1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
#include <stdio.h>
#include "../shared/protocol.h"
#include "backlog.h"
#include "util.h"
void ws_protocol_res_last_records(ws_s_protocol_parsed_req_cmd* parsed_cmd, ws_s_protocol_res* response, bool send) {
static unsigned int record_amount = 0;
const char* response_header = "id,temperature,humidity,atmospheric_pressure\n";
const size_t response_line_size = sizeof("xxxx,xx,xx,xx\n");
if (!send) {
response->success = WS_PROTOCOL_CMD_RETURN_OK;
if (sscanf(parsed_cmd->argv[1], "%u", &record_amount) < 1) response->success = WS_PROTOCOL_CMD_RETURN_ERROR;
record_amount = WS_MIN(record_amount, ws_backlog_get_record_count());
response->csh = true;
response->msg = ws_bin_s_alloc(0);
response->msg->bytes = strlen(response_header) + response_line_size * record_amount;
} else {
ws_protocol_send_data(response_header, strlen(response_header));
char line[response_line_size + 1]; // +1 for null terminator -> sprintf
for (unsigned int i = 0; i < record_amount; i++) {
ws_s_backlog_record* record = ws_backlog_get_last_record(i);
sprintf(line, "%04x,%02x,%02x,%02x\n", record->id, record->sens_temperature, record->sens_humidity, record->sens_atm_pressure);
ws_protocol_send_data(line, response_line_size);
}
}
}
void ws_protocol_send_data(const char* data, unsigned int length) {
//TODO: implement on esp data channels
HAL_UART_Transmit(&huart2, (uint8_t*) data, length, HAL_MAX_DELAY);
}
|