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https://github.com/espressif/esp-idf.git
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c226270138
Reuses most of the code from BG96. At this moment, this is not a perfect support for other modules as the generic handlers for most common modem functionality is not easily reusable. Refactoring to a fully independent modem component will solve this. Closes https://github.com/espressif/esp-idf/issues/5250
91 lines
3.2 KiB
C
91 lines
3.2 KiB
C
// Copyright 2020 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 "bg96.h"
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#include "bg96_private.h"
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/**
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* @brief This module supports SIM7600 module, which has a very similar interface
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* to the BG96, so it just references most of the handlers from BG96 and implements
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* only those that differ.
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*/
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static const char *DCE_TAG = "sim7600";
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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 sim7600_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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bg96_modem_dce_t *bg96_dce = __containerof(dce, bg96_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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int32_t **cbc = bg96_dce->priv_resource;
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int32_t volts = 0, fraction = 0;
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/* +CBC: <voltage in Volts> V*/
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sscanf(line, "+CBC: %d.%dV", &volts, &fraction);
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/* Since the "read_battery_status()" API (besides voltage) returns also values for BCS, BCL (charge status),
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* which are not applicable to this modem, we return -1 to indicate invalid value
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*/
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*cbc[0] = -1; // BCS
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*cbc[1] = -1; // BCL
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*cbc[2] = volts*1000 + fraction;
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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 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 sim7600_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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bg96_modem_dce_t *bg96_dce = __containerof(dce, bg96_modem_dce_t, parent);
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uint32_t *resource[3] = {bcs, bcl, voltage};
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bg96_dce->priv_resource = resource;
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dce->handle_line = sim7600_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 Create and initialize SIM7600 object
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*
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*/
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modem_dce_t *sim7600_init(modem_dte_t *dte)
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{
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modem_dce_t *dce = bg96_init(dte);
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dte->dce->get_battery_status = sim7600_get_battery_status;
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return dce;
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}
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