477 lines
16 KiB
C
477 lines
16 KiB
C
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// Copyright 2015-2018 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <stdlib.h>
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#include <string.h>
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#include "esp_log.h"
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#include "esp_modem_dce_service.h"
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#include "sim800.h"
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#define MODEM_RESULT_CODE_POWERDOWN "POWER DOWN"
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/**
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* @brief Macro defined for error checking
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*
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*/
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static const char *DCE_TAG = "sim800";
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#define DCE_CHECK(a, str, goto_tag, ...) \
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do \
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{ \
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if (!(a)) \
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{ \
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ESP_LOGE(DCE_TAG, "%s(%d): " str, __FUNCTION__, __LINE__, ##__VA_ARGS__); \
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goto goto_tag; \
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} \
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} while (0)
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/**
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* @brief SIM800 Modem
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*
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*/
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typedef struct {
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void *priv_resource; /*!< Private resource */
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modem_dce_t parent; /*!< DCE parent class */
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} sim800_modem_dce_t;
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/**
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* @brief Handle response from AT+CSQ
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*/
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static esp_err_t sim800_handle_csq(modem_dce_t *dce, const char *line)
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{
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esp_err_t err = ESP_FAIL;
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sim800_modem_dce_t *sim800_dce = __containerof(dce, sim800_modem_dce_t, parent);
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if (strstr(line, MODEM_RESULT_CODE_SUCCESS)) {
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err = esp_modem_process_command_done(dce, MODEM_STATE_SUCCESS);
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} else if (strstr(line, MODEM_RESULT_CODE_ERROR)) {
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err = esp_modem_process_command_done(dce, MODEM_STATE_FAIL);
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} else if (!strncmp(line, "+CSQ", strlen("+CSQ"))) {
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/* store value of rssi and ber */
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uint32_t **csq = sim800_dce->priv_resource;
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/* +CSQ: <rssi>,<ber> */
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sscanf(line, "%*s%d,%d", csq[0], csq[1]);
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err = ESP_OK;
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}
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return err;
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}
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/**
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* @brief Handle response from AT+CBC
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*/
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static esp_err_t sim800_handle_cbc(modem_dce_t *dce, const char *line)
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{
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esp_err_t err = ESP_FAIL;
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sim800_modem_dce_t *sim800_dce = __containerof(dce, sim800_modem_dce_t, parent);
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if (strstr(line, MODEM_RESULT_CODE_SUCCESS)) {
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err = esp_modem_process_command_done(dce, MODEM_STATE_SUCCESS);
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} else if (strstr(line, MODEM_RESULT_CODE_ERROR)) {
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err = esp_modem_process_command_done(dce, MODEM_STATE_FAIL);
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} else if (!strncmp(line, "+CBC", strlen("+CBC"))) {
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/* store value of bcs, bcl, voltage */
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uint32_t **cbc = sim800_dce->priv_resource;
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/* +CBC: <bcs>,<bcl>,<voltage> */
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sscanf(line, "%*s%d,%d,%d", cbc[0], cbc[1], cbc[2]);
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err = ESP_OK;
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}
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return err;
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}
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/**
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* @brief Handle response from +++
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*/
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static esp_err_t sim800_handle_exit_data_mode(modem_dce_t *dce, const char *line)
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{
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esp_err_t err = ESP_FAIL;
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if (strstr(line, MODEM_RESULT_CODE_SUCCESS)) {
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err = esp_modem_process_command_done(dce, MODEM_STATE_SUCCESS);
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} else if (strstr(line, MODEM_RESULT_CODE_NO_CARRIER)) {
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err = esp_modem_process_command_done(dce, MODEM_STATE_SUCCESS);
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} else if (strstr(line, MODEM_RESULT_CODE_ERROR)) {
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err = esp_modem_process_command_done(dce, MODEM_STATE_FAIL);
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}
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return err;
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}
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/**
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* @brief Handle response from ATD*99#
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*/
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static esp_err_t sim800_handle_atd_ppp(modem_dce_t *dce, const char *line)
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{
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esp_err_t err = ESP_FAIL;
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if (strstr(line, MODEM_RESULT_CODE_CONNECT)) {
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err = esp_modem_process_command_done(dce, MODEM_STATE_SUCCESS);
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} else if (strstr(line, MODEM_RESULT_CODE_ERROR)) {
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err = esp_modem_process_command_done(dce, MODEM_STATE_FAIL);
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}
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return err;
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}
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/**
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* @brief Handle response from AT+CGMM
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*/
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static esp_err_t sim800_handle_cgmm(modem_dce_t *dce, const char *line)
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{
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esp_err_t err = ESP_FAIL;
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if (strstr(line, MODEM_RESULT_CODE_SUCCESS)) {
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err = esp_modem_process_command_done(dce, MODEM_STATE_SUCCESS);
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} else if (strstr(line, MODEM_RESULT_CODE_ERROR)) {
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err = esp_modem_process_command_done(dce, MODEM_STATE_FAIL);
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} else {
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int len = snprintf(dce->name, MODEM_MAX_NAME_LENGTH, "%s", line);
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if (len > 2) {
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/* Strip "\r\n" */
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strip_cr_lf_tail(dce->name, len);
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err = ESP_OK;
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}
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}
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return err;
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}
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/**
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* @brief Handle response from AT+CGSN
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*/
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static esp_err_t sim800_handle_cgsn(modem_dce_t *dce, const char *line)
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{
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esp_err_t err = ESP_FAIL;
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if (strstr(line, MODEM_RESULT_CODE_SUCCESS)) {
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err = esp_modem_process_command_done(dce, MODEM_STATE_SUCCESS);
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} else if (strstr(line, MODEM_RESULT_CODE_ERROR)) {
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err = esp_modem_process_command_done(dce, MODEM_STATE_FAIL);
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} else {
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int len = snprintf(dce->imei, MODEM_IMEI_LENGTH + 1, "%s", line);
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if (len > 2) {
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/* Strip "\r\n" */
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strip_cr_lf_tail(dce->imei, len);
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err = ESP_OK;
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}
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}
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return err;
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}
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/**
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* @brief Handle response from AT+CIMI
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*/
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static esp_err_t sim800_handle_cimi(modem_dce_t *dce, const char *line)
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{
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esp_err_t err = ESP_FAIL;
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if (strstr(line, MODEM_RESULT_CODE_SUCCESS)) {
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err = esp_modem_process_command_done(dce, MODEM_STATE_SUCCESS);
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} else if (strstr(line, MODEM_RESULT_CODE_ERROR)) {
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err = esp_modem_process_command_done(dce, MODEM_STATE_FAIL);
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} else {
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int len = snprintf(dce->imsi, MODEM_IMSI_LENGTH + 1, "%s", line);
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if (len > 2) {
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/* Strip "\r\n" */
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strip_cr_lf_tail(dce->imsi, len);
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err = ESP_OK;
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}
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}
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return err;
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}
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/**
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* @brief Handle response from AT+COPS?
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*/
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static esp_err_t sim800_handle_cops(modem_dce_t *dce, const char *line)
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{
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esp_err_t err = ESP_FAIL;
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if (strstr(line, MODEM_RESULT_CODE_SUCCESS)) {
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err = esp_modem_process_command_done(dce, MODEM_STATE_SUCCESS);
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} else if (strstr(line, MODEM_RESULT_CODE_ERROR)) {
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err = esp_modem_process_command_done(dce, MODEM_STATE_FAIL);
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} else if (!strncmp(line, "+COPS", strlen("+COPS"))) {
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/* there might be some random spaces in operator's name, we can not use sscanf to parse the result */
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/* strtok will break the string, we need to create a copy */
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size_t len = strlen(line);
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char *line_copy = malloc(len + 1);
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strcpy(line_copy, line);
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/* +COPS: <mode>[, <format>[, <oper>]] */
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char *str_ptr = NULL;
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char *p[3];
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uint8_t i = 0;
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/* strtok will broke string by replacing delimiter with '\0' */
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p[i] = strtok_r(line_copy, ",", &str_ptr);
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while (p[i]) {
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p[++i] = strtok_r(NULL, ",", &str_ptr);
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}
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if (i >= 3) {
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int len = snprintf(dce->oper, MODEM_MAX_OPERATOR_LENGTH, "%s", p[2]);
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if (len > 2) {
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/* Strip "\r\n" */
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strip_cr_lf_tail(dce->oper, len);
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err = ESP_OK;
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}
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}
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free(line_copy);
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}
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return err;
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}
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/**
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* @brief Handle response from AT+CPOWD=1
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*/
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static esp_err_t sim800_handle_power_down(modem_dce_t *dce, const char *line)
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{
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esp_err_t err = ESP_FAIL;
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if (strstr(line, MODEM_RESULT_CODE_POWERDOWN)) {
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err = esp_modem_process_command_done(dce, MODEM_STATE_SUCCESS);
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}
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return err;
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}
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/**
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* @brief Get signal quality
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*
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* @param dce Modem DCE object
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* @param rssi received signal strength indication
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* @param ber bit error ratio
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* @return esp_err_t
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* - ESP_OK on success
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* - ESP_FAIL on error
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*/
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static esp_err_t sim800_get_signal_quality(modem_dce_t *dce, uint32_t *rssi, uint32_t *ber)
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{
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modem_dte_t *dte = dce->dte;
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sim800_modem_dce_t *sim800_dce = __containerof(dce, sim800_modem_dce_t, parent);
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uint32_t *resource[2] = {rssi, ber};
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sim800_dce->priv_resource = resource;
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dce->handle_line = sim800_handle_csq;
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DCE_CHECK(dte->send_cmd(dte, "AT+CSQ\r", MODEM_COMMAND_TIMEOUT_DEFAULT) == ESP_OK, "send command failed", err);
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DCE_CHECK(dce->state == MODEM_STATE_SUCCESS, "inquire signal quality failed", err);
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ESP_LOGD(DCE_TAG, "inquire signal quality ok");
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return ESP_OK;
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err:
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return ESP_FAIL;
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}
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/**
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* @brief Get battery status
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*
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* @param dce Modem DCE object
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* @param bcs Battery charge status
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* @param bcl Battery connection level
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* @param voltage Battery voltage
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* @return esp_err_t
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* - ESP_OK on success
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* - ESP_FAIL on error
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*/
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static esp_err_t sim800_get_battery_status(modem_dce_t *dce, uint32_t *bcs, uint32_t *bcl, uint32_t *voltage)
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{
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modem_dte_t *dte = dce->dte;
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sim800_modem_dce_t *sim800_dce = __containerof(dce, sim800_modem_dce_t, parent);
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uint32_t *resource[3] = {bcs, bcl, voltage};
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sim800_dce->priv_resource = resource;
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dce->handle_line = sim800_handle_cbc;
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DCE_CHECK(dte->send_cmd(dte, "AT+CBC\r", MODEM_COMMAND_TIMEOUT_DEFAULT) == ESP_OK, "send command failed", err);
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DCE_CHECK(dce->state == MODEM_STATE_SUCCESS, "inquire battery status failed", err);
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ESP_LOGD(DCE_TAG, "inquire battery status ok");
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return ESP_OK;
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err:
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return ESP_FAIL;
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}
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/**
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* @brief Set Working Mode
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*
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* @param dce Modem DCE object
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* @param mode woking mode
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* @return esp_err_t
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* - ESP_OK on success
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* - ESP_FAIL on error
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*/
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static esp_err_t sim800_set_working_mode(modem_dce_t *dce, modem_mode_t mode)
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{
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modem_dte_t *dte = dce->dte;
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switch (mode) {
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case MODEM_COMMAND_MODE:
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dce->handle_line = sim800_handle_exit_data_mode;
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DCE_CHECK(dte->send_cmd(dte, "+++", MODEM_COMMAND_TIMEOUT_MODE_CHANGE) == ESP_OK, "send command failed", err);
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DCE_CHECK(dce->state == MODEM_STATE_SUCCESS, "enter command mode failed", err);
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ESP_LOGD(DCE_TAG, "enter command mode ok");
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dce->mode = MODEM_COMMAND_MODE;
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break;
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case MODEM_PPP_MODE:
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dce->handle_line = sim800_handle_atd_ppp;
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DCE_CHECK(dte->send_cmd(dte, "ATD*99#\r", MODEM_COMMAND_TIMEOUT_MODE_CHANGE) == ESP_OK, "send command failed", err);
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DCE_CHECK(dce->state == MODEM_STATE_SUCCESS, "enter ppp mode failed", err);
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ESP_LOGD(DCE_TAG, "enter ppp mode ok");
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dce->mode = MODEM_PPP_MODE;
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break;
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default:
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ESP_LOGW(DCE_TAG, "unsupported working mode: %d", mode);
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goto err;
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break;
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}
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return ESP_OK;
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err:
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return ESP_FAIL;
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}
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/**
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* @brief Power down
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*
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* @param sim800_dce sim800 object
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* @return esp_err_t
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* - ESP_OK on success
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* - ESP_FAIL on error
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*/
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static esp_err_t sim800_power_down(modem_dce_t *dce)
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{
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modem_dte_t *dte = dce->dte;
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dce->handle_line = sim800_handle_power_down;
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DCE_CHECK(dte->send_cmd(dte, "AT+CPOWD=1\r", MODEM_COMMAND_TIMEOUT_POWEROFF) == ESP_OK, "send command failed", err);
|
||
|
|
DCE_CHECK(dce->state == MODEM_STATE_SUCCESS, "power down failed", err);
|
||
|
|
ESP_LOGD(DCE_TAG, "power down ok");
|
||
|
|
return ESP_OK;
|
||
|
|
err:
|
||
|
|
return ESP_FAIL;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Get DCE module name
|
||
|
|
*
|
||
|
|
* @param sim800_dce sim800 object
|
||
|
|
* @return esp_err_t
|
||
|
|
* - ESP_OK on success
|
||
|
|
* - ESP_FAIL on error
|
||
|
|
*/
|
||
|
|
static esp_err_t sim800_get_module_name(sim800_modem_dce_t *sim800_dce)
|
||
|
|
{
|
||
|
|
modem_dte_t *dte = sim800_dce->parent.dte;
|
||
|
|
sim800_dce->parent.handle_line = sim800_handle_cgmm;
|
||
|
|
DCE_CHECK(dte->send_cmd(dte, "AT+CGMM\r", MODEM_COMMAND_TIMEOUT_DEFAULT) == ESP_OK, "send command failed", err);
|
||
|
|
DCE_CHECK(sim800_dce->parent.state == MODEM_STATE_SUCCESS, "get module name failed", err);
|
||
|
|
ESP_LOGD(DCE_TAG, "get module name ok");
|
||
|
|
return ESP_OK;
|
||
|
|
err:
|
||
|
|
return ESP_FAIL;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Get DCE module IMEI number
|
||
|
|
*
|
||
|
|
* @param sim800_dce sim800 object
|
||
|
|
* @return esp_err_t
|
||
|
|
* - ESP_OK on success
|
||
|
|
* - ESP_FAIL on error
|
||
|
|
*/
|
||
|
|
static esp_err_t sim800_get_imei_number(sim800_modem_dce_t *sim800_dce)
|
||
|
|
{
|
||
|
|
modem_dte_t *dte = sim800_dce->parent.dte;
|
||
|
|
sim800_dce->parent.handle_line = sim800_handle_cgsn;
|
||
|
|
DCE_CHECK(dte->send_cmd(dte, "AT+CGSN\r", MODEM_COMMAND_TIMEOUT_DEFAULT) == ESP_OK, "send command failed", err);
|
||
|
|
DCE_CHECK(sim800_dce->parent.state == MODEM_STATE_SUCCESS, "get imei number failed", err);
|
||
|
|
ESP_LOGD(DCE_TAG, "get imei number ok");
|
||
|
|
return ESP_OK;
|
||
|
|
err:
|
||
|
|
return ESP_FAIL;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Get DCE module IMSI number
|
||
|
|
*
|
||
|
|
* @param sim800_dce sim800 object
|
||
|
|
* @return esp_err_t
|
||
|
|
* - ESP_OK on success
|
||
|
|
* - ESP_FAIL on error
|
||
|
|
*/
|
||
|
|
static esp_err_t sim800_get_imsi_number(sim800_modem_dce_t *sim800_dce)
|
||
|
|
{
|
||
|
|
modem_dte_t *dte = sim800_dce->parent.dte;
|
||
|
|
sim800_dce->parent.handle_line = sim800_handle_cimi;
|
||
|
|
DCE_CHECK(dte->send_cmd(dte, "AT+CIMI\r", MODEM_COMMAND_TIMEOUT_DEFAULT) == ESP_OK, "send command failed", err);
|
||
|
|
DCE_CHECK(sim800_dce->parent.state == MODEM_STATE_SUCCESS, "get imsi number failed", err);
|
||
|
|
ESP_LOGD(DCE_TAG, "get imsi number ok");
|
||
|
|
return ESP_OK;
|
||
|
|
err:
|
||
|
|
return ESP_FAIL;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Get Operator's name
|
||
|
|
*
|
||
|
|
* @param sim800_dce sim800 object
|
||
|
|
* @return esp_err_t
|
||
|
|
* - ESP_OK on success
|
||
|
|
* - ESP_FAIL on error
|
||
|
|
*/
|
||
|
|
static esp_err_t sim800_get_operator_name(sim800_modem_dce_t *sim800_dce)
|
||
|
|
{
|
||
|
|
modem_dte_t *dte = sim800_dce->parent.dte;
|
||
|
|
sim800_dce->parent.handle_line = sim800_handle_cops;
|
||
|
|
DCE_CHECK(dte->send_cmd(dte, "AT+COPS?\r", MODEM_COMMAND_TIMEOUT_OPERATOR) == ESP_OK, "send command failed", err);
|
||
|
|
DCE_CHECK(sim800_dce->parent.state == MODEM_STATE_SUCCESS, "get network operator failed", err);
|
||
|
|
ESP_LOGD(DCE_TAG, "get network operator ok");
|
||
|
|
return ESP_OK;
|
||
|
|
err:
|
||
|
|
return ESP_FAIL;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Deinitialize SIM800 object
|
||
|
|
*
|
||
|
|
* @param dce Modem DCE object
|
||
|
|
* @return esp_err_t
|
||
|
|
* - ESP_OK on success
|
||
|
|
* - ESP_FAIL on fail
|
||
|
|
*/
|
||
|
|
static esp_err_t sim800_deinit(modem_dce_t *dce)
|
||
|
|
{
|
||
|
|
sim800_modem_dce_t *sim800_dce = __containerof(dce, sim800_modem_dce_t, parent);
|
||
|
|
if (dce->dte) {
|
||
|
|
dce->dte->dce = NULL;
|
||
|
|
}
|
||
|
|
free(sim800_dce);
|
||
|
|
return ESP_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
modem_dce_t *sim800_init(modem_dte_t *dte)
|
||
|
|
{
|
||
|
|
DCE_CHECK(dte, "DCE should bind with a DTE", err);
|
||
|
|
/* malloc memory for sim800_dce object */
|
||
|
|
sim800_modem_dce_t *sim800_dce = calloc(1, sizeof(sim800_modem_dce_t));
|
||
|
|
DCE_CHECK(sim800_dce, "calloc sim800_dce failed", err);
|
||
|
|
/* Bind DTE with DCE */
|
||
|
|
sim800_dce->parent.dte = dte;
|
||
|
|
dte->dce = &(sim800_dce->parent);
|
||
|
|
/* Bind methods */
|
||
|
|
sim800_dce->parent.handle_line = NULL;
|
||
|
|
sim800_dce->parent.sync = esp_modem_dce_sync;
|
||
|
|
sim800_dce->parent.echo_mode = esp_modem_dce_echo;
|
||
|
|
sim800_dce->parent.store_profile = esp_modem_dce_store_profile;
|
||
|
|
sim800_dce->parent.set_flow_ctrl = esp_modem_dce_set_flow_ctrl;
|
||
|
|
sim800_dce->parent.define_pdp_context = esp_modem_dce_define_pdp_context;
|
||
|
|
sim800_dce->parent.hang_up = esp_modem_dce_hang_up;
|
||
|
|
sim800_dce->parent.get_signal_quality = sim800_get_signal_quality;
|
||
|
|
sim800_dce->parent.get_battery_status = sim800_get_battery_status;
|
||
|
|
sim800_dce->parent.set_working_mode = sim800_set_working_mode;
|
||
|
|
sim800_dce->parent.power_down = sim800_power_down;
|
||
|
|
sim800_dce->parent.deinit = sim800_deinit;
|
||
|
|
/* Sync between DTE and DCE */
|
||
|
|
DCE_CHECK(esp_modem_dce_sync(&(sim800_dce->parent)) == ESP_OK, "sync failed", err_io);
|
||
|
|
/* Close echo */
|
||
|
|
DCE_CHECK(esp_modem_dce_echo(&(sim800_dce->parent), false) == ESP_OK, "close echo mode failed", err_io);
|
||
|
|
/* Get Module name */
|
||
|
|
DCE_CHECK(sim800_get_module_name(sim800_dce) == ESP_OK, "get module name failed", err_io);
|
||
|
|
/* Get IMEI number */
|
||
|
|
DCE_CHECK(sim800_get_imei_number(sim800_dce) == ESP_OK, "get imei failed", err_io);
|
||
|
|
/* Get IMSI number */
|
||
|
|
DCE_CHECK(sim800_get_imsi_number(sim800_dce) == ESP_OK, "get imsi failed", err_io);
|
||
|
|
/* Get operator name */
|
||
|
|
DCE_CHECK(sim800_get_operator_name(sim800_dce) == ESP_OK, "get operator name failed", err_io);
|
||
|
|
return &(sim800_dce->parent);
|
||
|
|
err_io:
|
||
|
|
free(sim800_dce);
|
||
|
|
err:
|
||
|
|
return NULL;
|
||
|
|
}
|