?? probe_com.c
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/*
*********************************************************************************************************
* uC/Probe Communication
*
* (c) Copyright 2007; Micrium, Inc.; Weston, FL
*
* All rights reserved. Protected by international copyright laws.
* Knowledge of the source code may NOT be used to develop a similar product.
* Please help us continue to provide the Embedded community with the finest
* software available. Your honesty is greatly appreciated.
*********************************************************************************************************
*/
/*
*********************************************************************************************************
*
* uC/Probe
*
* Communication: Generic
*
* Filename : probe_com.c
* Version : V1.40
* Programmer(s) : BAN
* Note(s) : (1) This file contains code to respond to generic (non protocol-dependent)
* commands received by the target.
*********************************************************************************************************
*/
/*
*********************************************************************************************************
* INCLUDE FILES
*********************************************************************************************************
*/
#define PROBE_COM_GLOBALS
#include <probe_com.h>
/*
*********************************************************************************************************
* LOCAL DEFINES
*********************************************************************************************************
*/
/*
*********************************************************************************************************
* DATA FORMATS
*
* Note(s): (1) The first word in all TX data segments is identical:
*
* (A) A 2-byte format;
* (B) A 1-byte status;
* (C) A 1-byte modifier, currently unused.
*
*
* (2) The first two bytes in all RX data segments is identical:
* (A) A 2-byte format;
*
* (3) The following data formats are currently defined:
*
* (A) PROBE_COM_FMT_?X_QUERY. The RX request queries the target about a particular
* setup parameter or capability.
*
* (B) PROBE_COM_FMT_?X_SIMPLE_RD. The RX request instructs the target to send
* data read from its memory, for a certain {memory address, data length} pair
* (which is given in the request).
*
* (C) PROBE_COM_FMT_?X_SIMPLE_WR. The RX request instructs the target to
* write certain data into its memory, for a certain {memory address, data length,
* data} triplet (which is given in the request).
*
* (D) PROBE_COM_FMT_?X_MULTIPLE_RD. The RX request instructs the target to send
* data read from its memory, for a certain set of {memory address, data length}
* pairs (which are given in the request).
*
* (E) PROBE_COM_FMT_?X_STR_GET. The RX request instructs the target to
* return a string that the user has stored in the target's string buffer.
*
**********************************************************************************************************
*/
#define PROBE_COM_FMT_TX_ERROR 0x8000
#define PROBE_COM_FMT_RX_QUERY 0x0001
#define PROBE_COM_FMT_TX_QUERY 0x8001
#define PROBE_COM_FMT_RX_SIMPLE_RD 0x0002
#define PROBE_COM_FMT_TX_SIMPLE_RD 0x8002
#define PROBE_COM_FMT_RX_SIMPLE_WR 0x0003
#define PROBE_COM_FMT_TX_SIMPLE_WR 0x8003
#define PROBE_COM_FMT_RX_MULTIPLE_RD 0x0007
#define PROBE_COM_FMT_TX_MULTIPLE_RD 0x8007
#define PROBE_COM_FMT_TX_MULTIPLE_RD_LO 0x07
#define PROBE_COM_FMT_TX_MULTIPLE_RD_HI 0x80
#define PROBE_COM_FMT_RX_STR_GET 0x0009
#define PROBE_COM_FMT_TX_STR_GET 0x8009
/*
*********************************************************************************************************
* STATUS CONSTANTS
*
* Note(s): (1) The following status constants are currently defined:
*
* (A) PROBE_COM_STATUS_OK. The target was able to respond to the command.
*
* (B) PROBE_COM_STATUS_STR_NONE. A PROBE_COM_FMT_RX_STR_GET packet is received,
* but the target has no string to send.
*
* (C) PROBE_COM_STATUS_QUERY_NOT_SUPPORTED. A PROBE_COM_FMT_RX_QUERY packet is
* received, but the query is not supported.
*
* (D) PROBE_COM_STATUS_TX_PKT_TOO_LARGE. The response to the request would be too
* large to fit into the target.
*
* (E) PROBE_COM_STATUS_RX_PKT_WRONG_SIZE. The request packet is not the expected
* size.
*
* (F) PROBE_COM_STATUS_FAIL. Another error occurred.
*
**********************************************************************************************************
*/
#define PROBE_COM_STATUS_OK 0x01
#define PROBE_COM_STATUS_STR_NONE 0xF8
#define PROBE_COM_STATUS_UNKNOWN_REQUEST 0xF9
#define PROBE_COM_STATUS_QUERY_NOT_SUPPORTED 0xFC
#define PROBE_COM_STATUS_TX_PKT_TOO_LARGE 0xFD
#define PROBE_COM_STATUS_RX_PKT_WRONG_SIZE 0xFE
#define PROBE_COM_STATUS_FAIL 0xFF
/*
*********************************************************************************************************
* QUERIES
*
* Note(s): (1) The following queries are currently defined:
*
* (A) PROBE_COM_QUERY_MAX_RX_SIZE. The target responds with the data size of the
* largest packet it can receive.
*
* (B) PROBE_COM_QUERY_MAX_TX_SIZE. The target responds with the data size of the
* largest packet it can send.
*
* (C) PROBE_COM_ENDIANNESS_TEST. The target responds with a 4-byte data value. On
* little-endian CPUs, this will be received as 0x12345678; on big-endian CPUs,
* this will be received as 0x87654321.
*
* (D) PROBE_COM_QUERY_FMT_SUPPORT. The target responds with a list of the formats
* the target can respond to.
*
**********************************************************************************************************
*/
/* --------------------- CONFIGURATION -------------------- */
#define PROBE_COM_QUERY_MAX_RX_SIZE 0x0101
#define PROBE_COM_QUERY_MAX_TX_SIZE 0x0102
/* ------------------- TARGET PROPERTIES ------------------ */
#define PROBE_COM_QUERY_ENDIANNESS_TEST 0x0201
/* --------------- COMMUNICATION CAPABILITIES ------------- */
#define PROBE_COM_QUERY_FMT_SUPPORT 0x1001
/*
*********************************************************************************************************
* MODIFIERS
*
* Note(s): (1) The following modifiers are currently defined:
*
* (A) PROBE_COM_MODIFIER_NONE. This is the generic modifier.
*
* (B) PROBE_COM_MODIFIER_STR_HAVE. The target indicates that it has a string to
* transmit.
*
**********************************************************************************************************
*/
#define PROBE_COM_MODIFIER_NONE 0x00
#define PROBE_COM_MODIFIER_STR_HAVE 0x01
/*
*********************************************************************************************************
* HEADER SIZES
*
* Note(s): (1) Every RX packet has a 2-byte "header".
*
* (2) Every TX packet has a 4-byte "header".
**********************************************************************************************************
*/
#define PROBE_COM_SIZE_RX_HEADER 2
#define PROBE_COM_SIZE_TX_HEADER 4
/*
*********************************************************************************************************
* LOCAL CONSTANTS
*********************************************************************************************************
*/
/*
*********************************************************************************************************
* LOCAL DATA TYPES
*********************************************************************************************************
*/
/*
*********************************************************************************************************
* LOCAL TABLES
*********************************************************************************************************
*/
/*
*********************************************************************************************************
* LOCAL GLOBAL VARIABLES
*********************************************************************************************************
*/
#if (PROBE_COM_SUPPORT_STR == DEF_TRUE)
static CPU_INT16U ProbeComStrBufWrIx;
static CPU_INT16U ProbeComStrBufRdIx;
static CPU_CHAR ProbeComStrBuf[PROBE_COM_STR_BUF_SIZE];
#endif
static CPU_INT32U ProbeComEndiannessTest;
/*
*********************************************************************************************************
* LOCAL FUNCTION PROTOTYPES
*********************************************************************************************************
*/
/* ---------- PROCESS REQUEST & FORM RESPONSE --------- */
static CPU_INT08U ProbeCom_PktModifier (void);
static CPU_INT16U ProbeCom_CmdError (CPU_INT08U *tx_buf,
CPU_INT08U com_error);
static CPU_INT16U ProbeCom_CmdQuery (CPU_INT08U *rx_buf,
CPU_INT08U *tx_buf,
CPU_INT16U rx_pkt_sz,
CPU_INT16U tx_buf_sz);
static CPU_INT16U ProbeCom_CmdSimpleRd (CPU_INT08U *rx_buf,
CPU_INT08U *tx_buf,
CPU_INT16U rx_pkt_sz,
CPU_INT16U tx_buf_sz);
#if (PROBE_COM_SUPPORT_WR == DEF_TRUE)
static CPU_INT16U ProbeCom_CmdSimpleWr (CPU_INT08U *rx_buf,
CPU_INT08U *tx_buf,
CPU_INT16U rx_pkt_sz,
CPU_INT16U tx_buf_sz);
#endif
static CPU_INT16U ProbeCom_CmdMultipleRd(CPU_INT08U *rx_buf,
CPU_INT08U *tx_buf,
CPU_INT16U rx_pkt_sz,
CPU_INT16U tx_buf_sz);
#if (PROBE_COM_SUPPORT_STR == DEF_TRUE)
static CPU_INT16U ProbeCom_CmdStrGet (CPU_INT08U *rx_buf,
CPU_INT08U *tx_buf,
CPU_INT16U rx_pkt_sz,
CPU_INT16U tx_buf_sz);
#endif
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