From f9ede612872c888e87a98ff2a07b71a2874c7914 Mon Sep 17 00:00:00 2001 From: Qukich Date: Thu, 29 Feb 2024 14:11:43 +0300 Subject: [PATCH] final version --- circular_buf.h | 2 +- client.cpp | 2 +- emulate/hdlc/client.c | 125 +++++++++++++++++ emulate/hdlc/client.h | 45 +++++++ emulate/hdlc/fcs.c | 41 ++++++ emulate/hdlc/fcs.h | 18 +++ emulate/hdlc/hdlc.c | 262 ++++++++++++++++++++++++++++++++++++ emulate/hdlc/hdlc.h | 108 +++++++++++++++ emulate/main.c | 121 +++++++++++++++++ emulate/protocol/protocol.c | 53 ++++++++ emulate/protocol/protocol.h | 32 +++++ protocol.cpp | 25 ++-- protocol.h | 2 +- sketch_feb27a.ino | 68 +++++----- uart.cpp | 30 +++-- 15 files changed, 870 insertions(+), 64 deletions(-) create mode 100644 emulate/hdlc/client.c create mode 100644 emulate/hdlc/client.h create mode 100644 emulate/hdlc/fcs.c create mode 100644 emulate/hdlc/fcs.h create mode 100644 emulate/hdlc/hdlc.c create mode 100644 emulate/hdlc/hdlc.h create mode 100644 emulate/main.c create mode 100644 emulate/protocol/protocol.c create mode 100644 emulate/protocol/protocol.h diff --git a/circular_buf.h b/circular_buf.h index 5a9628f..00235ef 100644 --- a/circular_buf.h +++ b/circular_buf.h @@ -1,7 +1,7 @@ #ifndef CIRCULAR_BUFFER_H #define CIRCULAR_BUFFER_H -#define BUFFER_SIZE 32 +#define BUFFER_SIZE 128 struct circular_buffer{ unsigned char buffer[BUFFER_SIZE]; diff --git a/client.cpp b/client.cpp index 6339369..f6f71e4 100644 --- a/client.cpp +++ b/client.cpp @@ -9,7 +9,7 @@ void init_hdlc_client(struct Client* client, int connecting_frame_timeout){ client->state = IDLE_STATE; client->connecting_frame_timeout = connecting_frame_timeout; connecting_frame_timeout_bf = connecting_frame_timeout; - client->current_index_frame = 20; + client->current_index_frame = 0; client->current_state_hdlc.control_escape = 0; client->current_state_hdlc.fcs = FCS_INIT_VALUE; diff --git a/emulate/hdlc/client.c b/emulate/hdlc/client.c new file mode 100644 index 0000000..f2a21be --- /dev/null +++ b/emulate/hdlc/client.c @@ -0,0 +1,125 @@ +#include "client.h" +#include "hdlc.h" +#include "stdio.h" + +#define SIZE_DATA_BUFFERS 64 + +int connecting_frame_timeout_bf; + +void init_hdlc_client(struct Client* client, int connecting_frame_timeout){ + client->state = IDLE_STATE; + client->connecting_frame_timeout = connecting_frame_timeout; + connecting_frame_timeout_bf = connecting_frame_timeout; + client->current_index_frame = 0; + + client->current_state_hdlc.control_escape = 0; + client->current_state_hdlc.fcs = FCS_INIT_VALUE; + client->current_state_hdlc.start_index = -1; + client->current_state_hdlc.end_index = -1; + client->current_state_hdlc.src_index = 0; + client->current_state_hdlc.dest_index = 0; +} + +void hdlc_connect(struct Client* client){ + client->state = CONNECTING; + + client->frameS.seq_no = 0; + client->frameS.frame = S_FRAME; + client->current_index_frame = client->frameS.seq_no; +} + +int hdlc_send_data(struct Client* client, uint8_t* data, size_t data_len){ + if (client->state != READY_STATE){ + return ERR_INVALID_STATE; + } + + if (SIZE_DATA_BUFFERS < data_len){ + return ERR_INVALID_DATA_SIZE; + } + + client->frameI.seq_no = 0; + client->frameI.frame = I_FRAME; + client->data_i_frame = data; + client->len_data_i_frame = data_len; + client->current_index_frame = client->frameI.seq_no; + + client->state = RECIVING; + return 0; +} + +int hdlc_get_raw_frame(struct Client *client, uint8_t* buffer, size_t lenBuffer) { + if(client->state == RECIVING){ + int ret = hdlc_frame_data(&client->frameI, client->data_i_frame, + client->len_data_i_frame, buffer, &lenBuffer); + if (ret < 0){ + printf("err in get_frame: %d\n", ret); + } + } + + if (client->state == CONNECTING){ + int ret = hdlc_frame_data(&client->frameS, NULL, 0, buffer, &lenBuffer); + + if (ret < 0){ + printf("err in get_frame: %d\n", ret); + } + } + + if (client->state == DISCONNECTING){ + int ret = hdlc_frame_data(&client->frame_rej, NULL, 0, buffer, &lenBuffer); + + if (ret < 0){ + printf("err in get_frame: %d\n", ret); + } + } + + return 0; +} + +int hdlc_decode_recived_raw_data(struct Client* client, uint8_t buffer[], size_t len_buffer, uint8_t* recived_data, size_t* len_recived_data){ + hdlc_control_t recv_control; + uint8_t recive[len_buffer]; + + int ret = hdlc_get_data_with_state(&client->current_state_hdlc,&recv_control, buffer, len_buffer, recive, + &len_buffer); + + if (ret < 0) { + return ret; + } + + if (recv_control.seq_no != client->current_index_frame){ + client->state = DISCONNECTING; + client->frame_rej.seq_no = 0; + client->frame_rej.frame = S_FRAME_NACK; + return ERR_INVALID_SEQ_NUMBER_FRAME; + } + + switch (recv_control.frame) { + case S_FRAME: + client->state = READY_STATE; + break; + case I_FRAME: + for (int i = 0; i < sizeof(recive)-3; i++){ + recived_data[i] = recive[i]; + } + + *len_recived_data = sizeof(recive)-3; + break; + case S_FRAME_NACK: + client->state = DISCONNECTING; + client->frame_rej.seq_no = 0; + client->frame_rej.frame = S_FRAME_NACK; + return ERR_INVALID_SEQ_NUMBER_FRAME; + } + + client->connecting_frame_timeout = connecting_frame_timeout_bf; + return 0; +} + +int hdlc_timeout_handler(struct Client* client, int delta_time){ + client->connecting_frame_timeout -= delta_time; + + if (client->connecting_frame_timeout <= 0){ + return ERR_FRAME_TIME_OUT; + } + return 0; +} \ No newline at end of file diff --git a/emulate/hdlc/client.h b/emulate/hdlc/client.h new file mode 100644 index 0000000..0af1cfc --- /dev/null +++ b/emulate/hdlc/client.h @@ -0,0 +1,45 @@ +#ifndef CLIENT_H +#define CLIENT_H + +#include +#include +#include "hdlc.h" + +#define ERR_INVALID_DATA_SIZE -1 +#define ERR_ALL_BUFFERS_FILL -2 +#define ERR_INVALID_PARAMS -3 +#define ERR_INVALID_STATE -4 +#define ERR_FRAME_TIME_OUT -5 +#define ERR_INVALID_SEQ_NUMBER_FRAME -6 +#define ERR_TIMEOUT_ANSWER -7 + +enum HDLCState { + UNINITIALIZED_STATE = 0, // состояние до инцилизации + IDLE_STATE, // Состояние ожидания начала + READY_STATE, // Состояние принятия + CONNECTING, // состояние соединения + DISCONNECTING, // состояния отключения + RECIVING // состояние приема и отправки +}; + +struct Client{ + enum HDLCState state; + int connecting_frame_timeout; //-1 + uint8_t current_index_frame; + hdlc_state_t current_state_hdlc; + hdlc_control_t frameS; + hdlc_control_t frameI; + uint8_t* data_i_frame; + size_t len_data_i_frame; + hdlc_control_t frame_rej; +}; + +void init_hdlc_client(struct Client* client, int connecting_frame_timeout); +void hdlc_connect(struct Client* client); +int hdlc_send_data(struct Client* client, uint8_t* data, size_t data_len); +int hdlc_get_raw_frame(struct Client *client, uint8_t* buffer, size_t lenBuffer); +//принимает буффер с уарта +int hdlc_decode_recived_raw_data(struct Client* client, uint8_t buffer[], size_t len_buffer, uint8_t* recived_data, size_t* len_recived_data); +int hdlc_timeout_handler(struct Client* client, int delta_time); + +#endif //CLIENT_H diff --git a/emulate/hdlc/fcs.c b/emulate/hdlc/fcs.c new file mode 100644 index 0000000..6e29cf8 --- /dev/null +++ b/emulate/hdlc/fcs.c @@ -0,0 +1,41 @@ +#include "fcs.h" + +/* + * CRC-Type: CRC16 CCIT + * Polynomial: 0x1021 (x^16+x^12+x^5+1) + * Lookup Table: Reflected + */ +static const unsigned short fcstab[256] = { + 0x0000, 0x1189, 0x2312, 0x329b, + 0x4624, 0x57ad, 0x6536, 0x74bf, 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, + 0xdbe5, 0xe97e, 0xf8f7, 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, + 0x75b7, 0x643e, 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, + 0xe876, 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd, + 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5, 0x3183, + 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c, 0xbdcb, 0xac42, + 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974, 0x4204, 0x538d, 0x6116, + 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb, 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, + 0x8868, 0x99e1, 0xab7a, 0xbaf3, 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, + 0x0528, 0x37b3, 0x263a, 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, + 0xbbfb, 0xaa72, 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, + 0x17b9, 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1, + 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738, 0xffcf, + 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70, 0x8408, 0x9581, + 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7, 0x0840, 0x19c9, 0x2b52, + 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff, 0x9489, 0x8500, 0xb79b, 0xa612, + 0xd2ad, 0xc324, 0xf1bf, 0xe036, 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, + 0x4f6c, 0x7df7, 0x6c7e, 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, + 0xc03c, 0xd1b5, 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, + 0x5dfd, 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134, + 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c, 0xc60c, + 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3, 0x4a44, 0x5bcd, + 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb, 0xd68d, 0xc704, 0xf59f, + 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232, 0x5ac5, 0x4b4c, 0x79d7, 0x685e, + 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, + 0xb0a3, 0x8238, 0x93b1, 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, + 0x0e70, 0x1ff9, 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, + 0x8330, 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78 }; + +FCS_SIZE calc_fcs(FCS_SIZE fcs, unsigned char value) { + return (fcs >> 8) ^ fcstab[(fcs ^ value) & 0xff]; +} \ No newline at end of file diff --git a/emulate/hdlc/fcs.h b/emulate/hdlc/fcs.h new file mode 100644 index 0000000..6673d40 --- /dev/null +++ b/emulate/hdlc/fcs.h @@ -0,0 +1,18 @@ +#ifndef FCS_H +#define FCS_H + +#define FCS_INIT_VALUE 0xFFFF /* FCS initialization value. */ +#define FCS_GOOD_VALUE 0xF0B8 /* FCS value for valid frames. */ +#define FCS_INVERT_MASK 0xFFFF /* Invert the FCS value accordingly to the specification */ +#define FCS_SIZE unsigned short + +/** + * Calculates a new FCS based on the current value and value of data. + * + * @param fcs Current FCS value + * @param value The value to be added + * @returns Calculated FCS value + */ +FCS_SIZE calc_fcs(FCS_SIZE fcs, unsigned char value); + +#endif \ No newline at end of file diff --git a/emulate/hdlc/hdlc.c b/emulate/hdlc/hdlc.c new file mode 100644 index 0000000..a5792e5 --- /dev/null +++ b/emulate/hdlc/hdlc.c @@ -0,0 +1,262 @@ +#include "hdlc.h" + +// HDLC Control field bit positions +#define HDLC_CONTROL_S_OR_U_FRAME_BIT 0 +#define HDLC_CONTROL_SEND_SEQ_NO_BIT 1 +#define HDLC_CONTROL_S_FRAME_TYPE_BIT 2 +#define HDLC_CONTROL_POLL_BIT 4 +#define HDLC_CONTROL_RECV_SEQ_NO_BIT 5 + +// HDLC Control type definitions +#define HDLC_CONTROL_TYPE_RECEIVE_READY 0 +#define HDLC_CONTROL_TYPE_RECEIVE_NOT_READY 1 +#define HDLC_CONTROL_TYPE_REJECT 2 +#define HDLC_CONTROL_TYPE_SELECTIVE_REJECT 3 + +static hdlc_state_t hdlc_state = { + .control_escape = 0, + .fcs = FCS_INIT_VALUE, + .start_index = -1, + .end_index = -1, + .src_index = 0, + .dest_index = 0, +}; + +int hdlc_set_state(hdlc_state_t *state) { + if (!state) { + return -EINVAL; + } + + hdlc_state = *state; + return 0; +} + + +int hdlc_get_state(hdlc_state_t *state) { + if (!state) { + return -EINVAL; + } + + *state = hdlc_state; + return 0; +} + +void hdlc_escape_value(char value, char *dest, int *dest_index) { + // Check and escape the value if needed + if ((value == HDLC_FLAG_SEQUENCE) || (value == HDLC_CONTROL_ESCAPE)) { + dest[(*dest_index)++] = HDLC_CONTROL_ESCAPE; + value ^= 0x20; + } + + // Add the value to the destination buffer and increment destination index + dest[(*dest_index)++] = value; +} + +hdlc_control_t hdlc_get_control_type(unsigned char control) { + hdlc_control_t value; + + // Check if the frame is a S-frame (or U-frame) + if (control & (1 << HDLC_CONTROL_S_OR_U_FRAME_BIT)) { + // Check if S-frame type is a Receive Ready (ACK) + if (((control >> HDLC_CONTROL_S_FRAME_TYPE_BIT) & 0x3) + == HDLC_CONTROL_TYPE_RECEIVE_READY) { + value.frame = S_FRAME; + } else { + // Assume it is an NACK since Receive Not Ready, Selective Reject and U-frames are not supported + value.frame = S_FRAME_NACK; + } + + // Add the receive sequence number from the S-frame (or U-frame) + value.seq_no = (control >> HDLC_CONTROL_RECV_SEQ_NO_BIT); + } else { + // It must be an I-frame so add the send sequence number (receive sequence number is not used) + value.frame = I_FRAME; + value.seq_no = (control >> HDLC_CONTROL_SEND_SEQ_NO_BIT); + } + + return value; +} + +unsigned char hdlc_frame_control_type(hdlc_control_t *control) { + unsigned char value = 0; + + switch (control->frame) { + case I_FRAME: + // Create the HDLC I-frame control byte with Poll bit set + value |= (control->seq_no << HDLC_CONTROL_SEND_SEQ_NO_BIT); + value |= (1 << HDLC_CONTROL_POLL_BIT); + break; + case S_FRAME: + // Create the HDLC Receive Ready S-frame control byte with Poll bit cleared + value |= (control->seq_no << HDLC_CONTROL_RECV_SEQ_NO_BIT); + value |= (1 << HDLC_CONTROL_S_OR_U_FRAME_BIT); + break; + case S_FRAME_NACK: + // Create the HDLC Receive Ready S-frame control byte with Poll bit cleared + value |= (control->seq_no << HDLC_CONTROL_RECV_SEQ_NO_BIT); + value |= (HDLC_CONTROL_TYPE_REJECT << HDLC_CONTROL_S_FRAME_TYPE_BIT); + value |= (1 << HDLC_CONTROL_S_OR_U_FRAME_BIT); + break; + } + + return value; +} + +void hdlc_get_data_reset() { + hdlc_get_data_reset_with_state(&hdlc_state); +} + +void hdlc_get_data_reset_with_state(hdlc_state_t *state) { + state->fcs = FCS_INIT_VALUE; + state->start_index = state->end_index = -1; + state->src_index = state->dest_index = 0; + state->control_escape = 0; +} + +//int hdlc_get_data(hdlc_control_t *control, const char *src, +// unsigned int src_len, char *dest, unsigned int *dest_len) +int hdlc_get_data(hdlc_control_t *control, uint8_t *src, + size_t src_len, uint8_t *dest, size_t *dest_len){ + return hdlc_get_data_with_state(&hdlc_state, control, src, src_len, dest, dest_len); +} + +//int hdlc_get_data_with_state(hdlc_state_t *state, hdlc_control_t *control, const char *src, +// unsigned int src_len, char *dest, unsigned int *dest_len) +int +hdlc_get_data_with_state(hdlc_state_t *state, hdlc_control_t *control, uint8_t *src, + size_t src_len, uint8_t *dest, size_t *dest_len){ + int ret; + char value; + unsigned int i; + + // Make sure that all parameters are valid + if (!state || !control || !src || !dest || !dest_len) { + return -EINVAL; + } + + // Run through the data bytes + for (i = 0; i < src_len; i++) { + // First find the start flag sequence + if (state->start_index < 0) { + if (src[i] == HDLC_FLAG_SEQUENCE) { + // Check if an additional flag sequence byte is present + if ((i < (src_len - 1)) && (src[i + 1] == HDLC_FLAG_SEQUENCE)) { + // Just loop again to silently discard it (accordingly to HDLC) + continue; + } + + state->start_index = state->src_index; + } + } else { + // Check for end flag sequence + if (src[i] == HDLC_FLAG_SEQUENCE) { + // Check if an additional flag sequence byte is present or earlier received + if (((i < (src_len - 1)) && (src[i + 1] == HDLC_FLAG_SEQUENCE)) + || ((state->start_index + 1) == state->src_index)) { + // Just loop again to silently discard it (accordingly to HDLC) + continue; + } + + state->end_index = state->src_index; + break; + } else if (src[i] == HDLC_CONTROL_ESCAPE) { + state->control_escape = 1; + } else { + // Update the value based on any control escape received + if (state->control_escape) { + state->control_escape = 0; + value = src[i] ^ 0x20; + } else { + value = src[i]; + } + + // Now update the FCS value + state->fcs = calc_fcs(state->fcs, value); + + if (state->src_index == state->start_index + 2) { + // Control field is the second byte after the start flag sequence + *control = hdlc_get_control_type(value); + } else if (state->src_index > (state->start_index + 2)) { + // Start adding the data values after the Control field to the buffer + dest[state->dest_index++] = value; + } + } + } + state->src_index++; + } + + // Check for invalid frame (no start or end flag sequence) + if ((state->start_index < 0) || (state->end_index < 0)) { + // Return no message and make sure destination length is 0 + *dest_len = 0; + ret = -ENOMSG; + } else { + // A frame is at least 4 bytes in size and has a valid FCS value + if ((state->end_index < (state->start_index + 4)) + || (state->fcs != FCS_GOOD_VALUE)) { + // Return FCS error and indicate that data up to end flag sequence in buffer should be discarded + *dest_len = i; + ret = -EIO; + } else { + // Return success and indicate that data up to end flag sequence in buffer should be discarded + *dest_len = state->dest_index - sizeof(state->fcs); + ret = i; + } + + // Reset values for next frame + hdlc_get_data_reset_with_state(state); + } + + return ret; +} + +//int hdlc_frame_data(hdlc_control_t *control, const char *src, +// unsigned int src_len, char *dest, unsigned int *dest_len) +int hdlc_frame_data(hdlc_control_t *control, uint8_t *src, + size_t src_len, uint8_t *dest, size_t *dest_len){ + unsigned int i; + int dest_index = 0; + unsigned char value = 0; + FCS_SIZE fcs = FCS_INIT_VALUE; + + // Make sure that all parameters are valid + if (!control || (!src && (src_len > 0)) || !dest || !dest_len) { + return -EINVAL; + } + + // Start by adding the start flag sequence + dest[dest_index++] = HDLC_FLAG_SEQUENCE; + + // Add the all-station address from HDLC (broadcast) + fcs = calc_fcs(fcs, HDLC_ALL_STATION_ADDR); + hdlc_escape_value(HDLC_ALL_STATION_ADDR, dest, &dest_index); + + // Add the framed control field value + value = hdlc_frame_control_type(control); + fcs = calc_fcs(fcs, value); + hdlc_escape_value(value, dest, &dest_index); + + // Only DATA frames should contain data + if (control->frame == I_FRAME) { + // Calculate FCS and escape data + for (i = 0; i < src_len; i++) { + fcs = calc_fcs(fcs, src[i]); + hdlc_escape_value(src[i], dest, &dest_index); + } + } + + // Invert the FCS value accordingly to the specification + fcs ^= FCS_INVERT_MASK; + + // Run through the FCS bytes and escape the values + for (i = 0; i < sizeof(fcs); i++) { + value = ((fcs >> (8 * i)) & 0xFF); + hdlc_escape_value(value, dest, &dest_index); + } + + // Add end flag sequence and update length of frame + dest[dest_index++] = HDLC_FLAG_SEQUENCE; + *dest_len = dest_index; + + return 0; +} \ No newline at end of file diff --git a/emulate/hdlc/hdlc.h b/emulate/hdlc/hdlc.h new file mode 100644 index 0000000..12ddaa1 --- /dev/null +++ b/emulate/hdlc/hdlc.h @@ -0,0 +1,108 @@ +// +// Created by 79513 on 15.12.2023. +// + +#ifndef HDLC_H +#define HDLC_H + +#include "fcs.h" +#include +#include "stdint.h" + +/** HDLC start/end flag sequence */ +#define HDLC_FLAG_SEQUENCE 0x7E + +/** HDLC control escape value */ +#define HDLC_CONTROL_ESCAPE 0x7D + +/** HDLC all station address */ +#define HDLC_ALL_STATION_ADDR 0xFF + +/** Supported HDLC frame types */ +typedef enum { + I_FRAME, + S_FRAME, + S_FRAME_NACK, +} hdlc_frame_t; + +/** Control field information */ +typedef struct { + hdlc_frame_t frame; + unsigned char seq_no :3; +} hdlc_control_t; + +/** Variables used in hdlc_get_data and hdlc_get_data_with_state + * to keep track of received buffers + */ +typedef struct { + char control_escape; + FCS_SIZE fcs; + int start_index; + int end_index; + int src_index; + int dest_index; +} hdlc_state_t; + +/** + * Retrieves data from specified buffer containing the HDLC frame. Frames can be + * parsed from multiple buffers e.g. when received via UART. + * + * @param[out] control Control field structure with frame type and sequence number + * @param[in] src Source buffer with frame + * @param[in] src_len Source buffer length + * @param[out] dest Destination buffer (should be able to contain max frame size) + * @param[out] dest_len Destination buffer length + * @retval >=0 Success (size of returned value should be discarded from source buffer) + * @retval -EINVAL Invalid parameter + * @retval -ENOMSG Invalid message + * @retval -EIO Invalid FCS (size of dest_len should be discarded from source buffer) + * + * @see hdlc_get_data_with_state + */ +int hdlc_get_data(hdlc_control_t *control, uint8_t *src, + size_t src_len, uint8_t *dest, size_t *dest_len); + +/** + * Retrieves data from specified buffer containing the HDLC frame. Frames can be + * parsed from multiple buffers e.g. when received via UART. + * + * This function is a variation of @ref hdlc_get_data + * The difference is only in first argument: hdlc_state_t *state + * Data under that pointer is used to keep track of internal buffers. + * + * @see hdlc_get_data + */ +int hdlc_get_data_with_state(hdlc_state_t *state, hdlc_control_t *control, uint8_t *src, + size_t src_len, uint8_t *dest, size_t *dest_len); + +/** + * Resets values used in yahdlc_get_data function to keep track of received buffers + */ +void hdlc_get_data_reset(); + +/** + * This is a variation of @ref hdlc_get_data_reset + * Resets state values that are under the pointer provided as argument + * + * This function need to be called before the first call to hdlc_get_data_with_state + * when custom state storage is used. + * + * @see hdlc_get_data_reset + */ +void hdlc_get_data_reset_with_state(hdlc_state_t *state); + +/** + * Creates HDLC frame with specified data buffer. + * + * @param[in] control Control field structure with frame type and sequence number + * @param[in] src Source buffer with data + * @param[in] src_len Source buffer length + * @param[out] dest Destination buffer (should be bigger than source buffer) + * @param[out] dest_len Destination buffer length + * @retval 0 Success + * @retval -EINVAL Invalid parameter + */ +int hdlc_frame_data(hdlc_control_t *control, uint8_t *src, + size_t src_len, uint8_t *dest, size_t *dest_len); + +#endif //HDLC_H diff --git a/emulate/main.c b/emulate/main.c new file mode 100644 index 0000000..3f76ebf --- /dev/null +++ b/emulate/main.c @@ -0,0 +1,121 @@ +#include +#include +#include "hdlc/client.h" +#include "stdint.h" +#include "stdbool.h" +#include "protocol/protocol.h" + +int main() { + struct Client hdlc; + HANDLE Port; + init_hdlc_client(&hdlc, 200); + + //Открыть COM-порт + Port = CreateFile("COM3", GENERIC_READ | GENERIC_WRITE, + 0, NULL, OPEN_EXISTING, + 0, NULL); + + if (Port == INVALID_HANDLE_VALUE) { + DWORD errorCode = GetLastError(); + printf("Create file err: %lu.\n", errorCode); + return 1; + } + + COMMTIMEOUTS timeouts1 = {0}; + // Установка таймаутов чтения/записи + timeouts1.ReadIntervalTimeout = 100; + timeouts1.ReadTotalTimeoutConstant = 100; + timeouts1.ReadTotalTimeoutMultiplier = 50; + timeouts1.WriteTotalTimeoutConstant = 50; + timeouts1.WriteTotalTimeoutMultiplier = 50; + + if (!SetCommTimeouts(Port, &timeouts1)) { + printf("err add timeout COM port.\n"); + CloseHandle(Port); + return 1; + } + + bool flag_connect = false; + while (!flag_connect){ + uint8_t buffer_recive_connect[6]; + DWORD received; + BOOL success = ReadFile(Port, buffer_recive_connect, sizeof buffer_recive_connect, + &received, NULL); + if (!success) + { + printf("Failed to read from port"); + return -1; + } + + hdlc_decode_recived_raw_data(&hdlc, buffer_recive_connect, sizeof buffer_recive_connect, 0, 0); + + + if (hdlc.state == READY_STATE){ + struct Client tmp; + hdlc_connect(&tmp); + uint8_t buffer_send_connect[10]; + + hdlc_get_raw_frame(&tmp, buffer_send_connect, sizeof buffer_send_connect); + + //Write frame from port 1 + DWORD written; + BOOL success_write_send = WriteFile(Port, buffer_send_connect, sizeof buffer_send_connect, + &written, NULL); + + if (!success_write_send){ + DWORD errorCode = GetLastError(); + printf("WriteFile err: %lu.\n", errorCode); + return -1; + } + if (written != sizeof buffer_send_connect){ + printf("Failed to write all bytes to port"); + return -1; + } + + flag_connect = true; + } + } + + struct message mess; + char str_v[] = "its working! wow! postavte 3 "; + mess.numbers[0] = 123.0; + mess.numbers[1] = 456.0; + mess.numbers[2] = 7.0; + mess.len_numbers = 3; + strcpy(mess.str, str_v); + mess.len_str = sizeof str_v; + + + uint8_t data[64]; + size_t len_data; + + protocol_encode(mess, data, &len_data); + + int err = hdlc_send_data(&hdlc, data, sizeof(data)); + printf("%d\n", err); + + uint8_t buffer_for_ex_data[72]; + + hdlc_get_raw_frame(&hdlc, buffer_for_ex_data, sizeof buffer_for_ex_data); + + DWORD written_data; + BOOL success_write_data = WriteFile(Port, buffer_for_ex_data, sizeof buffer_for_ex_data, + &written_data, NULL); + + if (!success_write_data){ + DWORD errorCode = GetLastError(); + printf("WriteFile err: %lu.\n", errorCode); + return -1; + } + if (written_data != sizeof buffer_for_ex_data){ + printf("Failed to write all bytes to port"); + return -1; + } + + while (true){ + } + + CloseHandle(Port); + + return 0; +} diff --git a/emulate/protocol/protocol.c b/emulate/protocol/protocol.c new file mode 100644 index 0000000..28806d5 --- /dev/null +++ b/emulate/protocol/protocol.c @@ -0,0 +1,53 @@ +#include "protocol.h" + +void protocol_decode(uint8_t encode_message[], size_t len_encode_message, struct message* decode_message){ + int count_number = 0; + for(int i = 0; i < len_encode_message; i++){ + if (encode_message[i] == FLAG_NUMBER){ + if (count_number < 3){ + union convert_float sample; + for (int z = 0; z < sizeof sample.buf; z++){ + i++; + sample.buf[z] = encode_message[i]; + } + decode_message->numbers[count_number++] = sample.fVal; + decode_message->len_numbers++; + } + } + + + if (encode_message[i] == FLAG_WORD){ + i++; + decode_message->len_str = encode_message[i]; + for (int z = 0; z < encode_message[i]; z++){ + i++; + decode_message->str[z] = encode_message[i]; + } + } + } + decode_message->len_numbers = count_number; +} + +void protocol_encode(struct message message, uint8_t encode_message[], size_t* len_encode_message){ + size_t count = 0; + if (message.len_numbers > 0){ + for (int i = 0; i < message.len_numbers; i++){ + encode_message[count++] = FLAG_NUMBER; + union convert_float sample; + sample.fVal = message.numbers[i]; + for (int z = 0; z < sizeof sample.buf; z++){ + encode_message[count++] = sample.buf[z]; + } + } + } + + if (message.len_str > 0){ + encode_message[count++] = FLAG_WORD; + encode_message[count++] = message.len_str; + for (int i = 0; i < message.len_str; i++){ + encode_message[count++] = message.str[i]; + } + } + + *len_encode_message = count; +} \ No newline at end of file diff --git a/emulate/protocol/protocol.h b/emulate/protocol/protocol.h new file mode 100644 index 0000000..080dd30 --- /dev/null +++ b/emulate/protocol/protocol.h @@ -0,0 +1,32 @@ +#ifndef PROTOCOL_H +#define PROTOCOL_H + +#include +#include +#include +#include "stdio.h" + +#define FLAG_NUMBER 0 +#define FLAG_WORD 1 + +struct message{ + float numbers[4]; + size_t len_numbers; + char str[64]; + size_t len_str; +}; + +union convert_float{ + float fVal; + uint8_t buf[4]; +}; + +union convert_char{ + char* cVal; + uint8_t buf[64]; +}; + +void protocol_decode(uint8_t encode_message[], size_t len_encode_message, struct message* decode_message); +void protocol_encode(struct message message, uint8_t encode_message[], size_t* len_encode_message); + +#endif //PROTOCOL_H diff --git a/protocol.cpp b/protocol.cpp index 9717050..28806d5 100644 --- a/protocol.cpp +++ b/protocol.cpp @@ -4,26 +4,25 @@ void protocol_decode(uint8_t encode_message[], size_t len_encode_message, struct int count_number = 0; for(int i = 0; i < len_encode_message; i++){ if (encode_message[i] == FLAG_NUMBER){ - union convert_float sample; - for (int z = 0; z < sizeof sample.buf; z++){ - i++; - sample.buf[z] = encode_message[i]; + if (count_number < 3){ + union convert_float sample; + for (int z = 0; z < sizeof sample.buf; z++){ + i++; + sample.buf[z] = encode_message[i]; + } + decode_message->numbers[count_number++] = sample.fVal; + decode_message->len_numbers++; } - decode_message->numbers[count_number++] = sample.fVal; - decode_message->len_numbers++; } if (encode_message[i] == FLAG_WORD){ - int count_word = 0; i++; - union convert_char sample; + decode_message->len_str = encode_message[i]; for (int z = 0; z < encode_message[i]; z++){ i++; - sample.buf[z] = encode_message[i]; + decode_message->str[z] = encode_message[i]; } - decode_message->str = sample.cVal; - decode_message->len_str = count_word; } } decode_message->len_numbers = count_number; @@ -45,10 +44,8 @@ void protocol_encode(struct message message, uint8_t encode_message[], size_t* l if (message.len_str > 0){ encode_message[count++] = FLAG_WORD; encode_message[count++] = message.len_str; - union convert_char sample; - sample.cVal = message.str; for (int i = 0; i < message.len_str; i++){ - encode_message[count++] = sample.buf[i]; + encode_message[count++] = message.str[i]; } } diff --git a/protocol.h b/protocol.h index c23f040..2cb6409 100644 --- a/protocol.h +++ b/protocol.h @@ -12,7 +12,7 @@ struct message{ float numbers[3]; size_t len_numbers; - char* str; + char str[64]; size_t len_str; }; diff --git a/sketch_feb27a.ino b/sketch_feb27a.ino index f32c0d5..dc20f3e 100644 --- a/sketch_feb27a.ino +++ b/sketch_feb27a.ino @@ -10,12 +10,19 @@ bool wait_for_connect = false; void setup() { init_lcd(); - init_hdlc_client(&hdlc, 200); + init_hdlc_client(&hdlc, 500); char str[] = "wait for connect... "; strncpy(wait.topLine, str, sizeof(str)); wait.value1 = 1.0f; wait.value2 = 20.0f; wait.value3 = 300.0f; + + char str_data[] = "wait for data... "; + strncpy(recive_data.topLine, str_data, sizeof(str_data)); + recive_data.value1 = 4.0f; + recive_data.value2 = 50.0f; + recive_data.value3 = 600.0f; + UART_init(); } @@ -24,20 +31,20 @@ void loop() { print_lcd(&wait); hdlc_connect(&hdlc); - uint8_t buffer[10]; + uint8_t buffer[6]; + + wait.value2 = 21.0f; hdlc_get_raw_frame(&hdlc, buffer, sizeof buffer); UART_send(buffer, sizeof buffer); - wait.value2 = 21.0f; - bool recive_connect = false; while(!recive_connect){ print_lcd(&wait); - uint8_t buffer_recive[10]; + uint8_t buffer_recive[6]; UART_receive(buffer_recive, sizeof buffer_recive); int err = hdlc_timeout_handler(&hdlc, 1); @@ -64,29 +71,17 @@ void loop() { } } } else { - bool flag_recive = false; - uint8_t data_recive[64]; - size_t len_data_recive; + print_lcd(&recive_data); - recive_data.value1 = 4.0f; - recive_data.value2 = 50.0f; - recive_data.value3 = 600.0f; - strncpy(recive_data.topLine, "Wait for data", sizeof(recive_data.topLine) - 1); + uint8_t buffer_receive[74]; + UART_receive(buffer_receive, sizeof buffer_receive); - while (!flag_recive){ - print_lcd(&recive_data); + if (buffer_receive[0] != 126){ + recive_data.value2 = 51.0f; + uint8_t data_receive[64]; + size_t len_data_receive; - uint8_t buffer_recive_data[72]; - UART_receive(buffer_recive_data, sizeof buffer_recive_data); - - // int err = hdlc_timeout_handler(&hdlc, 1); - // if (err == ERR_FRAME_TIME_OUT){ - // hdlc_get_raw_frame(&hdlc, buffer_data, sizeof buffer_data); - // UART_send(buffer_data, sizeof buffer_data); - // continue; - // } - - int err = hdlc_decode_recived_raw_data(&hdlc, buffer_recive_data, sizeof buffer_recive_data, data_recive, &len_data_recive); + int err = hdlc_decode_recived_raw_data(&hdlc, buffer_receive, sizeof buffer_receive, data_receive, &len_data_receive); if (err < 0){ if (err == ERR_INVALID_SEQ_NUMBER_FRAME){ uint8_t buffer_rej[10]; @@ -94,16 +89,19 @@ void loop() { UART_send(buffer_rej, sizeof buffer_rej); return err; } - return err; - } + //return err; + } - struct message resp; - protocol_decode(data_recive, len_data_recive, &resp); - - recive_data.value1 = resp.numbers[0]; - recive_data.value2 = resp.numbers[1]; - recive_data.value3 = resp.numbers[2]; - strncpy(recive_data.topLine, resp.str, sizeof(recive_data.topLine) - 1); - } + if (hdlc.state == SEND){ + recive_data.value2 = 51.0f; + struct message resp; + protocol_decode(data_receive, len_data_receive, &resp); + recive_data.value1 = resp.numbers[0]; + recive_data.value1 = resp.numbers[0]; + recive_data.value2 = resp.numbers[1]; + recive_data.value3 = resp.numbers[2]; + strcpy(recive_data.topLine, resp.str); + } + } } } \ No newline at end of file diff --git a/uart.cpp b/uart.cpp index 258d644..cd34463 100644 --- a/uart.cpp +++ b/uart.cpp @@ -8,6 +8,12 @@ struct circular_buffer uartRxBuffer; struct circular_buffer uartTxBuffer; +// #define HI(x) ((x)>>8) +// #define LO(x) ((x)& 0xFF) + +// #define BAUDRATE 9600L // скорость передачи по UART +// #define BAUDRATE_REG (F_CPU/(16*BAUDRATE)-1) + void UART_init(void) { UCSR0B = (1 << RXEN0) | (1 << TXEN0) | (1 << RXCIE0) | (1< length) { overflow = 1; } - clear_buffer(&uartRxBuffer); - return overflow ? -1 : byteCount; // Возвращает количество успешно принятых байт или -1 в случае переполнения + //clear_buffer(&uartRxBuffer); + return overflow ? -1 : byteCount; // Возвращает количество успешно принятых байт или -1 в случае переполнения } // прерывание по завершению приема