
0x010B REG_COMMAND GSR Yes Command register, see description
0x010C REG_UTILITY GSR Yes Utility register, see description
0x010D - 0x010F Yes Application speciffic
0x0110 REG_MODID GSR Yes Module ID = USP module address
0x0111 REG_RS1_SPEED GSR Yes Communication speed of the first RS232 interface. Value in Bd. Default 38400
0x0112 REG_RS2_SPEED GSR Yes Communication speed of the second RS232 interface. Value in Bd. Default 38400
0x0113 REG_RS3_SPEED GSR Yes Communication speed of the third RS232 interface. Value in Bd. Default 38400
0x0114 REG_RS4_SPEED GSR Yes Communication speed of the fourth RS232 interface. Value in Bd. Default 38400
0x0115 REG_ETH_UTILITY GSR Yes Ethernet utility register, see description
0x0116 IP3,IP2 IP1,IP0 GSB Yes Module embedded Ethernet IP address
0x0117 M3,M2 M1,M0 GSB Yes Module embedded Ethernet Mask
0x0118 G3,G2 G1,G0 GSB Yes Module embedded Ethernet Gateway
0x0119 D3,D2 D1,D0 GSB Yes Module embedded Ethernet primary DNS server IP
0x011A D3,D2 D1,D0 GSB Yes Module embedded Ethernet secondary DNS server IP
0x011B - 0x011D NBTNAME[0]-[11] GSB Yes 12 bytes, ASCII Alphanumeric NETBIOS name, char[12], LSB at byte 0 of 0x011A
0x011E MAC3,MAC2 MAC1,MAC0 GSB Yes Module embedded Ethernet MAC Address
0x011F MAC5,MAC4 GSB Yes Module embedded Ethernet MAC Address

Register Description

REG_RSREG Register

The read of the Reset register return the reason for the last reset. In most Microchip devices it maps directly to RCON register. Write to Reset register causes software reset (RESET instruction) of the MCU. This can be used for example for reset after firmware upgrade etc.

Reset register read

Bit Description
0 POR: 1 = A Power-on Reset has occurred
1 BOR: 1 = A Brown-out Reset has occurred
2 IDLE: 1 = Device was in Idle mode
3 SLEEP 1 = Device has been in Sleep mode
4 WDTO: 1 = WDT time-out has occurred
5 SWDTEN: 1 = WDT is enabled
6 SWR: 1 = A RESET instruction has been executed
7 EXTR: 1 = A Master Clear (pin) Reset has occurred
8 Application specific
9 CM: 1 = A configuration mismatch Reset has occurred.
10 Application specific
11 Application specific
12 Application specific
13 Application specific
14 IOPUWR: 1 = An illegal opcode detection, an illegal address mode or uninitialized W register used as an Address Pointer caused a Reset
15 TRAPR: 1 = A Trap Conflict Reset has occurred

Reset register write

Value Description
0xA3C1 Perform software Reset

REG_UTILITY Register

Bit Description
0 LED On/Off bit 1 = LED on 0 = LED off

REG_ETH_UTILITY Register

Bit Description
0 DHCPEN, 1= DHCP is enabled, 0=DHCP disabled

REG_COMMAND Register

Application speciffic, writing to this register will execute a command.

1)
Register address in hex format
2)
Upper 16bit word
3)
Lower 16 bit word
4)
Implemented commands GR-Get Register, SR-Set Register, GB-Get Block, SB-Set Block
5)
The register value will be saved in PIC EEPROM and restored on power-up
usp/default_map.1355778871.txt.gz · Last modified: 2015/04/16 16:04 (external edit)
CC Attribution-Noncommercial-Share Alike 4.0 International
www.chimeric.de Valid CSS Driven by DokuWiki do yourself a favour and use a real browser - get firefox!! Recent changes RSS feed Valid XHTML 1.0