can-ascii

Can bus monitoring tool based on arduino and can bus shield. Implements CAN ASCII/SLCAN protocol compatible with Lawicel CAN232/CANUSB.

See protocol definition here http://www.can232.com/docs/can232_v3.pdf and here http://www.can232.com/docs/canusb_manual.pdf

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// // // Commands not supported/not implemented: // s, W, M, m, U //
// Commands modified: // S - supports not declared 83.3 rate straight away (S9)
// refer to https://github.com/latonita/CAN_BUS_Shield fork with 83.3 support, easy to add. // F - returns MCP2515 error flags // Z - extra Z2 option enables 4 byte timestamp vs standard 2 byte (60000ms max) // ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// //
// CODE SUPPORTED SYNTAX DESCRIPTION
// #define LW232_CMD_SETUP 'S' // YES+ Sn[CR] Setup with standard CAN bit-rates where n is 0-8. // S0 10Kbit S4 125Kbit S8 1Mbit // S1 20Kbit S5 250Kbit S9 83.3Kbit // S2 50Kbit S6 500Kbit // S3 100Kbit S7 800Kbit #define LW232_CMD_SETUP_BTR 's' // - sxxyy[CR] Setup with BTR0/BTR1 CAN bit-rates where xx and yy is a hex value. #define LW232_CMD_OPEN 'O' // YES O[CR] Open the CAN channel in normal mode (sending & receiving). #define LW232_CMD_LISTEN 'L' // YES L[CR] Open the CAN channel in listen only mode (receiving). #define LW232_CMD_CLOSE 'C' // YES C[CR] Close the CAN channel. #define LW232_CMD_TX11 't' // YES tiiildd...[CR] Transmit a standard (11bit) CAN frame. #define LW232_CMD_TX29 'T' // YES Tiiiiiiiildd...[CR] Transmit an extended (29bit) CAN frame #define LW232_CMD_RTR11 'r' // YES riiil[CR] Transmit an standard RTR (11bit) CAN frame. #define LW232_CMD_RTR29 'R' // YES Riiiiiiiil[CR] Transmit an extended RTR (29bit) CAN frame. #define LW232_CMD_POLL_ONE 'P' // YES P[CR] Poll incomming FIFO for CAN frames (single poll) #define LW232_CMD_POLL_MANY 'A' // YES A[CR] Polls incomming FIFO for CAN frames (all pending frames) #define LW232_CMD_FLAGS 'F' // YES+ F[CR] Read Status Flags. #define LW232_CMD_AUTOPOLL 'X' // YES Xn[CR] Sets Auto Poll/Send ON/OFF for received frames. #define LW232_CMD_FILTER 'W' // - Wn[CR] Filter mode setting. By default CAN232 works in dual filter mode (0) and is backwards compatible with previous CAN232 versions. #define LW232_CMD_ACC_CODE 'M' // - Mxxxxxxxx[CR] Sets Acceptance Code Register (ACn Register of SJA1000). // we use MCP2515, not supported #define LW232_CMD_ACC_MASK 'm' // - mxxxxxxxx[CR] Sets Acceptance Mask Register (AMn Register of SJA1000). // we use MCP2515, not supported #define LW232_CMD_UART 'U' // YES Un[CR] Setup UART with a new baud rate where n is 0-6. #define LW232_CMD_VERSION1 'V' // YES v[CR] Get Version number of both CAN232 hardware and software #define LW232_CMD_VERSION2 'v' // YES V[CR] Get Version number of both CAN232 hardware and software #define LW232_CMD_SERIAL 'N' // YES N[CR] Get Serial number of the CAN232. #define LW232_CMD_TIMESTAMP 'Z' // YES+ Zn[CR] Sets Time Stamp ON/OFF for received frames only. EXTENSION to LAWICEL: Z2 - millis() timestamp w/o standard 60000ms cycle #define LW232_CMD_AUTOSTART 'Q' // YES todo Qn[CR] Auto Startup feature (from power on).