uploaded 3 months ago
esp-iot-solution modem AT command parser
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# Modem AT Command Parser
## Overview
This is an AT command parser component for communicating with 4G modules, developed based on the ESP-IDF framework. The component sends AT commands through your own interface and parses module responses, supporting timeout control, suitable for 4G Modem communication scenarios in IoT devices.
### Key Features
- Standard AT command sending and response parsing
- Built-in timeout control
- Extensible response handling callbacks
## Usage
```c
at_handle_t handle = NULL;
static esp_err_t your_send_function(const char *cmd, size_t length, void *usr_data)
{
//send command with your own interface
}
// your data received callback
static void data_recv_data_cb(void)
{
char *buffer;
size_t buffer_remain;
modem_at_get_response_buffer(handle, &buffer, &buffer_remain);
if (buffer_remain < length) {
length = buffer_remain;
ESP_LOGE(TAG, "data size is too big, truncated to %d", length);
}
data_read_bytes((uint8_t *)buffer, &length); // read data from your interface
// Parse the AT command response
modem_at_write_response_done(handle, length);
}
void at_init()
{
modem_at_config_t cfg = {
.send_buffer_length = 256,
.recv_buffer_length = 256,
.io = {
.send_cmd = your_send_function,
.usr_data = your_context
}
};
handle = modem_at_parser_create(&cfg);
modem_at_start(handle);
at_cmd_at(handle); // test AT command
// free the AT command parser
modem_at_parser_destroy(at_handle);
}
```
Supports all targets
License: Apache-2.0
To add this component to your project, run:
download archive
idf.py add-dependency "tda-2030/modem_at^0.1.0~1"
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