can_wizard/main/cmd_can.c

250 lines
8.7 KiB
C
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#include "cmd_can.h"
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#include "can.h"
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#include "esp_err.h"
#include "esp_log.h"
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#include "inttypes.h"
#include "freertos/projdefs.h"
#include "string.h"
#include "esp_console.h"
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#include "argtable3/argtable3.h"
#include "xvprintf.h"
#include <stddef.h>
#include <stdio.h>
#include <ctype.h>
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static void register_send_can_frame(void);
static void register_canup(void);
static void register_candown(void);
static void register_canstats(void);
static void register_canstart(void);
static void register_canrecover(void);
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void register_can_commands(void) {
register_send_can_frame();
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register_canup();
register_candown();
register_canstats();
register_canstart();
register_canrecover();
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}
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static struct {
struct arg_str *message;
struct arg_end *end;
} cansend_args;
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static struct {
struct arg_str *speed;
struct arg_str *filters;
struct arg_str *autorecover;
struct arg_str *mode;
struct arg_end *end;
} canup_args;
static int send_can_frame(int argc, char **argv) {
twai_message_t msg = {.extd = 1};
char printf_str[70];
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int nerrors = arg_parse(argc, argv, (void **) &cansend_args);
if (nerrors != 0) {
arg_print_errors(stderr, cansend_args.end, argv[0]);
return 1;
}
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const char *can_msg_ptr = cansend_args.message->sval[0];
char *can_msg_str_buf = strdup(can_msg_ptr);
char *id_substr = strtok(can_msg_str_buf, "#");
char *data_substr = strtok(NULL, "#");
if ((id_substr == NULL) || (strtok(NULL, "#") != NULL)) goto invalid_args;
int id_l = strlen(id_substr);
int dt_l = data_substr == NULL ? 0 : strlen(data_substr);
if ((id_l > 8) || (dt_l > 16) || (id_l % 2) || (dt_l % 2)) goto invalid_args;
for (int i = 0; i < id_l; i++) if(!isxdigit((int) id_substr[i])) goto invalid_args;
for (int i = 0; i < dt_l; i++) if(!isxdigit((int) data_substr[i])) goto invalid_args;
int msg_id;
if (sscanf(id_substr, "%X", &msg_id) < 1) goto invalid_args;
for (int i = 0; i < (dt_l / 2); i++) {
char *byte_to_parse = malloc(3);
strncpy(byte_to_parse, data_substr + i * 2, 2);
int num;
int res = sscanf(byte_to_parse, "%X", &num);
free(byte_to_parse);
if (res < 1) goto invalid_args;
msg.data[i] = num;
}
msg.data_length_code = dt_l / 2;
msg.identifier = msg_id;
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esp_err_t res = twai_transmit(&msg, pdMS_TO_TICKS(1000));
switch(res) {
case ESP_OK:
can_msg_to_str(&msg, "sent ", printf_str);
print_w_clr_time(printf_str, NULL, true);
break;
case ESP_ERR_TIMEOUT:
print_w_clr_time("Timeout!", LOG_COLOR_RED, false);
break;
case ESP_ERR_NOT_SUPPORTED:
print_w_clr_time("Can't sent in Listen-Only mode!", LOG_COLOR_RED, false);
break;
default:
print_w_clr_time("Invalid state!", LOG_COLOR_RED, false);
break;
}
free(can_msg_str_buf);
return 0;
invalid_args:
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printf("Invalid arguments!\n");
free(can_msg_str_buf);
return 1;
}
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static int canrecover(int argc, char **argv) {
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esp_err_t res = twai_initiate_recovery();
if (res == ESP_OK) print_w_clr_time("Started CAN recovery.", LOG_COLOR_GREEN, false);
else if (curr_can_state.state == CAN_NOT_INSTALLED) print_w_clr_time("CAN driver is not installed!", LOG_COLOR_RED, false);
else print_w_clr_time("Can't start recovery - not in bus-off state!", LOG_COLOR_RED, false);
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return 0;
}
static const char* can_states_str[] = {
"not installed",
"stopped",
"error active",
"error passive",
"bus off",
"recovering"
};
static int canstats(int argc, char **argv) {
if (curr_can_state.state == CAN_NOT_INSTALLED) {
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printf("CAN driver is not installed!\n");
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return 0;
} else {
const char *state_str = can_states_str[curr_can_state.state];
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printf("status: %s\n", state_str);
printf("TX Err Counter: %" PRIu32 "\n", curr_can_state.tx_error_counter);
printf("RX Err Counter: %" PRIu32 "\n", curr_can_state.rx_error_counter);
printf("Failed transmit: %" PRIu32 "\n", curr_can_state.tx_failed_count);
printf("Arbitration lost times: %" PRIu32 "\n", curr_can_state.arb_lost_count);
printf("Bus-off count: %" PRIu32 "\n", curr_can_state.bus_error_count);
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}
return 0;
}
static int canup(int argc, char **argv) {
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esp_err_t res;
esp_log_level_t prev_gpio_lvl = esp_log_level_get("gpio");
esp_log_level_set("gpio", ESP_LOG_ERROR);
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xSemaphoreTake(can_mutex, portMAX_DELAY);
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// Install CAN driver
// TODO: add CAN filtering
static twai_filter_config_t f_config = {.acceptance_code = 0, .acceptance_mask = 0xFFFFFFFF, .single_filter = true};
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res = twai_driver_install(&g_config, &t_config, &f_config);
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if (res != ESP_OK) {
printf("Couldn't install CAN driver! Rebooting...\n");
esp_restart();
}
printf("CAN driver installed\n");
// Start CAN driver
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res = twai_start();
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printf("CAN driver started\n");
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xSemaphoreGive(can_mutex);
esp_log_level_set("gpio", prev_gpio_lvl);
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return 0;
}
static int canstart(int argc, char **argv) {
// Start CAN driver
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xSemaphoreTake(can_mutex, portMAX_DELAY);
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ESP_ERROR_CHECK(twai_start());
printf("CAN driver started\n");
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xSemaphoreGive(can_mutex);
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return 0;
}
static int candown(int argc, char **argv) {
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xSemaphoreTake(can_mutex, portMAX_DELAY);
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if (curr_can_state.state != CAN_BUF_OFF) {
esp_err_t res = twai_stop();
if (res == ESP_OK) print_w_clr_time("CAN was stopped.", LOG_COLOR_GREEN, false);
else {
print_w_clr_time("Driver is not in running state, or is not installed.", LOG_COLOR_RED, false);
xSemaphoreGive(can_mutex);
return 1;
}
}
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ESP_ERROR_CHECK(twai_driver_uninstall());
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xSemaphoreGive(can_mutex);
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return 0;
}
static void register_send_can_frame(void) {
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cansend_args.message = arg_str1(NULL, NULL, "ID#data", "Message to send, ID and data bytes, all in hex. # is the delimiter.");
cansend_args.end = arg_end(2);
const esp_console_cmd_t cmd = {
.command = "cansend",
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.help = "Send a can message to the bus, example: cansend 00008C03#02",
.hint = NULL,
.func = &send_can_frame,
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.argtable = &cansend_args,
};
ESP_ERROR_CHECK( esp_console_cmd_register(&cmd) );
}
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static void register_canup(void) {
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canup_args.speed = arg_str1(NULL, NULL, "<speed>", "CAN bus speed, in bps. See helo for supported speeds.");
canup_args.mode = arg_str0("m", "mode", "<normal|no_ack|listen_only", "Set CAN mode. Normal (default), No Ack (for self-testing) or Listen Only (to prevent transmitting, for monitoring).");
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canup_args.filters = arg_str0("f", "filters", "<filters>", "CAN filters to receive only selected frames.");
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canup_args.autorecover = arg_str0("r", "auto-recovery", "<1|0>", "Set 1 to enable auto-recovery of CAN bus if case of bus-off event, disabled by default.");
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canup_args.end = arg_end(2);
const esp_console_cmd_t cmd = {
.command = "canup",
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.help = "Install can drivers and start can interface. Used right after board start or during runtime for changing CAN configuration. Supported speeds: 1mbits, 800kbits, 500kbits, 250kbits, 125kbits, 100kbits, 50kbits, 25kbits, 20kbits, 16kbits, 12.5kbits, 10kbits, 5kbits, 1kbits.",
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.hint = NULL,
.func = &canup,
.argtable = &canup_args,
};
ESP_ERROR_CHECK(esp_console_cmd_register(&cmd));
}
static void register_candown(void) {
const esp_console_cmd_t cmd = {
.command = "candown",
.help = "Stop CAN interface and uninstall CAN driver, for example, to install and start with different parameters/filters.",
.hint = NULL,
.func = &candown,
};
ESP_ERROR_CHECK(esp_console_cmd_register(&cmd));
}
static void register_canstats(void) {
const esp_console_cmd_t cmd = {
.command = "canstats",
.help = "Print CAN statistics.",
.hint = NULL,
.func = &canstats,
};
ESP_ERROR_CHECK(esp_console_cmd_register(&cmd));
}
static void register_canstart(void) {
const esp_console_cmd_t cmd = {
.command = "canstart",
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.help = "Start CAN interface, used after bus recovery, otherwise see canup command.",
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.hint = NULL,
.func = &canstart,
};
ESP_ERROR_CHECK(esp_console_cmd_register(&cmd));
}
static void register_canrecover(void) {
const esp_console_cmd_t cmd = {
.command = "canrecover",
.help = "Recover CAN after buf-off. Used when auto-recovery is turned off.",
.hint = NULL,
.func = &canrecover,
};
ESP_ERROR_CHECK(esp_console_cmd_register(&cmd));
}